JP2766238B2 - Video CD player with caption-oriented screen search function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for reproducing a video compact disc (hereinafter, referred to as a caption video CD) including captions (captions), and in particular, enables a screen to be moved around a caption. To a device for making

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional caption video CD reproducing apparatus employs a ROM (not shown) or a ROM.
A CPU (110) for executing a program incorporated in an AM (not shown), a CD driving unit (120),
The caption video CD includes a video / audio decompression and signal processing unit (130) and a caption display unit (140). The caption video CD includes a compressed video signal, a compressed audio signal, and a closed caption (Closed Captio).
n) Along with the signal and closed caption data, synchronization data for synchronizing the screen with the caption data is included in the form of digital data.

[0003] Closed caption data is composed of a caption character string.
During video playback, the video is displayed on the screen at the same time as the video at the time determined by the synchronization data. To perform these functions,
The caption character string and the synchronization data always form a pair, and synchronization between the screen and the caption is performed by the pair of the caption character string and the synchronization data.

[0004] The conventional caption video CD reproducing apparatus configured as described above transfers a digital signal read while driving a video CD by the CD driving section (120) to the CPU (110). The CPU (110) separates the transferred signal into a video and audio compression signal and a closed caption signal, and the video and audio compression signals are decompressed by the video and audio compression and signal processing unit (13).
0) to decompress. The decompressed signals are respectively subjected to signal processing to become analog video signals and analog audio signals.

[0005] Of the above two signals, the video signal is transferred to a video display device, for example, a TV or a computer monitor, the audio signal is transferred to a speaker, and the video and sound are output. Then, a pair of caption character string-synchronous data constituting the closed caption signal is:
CPU (110) according to the time incorporated in the synchronous data
Is transmitted to the caption display unit (140) and decoded, and then displayed on the screen as subtitles overlapping with the video.

When a caption subtitle is viewed while playing back a caption video CD with the conventional caption video CD reproducing apparatus that operates as described above, the display time of the caption subtitle is too short when the user misses or wants to hear the line again. If you want to see it again or search for a particular line, you must rewind or fast forward and wait until the line is displayed. In addition, since there is no function to repeatedly play back only specific lines, the user must use the caption video CD playback device for foreign language learning, and search for caption subtitles and corresponding audio by looking at the video. There is a problem that the caption video CD must be rewound or fast-forwarded until a specific screen appears while chasing, which is difficult to use.

[0007]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems by enabling a user to search for a caption-centered screen, repeat playback, and the like when learning a foreign language. Caption video C that maximizes the learning effect and is convenient for users
D playback device.

[0008]

In order to achieve the above object, the structure of the present invention includes a memory section (5) in addition to the structure of the conventional caption video CD reproducing apparatus shown in FIG.
0), an input unit (70) and an image superimposing unit (60) are added, and the CPU (10) executes a control program of the added portion.

The memory section (50) is a section for storing synchronization data and caption data necessary for synchronizing the caption data and the screen. The input means (70) is a part for accepting the contents input by the user, and the screen superimposing part (60) is a part for processing so that the caption data, which is character data, and the screen are overlapped on the screen.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a caption video C according to the present invention will be described.
The operation and effect of the D playback device will be described in detail with reference to the attached drawings. First, the caption video CD playback device according to the present invention reads all caption data and synchronization data incorporated in the caption video CD into the memory unit (50). In addition to the caption data to be displayed on the current screen, a group of caption strings is superimposed on a predetermined portion of the screen through the screen superimposing unit (60), and then the user inputs a specific caption character string into the input means. If a selection is made using a section (70), for example, a keyboard or a mouse, the screen moves to the screen corresponding to the selected caption character string.

The caption data overlapping the above screen can be switched to non-display by the input means (60) when the user desires. Once hidden,
It has the same function as the conventional caption video CD playback device. The operation of the video CD reproducing apparatus according to the present invention is roughly classified into a caption-oriented screen search function and a repetitive reproduction function. The steps are exemplified as follows, and the following operations are controlled by the CPU (10). ) Is performed by the program executed. Such a program is usually incorporated in ROM or RAM.

A. Caption Oriented Screen Retrieval Function The following describes how the screen moves according to the selection of a specific caption string.

1) A step of storing captions and synchronization data in the memory unit (50) A user inserts a caption video CD containing caption data and synchronization data into the CD drive unit (20) of the video CD playback device. Then, CPU (10)
Controls the CD drive unit (20) to read all the caption data and synchronization data, reconstructs a pair of caption character string-synchronization data, and reconstructs the data into the memory unit (50).
To save.

2) A step of displaying a pair of caption character string-synchronous data on the screen in a superimposed manner. The CPU (10) controls the CD drive section (20) to start reproduction of a video CD. At this time, the CPU (1
0) retrieves a pair of caption character string-synchronous data incorporated in the memory unit from the memory unit (50), and transfers the caption character string to the screen superimposing unit (60);
Make the caption string overlap the currently playing screen.

