KR0183583B1 - Method for improving an execution speed of video compact disc system - Google Patents

Abstract

The present invention relates to a method for improving execution speed of a video compact disc device, comprising: a tray open function performing a tray open function when a tray open signal is input during a video CD playback operation; and a disk after the tray function performed. A disc TOC read step of reading information in the TioC of the inserted disc when the CD is inserted, and a disc determination step of judging whether the inserted disc is a video compact disc after the disc TOC read step; If the inserted disc after the step is a video compact disc, the prestored TioC read step of reading information stored in the pre-stored TioC, and the prestored TioC information and the currently inserted disc after this prestored TIOC read step. Tio comparing and comparing information in Tio read from If the information of the stored TioC and the information on the inserted disk Tio are consistent as judged by the judgment stage and this TioC comparison judgment stage, the version read step executes the version read immediately and the disk after this version read step. If the version is V2.0, it consists of a track information reading step of reading high resolution still image data in a track, and a version V2.0 function execution step of executing a disc version V2.0 function after the track information reading step. Reads and stores information in TioC of the disc currently being played and compares the information of TioC of the replacement disk and Tioc stored when replacing the disc. Can improve the ease of use and significantly reduce information processing execution time. It is to increase the functionality of the system yiettara.

Description

How to improve execution speed of video compact disc device

1 is a flowchart illustrating a control method of a conventional video compact disc apparatus.

2 is a block diagram illustrating an apparatus to which the present invention is applied,

3 is a structural explanatory diagram illustrating the track structure of the BIO CD,

4 is a flowchart of the present invention.

* Explanation of symbols for main parts of the drawings

1: Video-CD 2: Optical Pickup

3: waveform shaping unit 4: digital signal processing unit

5: micom 6: cdrom decoder

7: MPEG video / audio decoder 8: Display

9: Image signal processor 10: Speaker

11: audio signal processor 12: spindle motor

13: Servo controller 14: keyboard

The present invention relates to a method for improving the execution speed of a video compact disc device. In particular, the present invention reads and stores information in TioC of a disc currently being played, and compares the information of TioC of the replacement disk and TioC stored at the time of replacing the disc. In this way, since the internal disc information is quickly reproduced without performing complicated retrieval procedures due to the disc replacement, the user can not only improve the convenience of use but also significantly reduce the information processing execution time, thereby increasing the functionality of the system. The present invention relates to a method for improving the execution speed of a video compact disc apparatus.

In general, the control method of a video compact disc device is that, first, when a video CD is mounted on a tray and a play signal is set, the microcomputer (not shown) reads a program recorded in the track structure of the video CD at an initial state (S1). (S2) Then, after the track reproducing operation step S2, the process proceeds to the corresponding setting data reproducing step S3 to reproduce the set data. After the corresponding setting data reproducing step S3, for example, the repetition function is set, and then the function setting signal input judging step S4 is performed to determine whether the repetitive function signal is currently input through the keyboard, and the result is repeated. If the function is not set, the process proceeds to the conversation function step (S5) to perform the conversation function with the user according to the user's function setting signal input. If it is determined in step S4 that the repeat function setting signal is inputted, the process proceeds to the track playback determination step S6.

In addition, if the current optical pickup (not shown) is playing the track as a result of the determination in the step S6, the track storage and the continuous play step S7 are performed to memorize the track currently being played and to continue the playback operation. do. After the step S7, the process proceeds to the track playback end determination step S8 to determine whether the currently playing track is finished. If the track playback is not finished, the process returns to the previous step (S7) and repeats the loop. If the track playback is finished, the track repeat playback step is performed. Proceeding to step S9, the process returns to the beginning of the currently finished track and continuously reproduces the information in the track.

However, in the control method of the conventional video compact disc device as described above, when a new disc is replaced, the new version check function and the track information read function must be repeatedly performed each time. Accordingly, the execution time of the disc information is considerably increased. At the time, the complicated procedure as described above must be repeatedly performed, thereby degrading the functionality of the system.

Accordingly, the present invention has been invented to solve the above-mentioned problems, and reads and stores the information in TioC of the disc currently being played, and when the disk is replaced, the information of TioC of the replacement disk and TioC already stored. By making the comparison judgment, the internal disc information can be quickly reproduced without performing the complicated retrieval procedure according to the disc replacement, thereby improving the convenience of use and significantly reducing the information processing execution time, thereby increasing the functionality of the system. It is an object of the present invention to provide a method for improving the execution speed of a video compact disc device.

