JPH08163506A - Video playback device - Google Patents

Abstract

(57) [Abstract] [Purpose] Utilizing a sub-picture as a new information notification means independent of the main picture in a moving picture reproducing apparatus. A sub-picture output processing unit of the moving picture reproducing apparatus includes a display area control system 29 for deciding a display area of the sub-picture channel data 33 on the basis of a channel header 34 of each sub-picture channel data 33, and a display area control system 29. Based on the control data 36 of the sub-picture channel data 33, it is determined whether to display a plurality of sub-picture channel data 33 simultaneously, scroll display, superimpose the main picture and each sub-picture channel data 33, and the like. A display timing control system 30,
Each sub-picture channel data 3 in the display format determined by the display area control system 29 and the display timing control system 30.
The output selector 32 outputs the bitmap data 35 of No. 3 to the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving picture reproducing apparatus such as a digital video disk player for reproducing a moving picture from an optical disk on which digital moving picture data is recorded.

[0002]

2. Description of the Related Art In recent years, the progress of digital moving image data transmission technology has been remarkable.

Nowadays, in a digital video disc player as a moving picture reproducing apparatus, it has become possible to reproduce a sub-picture on a main picture (moving picture) for about 2 hours on a compact disk (CD) size optical disk. However, among these, sub-picture data having many channels has not been effectively utilized yet, and improvement of the reproducing apparatus is desired.

Usually, a sub-picture data area in the bit map data format is provided in the digital moving image data, and when the data in the data area is reproduced by the digital video disc player, the bit map data is left as it is. Transferred to the display system.

Further, a method of reducing spatial and time waste of data transfer by providing a control data portion necessary for controlling the display area and timing of the sub-picture in the digital moving image data has been proposed. Has been done. (Japanese Patent Application No. 6-76193) However, in any case, it is premised that the sub-video is superimposed and transferred with the main video, and the sub-video has not been effectively utilized.

It has also been proposed to provide a plurality of sub-picture channels such as 1 to 16 in the sub-picture data block in the digital moving picture data.

(Japanese Patent Application No. Hei 6-74863) However, also in this case, by selecting only one sub-picture channel from the outside, the data of the one sub-picture channel is superimposed on the main picture in the same manner as described above. The method of transferring to a display system for display is adopted, and no attempt has been made to effectively use data of a plurality of sub-picture channels.

[0008]

As described above, in the above-described conventional moving image reproducing apparatus, since the sub-picture data in the digital moving picture data is superimposed on the main-picture data and output to the display system, In the display system, the sub-picture could only be used as a supplementary role for the main picture.

Further, even when a plurality of sub-picture channels are prepared in the digital moving image data, only one of them is used, and the remaining sub-picture data is wasted.

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a moving picture reproducing apparatus capable of effectively utilizing a sub video as a new information notifying means independent of the main video. Has an aim.

[0011]

In order to achieve the above object, a moving picture reproducing apparatus according to claim 1 has at least a main video data block and a sub video data block composed of a plurality of channel data. From a group, in a moving image reproducing apparatus for reproducing the main video and the sub video as a moving image, an input unit for inputting a request for separate display of the main video and the sub video, and a request for separate display for input by the input unit. The main video data and the sub video data are separated from the data unit and output as independent video signals, and a first display area and a second display area. Of the plurality of video signals, the main video is displayed in the first display area and at least one sub-video is displayed in the second display area. It is equipped with and shows means.

According to a second aspect of the present invention, there is provided a moving image reproducing apparatus in which the main image and the sub image are moving images from a data unit group having at least a main image data block and a sub image data block including plural channel data and header information. In the moving picture reproducing apparatus for reproducing as, the input means for inputting the separate display request for the main video and the sub video,
When a separate display request is input by the input unit, a first separation unit that separates a main video data block and a sub video data block from the data unit group, and the sub unit that is separated by the first separation unit. A second separating unit for separating a plurality of sub-picture channel data from the sub-picture data block based on header information of the picture data block; and first and second display areas. Main video data of the main video data block separated by the above is displayed in the first display area, and the plurality of sub video channel data separated by the second separating means is displayed in the second display area. And a display unit for displaying.

A moving picture reproducing apparatus according to a third aspect is the moving picture reproducing apparatus according to the second aspect, wherein a plurality of sub-picture channel data of the sub-picture data block provided for each of the main picture data blocks is provided. The image display device further comprises simultaneous display means for simultaneously displaying in the second display area.

