KR20000028474A - Searching and reproducing method for video cd system - Google Patents

Abstract

PURPOSE: A searching and reproducing method for video CD system is provided to quickly and conveniently perform a searching and a reproduction by storing a program with a specific section to a memory and reproducing the program stored in the memory when needing a production to the corresponding section. CONSTITUTION: A control unit stores TOC information provided from a video CD player to a first memory when a disk is mounted on a video CD system(S1,S2). The control unit controls a reproduction of the video CD player based on TOC information stored in the first memory when a reproducing key is provided(S3,S4). The control unit searches a second memory to identify as to whether a program is stored in the second memory when a storing start key is inputted(S5,S6). The control unit resets the second memory when the program is stored in the second memory, and receives a program data from the video CD player to stored the received program data to the second memory(S7,S8). The control unit compares a total storing capacity of the second memory with an amount of current stored data and checks an input of a storing end key(S9,S10). The control unit stops a storing operation when the storing end key is inputted(S11).

Description

How to Play Playback on Video CD System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a search and playback method for storing a program of a specific section in a memory in a video CD (Compact Disk) system.

In general, a video CD system is a non-contact reproduction of video / audio data recorded by MPEG-1 recording method by a laser, it provides a resolution of 325 * 240, such as video tape (VHS), the screen format is 30 frames per second Level. Such video CDs can be divided into learning video CDs, movie video CDs, and karaoke video CDs according to their functions and uses.

Referring to FIG. 1, a video CD typically consists of a program area, a read in area and a read out area.

The program area is located between the innermost and outermost parts of the video CD. The program area contains one or more programs in track units.

The lead-in area is located on the innermost periphery of the video CD, and control information necessary for reproducing each program recorded in the program area is created and recorded in a TOC (Table Of Content). The lead-out area is located at the outermost periphery of the video CD and contains information related to the end of the program area.

In such a video CD, when the user selects a predetermined program, the video CD player reads the TOC stored in the lead-in area of the video CD, and then detects the start time of the selected program from the TOC. Then, based on the start time of the selected program, the start position on the disk containing the corresponding program is searched. When the search is completed, the program is read out from the corresponding position and program playback is executed.

However, in the TOC of the video CD, as described above, there is only information about start time and end time for each track, and no information about a specific position in one track. Therefore, in the conventional case, even if only information on a specific section is needed in one program, it is difficult to selectively reproduce only the corresponding section.

For example, learning video CDs can be divided into a number of items for each subject. In the case of video CDs for learning English subjects, they will be divided into a number of items such as reading, writing and grammar.

By the way, if the video CD for learning English is formed of tracks in units of items, that is, if one track is assigned to reading lessons, one track is assigned to writing lessons, and one track is assigned to learning grammar, learners Has no choice but to select by item for learning. However, in learning in reality, there is a part that cannot be easily understood by the learner within a single item, and it is necessary to repeatedly learn the corresponding part in order to learn it properly.

Nevertheless, since the TOC of a Video CD contains only information about the start time and the end time for each track, there is no information about a specific position within a track, so if the user wants to reproduce the information for a particular section, After the scanning process from the start point of the track including the corresponding section to the desired section, the scan search method is applied so that normal playback starts when the start point of the section is reached.

Accordingly, the present invention provides a search and playback method that can perform a faster and simpler search and playback by storing a program of a specific section desired by a user in a memory and then playing a program stored in the memory when a playback of the section is required. Has its purpose.

The present invention for achieving the above object is to reproduce a program recorded on a disc consisting of one or more tracks, the method of searching and reproducing a video CD system having a memory comprising the steps of: reproducing a program recorded on the disc. Wow; If a specific section is designated during the playback, storing the program in the section in the memory; And when a search play key signal is input to the video CD system, reproducing a program stored in the memory.

1 is a general structural diagram of a video CD;

2 is a configuration diagram of a video CD system for performing a search and playback method of the present invention;

3 is a detailed flowchart of a search reproduction method according to an embodiment of the present invention;

<Description of the code | symbol about the principal part of drawing>

100: disc 200: video CD player

300: control unit 400: first memory

500: second memory 600: key input unit

700: OSD unit

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 shows a video CD system for performing the seek reproduction method of the present invention. In FIG. 2, the video CD system includes a disk 100, a video CD player 200, a controller 300, a first memory 400, a second memory 500, a key input unit 600, and an OSD (On Screen Display). The unit 700 is configured.

As illustrated in FIG. 1, the disc 100 includes a lead-in area, a program area, and a lead-out area, in which one or more programs are stored. Each program also includes video data, audio data, and sub data.

The video CD player 200 reads out data stored on the disc 100, corrects an error, and provides control information such as TOC information or sub data to the control unit 300, and the video / audio data on the program area is MPEG decoding process to output.

TOC information is stored in the first memory 400. The second memory 500 stores a program for a specific section of the disk 100. The key input unit 600 provides various user key signals to the control unit 300, and the OSD unit 600 displays various operation states of the video CD player 200 on an OSD screen, and is controlled by the control unit 300. Receive.

