WO2009084084A1

WO2009084084A1 - Recording medium reproducing device, recording medium reproducing method, recording medium reproducing program, and recording medium with recording medium reproducing program stored

Info

Publication number: WO2009084084A1
Application number: PCT/JP2007/075138
Authority: WO
Inventors: Tetsuya Fujie
Original assignee: Pioneer Corporation
Priority date: 2007-12-27
Filing date: 2007-12-27
Publication date: 2009-07-09
Also published as: JPWO2009084084A1; JP4958979B2

Abstract

A DVD player (1) performs Voronoi partition by using the coordinate of the start of a rectangular region and the coordinate of the end thereof in button position information recorded on a DVD (14) and sets the reaction region of a new touch panel on the basis of the partition line acquired by the Voronoi-partition. Alternatively, the DVD player (1) defines the region in which information with the rectangular region size which is easily depressed and the number of title character strings are expanded (the information with the rectangular region size which is easily depressed X the number of title character strings) as the reaction region of the touch panel by using the number of title character strings recorded on the DVD (14) and the information with the rectangular region size which is easily depressed with a finger or the like. Further alternatively, the DVD player (1) scans the character string of a menu image to be displayed, performs the character recognition, acquires the coordinate position of the characters, and defines the characters of the coordinate position closest to the button position information (highlight information) as the reaction region of the touch panel.

Description

Recording medium reproducing apparatus, recording medium reproducing method, recording medium reproducing program, and recording medium storing recording medium reproducing program

The present invention relates to a recording medium reproducing apparatus, a recording medium reproducing method, a recording medium reproducing program, and a recording medium storing the recording medium reproducing program, which can reproduce information recorded on the recording medium by operating a touch panel.

In recent years, in various electronic devices, touch panels that can be operated by touching with a user's finger or the like have become widespread.

The touch panel is overlaid on the display surface on which the menu screen is displayed, and a reaction area is set in advance according to the menu screen. By touching the reaction area, operation according to the touched menu is performed. (For example, refer to Patent Document 1).

Also, a DVD (Digital Versatile Disk) as a recording medium has recorded therein control information for associating the contents of the menu screen displayed when played back and the menu screen with video and audio contents. Includes highlight information for indicating which item is selected on the menu screen (see, for example, Patent Document 2).

The highlight information includes information on the highlight area and the color of the highlighted button.

Conventionally, in a DVD reproducing apparatus using a touch panel for in-vehicle use or the like, this highlight area is set as a reaction area in which an operation becomes effective when a menu screen is displayed.
JP 2007-193589 A JP 2006-13940 A

However, the following problems occur in the highlight area information recorded on the DVD. FIG. 1 shows a case where the menu item and the highlight area 100 substantially match, and FIG. 2 shows a case where the highlight area 100 does not match the menu item and the area is small.

If the highlight area is set as shown in FIG. 1, there is no problem in operation. However, if the highlight area is set as shown in FIG. Operational troubles such as mistakes will occur. In addition, the highlight area is not information that is conscious of the area of the touch panel, but only information that indicates an area that is highlighted when the cursor is moved by a remote controller or the like. There is also a problem that it is confused because the operability is not consistent from the user's point of view.

Accordingly, the present invention provides a recording medium reproducing apparatus, a recording medium reproducing method, and a recording medium reproducing program capable of setting a reaction area that can reduce an operation error when a menu operation of a recording medium such as a DVD is performed using a touch panel. Another object of the present invention is to provide a recording medium storing a recording medium reproduction program.

In order to solve the above-described problem, a recording medium playback apparatus according to claim 1 includes: a reading unit that reads content information and content control information recorded on a recording medium; and the content control information that is read by the reading unit. Display means for displaying menu information for reproducing content information, a touch panel for operating the menu information superimposed on the display means, and the menu information based on the position information where the touch panel is operated. And a playback control means for playing back the content information, a display area (hereinafter, referred to as indicating which of the items on the menu screen included in the content control information is selected). Based on the information on the selection display area). Is characterized in that the reaction area of the touch panel for each equipped with a reaction area setting means for setting wider than the selected display area.

The recording medium reproduction method according to claim 11 reads content information and content control information recorded on a recording medium, displays menu information for reproducing the content information from the read content control information, and a touch panel In a recording medium reproduction method for reproducing the content information according to the menu information based on the operated position information, an indication indicating which item on the menu screen included in the content control information is selected The reaction area of the touch panel for each item of the menu information is set wider than the display area indicating which item on the menu screen is selected based on the information regarding the area of the menu information.

13. A recording medium reproduction program according to claim 12, wherein a reading means for reading content information and content control information recorded on a recording medium, and a menu for reproducing the content information from the content control information read by the reading means. A menu of the information reproducing apparatus comprising display means for displaying information, and a touch panel for operating the menu information superimposed on the display means, based on the position information on which the touch panel is operated. In an information reproduction program that functions as a reproduction control unit that reproduces the content information according to the information, based on information about a display area that indicates which item on the menu screen included in the content control information is selected The menu information item And the reaction region of the touch panel characterized by causing the computer to function as a reaction region setting means for setting wider than the display area indicating which selects any of the items on the menu screen.

