JPH1146349A - Reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reproducing device by which object video information is interactively selected by using a pointing device, such as a touch panel to directly point out a menu or an angle on a screen. SOLUTION: This reproducing device 11 that reproduces stream data recorded on a recording medium 21 is provided with a read section 31, that reads the stream data 22 from the recording medium 21, an extract section 331 that extracts menu coordinate information included in the stream data 22 and denoting a display position of a menu, a reproduction section 32 that reproduces video information representing a video image included in the stream data 22, a discriminating section 35 that discriminates whether or not the menu is selected by comparing the coordinate information entered from the user with the extracted menu coordinate information, and an execution section 34 that executes processing corresponding to the menu, in the case that it is discriminated that the menu has been selected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus for selectively outputting a video signal from a recording medium on which video information is recorded as digital data.

[0002]

2. Description of the Related Art With the recent technological innovation, 8
An optical disk having twice or more the information capacity has appeared, and an optical disk reproducing apparatus has attracted attention as a new AV device.
Along with this, an application of an optical disc that allows a user to interactively select a predetermined video from long-term video information is being studied.

A method for selecting a desired image from a plurality of images using a menu will be described below.

FIG. 5 shows an example of a conventional optical disk reproducing system. The optical disk playback system includes an optical disk playback device 51 and a display 52 such as a television.

[0005] The optical disk reproducing device 51 is controlled by a remote controller 53. The optical disk reproducing device 51 reproduces video information recorded on an optical disk (not shown), and displays the reproduced video information on a display 52.

[0006] Menu information for selecting one of a plurality of items is recorded on the optical disc. When the menu information is reproduced by the optical disk reproducing device 51, a menu is displayed on the display 52. The user selects one of a plurality of items included in the menu using the remote controller 53. For example,
When a number for specifying each of a plurality of items is displayed on the menu, pressing a key of the remote controller 53 having the same number as that number causes one of the plurality of items included in the menu to be displayed. One is selected.
Alternatively, after pressing the up / down / left / right keys of the remote controller 53 to move the highlighted area displayed on the menu up / down / left / right, the remote controller 5
By pressing the enter key 3, one of the plurality of items included in the menu may be selected and highlighted.

Next, a method of selecting one of a plurality of videos (hereinafter, referred to as “angle”) corresponding to different viewpoints of the same scene, or corresponding to different scenes, respectively, will be described. Each of the multiple angles
Different numbers are assigned to different angles and are recorded on the optical disc in an interleaved manner. When reproducing the data recorded in this way, the optical disk reproducing device 51 reproduces only one angle moving image. While playing only one angle of the moving image, the user presses the number key of the remote controller to select a number previously assigned to each of the plurality of angles. Thereby, the moving image of the angle corresponding to the selected number is reproduced.

[0008]

However, selecting one of a plurality of items included in the menu by pressing the number key of the remote controller is poor in interactivity. Alternatively, when the user can select one angle from multiple angles,
That is, it is necessary to recognize when a plurality of angles are available, and selecting one of the plurality of angles while playing a moving image of only one angle is poor in interactivity. Therefore, a function of effectively selecting a menu or an angle has been desired.

The present invention solves the above problems,
By directly instructing menus or angles on the screen using a pointing device such as a touch panel,
It is an object of the present invention to provide a playback apparatus capable of interactively selecting target video information.

[0010]

According to the present invention, there is provided a reproducing apparatus for reproducing stream data recorded on a recording medium, wherein the stream data represents menu coordinate information indicating a display position of a menu and an image. Including video information, the playback device, a reading unit that reads the stream data from the recording medium, an extraction unit that extracts the menu coordinate information included in the stream data,
A playback unit that plays back the video information included in the stream data, and determines whether the menu has been selected by comparing coordinate information input by a user with the extracted menu coordinate information. And an execution unit that executes a process corresponding to the menu when it is determined that the menu is selected,
Thereby, the above object is achieved.

[0011] The input from the user may be provided to the playback device using a touch panel.

[0012] The input from the user may be provided to the playback device using a mouse.