A moving picture reproducing apparatus according to a fourth aspect is the moving picture reproducing apparatus according to the second aspect, wherein a plurality of sub-picture channel data of the sub-picture data block provided for each of the main picture data blocks is provided. A scroll display means for sequentially scroll-displaying in the second display area is further provided.

According to a fifth aspect of the present invention, there is provided a moving image reproducing apparatus in which the main image and the sub-image are moving images from a data unit group having at least a main image data block and a sub-image data block including a plurality of channel data and header information. In the moving picture reproducing apparatus for reproducing as, the input means for inputting the separate display request for the main video and the sub video,
When a separate display request is input by the input unit, a main image and a sub image are separated from the data unit and output as video signals, respectively, and a video signal input from the separation unit. First to display the main video
Display means and second display means which is arranged at a position separated from the first display means and which displays at least one sub-picture based on the video signal inputted from the separation means. There is.

[0016]

According to the present invention, the main video and the sub video are output to the display means as independent video signals in response to a separate display request from the input means during reproduction of a moving image.

Therefore, the first screen is displayed on the display screen of the display means.
And the second display area, each of which can display an independent image, or when a plurality of display units are provided, each of them can display an independent image.

That is, since the sub-picture is output separately from the main picture, one display area can be used as a dedicated display area for a plurality of sub-pictures, and the sub-picture can be used as a new information notifying means.

According to the third aspect of the invention, the plurality of sub-pictures provided for one main picture are simultaneously displayed in the second display area.

That is, since a plurality of sub-pictures are displayed simultaneously, the sub-pictures can be effectively used.

According to the fourth aspect of the invention, the plurality of sub-pictures provided for one main picture are scrolled and displayed in the second display area in synchronization with the reproduction of the main picture.

That is, since a plurality of sub-pictures are scroll-displayed, the sub-pictures can be effectively used.

As a result, the sub-picture can be used as a new information notifying means independent of the main picture.

[0024]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a diagram showing the structure of a data unit (hereinafter referred to as a DUT) according to an embodiment of the present invention.

As shown in the figure, one DUT has a data length corresponding to 0.4 to 0.8 seconds (about 0.5 seconds) of a reproduced image. The DUT includes a DUT header, a sub-picture data block, an audio data block, a main picture data block, and the like. The DUT header has a fixed length, and the sub-picture data block, the audio data block, the main picture data block, and the like have a variable length.

The DUT header includes the position of each data inside each DUT, data for various settings, and the like. The sub-picture data block part is sub-picture data divided into a plurality of sub-picture channels 1, 2, ... I for displaying subtitles and simple animations, and sub-pictures for controlling these sub-picture data. It consists of block headers. The audio data block includes a plurality of audio streams for reproducing voice and an audio block header for controlling these audio streams. The main video data block section includes a video stream for reproducing a video image and a video header for controlling these video streams. Next, the data structure of each of the sub-picture channels 1, 2, ... I will be described with reference to FIG.

As shown in the figure, the sub-picture channel is
It is composed of a channel header, sub-picture bit map data, sub-picture control block and the like. In the channel header, the sub video bitmap data start address, sub video control data start address, sub video display start position,
It stores sub-picture color information, sub-picture contour correction information, sub-picture / main-picture mixture ratio, sub-picture display start timing, and the like. The sub-picture control block is composed of a plurality of control headers 1 to J.
And a control header at the top of these.

Next, with reference to FIG. 3, the structure of the moving picture reproducing apparatus according to the embodiment of the present invention will be described.

As shown in the figure, this moving image reproducing apparatus 1
Is a key input unit 2, a system ROM & RAM unit 3, C
PU unit 4, system processor unit (hereinafter referred to as SYSPRO unit) 5, audio decoder unit 6, main video decoder unit 7, sub video decoder unit 8, DATARAM unit 9, D /
It is composed of an A & reproduction processing unit 10 and the like. The key input unit 2 is used by the user to play, stop, fast forward, fast rewind,
An instruction operation such as with or without subtitle superimposition display is performed. A control program (software) for controlling the operation of this apparatus is stored in the ROM of the system ROM & RAM section 3, and is read by the CPU section 4.