It is explanatory drawing of the reaction area | region of the touchscreen in a prior art. It is explanatory drawing of the reaction area | region of the touchscreen in a prior art. 1 is a block diagram of a DVD player according to a first embodiment of the present invention. It is explanatory drawing of the data structure of DVD. FIG. 2 is an explanatory diagram showing an example of Voronoi division of a display screen in the DVD player shown in FIG. 1. It is explanatory drawing which shows the reaction area | region of the touchscreen in the DVD player shown by FIG. It is explanatory drawing which shows the reaction area | region of the touchscreen in the DVD player shown by FIG. It is explanatory drawing of the setting method of the reaction area | region of the touch panel shown in FIG. FIG. 2 is an explanatory diagram showing an example of a gravity center Voronoi division of a display screen in the DVD player shown in FIG. 1. It is a block diagram of the DVD player concerning the 2nd example of the present invention. 11 is a flowchart showing a method for setting a reaction area of a touch panel in the DVD player shown in FIG. It is explanatory drawing of the structure of VMGI. It is explanatory drawing of a domain It is explanatory drawing of the area | region which feels easy to push. It is explanatory drawing of the transition when there exists a case where it changes directly from a menu screen, and dummy PGC. It is a part of the flowchart which showed the acquisition process of a title number. It is the other part of the flowchart which showed the acquisition process of a title number. It is explanatory drawing of expansion of the reaction area | region by the 2nd Example. It is a block diagram of the DVD player concerning the 3rd example of the present invention. FIG. 20 is a flowchart showing a method for setting a reaction area of a touch panel in the DVD player shown in FIG. 19. FIG. It is the flowchart which showed the character string scanning process. It is explanatory drawing of a comparison and allocation process of character image coordinate data and button position information. It is the flowchart which showed the comparison and allocation process of character image coordinate data and button position information. It is the flowchart which showed the other method of the comparison and allocation process of character image coordinate data and button position information. It is explanatory drawing of the other method of a comparison and assignment process of character image coordinate data and button position information. It is explanatory drawing of the other method of a comparison and assignment process of character image coordinate data and button position information.

Explanation of symbols

1 DVD player (recording medium playback device)
2 Display touch panel (touch panel)
5 Playback section (reading means, playback control means)
11 Expansion part (reaction area setting means)
11d Button size change unit (contact area storage means)
11g Scanning part (character recognition means)

Hereinafter, a recording medium playback apparatus according to an embodiment of the present invention will be described. In the recording medium playback apparatus according to an embodiment of the present invention, the reaction area setting unit sets the reaction area of the touch panel for each item of the menu information based on the content control information recorded on the recording medium. Since the display area (selection display area) indicating which one of them is selected is set wider, the reaction area is wider than before, and operation errors can be reduced.

Further, the reaction area setting means may set a reaction area by performing Voronoi division based on information on a plurality of selection display areas. By doing so, it is possible to optimize the reaction area of a plurality of items by Voronoi division, and it is possible to expand the reaction area within the divided area. Can be reduced.

Further, the reaction area setting means may set the reaction area by performing Voronoi division using at least one or more of the vertices of the selection display area as a mother point. By doing in this way, the precision at the time of performing a Voronoi division | segmentation rises and the optimization of a reaction area | region can be achieved more.

Further, the reaction area setting means may set the reaction area by performing Voronoi division using the center of gravity of the selected display area as a generating point. By doing so, the reaction region can be optimized and the amount of calculation required for Voronoi division can be reduced.

Further, the reaction area setting means may set an area surrounded by a dividing line obtained by performing Voronoi division closest to the selection display area as a reaction area. By doing in this way, it is possible to further narrow down to areas that are likely to be operated by users etc. with respect to areas that have been optimized by performing Voronoi division, and that the reaction areas overlap with multiple items. Can be prevented.

Further, the reaction area setting means may enlarge the dividing line obtained by Voronoi division while maintaining the shape of the selection display area and the outer edge of the area intersect, and set the enlarged area as the reaction area. By doing so, the area on the menu screen is enlarged while maintaining the shape of the area for distinguishing a plurality of items, so that the user etc. operates on the area that has been optimized by performing Voronoi division It is possible to further narrow down to a highly probable area. Further, for example, if the shape of the area for distinguishing a plurality of items on the menu screen is rectangular, it is only necessary to hold the coordinates of the start point and end point, so that the setting process of the reaction area can be simplified.

Further, the reaction area setting means may set the reaction area based on the information about the selection display area and the title text information included in the content control information. By doing in this way, since it is based on the title text information relevant to the menu item, an area substantially corresponding to the menu item on the screen can be set as the reaction area.

In addition, a contact area storage unit that stores in advance the size of the touched area when touching the touch panel is provided, and the reaction area setting unit touches the touch panel stored in the contact area storage unit. The reaction area may be set based on the size of the area and the number of characters of the title text information included in the content control information. By doing in this way, since the area | region which respond | corresponds to the menu item on a screen can be made into a reaction area | region, it can be expanded even to the area | region considered that a user etc. operate.

In addition, a character recognition unit that performs character recognition on the menu screen is provided, and the reaction region setting unit determines the reaction region based on the position indicating the character on the menu screen recognized by the character recognition unit and information on the selection display region. It may be set. By doing this, the characters that make up the menu on the screen are recognized and the character area is set as the reaction area. Therefore, the reaction area is optimized and widened to the area that the user can operate. be able to.

Further, the reaction area setting means may set the position indicating the character on the menu screen recognized by the character recognition means closest to the position of the selection display area as the reaction area. In this way, the character recognition area corresponding to the menu item can be set as the reaction area.

In the recording medium playback method according to the embodiment of the present invention, the reaction area of the touch panel for each item of the menu information is set wider than the selection display area based on the content control information recorded on the recording medium. As a result, the reaction area is wider than before, and operation errors can be reduced.

The recording medium playback program according to an embodiment of the present invention sets the reaction area of the touch panel for each item of the menu information wider than the selection display area based on the content control information recorded on the computer. Since it is operated as the reaction area setting means, the reaction area is widened compared to the prior art, and operation errors can be reduced.

Further, the recording medium playback program according to claim 12 may be stored in a storage medium. In this way, the recording medium playback program can be distributed alone, in addition to being incorporated into the device, and version upgrades can be easily performed.

A recording medium reproducing apparatus according to the first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 3, a DVD player 1 as a recording medium device according to the first embodiment includes a display touch panel 2, a display touch panel control unit 3, a user operation control unit 4, a playback unit 5, and a front end unit. 6, an optical pickup 7, a back-end unit 8, a DAC 9, an output terminal 10, an expansion unit 11, a remote controller control unit 12, and a remote controller 13.

The display touch panel 2 as a touch panel is a transparent panel-like member superimposed on an LCD (Liquid Crystal Display) as a display means. The display touch panel 2 converts position information touched with a finger or a pen-like input device into a voltage value or the like and outputs the voltage value to the display touch panel control unit 3. Note that the touch panel used for the display touch panel 2 may use any method such as a resistive film method, a capacitance method, and an ultrasonic method. Although not shown in FIG. 1, the LCD displays video (menu images of various contents, content details themselves, etc.) output from the output terminal 10 via a back-end unit 8 and a DAC 9 described later.