[0013] A reproducing apparatus of the present invention is a reproducing apparatus for reproducing stream data recorded on a recording medium, wherein the stream data includes a plurality of alternatively reproducible video information. A reading unit that reads the stream data from the recording medium, a playback unit that plays back the stream data, a detection unit that detects a section in which the plurality of pieces of video information included in the stream data is played, A video display unit that displays the video represented by the plurality of video information, and by comparing coordinate information input by a pointing device from a user with display position information indicating a display position of the plurality of videos, the plurality of video information is displayed. A determination unit that determines which video is selected from among the videos represented by the video information, and displays the video determined to be selected on the screen. Indicates the remaining picture is provided with a control unit for executing a process that does not display on the screen, thereby the objective described above being achieved.

[0014] The pointing device may be a mouse.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 shows a configuration of an optical disk reproducing system 1 according to the present invention.

An optical disk reproducing system 1 includes an optical disk reproducing device 11 for reproducing video information or audio information recorded on an optical disk (not shown), and a display for outputting video information or audio information reproduced by the optical disk reproducing device 11. 12 (for example, a television) and a touch panel 13 that is arranged on the screen of the display 12. The touch panel 13 functions as a position detection device that detects a position on the screen of the display 12. The position information detected by the touch panel 13 is input to the optical disk reproducing device 11.

FIG. 2 shows the structure of the MPEG2 stream data 22 recorded on the optical disk 21. MPE
The G2 stream data 22 is stored in the optical disc playback device 11.
(FIG. 1).

The MPEG2 stream data 22 includes at least a private stream 221 and video information 222. Private stream 221 is
It includes emphasized data 221a and valid time information 221b. The emphasis data 221a indicates that the MPEG2
It is inserted into the stream data 22. The valid period information 221b indicates the valid period of the control information of the emphasis data 221a. Note that the default validity period of the emphasis data is
This is from the processing of the emphasized data to the processing of the next emphasized data.

The emphasis data 221a includes selection item information 221.
a-1 to 221a-n. Here, n is an integer of 1 or more. The selection item information includes information on an item displayed as a selection item. For example, the selection item information includes data for highlighting a specific rectangular area on the screen to prompt the user to select a selection item. The selection items need not be numbers or characters, but may be moving images. Each of the selection item information 221a-1 to 221a-n is menu coordinate information 221.
a-k1 and control information 221a-k2. Here, k is an integer of 1 to n. The menu coordinate information 221a-k1 is information including the coordinates indicating the position of the menu, that is, the information of the coordinates of the rectangular area to be highlighted on the screen that prompts the user to make a selection.

In this specification, the optical disk 21 is referred to as an example of a recording medium. However, any recording medium other than the optical disk may be used.

FIG. 3 shows the configuration of the optical disk reproducing apparatus 11.

The optical disk reproducing apparatus 11 includes a data reading unit 31 and an MPEG2 stream data reproducing unit 32
, A private stream acquisition unit 33, a control information processing unit 34, a position comparison unit 35, and a position detection unit 36.

The data reading section 31 reads the MPEG2 stream data 22 recorded on the optical disk 21. The data reading unit 31 reads the read MPEG2
The stream data 22 is output to the MPEG2 stream data reproducing unit 32. Further, the data reading unit 31
The private stream 221 included in the read MPEG2 stream data 22 is extracted, and the extracted private stream 221 is output to the private stream acquisition unit 33.

MPEG2 stream data reproducing unit 32
Receives the MPEG2 stream data 22 from the data reading unit 31, and reproduces the received MPEG2 stream data 22. The MPEG2 stream data reproducing unit 32 outputs the reproduced MPEG2 stream data 22
Is output to the display 12 (FIG. 1). The display 12 (FIG. 1) displays the reproduced MPEG2 stream data 22. When the video information 222 included in the MPEG2 stream data 22 is reproduced, the display 1
An image is displayed in 2 (FIG. 1). The selection item information 221a-k (k:
When an integer of 1 to n, the same applies hereinafter (FIG. 2), a menu is displayed on the display 12 (FIG. 1).

