JP3556311B2 - Recording medium playback device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a recording medium reproducing apparatus for reproducing a recording medium on which a main image such as a moving image and a sub-image reproduced at the same time are recorded as image data.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a system for reproducing an optical disk on which audio / video data is recorded has been widely used, and has been applied to reproduction of movie software, a karaoke system, and the like. In recent years, an optical disk system that can record higher-quality images for a longer time on an optical disk of the same size as a conventional CD by using a technique for compressing and encoding moving image data has been studied.
[0003]
FIG. 4 is a diagram showing a logical format of recording data in such a conventional optical disk.
[0004]
As shown in FIG. 1, a data stream 100 as recording data is logically divided into units called data units (hereinafter, referred to as DUTs) 101. The DUT 101 includes a DUT header 102, sub-video data 103, audio data 104, and main video data 105. The main video data 105 is data compressed by a compression method of an international standard such as MPEG2. The sub-picture data 103 is character information that is supplementarily added to the main picture. For example, if the main video is a movie, the caption data of the movie is recorded as the sub video data 103 if the main video is a karaoke video. The sub-picture data 103 has a plurality of (m) channels 106 to 110. For example, when the main video is a movie, subtitle data of different language types such as English, French, and Japanese are recorded in these sub-video channels 106 to 110, respectively. From the plurality of sub-video channels 106 to 110, only the sub-video data of the channel previously selected by the user is reproduced.
[0005]
On the other hand, as shown in FIG. 5, the DUT header 102 describes position information (address) of each sub-video channel. Therefore, when an arbitrary channel is selected by the user, the reproducing device can acquire the address of the target sub-video channel based on the header information and reproduce the target sub-video channel.
[0006]
As described above, there is a system that can superimpose a sub-image on a main image. However, the use of sub-pictures is currently limited to simple picture information such as subtitles and lyrics.
[0007]
[Problems to be solved by the invention]
As described above, conventionally, sub-pictures have only been used for subtitles, lyrics, and the like of main pictures. Therefore, the present invention is to record supplementary information on an object in a main image as a sub-image and display the supplementary information on the object simultaneously with the main image by arbitrarily selecting a desired object by a user. an object of the present invention is to provide a can ∎ you can recording medium reproducing apparatus of.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the recording medium reproducing apparatus of the present invention unitizes at least a main video packet and a sub video packet which are treated as reproduction targets in the same period on the same time axis, and this unit is A plurality of sub-picture packets are recorded consecutively, and the sub-picture packet is a group of supplementary information relating to individual objects appearing in the main picture of the main picture packet, and a menu constituting a menu for selecting an arbitrary object from the main picture In a reproducing apparatus for reproducing a recording medium including configuration information, a menu reproducing means for extracting menu configuration information from a sub-video packet, reproducing the menu information and displaying a menu together with a main video, and an arbitrary menu from among the displayed menus. Supplementary information reproducing means for extracting supplementary information relating to the selected object from the sub-video packet, reproducing the extracted sub-picture packet, and displaying it together with the main video It is characterized in that it comprises a.
[0011]
Further, in order to achieve the above-mentioned object, the recording medium reproducing apparatus of the present invention unitizes at least a main video packet and a sub-video packet, which are treated as reproduction targets in the same period on the same time axis. A plurality of units are continuously recorded, and the sub-video packet includes a group of supplementary information on individual objects appearing in the main video of the main video packet, and a first group for selecting an arbitrary object from the main video. First menu configuration information configuring a menu and a plurality of second menu configurations configuring a second menu for selecting arbitrary information from information relating to an object selected in the first menu In a reproducing apparatus for reproducing a recording medium including information and information, first menu configuration information is extracted from a sub-picture packet, and is reproduced to display a first menu together with a main picture. A first menu reproducing means for extracting, from a sub-picture packet, second menu configuration information corresponding to an object arbitrarily selected from the displayed first menu, and reproducing this to reproduce a main picture; A second menu reproducing means for displaying a second menu together with the sub-picture packet, extracting supplementary information relating to an object arbitrarily selected from the displayed second menu from the sub-picture packet, and reproducing the extracted supplementary information. And a supplementary information reproducing means for displaying the information together with the video.
[0012]
[Action]
Since record medium reproducing apparatus of the present invention is constructed as described above, the menu for selecting an arbitrary object from the main video display with the main image, is selected in the menu object Supplementary information about the object can be displayed together with the main image. As described above, in the present invention, a new use of the sub-picture can be realized, and the sub-picture can have a selective element using a menu.
[0013]
Further, by arranging the menu hierarchically, it is possible to maintain high operability even if the type and number of supplementary information are increased.
[0014]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
FIG. 1 is a diagram showing a configuration of a data stream to be reproduced by the reproducing apparatus according to the embodiment of the present invention.