The display touch panel control unit 3 includes position information touched by a finger or a pen-like input device input from the display touch panel 2 and an expanded button position stored in an expanded button position information storage unit 11c of the expanded unit 11 described later. It is determined whether or not the button has been pressed (menu item selection operation has been performed) in comparison with the information, and if the button has been pressed, a button press notification is sent to the user operation control unit 4.

The user operation control unit 4 outputs an operation signal such as a button press notification input from the display touch panel control unit 3 or a remote control unit 12 described later to the reproduction unit 5.

The playback unit 5 serving as a reading unit and playback control unit receives a disk information read request or playback start request from the front end unit 6 based on an operation signal from the user operation control unit 4 or expansion button position information from the expansion unit 11. And the decoding setting of the back end unit 8 is performed. Further, the button position information is output from the navigation data read from the DVD 14 to the expansion unit 11.

The front end unit 6 controls the optical pickup 7 such as a servo, navigation data as content control information read from the DVD 14 and AV data (video, audio) as content information, respectively, a playback unit 5 and a back end unit. Output to 8.

The optical pickup 7 irradiates the DVD 14 with laser light under the control of the front end unit 6, converts the reflected light into an electrical signal, and outputs it to the front end unit 6. The optical pickup 7 includes an optical system including an actuator, a lens, a prism, and the like that are equipped with a laser diode (not shown) and an objective lens.

The back end unit 8 decodes the AV data input from the front end unit 6, converts it into an AV data stream, and outputs it to the DAC 9.

The DAC 9 performs digital / analog conversion on the AV data stream input from the bank end unit 8 and outputs the AV data stream to the outside from the output terminal 10 as a video signal or an audio signal.

The expansion unit 11 serving as a reaction area setting unit includes a button position information storage unit 11a, a button position information expansion unit 11b, and an extended button position information storage unit 11c. Based on this, the reaction area of the display touch panel 2 is expanded.

The button position information storage unit 11 a is a memory that stores button position information input from the playback unit 5. The button position information expansion unit 11b extends the button position information (the reaction area of the display touch panel 2) with reference to the button position information storage unit 11a. The extended button position information storage unit 11c is a memory that stores the button position information extended by the button position information extension unit 11b.

The remote control controller 12 receives a radio signal from the remote controller 13 described later, and outputs an operation signal of the remote controller 13 to the user operation controller 4.

The remote controller 13 is a remote controller for remotely operating the DVD player 1 and includes buttons for operation and the like, and outputs a radio signal to the remote controller controller 12 in accordance with the button operation.

Here, the data structure in the DVD 14 as a recording medium will be described. FIG. 4 shows the structure in the case of DVD video. As shown in FIG. 4, the DVD 14 is composed of Volume File Structure, DVD-V ZONE, and DVD-V Other Zone. Volume and File Structure is an area in which a volume structure or file structure as a recording medium is recorded. DVD-V ZONE is an area in which video data, audio data, and navigation data for controlling these data are recorded. DVD-V Other Zone is an area where data other than video data and navigation data is recorded.

DVD-V Zone is composed of VMG (Video Manager) and VTS (Video Title Set). The VMG stores information for managing the VTS of the entire disc. The system menu displayed when the user calls the disc immediately after starting playback or during playback, the playback order of the VTS, title information, etc. It is recorded. The VTS can be divided into any number from 1 to 99, and video data, audio data, control information of each VTS, and the like are recorded. The VMG is composed of VMGI, VMGM_VOBS, and VMGI Backup. VMGI records VMG control information, VMGM_VOBS records the above-described system menu VOBS (video object set), and VMGI Backup records VMGI backup data. VMGM_VOBS includes a PGC (program chain). The PGM of VMGM_VOBS includes a moving image for the system menu.

The VTS is composed of VTSI, VTSM_VOBS, VTSTT_VOBS, and VTSI Backup. VTSI records VTS control information, VTSM_VOBS records menu VOBS in each VTS, VTSTT_VOBS records title VOBS in each VTS, and VTSI Backup is VTSI backup data. Is recorded. VTSM_VOBS includes PGC. The PGC of VTSM_VOBS includes a moving image for a VTS menu. VTSTT_VOBS includes one or more PGCs. In many cases, this PGC has a structure in which one PGC has one title, but one PGC (multi-PGC) can also be used.

PCG is composed of PGCI and content data. PGCI records navigation data for controlling PCG, and navigation commands such as PRE_CMD (pre-command), POST_CMD (post command), and CELL_CMD (cell command) are recorded. The content data is data of content itself such as a movie. The PGC is composed of one or more PGs (programs). PG is usually divided into chapter units. The PGC is composed of one or more CELLs. Usually, CELL is often divided into the same chapter units as PG. CELL is different from PG in that it is a data unit for playback control such as a layer boundary and a cell command.

CELL is composed of one or more VOBUs (VOB units). VOBU is a minimum unit of data packet in DVD video, and is composed of NV_PCK, V_PCK, A_PCK, and SP_PCK. NV_PCK is called a navigation pack, in which data management information for each VOBU is recorded. V_PCK records video data, A_PCK records audio data, and SP_PCK records sub-picture data. NV_PCK is composed of PCI (Presentation Control Information) and DSI (Data Search Information), navigation commands such as BTN_CMD (Button Command) and button position information are recorded in PCI, and DSI includes I picture address and the like. Search information is recorded.

BTN_CMD executes BTN_CMD corresponding to a button when the user executes a button while playing a VOBU in which BTN_CMD exists. As button position information as information regarding a display area indicating which one of a plurality of items on the menu screen is selected, coordinates of a start point and an end point of a rectangular area are recorded. The button position information is highlight information for selecting a menu item (for example, information for displaying a mark indicating selection, making a color different from other items, or blinking), and is actually displayed. For example, information on a highlight position when a button on the remote controller 13 is operated is shown instead of information on the menu itself.

Next, a method for setting a reaction area on the display touch panel 2 of the menu screen displayed when the DVD 14 is played back in the DVD player 1 and the DVD 14 having the above-described configuration will be described.

