KR19980079038A - How to Play an Optical Disc Changer System - Google Patents

Abstract

The present invention provides a reproducing method of an optical disc changer system in which a plurality of discs are mounted to select and play a predetermined disc, wherein each of the plurality of discs sequentially reproduces and stores programs recorded in a predetermined track section. First step; A second step of sequentially outputting the stored programs when a disc introduction signal is input to the optical disc changer system; If a playback signal is input to the optical disc changer system while the stored programs are output, the disc is searched for in the currently output program among the pre-stored programs and the corresponding disc is played, but the play is performed after the preset track section. It includes a third step.

Therefore, while the present invention introduces the contents contained in each disc for a predetermined time, the viewer can play the disc if the viewer wants to play the disc during the introduction.

Description

How to Play an Optical Disc Changer System

The present invention relates to a method of reproducing an optical disc changer system equipped with a plurality of discs. In particular, the contents contained in each disc are introduced for a predetermined time, and the optical disc changer for reproducing the disc when the viewer wants to play the disc during the introduction. It relates to a regeneration method of the system.

With the development of audio and video media, optical disc players have been developed for recording and reproducing video and audio data on semi-permanent optical discs.

Such an optical disc player reproduces video and audio recorded on an optical disc and outputs it through a screen and a speaker, and has a higher signal-to-noise ratio than conventional video and audio playback devices, thereby reproducing a signal with better image quality and sound quality, and irregularities. It is rapidly developing due to various advantages such as no noise due to reproduction and modulation, very little distortion, no ghost, and random access.

In addition, such an optical disk player has been developed and widely used, such as a compact disk player (CDP), a laser disk player (Laser Disk Player), a compact disk graphic player (CDGP) and a video compact disk player Recently, a digital video disc (DVD) using MPEG-2 moving picture compression technology and a digital video disc player for reproducing the same have been developed, which includes several gigabytes of moving pictures in a 12 cm optical disc such as a current CD. It can record and play back data of giga byte (GB), and it is made to be compatible to play current compact disc and video compact disc.

On the other hand, as the performance and function of the optical disc player develops, the types of programs recorded on the optical disc are also diversified. In the case of a large amount of data such as movies, all programs corresponding to one movie can be recorded on one disc. In some cases, the inconvenience of having to replace or mount a disc every time it occurred.

Therefore, in order to solve this inconvenience, an optical disc changer system capable of mounting a plurality of discs at one time has been developed. The operation of the optical disc changer system will be briefly described as follows. The optical disk changer system is provided with a tray roulette for mounting a plurality of disks, the tray roulette is provided with a plurality of trays for mounting the disk.

Therefore, the user can mount a plurality of disks in each tray of the tray roulette, and after mounting the plurality of disks, for example, disk A, disk B, disk C, in tray roulette, the desired disk, for example disk B, If you select, the selected disc (disc B) is played.

On the other hand, if the user selects the disc C during the play of the disc B or after the disc B is finished, the optical disc changer system stops the disc B and then rotates the tray roulette so that the disc C reaches the chucking position. , Plays the disc C.

As described above, in the optical disk changer system, a plurality of disks are mounted and then played back. On the other hand, it is difficult for a user to store program contents recorded on the mounted disks because there are several mounted disks.

Therefore, in the optical disk changer system in which a plurality of disks are mounted in the tray roulette, in order to check the programs of the mounted disks, the user may play the mounted disks one by one or open the trail roulette to the user to view the programs recorded on each disk. I had to go through the process myself.

As described above, the conventional optical disc changer system has a problem in that it has to take the hassle of selecting a disc to be viewed based on manual operation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and the contents contained in each disc are introduced for a predetermined time, and during the introduction, if the viewer wants to play the disc, the disc is played back. The purpose is to provide a method.

In order to achieve the above object, the present invention provides a reproducing method of an optical disc changer system in which a plurality of discs are mounted to select and play a predetermined disc, and are recorded in a predetermined track section for each of the plurality of discs. A first step of sequentially reproducing and storing the respective programs; A second step of sequentially outputting the stored programs when a disc introduction signal is input to the optical disc changer system; If a playback signal is input to the optical disc changer system while the stored programs are output, the disc is searched for in the currently output program among the pre-stored programs and the corresponding disc is played, but the play is performed after the preset track section. It includes a third step.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

1 is an overall block diagram of an optical disc changer system for carrying out the reproduction method of the present invention;

2 is a detailed flowchart showing a playback method according to a preferred embodiment of the present invention.

Explanation of symbols for the main parts of the drawings

10: key input unit 20: control unit

30: optical pickup unit 40: RF signal amplification unit

50: digital signal processing unit 60: servo signal processing unit

70: tray roulette drive unit 80: MPEG decoder

90: video signal processing unit 100: monitor

110: audio signal processing unit 120: speaker

130: storage unit 140: first sensor unit

150: second sensor unit R: tray roulette

T: Tray D: Disc

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

1 is an overall block diagram of an optical disc changer system for carrying out a playback method according to the present invention.

Referring to FIG. 1, the optical disk changer system includes a tray roulette R, a key input unit 10, a control unit 20, an optical pickup unit 30, an RF signal amplifying unit 40, a digital signal processing unit 50, and a servo. The signal processor 60, the tray roulette driver 70, the MPEG decoder 80, the video signal processor 90, the monitor 100, the audio signal processor 110, the speaker 120, the storage 130, The first sensor unit 140 and the second sensor unit 150 is included.