3) Step of Retrieving Caption Character String Displayed on Screen by User The user can search for and select a caption character string already displayed on the screen through the input means (70). When the user wants to search for a caption string that is not currently displayed on the screen, the CPU
(10) controls the screen superimposing section (60) to cut out the previous caption character string, and again to the memory section (50)
, A new caption character string is retrieved, and is displayed through the screen superimposing unit (60), thereby enabling a continuous search.

4) A step in which the user selects one caption character string and instructs a screen search When the user selects one caption character string and instructs a screen search through the input means (70), the caption character is displayed. Since the corresponding synchronous data always exists in the column, the CPU (10) reads the corresponding synchronous data from the memory unit (50).

5) The CD drive unit (2)
0) The step of repeatedly playing back the CD playback position in step 0) In accordance with the read synchronization data, the CPU (10)
The drive unit (20) is controlled to move the CD reproduction position to a position corresponding to the synchronization data.

When the user selects a caption character string displayed on a specific portion of the screen during the reproduction of the screen according to the above procedure, the image corresponding to the caption character string is reproduced, and the screen and sound are output simultaneously. .

B. Repeat playback function The repeat playback function is the same in steps 1) to 3) of the caption-oriented screen search function described above. Special operation steps for the repeat playback function include:

4) Step in which the user selects a section of the caption character string and instructs repetitive reproduction If the user selects an arbitrary caption character string section through the input means (70) and gives a repetitive reproduction command,
Since the corresponding synchronization data always exists in the caption character string, the CPU (10) reads the corresponding synchronization data from the memory unit (50).

5) Changing the playback position of the CD by the CD drive unit (20) in response to the repeated playback command. According to the read synchronous data, the CPU (10)
The drive unit (20) is controlled to start CD playback from a position corresponding to the start synchronization data, and when the display of the end character string disappears from the screen, the CPU (10) again uses the synchronization data to cause the CD drive unit to perform the playback. Control (20) to move to the position corresponding to the start synchronization data, and start CD playback. This causes repeated playback to continue until the user releases the repeat playback function.

According to the above procedure, if the user repeatedly selects a reproduction section based on a caption character string during screen reproduction, the video and audio in a certain section of the selected caption character string are repeatedly reproduced.

A CD-ROM drive is mounted,
A personal computer (personal computer) to which a video CD playback adapter (ADAPTER) or an image superimposition adapter is connected is another embodiment of the present invention. CD-ROM drive and video CD of the personal computer configured as described above
The reproduction adapter, the screen superimposition adapter, the mouse and the keyboard, the memory and the CPU are respectively a CD driving unit (20) of the caption video CD reproducing apparatus according to the present invention,
It corresponds to the video / audio decompression and signal processing section (30), the screen superimposing section (60), the input section (70), the memory section (50), and the CPU (10). It is embodied as a program and enables the reproduction of caption-oriented video CDs on a personal computer.

[0024]

The caption video CD playback device according to the present invention having the above-described functions can search the screen centering on the caption (caption), so that the user can immediately move to the screen with the caption as desired by the user. It is easy to use. Furthermore, if the device according to the present invention is used for foreign language learning, it is possible to move the screen centering on the subtitles from any screen, easily search for hard-to-hear parts, and freely play back repeatedly, so that the learning effect is improved. Can be increased.

[Brief description of the drawings]

FIG. 1 is a block diagram of a caption video CD reproducing apparatus according to the present invention.

FIG. 2 is a block diagram of a conventional caption video CD playback device.

[Explanation of symbols]

10, 110 CPU 20, 120 CD drive unit 30, 130 Video / audio compression signal release and signal processing unit 40, 140 Caption display unit 50 Memory unit 60 Screen superimposition unit 70 Input means unit

Claims (2)

(57) [Claims] A CPU for executing a program;
In a video CD playback device with a caption (caption) comprising a CD drive unit (20), a video / audio compression signal release / signal processing unit (30) and a caption display unit (40), caption data and synchronization data are read. A memory unit (50) for storing a predetermined section before and after the current playback video
Caption sentence in the memory unit (50) belonging to video
A screen superimposing unit (6) for displaying a character string group on a certain portion of the screen.
0); and searching above the character string displayed on the screen the user, and configure additional input means unit to be able to enter the selected content (70), said CPU (10), said memory Synchronization in unit (50)
Referring to the data, the current playback position is determined by the caption character string selected and input through the input means (70).
A caption video CD reproducing apparatus for moving to a position on a CD having linked video data . 2. The input means (70) includes a function of allowing a user to select and input a repetitive playback section from a character string displayed on a screen. string of repetitive playback section selected input through said input means (70), and, the
Referring to synchronous data corresponding to the character string, caption video CD reproducing apparatus according to claim 1, characterized in that it comprises a function for specifying repeat playback position on the caption video CD.