In this embodiment, the reaction region is set by performing Voronoi division based on the above-described PCI button position information. Voronoi division is a well-known method of drawing a perpendicular bisector to a straight line connecting adjacent generating points to divide the nearest neighbor area of each generating point. In this embodiment, as shown in FIG. Voronoi division is performed for each of the position information starting point and end point as mother points.

FIG. 5 shows a display on the display touch panel 2. In FIG. 5, as button position information, A (start point coordinates: Start (X, Y) = (5, 9), end point coordinates: End (X, Y) = (9, 13)), B (start point coordinates: Start (X , Y) = (16,4), end point coordinate: End (X, Y) = (19,7)), C (start point coordinate: Start (X, Y) = (19,15), end point coordinate: End ( Three regions X, Y) = (22, 18)) are defined. FIG. 5 shows a state where Voronoi division is performed between the start point coordinates and the end point coordinates.

* Determine the power range of each area from the state of FIG. As shown in FIG. 6, the power range of each region is a straight line closest to each region as a dividing line of the power range. In other words, the power range of A is the Voronoi dividing line (two-dot chain line) by the end point coordinates from the coordinates (8,0) to (10,3.5), and is the dividing line of the power range. The one-dot chain line) is the dividing line of the power range. In this way, it is possible to prevent different button position information from being in the same reaction region (A and B in the case of FIG. 5). That is, an area surrounded by a dividing line that has been subjected to Voronoi division closest to an area for distinguishing a plurality of items on the menu screen is set as a reaction area.

Then, the determined power range is set as the reaction area of the display touch panel 2. That is, A ′ in FIG. 6 becomes a new reaction region corresponding to A, B ′ becomes a new reaction region corresponding to B, and C ′ becomes a new reaction region corresponding to C. That is, based on information indicating an area for distinguishing a plurality of items on the menu screen, Voronoi division is performed, and the touch panel reaction area for each item of the menu information is set to be different from the area for distinguishing the plurality of items on the menu screen. Widely set.

In this case, since the reaction region is not rectangular, the boundary of each reaction region is obtained from the Voronoi dividing line equation, and the rectangular reaction region is stored in a memory or the like for each coordinate.

Alternatively, as shown in FIG. 7, the rectangular area is enlarged until the vertex of the rectangle (a part of the outer edge of the rectangle) intersects the dividing line of the power range while maintaining the shape of the rectangular area. It may be set as a reaction region. That is, A ″ in FIG. 7 becomes a new reaction region corresponding to A, B ″ becomes a new reaction region corresponding to B, and C ″ becomes a new reaction region corresponding to C. That is, while the shape of the region for distinguishing a plurality of items on the menu screen is maintained, the Voronoi division is performed until the dividing line and the outer edge of the region intersect, and the enlarged region is set as the reaction region. .

A specific method for enlarging the rectangular vertex (part of the outer edge of the rectangle) to intersect the dividing line of the power range while maintaining the shape of the rectangular area will be described with reference to FIG. FIG. 8 shows an example of the A region.

First, calculation of the slope and intercept of the equations of each Voronoi dividing line S1, S2, S3, E1, E2, E3 and from the point intersecting with another X axis or Y axis to the point intersecting with another Voronoi dividing line. Calculate the effective range. Next, the coordinates (four points) of each vertex of the rectangular area of the button position information are calculated. Next, the slope and intercept of the equation of the diagonal lines a and b of the rectangular area are calculated. Next, the coordinates of the point (intersection) where the equation within the effective range of the Voronoi dividing line or the X-axis or Y-axis and the diagonal line of the rectangular area intersect with each other are calculated. Next, a point closest to each vertex of the rectangular area is selected from the calculated intersection points. In the case of FIG. 8, the Z point corresponds. Next, the distance from the point Z is set as the maximum distance that can be expanded as a reaction region, and the expanded button position information is created based on the distance from the point. In other words, the distance L between End (X, Y) on the diagonal line and the Z point (Zx, Zy) is calculated, and Start (X, Y) is extended L on the diagonal line b outward (Y-axis direction). The coordinates of the Q point (Qx, Qy) obtained at this time are calculated. Next, the Q point and the Z point are stored in the extended button position information storage unit 11c as the extended button position coordinates.

The reaction area set in this way is set as a new reaction area in the display touch panel control unit 3 and detects the pressing (operation) of the user's menu item on the display touch panel 2. Then, the reproducing unit 5 performs an operation corresponding to the operation by associating the expanded reaction region with the original button.

According to the present embodiment, in the DVD player 1, Voronoi division is performed using the coordinates of the start point and end point of the rectangular area in the button position information recorded on the DVD 14, and a new display is performed based on the Voronoi division line. Since the reaction area of the touch panel 2 is set, the reaction area can be made wider than the rectangular area, and the reaction area can be optimized, so that operation errors can be reduced.

In addition, since the region surrounded by the straight line closest to each rectangular region of the dividing line divided by Voronoi is set as the reaction region of the new display touch panel 2, the region subjected to optimization by performing Voronoi division It is possible to further narrow down the region where the user or the like is likely to operate.

Further, the rectangular area is expanded until the vertex of the rectangular area (a part of the outer edge of the rectangular area) intersects the dividing line of the power range while maintaining the shape of the rectangular area, and the enlarged area is set as the reaction area of the display touch panel 2. Therefore, it is possible to further narrow down the region where the user or the like is likely to operate with respect to the region that has been optimized by performing Voronoi division. Further, since the shape of the region is rectangular, it is sufficient to hold only the coordinates of the start point and end point, and the reaction region setting process can be simplified.

In the above-described embodiment, Voronoi division is performed at each of the start point and end point of the rectangular area. However, the present invention is not limited to this, and it may be performed at least one of the vertices of the rectangular area. Since the Voronoi dividing line increases as the number of generating points increases, the accuracy of the reaction region can be further increased.