In the case of this moving image reproducing apparatus 1, the CPU section 4 issues a data transmission request to the external data transmission source in response to a key operation from the key input section 2, and the SYSPRO section 5 receives the data. The SYSPRO unit 5 temporarily stores the received data (digital data) in the DATARAM unit 9, and based on the data header added to the digital data, converts the digital data into main video data (compressed moving image data), audio data and It is decomposed into sub-picture data and the like, main picture data is transferred to the main picture decoder section 7, audio data is transferred to the audio decoder section 6, and sub-picture data is transferred to the sub-picture decoder section 8, respectively.

Each of the decoder units 6, 7 and 8 decodes the digital data respectively inputted thereto and outputs them to the D / A & reproduction processing unit 10. The D / A & reproduction processing unit 10
Each digital signal after the decoding process is D / A converted to two analog signals in which the main image and the sub-image are independent, or as one analog signal in which the sub-image is superimposed on the main image, to an external display means such as a display. Output.

Next, the configuration of the sub-picture output processing unit in the D / A & reproduction processing unit 10 will be described with reference to FIG.

A sub-picture output processing unit is incorporated in the D / A & reproduction processing unit 10. As shown in FIG. 4, the sub-picture output processing unit includes a change line number data register 11, a line counter 12, comparators 13 and 14, a change start pixel data read cycle control unit 15, a change start pixel number data register 16, It is composed of a changing pixel number register 17, a dot counter 18, a register reading control unit 19, a sub-picture color register 20, a contour correction color register 21, a contrast ratio register 22 and the like.

The change line number register 11 holds the change line number from the frame control data, and when the count number of the line counter 12 of the display system coincides with this, a coincidence signal is output from the comparator 13. . As a result, the change start pixel data read cycle control unit 15 starts the read start cycle. The change start pixel data reading cycle control unit 15
During the horizontal part ranking period, the pixel number that needs to be changed in the next line is written in the change start pixel number data register 16. The value of the change start pixel number data register 16 is sequentially written into the change pixel number register 17.

The dot counter 18 counts the number of dots on the line, and when the count number matches the value of the changed pixel number register 17, a match signal is output to the register read control unit 19. As a result, the control information regarding the sub-picture color, the contour correction color, and the contrast ratio is read from the change start pixel number data register 16 into the sub-picture color register 20, the contour correction color register 21, and the contrast ratio register 22, respectively.

Hereinafter, the moving image reproducing apparatus will be described for each claim with reference to the drawings.

(Claims 1, 2, and 5) FIGS. 5, 6, and 7 are views showing the moving image display mode of the present invention for each embodiment. FIG. 5 is for Claim 1 and FIG. 6 is for Claim 2. In addition, FIG. 7 corresponds to claim 5.

In FIG. 5, a main video signal and a sub video signal are separately input to the display 23, and two independent video images are displayed on one display screen by a designation operation from the key input unit 2. Functions are provided.

Normally, the display 23 displays only one video image, for example, only the main video image on the display screen. However, when the user performs a designation operation such as subtitle superimposition display from the key input unit 2, Two video display areas in the display screen, that is, a main video display area 24 and a sub video display area 25.
And 2 are arranged side by side, and the input main video is one area 2
In FIG. 4, sub-pictures are displayed side by side in the other area 25.

FIG. 6 is a modification of FIG. 5 in which two different types of information are separately displayed on one screen, and a main video display section 26 dedicated to the main video display and a sub video display section 27 dedicated to the sub video display are provided. In the example in which the main image is displayed on the upper display unit 26 and at least one sub-image is displayed on the lower display unit 27, the display images are separately provided above and below the display screen of the display 23 with a predetermined gap. is there.

FIG. 7 shows a display-separated type display example. The entire display screen of the display 23a is a main video display unit 26 dedicated to the main video display, and a sub video signal is output from the display 23a to the display 23b. This is an example in which the sub-picture display unit 27 dedicated to sub-picture display is provided in 23b, and different information is displayed on each of the displays 23a and 23b, which is used, for example, in a video conference system.

Next, the processing operation of the sub-picture data will be described with reference to FIG.

FIG. 8 is a schematic representation of each component of the sub-picture processing system of FIG. 4, and is a diagram showing the flow of sub-picture data which is reproduced and processed by this sub-picture processing system.

As shown in the figure, the sub-picture output processing system 28 includes two sub-picture display control systems such as a display area control system 29 and a display timing control system 31, a display output system 30, and a key from the outside. It is composed of an output selector 32 and the like for switching the output destination of the sub-picture according to the input.
The data input to the sub-picture output processing system 28 is sub-picture channel data 33, which includes a channel header 34, sub-picture bit map data 35, sub-picture control data 36, and the like.