[0016]
As shown in the figure, a unit as a data unit constituting the data stream 1 is composed of a main video packet, a sub-video packet, and an audio packet (not shown) which are treated as reproduction processing targets in the same period on the same time axis. Consists of
[0017]
The main video packet includes a main video header 2 and main video data 3. The sub-picture packet has a data structure that allows selection of a sub-picture that can be reproduced simultaneously with the main picture using a menu. In the present embodiment, supplementary information (such as a profile of a character and a brief description of an object) on a target (target) such as a character or another object displayed in the main image is recorded as a sub-image.
[0018]
That is, as shown in FIG. 1, the sub-video packet constitutes a plurality of target video channels (CH) 4, 5, 6, and 7, which are supplementary information about the target, and a menu for selecting the target video channel. It is composed of a plurality of menu video channels (CH) 8, 9, and 10 for each target, and a target menu video channel (CH) 11 constituting a target menu for selecting the menu video channel. Here, the target menu is used to select the type of target, and the menu is used to select the type of information related to the selected target.
[0019]
Each of the menu video channels 8, 9, and 10 includes a header 21 and menu video data 22, respectively. The header 21 includes addresses 23, 24, and 25 of target video channels that can be selected in this menu. The target menu video channel 11 includes a header 31 and menu video data 32. The header 31 includes addresses 33, 34, 35, etc. of all the menu video channels 8, 9, 10.
[0020]
On the other hand, the main video header 2 of the main video packet MP includes a flag 41 indicating presence / absence of the target menu video channel 11, that is, presence / absence of information on the target, an address 42 of the target menu video channel 11, and the like. The main video channel data 3 is main video data such as moving image compression data.
[0021]
Next, a procedure for displaying supplementary information on the target in the data stream will be described.
[0022]
1) The address of the target menu video channel 11 is read from the main video header 2 and the menu video data 32 of the target menu video channel 11 is reproduced based on this address to display the target menu.
[0023]
2) When an arbitrary target is selected from the target menu by the user, the address of the menu video channel corresponding to the selected target is read based on the header 31 of the target menu video channel 11, and based on this address. The menu video data 22 of the target menu video channel is reproduced, and an information type menu for selecting the type of supplementary information on the target is displayed.
3) When an arbitrary target is selected from the menu by the user, the address of the selected target video channel is read based on the header 21 of the menu video channel, and the target video channel is reproduced based on this address. To display supplementary information about the target.
[0024]
Next, a device for reproducing this data stream will be described. FIG. 2 is a block diagram showing a configuration of the reproducing apparatus.
[0025]
Data read from the disk 61 by the pickup 62 is sent to the synchronous reproduction circuit 64 via the waveform equalization PLL circuit 63. The data demodulated by the synchronous reproduction circuit 64 is subjected to error correction by the ECC circuit 65, and is output as a data stream having the data structure shown in FIG.
[0026]
The output data of the ECC circuit 65 is separated into video and audio data by a video / audio separation circuit 67, and the audio data is reproduced by an audio reproduction circuit 68 and output through a speaker 69. On the other hand, the video data (main video and sub-video) is supplied to the main video header detection circuit 70 and the menu header detection circuit 71.
[0027]
The main video header detection circuit 70 extracts the main video header 2 from the main video packet, and supplies the main video data 3 to the main video reproduction circuit 72. The main video data reproduced by the main video reproduction circuit 72 is added to the sub-video data by the multiplexing circuit 73 and then output to the TV 75 via the NTSC generator 74.
[0028]
On the other hand, the main video header detection circuit 70 detects the flag 41 in the main video header 2 extracted from the main video packet and determines whether or not there is supplementary information on the target. As a result, when the existence of the supplementary information on the target is confirmed, the address of the target menu video channel 11 in the main video header 2 is read, and the address is supplied to the menu header detection circuit 71.
[0029]
The menu header detection circuit 71 separates the menu video data 32 in the target menu video channel 11 from the sub video packet based on the address and supplies it to the sub video reproduction circuit 76. The sub-picture reproducing circuit 76 reproduces the menu picture data 32 and outputs the reproduced signal to the multiplexing circuit 73. As a result, an image obtained by superimposing the target menu on the main image is displayed on the TV 75.
[0030]
A target number is displayed on the target menu, and the user gives a desired target number to the MPU 78 using the control panel 77. The MPU 78 transfers the number to the menu header detection circuit 71. Here, it is assumed that the third target is selected, for example. In this case, the menu header detection circuit 71 reads the address of the menu video channel corresponding to the selected third target based on the header 31 of the target menu video channel 11, and based on this address, the target menu video channel Is supplied to the sub-picture reproduction circuit 76. The sub-picture reproducing circuit 76 reproduces the menu picture data 22 and outputs the reproduced signal to the multiplexing circuit 73. As a result, an image in which an information type menu for selecting the type of supplementary information on the target is superimposed on the main image is displayed on the TV 75.