Further, in the above-described embodiment, Voronoi division is performed using the vertices of the rectangular area. However, as shown in FIG. 9, the center of gravity of the rectangular area is obtained and the center of gravity is used as the mother point to perform the Voronoi division. The power range of each rectangular area may be obtained. After obtaining the power range, as in the above-described embodiment, a region surrounded by a straight line closest to each rectangular region of the dividing line obtained by Voronoi division may be set as a reaction region of the new display touch panel 2, Even if the vertex of the rectangular area (a part of the outer edge of the rectangular area) intersects the dividing line of the power range while maintaining the shape of the rectangular area, and the enlarged area is set as the reaction area of the display touch panel 2 Good.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

In this embodiment, the extension unit 11 is partially changed as shown in FIG. The expansion unit 11 in this embodiment includes a button position information storage unit 11a, a button position information expansion unit 11b, an expansion button position information storage unit 11c, a button size change unit 11d, and a size change button position information storage unit 11e. And the transition destination title character string number storage unit 11f, and expands the reaction area of the display touch panel 2 based on the button position information and the number of title character strings input from the reproduction unit 5.

The button position information storage unit 11a and the extended button position information storage unit 11c are the same as in the first embodiment. The button position information expansion unit 11b expands the button position information with reference to the size change button position information storage unit 11e and the transition destination title character string number storage unit 11f (expands the reaction area of the display touch panel 2).

The button size changing unit 11d as the contact area storage means changes the button position information (rectangular area size) stored in the button position information storage unit 11a to a size that takes into account the ease of pressing by the user. The size change button position information storage unit 11e is a memory that stores the button position information changed by the button size change unit 11d. The transition destination title character string number storage unit 11f is a memory for recording TXTDT (text data) recorded in TXTDT_MG of VMGI described later.

Next, the extension operation of the button position information in this embodiment will be described with reference to the flowchart of FIG.

First, in step S101, the volume and text description names of all titles are stored in the memory, and the process proceeds to step S102. The text description name as the title text information is described in TXGIDT_MG (text data manager) of VMGI.

Fig. 12 shows the data structure of VMGI. VMGI includes VMGI_MAT, TT_SRPT, VMGM_PGCI_UT, PTL_MAIT, VTS_ATRT, TXTDT_MG, VMGM_C_ADT, and VMGM_VOBU_ADMAP, of which TXTDT_MGTXTDDT A plurality of TXTDT_LU_SRP and TXTDT_LU are provided corresponding to the number of VTSs. Among these, TXTDT_LU includes TXTDT_LUI, IT_TXT_SRP_SRP_VLM, IT_TXT_SRP_SRP_TT, and TXTDT. A plurality of IT_TXT_SRP_SRP_TT may be provided. That is, text data as title text information is recorded in TXTDT_LU of VMGI's TXTDT_MG. This text data is acquired at the initial initialization timing such as source ON, disk insertion, and ACC ON for in-vehicle devices, and stored in a memory (for example, inside the playback unit 5). Note that this step may be performed when a transitionable title number is obtained from a menu that is being reproduced, which will be described later (step S106).

Next, in step S102, it is determined whether or not the content with the menu or highlight (with button position information) is being reproduced. If it is being reproduced (YES), the process proceeds to step S103, and if not (NO) In the case of). That is, it is determined whether a screen that can be operated by the user is displayed. Domain information is used to determine that the menu is being played back. The domain information represents a state when the navigation command is executed in the DVD video, and there are four states of FP_DOM, VMGM_DOM, VTSM_DOM, and TT_DOM as shown in FIG. A content with a menu or highlight is being played. In addition, since there is TT_DOM in which a button exists, the presence or absence of a button may be used as a determination condition.

Next, in step S103, it is determined whether the size of the rectangular area in the button position information is easy to press as the reaction area of the display touch panel 2, and the process proceeds to step S104. For this determination, rectangular size data that a normal person feels easy to press when using the touch panel is recorded in advance, for example, inside the button size changing unit 11d, and the rectangular area of the data and button position information is recorded. Compare sizes. The rectangular size that feels easy to press is the size (D in FIG. 14) based on the area of the contact surface when a finger or the like touches the touch panel as shown in FIG. is not. It should be noted that rectangular data that a normal person feels easy to press when using the touch panel may be optimized according to the user by constantly learning the contact area on the touch panel. That is, the size of the touched area when the touch panel is touched is stored in advance.

Next, in step S104, it is determined whether or not the rectangular area determined in step S103 has a size that can be easily pressed with a finger. If it is determined that the size is easy to press (if YES), the process proceeds to step S106, and the size that is easy to press. If not (NO), the process proceeds to step S105.

Next, in step S105, since the rectangular area determined in step S103 is not a size that can be easily pressed with a finger, the size is increased to a size that can be easily pressed, and the process proceeds to step S106. That is, the rectangular area is enlarged to an easy-to-press size (D in FIG. 14) recorded in advance in the inside of the button size changing unit 11d described above.

Next, in step S106, a transitionable title number is obtained from the menu being reproduced, and the process proceeds to step S107. In this step, a transitionable title number is obtained from the menu being played. The transitionable title number will be described. As shown in FIG. 15, a video can be displayed via a dummy PGC such as a TT (title) PGC in which only a pre-command exists or a VTSM PGC in which only a pre-command exists and other domain transitions. It is possible to make a transition to a PGC where titles such as content are recorded, that is, titles that can be transitioned to be compatible with the latter transitions, that is, title numbers where content such as video is recorded. Yes. The operation of step S105 is shown in the flowcharts of FIGS. The flowcharts of FIGS. 16 and 17 execute data reading, analysis and decoding behind the scenes during menu display.

First, in step S201, it is determined whether or not all highlights (button position information) in the playback menu have been checked. If determined (YES), the process ends. If not (NO) In the case), the process proceeds to step S202.

Next, in step S202, the button command is analyzed and the process proceeds to step S203. That is, the BTN_CMD of the navigation pack is analyzed.

Next, in step S203, the result of the button command analysis determines whether or not to execute the Jump command or the Link command. When executing (YES), the process proceeds to step S204, and when not executing (NO) ) Proceeds to step S214. The Jump command is one type of command defined in the navigation command, and is a command used to start playback at a specified position in another domain. Similarly, the Link command is one type of command defined by the navigation command, and is a command used to start reproduction at a specified position in the current domain.

Next, in step S204, the PGCI information of the transition destination TT (title) is read, and the process proceeds to step S204. The transition destination is a position specified by a Jump command or a Link command.