In order to achieve the above object, the present invention provides a tray open function performing a tray open function when a tray open signal is input during a video CD playback operation, and inserting a disk after the tray open function is performed. A disk TOC read step of reading information contained in TioC of the used disk, a disk judgment step of judging whether a disk inserted after this disk TOC read step is a video compact disk, and a disk inserted after this disk judgment step. Is a video compact disc, the prestored TioC read step of reading information stored in the previously stored TioC, and the prestored TIO information and the TIO read from the currently inserted disk after the prestored TIOC read step. A TioC comparison judgment step of comparing and judging whether information in the store As a result of the judgment during the step, when the information of the stored TioC and the information on the inserted disk TioC match, the version read step (S12) for executing the version read immediately and the disk version after the read version are V2.0 days. The case is characterized in that it comprises a track information reading step of reading high resolution still picture data in a track, and a version V2.0 function step of executing a disc version V2.0 function after this track information reading step.

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

First, the apparatus to which the method of the present invention is applied includes an optical pickup 2 which detects a data signal contained in a video CD as shown in FIG. 2, and the optical pickup 2; A waveform shaping section 3 for waveform shaping the analog data signal detected by the digital signal processing unit, a digital signal processing section 4 for digitally processing the data signal waveform shaping by the waveform shaping section 3, and the digital signal. The microcomputer 5 which controls the signal processing operation of the signal processor 4 and controls the operation of the system as a whole, and the digital data signal inputted by the CD-ROM control signal of the microcomputer 5 in sector units. CD-ROM decoder 6 for separating error check bits, address bits, data data, etc., and MPEG video / audio decoder 7 for separating data data of the CD-ROM decoder 6 into video signal data and audio signal data. Audio Decoder and this MPEG A video signal processor 9 for processing and amplifying video signal data separated by the video / audio decoder 7 and then displaying the same through the display 8 and the MPEG video / audio decoder 7 The audio signal processor 11 for amplifying the low-frequency audio data and outputting the result to the outside through the speaker 10, and the servo controller for controlling the driving operation of the spindle capturer 12 by the servo control signal of the microcomputer 5; It consists of (13).

The microcomputer 5 is connected to a keyboard 14 for inputting a function setting signal of the user.

Here, the spindle motor 12 is driven at a rotational speed at which the optical pickup 2 can easily detect the information recorded on the video CD 1.

In addition, the track of the video-CD 1 has a track structure of the video-CD standard version 2.0 as shown in FIG. 3, and the structure is sequential as absolute time, for example, 04:00 or 04:01. It is listed. Of the information contained in this track structure, for example, the List ID offset table provides an address offset in the play sequence description (PSD) of the list, and the PSD is also previously selected by the user. A collection of control information of a disc that can be reproduced in a programmed order.

Next, a control method applied to the device having the above configuration will be described.

First, when the video CD 1 is mounted on the tray and the play signal is set, the microcomputer 5 recognizes this and drives the spindle motor 12 through the servo controller 13. Then, the video-CD 1 is also rotated, and at the same time, the optical pickup 2 detects a data signal contained in the video-CD 1 and inputs it to the waveform shaping section 3.

The waveform shaping unit 3 then waveform-forms the input analog detection data signal to the digital signal processing unit 4, and the digital signal processing unit 4 converts the input data signal into digital signal processing. And input to the CD-ROM decoder 6.

Therefore, the CD-ROM decoder 6 decodes the control information in the track of the input digital data signal and separates the error check bit, the address bit, the data data, and the like into sectors, for example. Only the data data is transmitted from the MPEG video / audio decoder 7 to the video signal processor 9 and the audio signal processor 11 by separating the audio signal data and the video signal data.

Then, the audio signal data inputted to the audio signal processor 11 is amplified low frequency and then emitted to the outside through the speaker 10. At the same time, the video signal data is also processed by the video signal processor 9 In synchronization with the audio signal, it is displayed as an image signal on the display 8.

However, when the tray open signal or the close signal is set through the keyboard 14 and the video CD is replaced on the deck (not shown), the microcomputer 5 recognizes this and is stored in advance. The contents of the table of contents) and the contents of the newly replaced video CD are compared and judged, and the playback operation is executed according to the result.

That is, the microcomputer 5 proceeds from the initial state S1 to the normal playback operation execution step S2 as shown in FIG. 4 to continue the video CD playback operation currently being played.