In this sub-picture processing system 28, when the sub-picture channel data 33 is read, the sub-picture channel data 33 is based on the control information specified in the channel header 34, and the channel header 34 and the sub-picture bit map data. 3 such as 35 and sub-picture control data 36
It is divided into one data. After that, the sub-picture header 34 is controlled by the display area control system 29 for controlling the display area, the sub-picture control data 36 is controlled by the display timing control system 31, and the sub-picture bitmap data 35 is controlled by these display control systems 29, 31. , To the display output system 30.

The display output (sub-picture signal) finally output from the display output system 30 is superimposed on the main picture unless there is a key input from the outside, but the display is shown in FIG.
When there is a key input for notifying that the form is 6 or 7, the output selector 32 outputs the main video signal and the sub video signal individually without superimposing the main video and the sub video.

(Claim 3) FIG. 9 is a diagram showing a configuration for simultaneously displaying a plurality of sub-pictures, and FIG. 10 is a diagram showing a control flow of each unit.

In FIG. 9, 28 is the sub-picture output processing system. Reference numeral 37 denotes a header conversion unit, which creates a header for simultaneous display from the sub-picture block header 44 of the sub-picture data block input to this system.
A control data conversion unit 38 creates control data from the sub-picture block header 44 for simultaneous display. A memory control unit 39 stores a plurality of created sub-picture channel data for simultaneous display (simultaneous display sub-picture data) in the simultaneous display RAM 40.

In this case, as shown in FIG. 10, when the user selects an output switching instruction, for example, simultaneous display of a plurality of sub-picture data (step 101), the header conversion section 37 causes the sub-picture block header to be displayed. 44 is read (step 102), the number of sub-picture channels, the start address of each sub-picture channel, etc. are read from the sub-picture block header 44. Next, the header conversion unit 37 determines the sub-picture channel 45 to the sub-picture channel 4 based on the read data.
The channel header is read from each of the sub-picture channels up to 6 (step 103). Using the read data, the simultaneous display header 41 is created so that the sub-pictures of all sub-picture channels 1 to i can be handled as image data in the same frame (step 104). The created simultaneous display header 41 is transferred to the simultaneous display RAM 40 (step 105) and stored (step 106).

On the other hand, the control data converter 38 reads the sub-picture block header 44 in the same manner as above (step 10).
7), the number of sub-picture channels from the sub-picture block header 44, and sub-picture control data 1 to i of the sub-picture channels 45 to 46 are read (step 10).
8).

Then, using these read data,
The simultaneous display control header 43 is created so that the sub-pictures of all sub-picture channels 1 to i can be handled as image data in the same frame (step 109). The created simultaneous display control header 43 is transferred to the simultaneous display RAM 40 (step 110) and stored (step 111).

The sub-picture bit map data 1 to i of the sub-picture channels 45 to 46 are sequentially stored in the simultaneous display RAM 40 as the simultaneous display bit map data 42 (step 112). The memory control unit 39 performs the operation of writing and reading the simultaneous display header 41, the simultaneous display bitmap data 42, the simultaneous display control data 43 and the like to the simultaneous display RAM 40.

The sub-picture data for simultaneous display thus created is based on the control information specified in the simultaneous display header 41, the simultaneous display header 41, the simultaneous display bitmap data 42, and the simultaneous display control data 43. Is divided into three pieces of data and read by the sub-picture output processing system 28. At this time, the simultaneous display header 41 is displayed in the display area control system 2
9, the simultaneous display control data 43 is transferred to the display timing control system 31, and the simultaneous display bitmap data 42 is transferred to the display output system 30 under the control of these display control systems 29 and 31. The display output (sub video signal) finally output from the display output system 30 is individually output by the output selector 32 without being superimposed on the main video signal. (Claim 4) FIG. 11 is a diagram showing a configuration for scrolling and displaying a plurality of sub-pictures, and FIG. 12 is a diagram showing a control flow of each part.

In FIG. 11, 28 is the sub-picture output processing system, and 47 is a header converter, which creates a header for scroll display from the sub-picture block header 44 of the sub-picture data block input to this system. . A control data conversion unit 48 creates control data for scroll display from the sub-picture block header 44. A memory control unit 49 stores a plurality of created sub-picture channel data for scroll display (simultaneous display sub-picture data) in the scroll display RAM 50. Reference numeral 51 is a data buffer for transferring data in the memory. In the figure, the sub-picture channel 55 is the n-th sub-picture channel. The sub-picture channel 56 is the (n + 1) th sub-picture channel, and is stored in the DUT different from the sub-picture channel 55.
It is reproduced next to the sub-picture channel 55.