Next, in step S205, it is determined whether or not a pre-command exists. If it exists (YES), the process proceeds to step S206, and if it does not exist (NO), the process proceeds to step S208.

Next, in step S206, the pre-command is analyzed and the process proceeds to step S207. That is, the PGCI PRE_CMD is analyzed.

Next, in step S207, the result of the pre-command analysis determines whether or not to execute the Jump command or the Link command. When executing (YES), the process proceeds to step S204, and when not executing (NO) ) Proceeds to step S208. Also in this step, it is determined whether or not to execute the Jump command or the Link command as in Step S203.

Next, in step S208, it is determined whether or not the existence of A_PCK or V_PCK can be confirmed. If it can be confirmed (YES), the process proceeds to step S215. If not confirmed (NO), the process proceeds to step S209. . That is, it is confirmed whether content exists in the PGC.

Next, in step S209, it is determined whether or not a post command exists. If it exists (YES), the process proceeds to step S210, and if it does not exist (NO), the process proceeds to step S212.

Next, in step S210, the post command is analyzed and the process proceeds to step S211. That is, PGCI POST_CMD is analyzed.

Next, in step S211, the result of the post command analysis determines whether or not to execute the Jump command or the Link command. When executing (YES), the process proceeds to step S204, and when not executing (NO) ) Proceeds to step S212. Also in this step, it is determined whether or not to execute the Jump command or the Link command as in Steps S203 and S207.

Next, in step S212, it is determined whether or not there is a next TT (title). If there is, the process proceeds to step S213, and if not, the process proceeds to step S214.

Next, in step S213, the process proceeds to the next TT and proceeds to step S204.

Next, in step S214, the process returns to step S201 to perform the next button analysis (next highlight analysis).

Next, in step S215, the presence / absence of TXTDT of the corresponding title number is confirmed. If there is (YES), the process proceeds to step S216.

Next, in step S216, the title name of the corresponding title number is acquired from TXTDT, and the process proceeds to step S217.

Next, in step S217, the number of character strings of the title name of the corresponding title number is calculated, and the process proceeds to step S214.

By performing the above flowcharts (FIGS. 16 and 17), the number of title name character strings for each highlighted menu item can be acquired. The acquired number of character strings is stored in the transition destination title character string number storage unit 11f.

Returning to the flowchart of FIG. 11, in step S107, the reaction area of the display touch panel 2 is expanded, and the process proceeds to step S108. In this step, the easy-to-press area compared in step S103 is multiplied by the number of character strings of the title name acquired in step S106, and the reaction area of the display touch panel 2 is expanded. That is, the region that is easy to press × the number of character strings is set as the reaction region. If information such as country-specific language codes is used here, it can be expanded in an appropriate direction depending on the language, such as expanding to the right in Japanese or English, and expanding to the left in Arabic. .

Next, in step S108, the reaction area of the display touch panel 2 is determined and the process ends. In this step, the coordinates of the start point and end point of the reaction area of the display touch panel 2 expanded in step S107 are stored in the expansion button position information storage unit 11c.

In this way, as shown in FIG. 18, for example, the rectangular area E in the button position information is expanded to a rectangular size D where it is easy to press and then expanded by the number of TXTDT character strings to almost match the menu item. An area can be set. In the case of FIG. 18, when TXTDT of the menu item “main part” is also two characters such as “main part”, two regions of rectangular size D that are easy to press are set as reaction regions. In addition, when TXTDT of the menu item “privilege video” is also four characters such as “privilege video”, four regions of the rectangular size D that are easy to press are set as reaction regions. That is, the reaction area is set based on the size of the area touched when the touch panel is touched and the number of characters of the title text information included in the content control information.

According to the present embodiment, in the DVD player 1, the number of title character strings recorded on the DVD 14 and the information on the rectangular area size easy to press with a finger or the like are used, and the information on the rectangular area size easy to press and the number of title character strings are expanded. Since the response area of the display touch panel 2 is the area that is easy to press (the information of the rectangular area size × the number of title character strings), the area that is wider than the button position information and that substantially corresponds to the menu item can be used as the reaction area. In addition, the reaction area can be optimized and widened to an area that is considered to be operated by a user or the like.

Also, since the navigation command is analyzed to obtain the PGC character string in which A_PCK or V_PCK exists, the number of character strings of the PGC title in which the content is recorded can be reliably obtained.

Note that the first embodiment, that is, Voronoi division, may be performed after YES in step S201 in the flowchart of FIG. In this way, it is possible to optimize the reaction area even for menu items without TXTDT.

Further, by performing the present embodiment within each power range divided by Voronoi before performing the present embodiment, even if there is no TXTDT or the display content of the TXTDT character string does not match The reaction region can be set with higher accuracy.

Next, a third embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first and second embodiments described above are denoted by the same reference numerals and description thereof is omitted.

In this embodiment, the extension unit 11 is partially changed as shown in FIG. The expansion unit 11 in this embodiment includes a button position information storage unit 11a, a button position information expansion unit 11b, a scanning unit 11g, a character coordinate image data storage unit 11h, and a touch panel reaction area coordinate storage unit 11i. The reaction area of the display touch panel 2 is expanded based on the button position information input from the reproduction unit 5 and the data recognized by scanning the menu screen.

The button position information storage unit 11a is the same as that in the first embodiment. The button position information expansion unit 11b refers to the button position coordinates and the data that has been scanned and recognized, determines which button should be combined with which character recognition coordinates, and the reaction area of the display touch panel 2 Set. The scanning unit 11g as a character recognition unit scans the displayed menu image, performs character recognition, and acquires coordinate data of the character part. The character coordinate image data storage unit 11h is a memory that stores the coordinate data of the character portion acquired by the scanning unit 11g. The touch panel reaction area coordinate storage unit 11i is a memory that stores the reaction area of the display touch panel 2 set by the button position information expansion unit 11b.

Next, the expansion operation of the reaction area of the display touch panel 2 in this embodiment will be described with reference to the flowchart of FIG.

First, in step S301, the presence / absence of button information is confirmed. If there is (YES), the process proceeds to step S302. If not (NO), the process waits in this step. The presence or absence of button information determines whether or not there is an item having highlight information on the menu screen.