The private stream acquisition unit 33 sends the private stream 221
From the acquired private stream 221, menu coordinate information 221a-k1 and control information 221a-k1.
k2 and valid time information 221b (both in FIG. 2) are extracted.

The extraction of the menu coordinate information 221a-k1 is performed by the emphasis data analysis section 331 analyzing the emphasis data 221a included in the MPEG2 stream data 22. The extraction of the control information 221a-k2 and the valid time information 221b is performed by the control information acquisition unit 332.
Done by

The extracted menu coordinate information 221a-k
1 is output to the position comparing unit 35. The extracted control information 221a-k2 and valid time information 221b are output to the control information processing unit 34.

The position detector 36 detects a position input by the user from the touch panel 13. The detected position information is converted into coordinate information representing coordinates on the screen, and the position
5 is output.

The position comparing section 35 compares the coordinate information detected by the position detecting section 36 with the menu coordinate information 221a-k1 received from the emphasized data analyzing section 331.
It is determined whether or not the position indicated by the detected coordinate information is included in the area specified by the menu coordinate information. Based on the result of the determination, the position comparing section 35 outputs control information corresponding to the area determined to include the position indicated by the detected coordinate information to the control information processing section 34.

A more detailed operation of the position comparison unit 35 is described in FIG.
It will be described in the description.

When the position comparing section 35 determines that the position indicated by the input coordinate information is included in the rectangular area indicated by the menu coordinate information, the position comparing section 35 sets the selected item to It is determined that the selected item has been selected, and a control signal for changing the highlighted rectangle display to the position where the selected item is displayed is output to the control information processing unit 34. The control information processing unit 34 that has received the control signal controls the display so as to change the highlighted rectangle display to that position. If it is determined that the area of the selection item in which the rectangular area is highlighted is specified for a predetermined time or more, the position comparing unit 35 determines that the selection item is selected. The position comparison unit 35 outputs control information corresponding to the selected item to the control information processing unit 34. The control information processing unit 34 controls the data reading unit 3 to reproduce the moving image information selected based on the input control information.
Control 1

The control information processing unit 34 receives control information 221a-k2 and valid time information 221b from the control information acquisition unit 332 included in the private stream acquisition unit 33.
Is received from the position comparison unit 35 as control information. The control information processing section 34 controls the data reading section 31 based on the received information. The data reading unit 31 controlled by the control information processing unit 34 reads necessary MPEG2 stream data.

FIG. 4 shows a screen of the display 12 on which the MPEG2 stream data is reproduced and three selection items, ie, menus 1 to 3, are displayed. Although not shown in FIG. 4, a touch panel 13 (FIG. 1) is provided so as to cover the screen of the display 12.

In menu 1, the diagonal position is represented by coordinates (X ₁ ,
Y ₁ ) and coordinates (X ₁ ′, Y ₁ ′). The coordinates (X ₁ , Y ₁ ) and the coordinates (X ₁ ′, Y ₁ ′) are, for example, menu coordinate information 221a included in the selection item information 221a-1 shown in FIG.
It is represented by -11.

In menu 2, the diagonal position is represented by coordinates (X ₂ ,
Y ₂ ) and a coordinate (X ₂ ′, Y ₂ ′). The coordinates (X ₂ , Y ₂ ) and the coordinates (X ₂ ′, Y ₂ ′) are, for example, menu coordinate information 221a included in the selection item information 221a-2 shown in FIG.
-21.

In the menu 3, the diagonal position is represented by coordinates (X ₃ ,
Y ₃ ) and coordinates (X ₃ ′, Y ₃ ′). The coordinates (X ₃ , Y ₃ ) and the coordinates (X ₃ ′, Y ₃ ′) are, for example, the menu coordinate information 221a included in the selection item information 221a-3 shown in FIG.
It is represented by -31.

Although the position of the menu is represented by coordinates in the present embodiment, the position may be other than the coordinates as long as the position of the menu is specified. In the present embodiment, the menu is a rectangular area, but the menu is not limited to a rectangular area.

The method of determining whether the menu is selected by the position comparing section 35 (FIG. 3) will be described in more detail.