In this case, as shown in FIG. 12, when the user operates the key input unit 2 to switch the output to "display sub-pictures sequentially by scrolling" (step 201), the header converter 47 scrolls. The scroll display header 52 at that time is read from the display RAM 50 (step
202), read the next n-th sub-picture channel header 57 from the sub-picture channel 55 (step 203), n
The scroll display header 52 is updated (converted) so that the second sub-picture bit map data 58 is displayed at the bottom of the screen (step 204), and the scroll display RA is performed again.
Transfer to M50 (step 205) and write (step 205)
206).

On the other hand, the control data converter 48 reads the scroll control data 54 at that time from the scroll display RAM 50 (step 207) in the same manner as above, and controls the n-th sub-picture channel 55 from the n-th sub-picture channel 55. The data 59 is read (step 208), the scroll display header 52 is updated (converted) so that the n-th sub-picture bit map data 58 is displayed at the bottom of the screen (step 209), and the scroll display RAM 50 is again displayed. Transfer to (step 210) and write (step 211).

The n-th sub-picture bit map data 58
Will be written at the bottom of the scroll bitmap data 53, but since the bitmap data that was displayed before that has to be shifted to the upper part, the data buffer 51 is used to transfer in memory. To do. That is, the old sub-picture bit map data 58 is taken out from the scroll display RAM 50, temporarily transferred to the data buffer 51, the data is moved up to the upper position except for the oldest bit map data (step 212), and the bit map data is reproduced again. The data is transferred to the scroll display RAM 50 (step 213). Scroll display header 5
2. Scroll display data such as scroll display bitmap data 53 and scroll display control data 54
The operation of writing and reading in the AM 50 is controlled by the memory control 49.

The sub-picture data for scroll display thus created is read by the sub-picture output processing system 28 based on the control information specified in the scroll display header 52. It is divided into three pieces of data, scroll display bitmap data 53 and scroll display control data 54. Thereafter, the scroll display header 52 is sent to the display area control system 29, and the scroll display control data 54 is sent to the display timing control system 31.
The scroll display bitmap data 53 is transferred to the display output system 30 under the control of these display control systems 29 and 31. The display output (sub video signal) finally output from the display output system 30 is individually output by the output selector 32 without being superimposed on the main video signal.

As described above, according to the moving picture reproducing apparatus of the present embodiment, the fact that the display can be composed of two or more video output areas or video output sections is utilized, and one of the video output areas or videos is used. By using the output unit as a display-only area for the sub-video, a plurality of sub-videos added to one main video data can be displayed on another display or area simultaneously with the main video.

As a result, even if there is only one display for the main video at a meeting in a large venue and the individual viewers cannot understand the content on the display, a sub video is provided beside each viewer. By installing a display, it is possible to convey the content of the main video to each viewer by displaying subtitles supplementing the main video on the display.

As described above, it is possible to utilize the sub-picture as a new information notifying means for supplementing the main picture by maximizing the information transmission capacity of the digital transmission system.

[0063]

As described above, according to the present invention, the main video and the sub video are output to the display means as independent video signals in response to a separate display request from the input means during moving image reproduction. When there are first and second display areas in the display screen of the display means and independent video display is possible for each, or when a plurality of display means is provided, independent video display is provided for each. It will be possible.

That is, since the sub-picture is output separately from the main picture, one display area can be used as a dedicated display area for a plurality of sub-pictures, and the sub-picture can be used as a new information notifying means.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a data unit according to an embodiment of the present invention.

2 is a diagram showing a data structure of each sub-picture channel of the data unit of FIG.

FIG. 3 is a block diagram showing a configuration of a moving image reproducing apparatus according to this embodiment.

4 is a diagram showing a configuration of a sub-picture output processing unit of the moving picture reproducing apparatus of FIG.

FIG. 5 is a view showing a display having two image display areas arranged side by side in this embodiment.

FIG. 6 is a view showing a display having two vertically spaced video display units in this embodiment.

FIG. 7 is a diagram showing an example in which a main image is displayed on the display 23a and a sub-image is displayed on the display 23b arranged at a position separated from the display 23a in this embodiment.