The controller 300 stores the TOC information provided from the video CD player 200 in the first memory 400, and when a key signal is input from the key input unit 600, based on the TOC stored in the first memory 400. The video CD player 200 is controlled to perform an operation corresponding to the key signal. In particular, when the memory start key signal and the memory stop key are input from the key input unit 600 during the playback operation of the video CD player 200, the controller 300 outputs a program for a specific section on the disc 100 to the video CD player. When received from the 200, and stored in the second memory 500, and after the search play key signal is input from the key input unit 600, the program stored in the second memory 500 is stored in the video CD player 200. Provided by, to control the program to play.

3 is a detailed flowchart illustrating a search reproduction method according to an embodiment of the present invention. The search reproduction method of FIG. 3 is performed using the video CD system of FIG. Therefore, the search and reproducing method of the present invention will be described below with reference to FIGS. 2 and 3.

When the disc 100 is mounted in the video CD system (S1), the video CD player 200 reads out the TOC recorded in the lead-in area of the disc 100, corrects the error, and provides the error correction to the controller 300. The controller 300 stores the TOC information provided from the video CD player 200 in the first memory 400 and waits (S2).

When the user provides the playback key signal to the control unit 300 using the key input unit 600 (S3), the control unit 300 based on the TOC stored in the first memory 400, the video CD player 200 The playback is controlled (S4). Here, the playback key signal may be a key signal for designating a program recorded in the front track among a plurality of programs recorded in the program area of the disk 100 or a key signal for designating a specific program.

The video CD player 200 is switched to the normal playback mode under the control of the control unit 300, and then reads the designated program among the programs recorded on the disc 100. The video CD player 200 corrects the read program and provides the control unit 300 with sub data included in the program. In addition, the video CD player 200 MPEG-decodes the error-corrected video / audio data, decompresses the video / audio data, and then outputs the audio data through the audio line L1, and the video data is displayed in the OSD unit ( To 700). The video data via the OSD unit 700 is then converted into an NTSC analog video signal and transmitted to the display side.

During the normal play mode operation, when the user inputs the memory start key signal to the controller 300 using the key input unit 600 (S5), the controller 300 searches for the second memory 500, and 2 Check whether the program is stored in the memory 500 (S6). As a result of the check, if the program is stored in the second memory 500, after resetting it (S7), the program data is received from the video CD player 200 and stored in the second memory 500 (S8).

Therefore, the program data read from the disc 100 starts to be stored in the second memory 500 at the time when the memory start key signal is input to the controller 300.

In this case, the program data stored in the second memory 500 may be error corrected data, but the data compressed by the MPEG-1 method is stored as it is.

The controller 300 compares the total storage capacity of the second memory 500 with the amount of data currently stored while the predetermined program data is accumulated / stored in the second memory 500 (S9). The input of the signal is checked (S10). When the memory end key signal is input from the key input unit 600 when the data amount of the program stored in the second memory 500 is smaller than the total storage capacity, the control unit 300 stops the storage operation (S11).

On the other hand, if the storage end key signal is not input from the key input unit 600 until the data amount of the program stored in the second memory 500 is equal to the total storage capacity of the second memory 500, the controller 300 After stopping the storage operation (S12), the OSD unit 700 is controlled to inform the user of such a state (S13).

The OSD unit 700 causes the OSD screen to display a character indicating that the total memory capacity of the second memory 500 can no longer be stored.

When the program for the specific section on the disk 100 is all stored in the second memory 500 by the above-described process, the search play key signal from the key input unit 600 is input to the control unit 300. In operation S14, the controller 300 searches the second memory 500 to determine whether program data is stored in the second memory 500 (S15).

If the program data is not stored in the second memory 500, the controller 300 controls the OSD unit 700 to notify the user of such a state (S16). The OSD unit 700 displays a text on the OSD screen indicating that a program is not stored in the second memory 500.

However, if program data is stored in the second memory 500, the program stored in the second memory 500 is provided to the video CD player 200, and the program is controlled to be played (S17).

When the control signal is input from the control unit 300, the video CD player 200 stops the read operation to the disc 100 and decodes the program data provided from the control unit 300 based on the MPEG-1 decoding method. Process. Therefore, after the video / audio data provided from the second memory 500 is decompressed, the audio data is output through the audio line L1 and the video data is output to the OSD unit 700.

After all of the program data stored in the second memory 500 is reproduced (S18), the control unit 300 stops the playback operation of the video CD player 200 (S19), and accordingly stored in a specific section. Search playback for the program is completed.

As described above, the present invention stores a program of a specific section desired by a user in a memory, and then plays a program stored in the memory when the playback of the corresponding section is required, thereby making it possible to perform faster and simpler search and playback. have.

Claims (1)

In a search and playback method of a video CD system having a memory by playing a program recorded on a disc of one or more tracks: (A) playing a program recorded on the disc; (B) retrieving the memory if a specific section is designated during the playback, resetting the stored program if the program is stored in the memory, and storing the program of the specific section in the memory; ; (C) When a search play key signal is inputted to the video CD system, it is checked whether a program is stored in the memory, and if a program is stored in the memory, the program is played. Seek and play method of Video CD system including displaying the same situation with OSD.