Next, in step S302, a scan process is performed to recognize a character string on the menu screen and acquire a coordinate position of the character string, and the process proceeds to step S303. Details of this step are shown in the flowchart of FIG.

First, in step S401, menu image data is acquired, and the process proceeds to step S402. In this step, video data is acquired by the scanning unit 11g from the AV data output from the back-end unit 8 when the menu screen is displayed.

Next, in step S402, character recognition processing such as correction of character information and extraction of character feature amounts is performed, and the process proceeds to step S403. In this step, character recognition processing such as character information correction, character feature amount extraction, recognition and identification, and coordinate information calculation is performed. In the present embodiment, it is sufficient that the coordinates of the character can be acquired. Therefore, identification of the character itself (collation with dictionary data or the like for each character) may be omitted. As a character recognition method, a known method such as a pattern matching method, a sonde method, or a stroke analysis method may be used.

Next, in step S403, it is determined whether or not there is a character image in the process performed in step S402. If there is a character image (YES), the process proceeds to step S404, and if not (NO), the process ends. In the case of NO in this step, for example, the Voronoi division of the first embodiment may be performed to optimize the reaction region.

Next, in step S404, the coordinates of the character image are acquired and the process ends. That is, the coordinates of the character image are stored in the character image coordinate data storage unit 11h.

Then, returning to the flowchart of FIG. 20, in step S303, the button position information expansion unit 11b reads the character image coordinate data from the character image coordinate data storage unit 11h, and proceeds to step S304.

Next, in step S304, the button position information expansion unit 11b reads the button position information from the button position information storage unit 11a, and proceeds to step S305.

Next, in step S305, character image coordinate data and button position information are compared and assigned, and the process proceeds to step S306. The comparison and assignment process between the character image coordinate data and the button position information is a process of determining which button (highlight area described in the highlight information) should be combined with the character image recognized in step S303. Details of this step will be described with reference to FIG. FIG. 22 shows a case where F and G are set as the rectangular area (highlight area) of the button position information, and H and I are set as the character images recognized in step S302. For example, in the case of the rectangular area F, the distance from each vertex of the rectangular area F to each vertex of the character images H and I is calculated, and the character image H located at the shortest distance among them is set as the character image corresponding to the rectangular area F. That is, the position indicating the character on the menu screen recognized by the character recognition means closest to the position of the area for distinguishing a plurality of items on the menu screen is set as the reaction area. The above-described operation is shown in the flowchart of FIG.

First, in step S501, the distance between all character image coordinate data is calculated based on the button position information, and the process proceeds to step S502.

Next, in step S502, it is determined whether or not the character image data has the shortest distance. If the character image data has the shortest distance (YES), the process proceeds to step S503. If not (NO), the process ends. To do. The case of NO in this step is when there are a plurality of character image data having the shortest distance, or when completely different character image data is selected at each vertex. In this case, for example, the Voronoi division of the first embodiment or the second embodiment may be performed.

Next, in step S503, the corresponding character image coordinate data is combined with the button command, and the process ends. That is, in the case of FIG. 22, the character image H is a reaction region when the rectangular region F is selected, and the character image I is a reaction region when the rectangular region G is selected.

Then, returning to the flowchart of FIG. 20, in step S306, the touch panel reaction area coordinate storage unit 11i stores the touch panel reaction area coordinates, and the process ends.

According to the present embodiment, the DVD player 1 scans the character string of the displayed menu image to perform character recognition to obtain the coordinate position of the character, and the coordinate position closest to the button position information (highlight information). Since this is used as the reaction area of the display touch panel 2, it is wider than the button position information, and the reaction area is optimized and can be widened to an area considered to be operated by the user.

Note that the comparison and assignment processing of the character image coordinate data and the button position information in step S305 in FIG. 20 described above is performed by performing the Voronoi division shown in the first embodiment and then determining which character image has been recognized in step S303. It may be determined whether it is combined with a button (highlight).
Details are shown in the flowchart of FIG.

First, in step S601, Voronoi division is performed based on the button position information, and the process proceeds to step S602.

Next, in step S602, it is determined whether or not there is an area in which the character image is recognized in the Voronoi division area of the button position information n. If yes (YES), the process proceeds to step S603, and if not ( In the case of NO), the process proceeds to step S604. That is, it is determined whether or not the character coordinate image data read from the character coordinate image data storage unit 11h exists in the Voronoi division area.

Next, in step S603, the corresponding character image coordinate data is registered in the reaction area of the display touch panel 2, and the process proceeds to step S604. That is, the corresponding character image coordinate data is stored in the touch panel reaction region coordinate storage unit 11i.

Next, in step S604, the button position information is registered in the reaction area of the display touch panel 2, and the process proceeds to step S605. That is, the button position information of the Voronoi division area is stored in the touch panel reaction area coordinate storage unit 11i.

Next, in step S605, the button command of the button position information n is registered in the touch reaction area, and the process ends. The process up to this step is performed, and the touch reaction area for the button and the corresponding command are associated and stored in the touch panel reaction area coordinate storage unit 11i.

By doing so, for example, as shown in FIG. 25, rectangular areas (highlight areas) J, K, and L of the button position information, the character image area M corresponding to the rectangular area K of the button position information, and the button position When there is a character image area N corresponding to the rectangular area L of information and other character image areas O and P, the character image corresponding to the rectangular area of the button position information is obtained by performing Voronoi division first. Since the areas are included in the same Voronoi division area, the rectangular area K of the button position information is less likely to be associated with different character image areas such as being associated with the character image area N in FIG. Further, there is a possibility that the other character image area O may be a reaction area, but since Voronoi division is performed around the rectangular area of the button position information, there is no rectangular area of the other button position information. Even if the other character image region O is used as a reaction region, no malfunction occurs. However, in the other character image region O, only the region of O2 divided by the Voronoi dividing line is set as the reaction region of the rectangular region K of the button position information. Similarly, the rectangular area L of the button position information has the character image area M and the other character image area P as the reaction area, and the rectangular area J of the button position information has the other character image area O1 as the reaction area.

In addition, the areas may not be skipped as shown in FIG. 25, but the areas may be connected as shown in FIG.