The determination as to whether or not menu 1 shown in FIG. 4 has been selected is performed according to (Equation 1).

[0041]

[Number 1] X _n> X ₁ and _{X n <X 1 'Y n} > Y 1 and Y _n <Y _1' Here, (X _1, Y ₁₎ is the upper left of the rectangular area specified by the menu coordinate information Indicates the coordinates of the vertex of (X ₁ ′,
Y ₁ ′) indicates the coordinates of the lower right vertex. (X _n , Y _n ) indicates coordinate information detected by the position detection unit 36 (FIG. 3).

If (Equation 1) holds, the menu 1
Is determined to be selected. This is because the input position is inside the rectangular area indicated by the menu coordinate information.

When it is determined that menu 1 has been selected, that is, after it has been determined that menu 1 has been designated for a certain period of time or more, control information corresponding to menu 1 is output to control information processing unit 34. Control information processing unit 34
Controls the data reading unit 31 to highlight a rectangular area corresponding to the menu 1 based on the input control information and reproduce predetermined moving image information.

If (Equation 1) does not hold, it is determined that menu 1 has not been selected. This is because the input position is outside the rectangular area indicated by the menu coordinate information.

As described above, since the user can easily select the menu visually, it is not always necessary to attach numbers or characters to the menu, and the menu may be a moving image.

As described above, when the optical disk reproducing apparatus according to the first embodiment is used, the menu can be selected only by instructing the menu on the screen, and the optical disk reproducing apparatus can be controlled by executing the control information.

In the present embodiment, the data recorded on the optical disk is MPEG2 stream data, but the present invention is not limited to this. The data recorded on the optical disc may be other moving image stream data.

In the present embodiment, the position detecting device on the display is a touch panel. However, any device capable of detecting a position need not be a touch panel. When the optical disk reproducing device according to the present invention is connected to a computer, the position detecting means on the screen can be a pointing device such as a mouse or a pen tablet.

Even when the image is enlarged or reduced on the display of the computer, it is possible to correctly determine which position of the displayed image has been pointed. Since the computer knows the original size of the video being played, it is necessary to calculate the position of the input image relative to the currently displayed video in the original video. Because it can be. The calculation result is output to the optical disc reproducing device as relative position information.

(Embodiment 2) Hereinafter, FIGS. 6, 7, and 8 will be described.
An embodiment of the present invention will be described with reference to FIG.

FIG. 9 shows the configuration of an optical disk reproducing system 9 according to the present invention.

The optical disk reproducing system 9 includes a computer 92 having a built-in optical disk reproducing device 70, a display 93, and a mouse 94 as a position detecting device on the screen of the display 93.

The display 93 is connected to the computer 92, receives video output data output from the computer 92, and displays a video. The mouse 94 is connected to a computer 92 as position input means. The optical disk reproducing device 70 reproduces video information or audio information recorded on an optical disk (not shown). The optical disk reproducing device 70 is connected to a mouse 94 via a computer 92.
And outputs an audio signal or a video signal to a speaker (not shown) or a display 93.

In this embodiment, the optical disk reproducing device 70 is built in the computer. However, the optical disk reproducing device 70 may be provided outside the computer 92.

Alternatively, the computer 93 may perform some of the functions of the optical disk reproducing device 70. For example, a computer may reproduce information recorded on an optical disc.

In this specification, an optical disk is referred to as an example of a recording medium. However, any recording medium other than the optical disk may be used.

FIG. 6 shows the structure of the MPEG2 stream data 612 recorded on the optical disk 611. M
The PEG2 stream data 612 is reproduced by the optical disk reproducing device 70 (FIG. 9).

The MPEG2 stream data 612 includes management information 628a, 628b, 628c and video information 63.
0 and audio information 631. Management information 628a, 6
28b and 628c are recorded in the MPEG2 stream data 612 at predetermined intervals. The video information 630 represents video information. The audio information 631 represents audio information.