[0031]
In the information type menu, the number of the supplementary information on the target is displayed, and the number desired by the user is given to the MPU 78 using the control panel 77 among them. The MPU 78 transfers the number to the menu header detection circuit 71. Here, for example, it is assumed that the number 2 is selected. In this case, the menu header detection circuit 71 reads the address of the selected target video channel corresponding to the selected number 2 based on the header 21 of the menu video channel, and based on this address, copies the data of the target video channel of interest. It is supplied to the video reproduction circuit 76. The sub-video reproduction circuit 76 reproduces the target video channel data and outputs the reproduced signal to the multiplexing circuit 73. As a result, an image obtained by superimposing supplementary information on the target on the main image is displayed on the TV 75.
[0032]
As described above, in this embodiment, supplementary information on each target appearing in the main video can be displayed simultaneously on the main video, and the desired target and the type of the supplementary information can be freely selected using the menu. Can be selected.
[0033]
Next, the configuration of a data stream to be reproduced by a reproducing apparatus according to another embodiment of the present invention will be described. FIG. 3 is a diagram showing the configuration of the data stream.
[0034]
The data stream 1 to be reproduced by the reproducing apparatus of the present embodiment includes, in the main video header 2, not only the flag 41 and the address 42 of the target menu video channel, but also the addresses 33, 34, 35 and It records the addresses 23, 24, 25, 26, 27 of the target video channel. Even with such a data configuration, the same reproduction function as described above can be realized.
[0035]
Further, in the configuration of the data stream to be reproduced by the reproducing apparatus of the present embodiment, the total 51 of the data size of the address of each menu video channel and the total of the data size of the address of each target video channel for each target 52 and 53 are added. By recording the data size of each channel address in this way, the arrangement of the address information in the main video header 2 can be recognized by the playback device for each data unit. Therefore, the number of channels in the sub-picture packet can be made variable for each data unit.
[0036]
【The invention's effect】
As described above, according to the present invention, a menu for selecting an arbitrary object from the main image is displayed together with the main image, and supplementary information on the object selected in the menu is displayed together with the main image. Can be displayed. As described above, in the present invention, a new use of a sub-picture can be realized, and a sub-picture can have a selective element using a menu. Further, by arranging the menu hierarchically, it is possible to maintain high operability even if the types and number of supplementary information are increased.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a data stream according to an embodiment of the present invention; FIG. 2 is a block diagram showing a configuration of a reproducing apparatus for reproducing an optical disk on which the data stream of FIG. 1 is recorded; FIG. FIG. 4 is a diagram showing a logical format of recording data on a conventional optical disc. FIG. 5 is a diagram showing a configuration of a DUT header in the logical format of FIG. 4;
1 data stream, 2 main video header, 3 main video data, 4, 5, 6, 7 target video channel, 8, 9, 10 menu video channel, 11 target menu video channel, 21 header, 22: Menu video data, 23, 24, 25: Target video channel address, 31: Header, 32: Menu video data, 33, 34, 35: Menu video channel address, 41: Flag, 42: Target menu video channel Address, 51, 52, 53... Address data size, 70... Main video header detection circuit, 71.

Claims (2)

At least the main video packet and the sub-video packet, which are treated as playback targets in the same period on the same time axis, are unitized, and a plurality of units are continuously recorded, and the sub-video packet is the main video packet. A group of supplementary information on individual objects appearing in the main video and a playback device that plays a recording medium including menu configuration information that configures a menu for selecting an arbitrary target from the main video,
Menu playback means for extracting the menu configuration information from the sub-picture packet, playing back the menu information and displaying the menu together with the main picture,
And a supplementary information reproducing means for extracting supplementary information relating to an object arbitrarily selected from the displayed menu from the sub-picture packet, reproducing the supplementary information and displaying the supplementary information together with the main picture. Recording medium reproducing device. At least the main video packet and the sub-video packet, which are treated as playback targets in the same period on the same time axis, are unitized, and a plurality of units are continuously recorded, and the sub-video packet is the main video packet. A group of supplementary information on individual objects appearing in the main video of the first, first menu configuration information configuring a first menu for selecting an arbitrary object from the main video, and the first In a reproducing apparatus for reproducing a recording medium including a plurality of second menu configuration information constituting a second menu for selecting arbitrary information from information on an object selected by the menu,
First menu reproducing means for extracting the first menu configuration information from the sub-video packet, reproducing the same, and displaying the first menu together with the main video;
The second menu configuration information corresponding to the object arbitrarily selected from the displayed first menu is extracted from the sub-picture packet, and is reproduced to reproduce the second menu information together with the main picture. Second menu playback means for displaying a menu;
Supplementary information reproducing means for extracting supplementary information relating to an object arbitrarily selected from the displayed second menu from the sub-picture packet, reproducing the sub-picture packet, and displaying the supplementary information together with the main picture. A recording medium reproducing apparatus characterized by the above-mentioned.

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