FIG. 8 is a diagram schematically showing a configuration of a sub-picture output processing unit in FIG.

FIG. 9 is a diagram showing a configuration for simultaneously displaying a plurality of sub-pictures on the same screen in this embodiment.

10 is a diagram showing a simultaneous display operation with the configuration of FIG.

FIG. 11 is a diagram showing a configuration of a sub-picture output processing unit for sequentially displaying a plurality of sub-pictures in the same screen by a scroll operation in this embodiment.

12 is a diagram showing a scroll display operation with the configuration of FIG. 11. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Moving image reproducing apparatus, 2 ... Key input section, 3 ... System ROM & RAM section, 4 ... CPU, 5 ... SYSPRO section,
6 ... Audio decoder section, 7 ... Main video decoder section, 8
... Sub-picture decoder section, 9 ... DATARAM section, 10 ... D
/ A & reproduction processing section, 23, 23a, 23b ... Display, 24 ... Main video display area, 25 ... Sub video display area, 2
6 ... Main video display unit, 27 ... Sub video display unit, 28 ... Sub video output processing system, 29 ... Display area control system, 30 ... Display output system, 31 ... Display timing control system, 32 ... Output selector, 33 ... Sub Video channel data, 34 ... Channel header, 35 ... Sub video bit map data, 36 ... Sub video control data, 37, 47 ... Header conversion section, 38, 4
8 ... Control data conversion unit, 39, 49 ... Memory control unit, 40 ... Simultaneous display RAM, 41 ... Simultaneous display header,
42 ... Simultaneous display bitmap data, 43 ... Simultaneous display control data, 44 ... Sub-picture block header, 45 ... Sub-picture channel 1, 46 ... Sub-picture channel i, 50 ... Scroll display RAM, 51 ... Data buffer, 52 ... Scroll Display header, 53 ... Scroll bit map data, 54 ... Scroll control data, 55 ... Sub video channel n, 56 ... Sub video channel n + 1, 57 ... Channel header n, 58 ... Sub video bit map data n, 5
9 ... Sub-picture control data.

Claims (5)

[Claims] 1. A moving picture reproducing apparatus for reproducing the main picture and the sub-picture as a moving picture from a data unit group having at least a main picture data block and a sub-picture data block composed of a plurality of channel data. And an input unit for inputting a separate display request for the sub-image and a separate display request by the input unit, separates the main image data and the sub-image data from the data unit, and separates them into independent images. A plurality of video signals input from the separating means, the main video is displayed in the first display area, and the separating means outputs the signal as a signal, and the first and second display areas. 2. A moving image reproducing apparatus, comprising: a display means for displaying at least one sub-picture in the second display area. 2. A moving image reproducing apparatus for reproducing the main image and the sub image as a moving image from a data unit group having at least a main image data block and a sub image data block consisting of a plurality of channel data and header information, Input means for inputting a separate display request for the main video and sub-video, and separating the main video data block and the sub-video data block from the data unit group when the separate display request is input by the input means. A first separating means; and a second separating means for separating a plurality of sub-picture channel data from the sub-picture data block based on the header information of the sub-picture data block separated by the first separating means. , Of the main video data block having the first and second display areas and separated by the first separating means. Display means for displaying video data in the first display area and displaying the plurality of sub-picture channel data separated by the second separation means in the second display area. Video playback device. 3. The moving image reproducing apparatus according to claim 2, wherein a plurality of sub-picture channel data of the sub-picture data block provided for each of the main picture data blocks is provided.
The moving image reproducing apparatus further comprising a simultaneous display means for simultaneously displaying in the second display area. 4. The moving picture reproducing apparatus according to claim 2, wherein a plurality of sub-picture channel data of the sub-picture data block provided for each of the main picture data blocks is provided.
The moving image reproducing apparatus further comprising a scroll display means for sequentially scroll-displaying in the second display area. 5. A moving image reproducing apparatus for reproducing the main image and the sub image as a moving image from a data unit group having at least a main image data block and a sub image data block including a plurality of channel data and header information, Input means for inputting a separate display request for the main video and sub-video; and, when the separate display request is input by the input means, separates the main video and the sub-video from the data unit and outputs the video signals respectively. A first displaying means for displaying a main image based on a video signal inputted from the separating means, and a separating means arranged at a position separated from the first displaying means. A moving image reproducing apparatus comprising: a second display unit for displaying at least one sub-image based on an input image signal.