The MPEG2 stream data 612 includes a multi-angle data structure. Here, the multi-angle data structure refers to a data structure in which video data 630 and audio data 631 of a plurality of angles are divided into blocks and interleaved with each other. For example, a multi-angle data structure is a block 1 (62
4), a structure including block 1 of angle 2 (625),..., Block n of angle 1 (626), and block n of angle 2 (627).

The time during which the MPEG2 stream data 612 is reproduced is the time during which the information of the multi-angle data structure is reproduced (angle reproduction section 622).
And time during which information other than the multi-angle data structure portion is reproduced (normal reproduction sections 623a and 623b)
Divided into

During the reproduction of the MPEG2 stream data 612, an angle reproduction section 622 is detected based on the management information. The management information includes the presence / absence of an angle section and the recording position information of the block of each angle for a predetermined section. By detecting the angle reproduction section 622, a plurality of angles of video can be reproduced and displayed on the same screen as described later.

FIG. 7 shows the structure of the optical disk reproducing apparatus 70.

The optical disk reproducing apparatus 70 includes a data reading section 71 and an MPEG2 stream data reproducing section 72.
, A control unit 73, a storage size position changing unit 74, a video data output unit 75, and a video data storage unit 76.

The data reading section 71 is an optical disk 611.
Of the MPEG2 stream data 612 recorded in the. The data reading unit 71 stores the read MPEG data.
The two-stream data 612 is stored in an internal memory buffer (not shown) in a predetermined unit. Data reading unit 71
Outputs the MPEG2 stream data 612 stored in the internal memory buffer to the control unit 73. The data reading unit 71 receives the result of determining the type of data included in the MPEG2 stream data 612 from the control unit 73. Based on the determination result received from the control unit 73, the data reading unit 71 performs the video information 630 and the audio information 63 included in the MPEG2 stream data 612
1 to the MPEG2 stream data reproducing unit 72,
The management information 628a to 628c is held in the memory buffer. Further, the data reading unit 71 receives control information for specifying which angle block is to be read from the control unit 73, and reads only the block of the specified angle from the optical disc 611.

MPEG2 stream data reproducing section 72
Receives the video information 630 and the audio information 631 from the data reading unit 71. The MPEG2 stream data reproducing unit 72 receives the video information 630 and the audio information 6
31 are separated and subjected to necessary conversion processing to output them, and the video information 630 and the audio information 631 are reproduced. The MPEG2 stream data reproducing unit 72 outputs the reproduced video information 630 as video data 630 'to the storage size position changing unit 74, and outputs the reproduced audio information 631 as audio output data 631' to the outside of the optical disc reproducing device 70. .

The control unit 73 receives the MPEG2 stream data 612 from the data reading unit 71. The analysis unit 731 analyzes the MPEG2 stream data 612, and determines whether the data under analysis is the video information 630, the audio information 631, or the management information 628a to 628c according to a method defined by MPEG2. I do.
The control unit 73 outputs the result of the determination to the data reading unit 71.

When the playback of the MPEG2 stream data 612 reaches the angle playback section 622 (FIG. 6), the analysis section 731 of the control section 73 determines that the playback section is in the angle playback section based on the judgment of the management information stored in the internal memory buffer. It detects that it is a section. When the playback section is determined to be an angle playback section, the analysis unit 731 further performs management information 628a to 628 held in the internal memory buffer.
Analyze c. As a result of the analysis, the calculation unit 732 calculates the number of screen divisions according to the number of interleaved angles and the reduction ratio for each angle video. For example, if the number of angles is 4, the number of screen divisions is 4, and the reduction ratio of the video is 1/4. When the number of screen divisions and the reduction ratio are determined, the control unit 73 outputs a storage information signal 735 including the angle number, the number of screen divisions, and the reduction ratio to the storage size position changing unit 74. The output of the storage information signal 735 is performed based on the angle number of the angle block being reproduced.

The position information indicating the position on the screen designated by the user using the mouse is detected by the position detecting unit 77, and the detected position information is converted into coordinate information indicating the coordinates on the screen, and the position comparing unit 77 733. The position comparing unit 733 determines which angle the position indicated by the position information detected by the position detecting unit 77 indicates is displayed. As a result of the determination, the control unit 73
1 controls the data reading unit 71 so as to read only the angle block displayed at the position indicated by the position information.