In each of the above-described embodiments, the DVD 14 is used as a recording medium. However, the present invention is a recording medium on which information corresponding to navigation commands including button position information (highlight information) and title text information is recorded. Can be applied.

Further, the functions of the reproduction unit 5 and the expansion unit 11 in each embodiment may be configured as a program executed by the CPU of the computer.

According to the above-described embodiment, the following DVD player 1, recording medium reproduction method, and recording medium reproduction program can be obtained.

(Supplementary Note 1) A reproduction unit 5 that reads AV data and navigation data recorded on the DVD 14, an LCD that displays menu information for reproducing AV data from the navigation data read by the reproduction unit 5, and an LCD that is superimposed on the LCD. In a DVD player 1 including a display touch panel 2 for operating menu information and a playback unit 5 for playing back AV data according to the menu information based on position information where the display touch panel 2 is operated.
A DVD player 1 comprising an extension unit 11 for setting a reaction area of the display touch panel 2 for each item of menu information wider than an area indicated by the button position information on the basis of the button position information included in the navigation data. .

According to this DVD player 1, since the reaction area of the display touch panel 2 is set wider than the area indicated by the button position information, the reaction area is wider than before and operation errors can be reduced.

(Supplementary Note 2) AV data and navigation data recorded on the DVD 14 are read, menu information for reproducing the AV data is displayed from the read navigation data, and the menu information is displayed based on the position information on which the display touch panel 2 is operated. In a recording medium playback method for playing back AV data,
A method for reproducing a recording medium, comprising: setting a reaction area of the display touch panel 2 for each item of menu information to be wider than an area indicated by button position information based on button position information included in navigation data.

According to this recording medium reproducing method, the reaction area of the display touch panel 2 is set wider than the area indicated by the button position information, so that the reaction area is wider than before and operation errors can be reduced.

(Supplementary Note 3) A reproduction unit 5 that reads AV data and navigation data recorded on the DVD 14, an LCD that displays menu information for reproducing AV data from the navigation data read by the reproduction unit 5, and an LCD that is superimposed on the LCD. A DVD player computer having a display touch panel 2 for operating menu information is used as a playback unit 5 for playing back AV data in accordance with the menu information based on the position information on which the display touch panel 2 is operated. In a recording medium playback program to function,
Recording in which the computer functions as an extension unit 11 that sets a reaction area of the display touch panel 2 for each item of menu information wider than an area indicated by the button position information based on the button position information included in the navigation data Medium playback program.

According to this recording medium reproduction program, since the reaction area of the display touch panel 2 is set wider than the area indicated by the button position information, the reaction area is widened and operation errors can be reduced as compared with the conventional case.

It should be noted that the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

Claims

Read means for reading content information and content control information recorded on a recording medium; display means for displaying menu information for reproducing the content information from the content control information read by the read means; and A recording medium playback device comprising: a touch panel that is overlaid and that operates the menu information; and playback control means that plays back the content information according to the menu information based on position information where the touch panel is operated ,
Based on information about a display area (hereinafter referred to as a selection display area) indicating which of the items on the menu screen included in the content control information is selected, the touch panel for each item of the menu information A recording medium reproducing apparatus comprising reaction area setting means for setting a reaction area wider than the selection display area.
The recording medium reproducing apparatus according to claim 1, wherein the reaction area setting means sets the reaction area by performing Voronoi division based on information on a plurality of the selection display areas.
3. The recording medium reproducing apparatus according to claim 2, wherein the reaction area setting means sets the reaction area by performing Voronoi division using at least one or more of the vertices of the selection display area as a generating point.
3. The recording medium reproducing apparatus according to claim 2, wherein the reaction area setting means sets the reaction area by performing the Voronoi division using a center of gravity of the selection display area as a generating point.
5. The reaction region setting unit sets, as the reaction region, a region surrounded by a dividing line that has been subjected to the Voronoi division closest to the selection display region. 2. A recording medium reproducing device according to 1.
The reaction area setting means enlarges the dividing line that has undergone the Voronoi division while maintaining the shape of the selection display area and an outer edge of the area intersect, and sets the enlarged area as the reaction area. The recording medium reproducing apparatus according to claim 2, wherein the recording medium reproducing apparatus is a recording medium reproducing apparatus.
7. The reaction area setting unit sets the reaction area based on information on the selection display area and title text information included in the content control information. The recording medium reproducing device described.
Contact area storage means for storing in advance the size of the area touched when touching the touch panel,
The reaction area setting means determines the reaction area based on the size of the area touched when the touch panel stored in the contact area storage means is touched and the number of characters of the title text information included in the content control information. 8. The recording medium reproducing apparatus according to claim 7, wherein the recording medium reproducing apparatus is set.
Character recognition means for performing character recognition on the menu screen,
7. The reaction area setting unit sets the reaction area based on a position indicating a character on the menu screen recognized by the character recognition unit and information on the selection display area. The recording medium reproducing device according to any one of the above.
The said reaction area setting means sets the position which shows the character on the said menu screen recognized by the said character recognition means nearest to the position of the said selection display area as said reaction area. Recording medium playback device.
Read the content information and content control information recorded on the recording medium, display menu information for reproducing the content information from the read content control information, and display the menu information based on the position information on which the touch panel is operated. In the recording medium reproduction method for reproducing the content information according to the above,
The response area of the touch panel for each item of the menu information is displayed on the menu screen based on the information about the display area indicating which item on the menu screen is selected from the content control information. A method of reproducing a recording medium, characterized in that the recording medium is set to be wider than a display area indicating which one is selected.
Read means for reading content information and content control information recorded on a recording medium; display means for displaying menu information for reproducing the content information from the content control information read by the read means; and A reproduction control unit that reproduces the content information according to the menu information on a computer of an information reproduction apparatus that is superimposed and has a touch panel for operating the menu information based on position information on which the touch panel is operated In the information reproduction program that functions as
Based on the information related to the display area indicating which item on the menu screen is selected, which is included in the content control information, the reaction area of the touch panel for each item of the menu information is displayed on the menu screen. A recording medium reproduction program for causing the computer to function as a reaction area setting means for setting a wider area than a display area indicating which item is selected.
A computer-readable recording medium, wherein the recording medium reproduction program according to claim 12 is stored.