After the normal play operation execution step (S2), the process proceeds to the tray open signal judging step (S3) to determine whether the tray open signal is input through the keyboard 14, and as a result, the current tray open signal is not input. If not, return to the previous step (S2) to repeat the loop.

However, if the tray open signal is being input through the keyboard 14 as a result of the determination in the tray open signal determination step S3, the process proceeds to the tray open function execution step S4 to perform a tray open function. That is, the tray protrudes outward.

On the other hand, after the tray opening function performing step (S4) to proceed to the disk insertion determination step (S5) to determine whether the disk insertion function, that is, the disk is replaced and the close signal is input. If it is determined during the tray opening function execution step (S4) that the current disc is not inserted, the loop is repeatedly performed. If the tray open signal is not input, the process returns to the previous step (S2) and repeats the loop.

However, if the tray open signal is being input through the keyboard 14 as a result of the determination during the tray open signal determination step (S3), the process proceeds to the tray open function execution step (S4) to perform a tray open function. That is, the tray protrudes outward.

On the other hand, after the tray opening step of performing the step (S4) proceeds to the disc insertion determination step (S5) to determine whether the disc insertion function, that is, the disc is replaced and the close signal is input.

On the other hand, if the current disk is not inserted as a result of the determination during the tray open function performing step (S4), the loop is repeatedly performed. If the current disk is inserted, the process proceeds to the disk TOC read performing step (S6) of the inserted disk. Information in the TOC, such as minutes of data. Reads information about the second frame. In step S7, it is determined whether the currently inserted disk is a VCD, that is, whether the inserted disk is a VCD, a CD, or a CD-i.

In addition, if the disc currently inserted is not a VCD disc as a result of the disc determination step (S7), the process proceeds to the other disc function operation execution step (S8), and a function corresponding to the disc, for example, a CD or CD-i function. Will run

However, if it is determined during the step S7 that the currently inserted disc is a VCD disc, the process proceeds to the pre-stored TOC reading step S9 to read the information in the pre-stored TOC.

In the TOC comparison determination step (S10), it is determined whether the information of the prestored TOC and the information in the TOC read from the currently inserted disc match each other. If the result is not the same, the procedure is sequentially reproduced (S11). It proceeds and reads the information in the first track and the disc version in sequence as in the normal procedure.

As a result of the determination during the TOC comparison determination step S10, when the information of the pre-stored TOC and the information in the currently inserted disk TOC coincide, the process proceeds to the version reading step S12 and immediately reads the disk version. Then, the process proceeds to the version level determining step (S1) to determine whether the disk version is V2.0. If the result is not V2.0, the process proceeds to the version 1.1 function performing step (S14) and the version V1.1. Functions such as moving picture data are reproduced.

On the other hand, if the version of the disc is V2.0 as a result of the determination during the version level determination step (S13), the track information reading step (S15) is performed to read the information in the track of the disc as shown in FIG. , Version V2.0 data, for example, high resolution still image data is set. The process proceeds to the version 2.0 function execution step (S16) to execute the function of the V2.0 data set by the step S15.

As described above, the present invention reads and stores information in TioC of a disc currently being played, and compares TioC of the replacement disk with TioC of the stored disk when the disc is replaced. Since the internal information of the disc can be quickly reproduced without performing the procedure, the convenience of use can be improved and the information processing execution time can be significantly reduced, thereby increasing the functionality of the system.

Claims (1)

A method for improving the execution speed of a video compact disc device, including a TOS comparison judging step (S10) of comparing the information of previously stored TioCs and information in the TioCs read from the currently inserted disks, to determine whether the information is matched. A playback step (S11) of sequentially reading the information in the track and the disc version when the information of the previously stored TioC and the information in the currently inserted disc TioC do not match as a result of the determination in the comparison determination step (S10); A version reading step (S12) of immediately reading a version of the compact disc when the information of the previously stored TioC and the information in the currently inserted disk TioC are identical as a result of the determination in the TioC comparison determination step (S10); A version level determining step (S13) of determining whether a version of the video compact disc is V2.0 or V1.1 in the version reading step (S12); A version 1.1 function performing step (S14) of performing a version V1.1 function when the version of the video compact disc is not V2.0 after the version level determining step (S13); If the version of the video compact disc is V2.0 after the version level determining step (S13), it reads the information in the track of the disc, sets the data, and performs the version V2.0 function (S15) (S16). Method for improving the running speed of the video compact disc device, characterized in that made.