The storage size position changing section 74 is a MPEG2
The converted video information 630 is received from the stream data reproducing unit 72 as video data 630 ′, and the storage information signal 735 is received from the control unit 73. The storage size position changing unit 74 performs the MPEG2 stream data reproduction unit 72 based on the reduction ratio included in the storage information signal 735.
Reduce the size of the video data 630 'input from. Further, based on the screen division number and the angle number stored in the storage information signal 735, the storage size position change unit 74 determines whether the video data 63 is stored before storing it in the video data storage unit.
Determine where on the screen 0 'is displayed. The video data 630 'is stored in units of one screen. The storage location is preferably determined not to overlap the screen of the previously stored video data 630 ', but may be determined to overlap. After reducing the size of the video data 630 ′ and determining the storage position, the storage size position change unit 74
Outputs the video data 630 ′ to the video data storage unit 76.

The video data storage section 76 receives the video data 630 'from the storage size position changing section 74. The video data storage unit 76 stores the received video data 630 '. The video data storage unit 76 outputs the stored video data 630 ′ to the video data output unit 75.

The video data output unit 75 receives the video data 630 ′ stored in the video data storage unit 76 from the video data storage unit 76, and receives, for example, NTSC (National Television System Committee,
United States Television System Committee, number of scanning lines = 525, frame frequency = 30 Hz, video signal bandwidth = 4.2 MHz, horizontal synchronization frequency = 15.75
0kHz) signal and output to the outside.

For example, when the number of screen divisions is four, the video data of angle number 1 is
Assuming that the video data of the angle number 2 is video data 2, the video data of the angle number 3 is video data 3, and the video data of the angle number 4 is video data 4, the respective video data are stored in the positions shown in FIG. Is output.

The video data of each angle is drawn as an index video of each angle. Here, the index video refers to a video represented by video information included in each angle block. When storage of the interleaved angle video data (4 angles in the above example) has been completed, the previous index video is updated with the video data of the angle read in the next angle cycle. During the update of the index video, the video data output unit 75 reads and outputs the video data of the entire storage area of the video data storage unit 76. This allows the user to visually recognize that the angle reproduction section 622 of the MPEG2 stream data is currently being reproduced and what angle is valid in this angle reproduction section 622.

During the above-described index video display processing, the user can determine the angle to be reproduced and can specify the position at which the corresponding angle is displayed using the mouse 94 (FIG. 9). In accordance with the designation from the user, the control unit 73 cancels the index video display processing and controls the data reading unit 71 to reproduce only the specified angle in the same manner as when a single video is reproduced. afterwards,
The reproduced angle is displayed on the display 93 (FIG. 9).

It is to be noted that the determination of which angle has been designated is made by the position comparing section 733 (FIG. 7), and the processing is similar to the processing of determining whether or not the menu described in the first embodiment is selected. Done. That is, the position on the screen input by the user using the mouse 94 (FIG. 9) is represented by coordinates, and the position of the area where each angle is displayed is represented by coordinates calculated based on the number of screen divisions and the reduction ratio. By doing so, the same processing as that for determining whether or not the menu described in the first embodiment has been selected is performed, and the mouse 94
It is possible to determine which angle the position input from (FIG. 9) is displayed.

As described above, the optical disk reproducing apparatus system capable of interactively selecting target video information by directly instructing a predetermined angle among a plurality of angles using a mouse connected to a computer has been described.

In the present embodiment, the selection of the angle reproduced in the index video display processing is performed by designating the angle position to be selected with the mouse. However, a device for designating the angle position is used. Is not limited to mice. For example, as described in Embodiment 1, a pointing device such as a touch panel or a pen tablet can be used. By comparing the position on the display screen indicated by these pointing devices with the position of the index image,
The user can interactively select the angle.

Alternatively, the angle reproduced in the index video display processing can be selected by designating the number of the angle to be selected with a remote controller or the like.

Even when the image is enlarged or reduced on the display of the computer, it is possible to correctly determine which position of the displayed image has been pointed. Since the computer knows the original size of the video being played, it is necessary to calculate the position of the input image relative to the currently displayed video in the original video. Because it can be. The calculation result is output to the optical disc reproducing device as relative position information.

In the present embodiment, one MPEG2 stream called a program stream is used.
The angle playback section is realized by dividing one video elementary stream for each angle, but uses a multi-stream called a transport stream composed of a plurality of MPEG streams, and separates the video of each angle independently. It may be stored in a stream.

In the present embodiment, information for identifying an angle playback section during playback of MPEG2 stream data is stored in management information interleaved at predetermined intervals in MPEG2 stream data. It may be stored in an area different from the area where the MPEG2 stream data is stored. However, in this case, the optical disc reproducing apparatus reads out the identification information at the start of the reproduction, holds
The reproduction of the EG2 stream data is started.

[0082]

As described above, according to the present invention, the user can select a predetermined menu or angle by directly instructing a menu or an angle on the screen using the pointing device.

Further, since the user can select a menu by directly instructing the menu on the screen, the menu does not necessarily need to include a number, and the degree of freedom in content creation increases.

Further, the user can control the displayed video by selecting an image on the screen without understanding numerical values and characters.

In the multi-screen mode, all angles recorded on the optical disc by interleaving can be reproduced and displayed on the same screen as index video. The user can easily and visually select the video content of the target angle based on the index video.

[Brief description of the drawings]

FIG. 1 is a diagram showing an optical disc reproduction system 1 according to the present invention.

FIG. 2 is an optical disc 2 according to the first embodiment of the present invention.
FIG. 2 is a diagram showing a data structure of data recorded in No. 1;

FIG. 3 is a diagram showing a configuration of an optical disc reproducing device 11 according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a menu being reproduced according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a conventional optical disc reproducing device according to the first embodiment of the present invention.

FIG. 6 shows an optical disc 6 according to a second embodiment of the present invention.
FIG. 11 is a diagram showing a data structure of data recorded in No. 11.

FIG. 7 is a block diagram illustrating a configuration of an optical disc reproducing device 70 according to Embodiment 2 of the present invention.

FIG. 8 is a diagram illustrating a reproduction example of video data according to the second embodiment of the present invention.

FIG. 9 is a diagram showing an optical disc reproduction system 9 according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Optical disk reproducing apparatus 21 Optical disk 31 Data reading part 32 MPEG2 stream data reproducing part 33 Private stream acquisition part 34 Control information processing part 35 Position comparison part 36 Position detection part 331 Emphasis data analysis part 332 Control information acquisition part

Claims (5)

[Claims] 1. A reproducing apparatus for reproducing stream data recorded on a recording medium, wherein the stream data includes menu coordinate information indicating a menu display position and video information indicating a video, A reading unit that reads the stream data from the recording medium; an extraction unit that extracts the menu coordinate information included in the stream data; a playback unit that plays back the video information included in the stream data; A determination unit that determines whether or not the menu is selected by comparing the extracted coordinate information with the extracted menu coordinate information; and a determination unit that determines whether the menu is selected. A playback device, comprising: an execution unit that executes processing to be performed. 2. The playback device according to claim 1, wherein the input from the user is provided to the playback device using a touch panel. 3. The playback device according to claim 1, wherein the input from the user is provided to the playback device using a mouse. 4. A reproducing apparatus for reproducing stream data recorded on a recording medium, wherein the stream data includes a plurality of alternatively reproducible video information, and the reproducing apparatus converts the stream data to the A reading unit that reads from a recording medium; a playback unit that plays back the stream data; a detection unit that detects a section in which the plurality of pieces of video information included in the stream data are played back; An image display unit for displaying an image represented by the information, and a coordinate device input by a pointing device and a display position information indicating a display position of the plurality of images. A determination unit for determining which video is selected, displaying a video determined to be selected on the screen, and displaying the remaining video. A control unit for executing a process of not displaying an image on a screen. 5. The playback device according to claim 4, wherein the pointing device is a mouse.