Tray roulette (R) is provided with a plurality of trays (T) for mounting the disks, the tray roulette (R) is rotated by a tray roulette drive unit 70 to be described later.

The tray roulette drive unit 70 rotates the tray roulette R to move the selected disk D to the chucking position when the predetermined disk D is selected, and when the selected disk D reaches the chucking position, the tray roulette ( Stop the rotation of R).

The first sensor unit 140 detects that the tray roulette R is opened to the outside from the optical disc changer system or inserted into the optical disc changer system from the outside.

When the tray roulette R is inserted into the optical disk changer system, the second sensor unit 150 detects whether the disks are mounted in the trays T.

The optical pickup unit 30 performs an optical pickup from the selected disk D when the disk is in the chucking position and outputs an RF signal (video, audio or text) read accordingly.

The RF signal amplifier 40 amplifies the RF signal provided from the optical pickup unit 30 and provides it to the digital signal processor 50.

The servo signal processor 60 detects focus and tracking error signals from the amplified RF signal and performs focusing servo and tracking servo. In addition, the servo signal processing unit 60 has a feed servo function that, when the viewer selects a specific track or a specific position on the disc, transfers the optical pickup unit 30 directly to the corresponding position so that playback is performed at the corresponding position. .

Meanwhile, the digital signal processing unit 50 performs digital signal processing on the amplified RF signal provided from the RF signal amplifying unit 40, performs error detection and error correction, and outputs the result to the MPEG decoder 80.

The MPEG decoder 80 separates an error corrected bit stream type digital signal provided from the digital signal processor 50 into a video signal and an audio signal, and the video signal and the audio signal are based on the MPEG compression format. After decoding, the video signal is output to the video signal processor 90 and the audio signal processor 110, respectively.

The video signal processor 90 processes the decoded video signal provided from the MPEG decoder 80 and outputs it to the monitor 100 for display.

The audio signal processor 110 converts the decoded audio signal provided from the MPEG decoder 80 into an analog signal and outputs the analog signal to the speaker 120.

On the other hand, the key input unit 10 provides a function key signal to perform a predetermined function in the optical disk changer system, the control unit 20 is a control signal according to the key signal provided from the key input unit 10, each component To control the function so that the predetermined function can be executed.

The storage unit 130 provides a video signal and an audio signal for playing a program recorded in a predetermined track section of each disc D, for example, 10 seconds from the start of the first track under the control of the controller 20. Receive the specified address and save it. In addition, the storage unit 130 outputs a program recorded in a predetermined track section of each of the discs D stored at the request of the controller 20.

Fig. 2 shows a detailed flowchart showing a reproduction method according to a preferred embodiment of the present invention, and the reproduction method of Fig. 2 is performed using the optical disc changer system of Fig. 1 described above. Therefore, the following description will be given with reference to FIGS. 1 and 2.

First, the first sensor unit 140 detects that the tray roulette R is exposed or inserted to the outside in the optical disk changer system (S1). The first sensor unit 140 provides a high signal to the controller 20 when the tray roulette is exposed to the outside of the optical disk changer system, and outputs a low signal when the tray roulette R is inserted into the optical disk changer system. To provide. When the tray roulette T is exposed to the outside of the optical disk changer system, the user can mount the disk D to be viewed in the predetermined tray T of the tray roulette R.

Next, when the controller 20 is provided with a low signal from the first sensor 140, the controller 20 controls the second sensor 150 to control each tray T of the tray roulette R. It detects whether the disks D are mounted. The second detector 140 provides a high signal to the controller D when the disks are mounted in the trays T, and provides a low signal to the controller 20 when the disks are not mounted in the trays T. (S2).

Subsequently, when the high signal is provided from the second sensing unit 150, the control unit 20 sequentially plays the disks D mounted in the trays T. For example, if A disk is installed in tray 1 and B disk is installed in tray 2, the control unit 20 controls the first track of the program-first track recorded in the preset track section starting from disk A. Play for 10 seconds from the time point. First, the control unit 20 controls the tray roulette drive unit 70 to reach the A disk in the chucking position. The tray roulette drive unit 70 rotates the tray roulette R to reach the chucking position. Thereafter, the control unit 20 optically picks up the video and audio signals of the program recorded in the TOC and the predetermined track section recorded on the A disc through the optical pickup unit 30 and outputs the RF and signal. The RF signal is amplified by the RF signal amplifier 40 based on a predetermined degree of amplification and then transmitted to the MPEG decoder 80 via the digital signal processor 50. The MPEG decoder 80 decodes a video and audio signal of a program recorded in a predetermined track section processed digitally and transmits the decoded video and audio signals to the storage 130. The storage unit 130 stores video and audio signals of a program recorded in a decoded predetermined track section provided by the MPEG decoder 80 by giving a predetermined address. In addition, other disks other than the A disk perform the same process as the A disk, and the programs stored in each TOC and a predetermined track section are sequentially stored in the storage 130 (S3).

When the TOC of the discs mounted in the trays T and the program recorded in the predetermined track section are stored in the storage unit 130, is the controller 20 inputting a disc introduction signal from the key input unit 10? Determine (S4).

When the disk introduction signal is provided to the control unit 20 in step S4, the control unit 20 controls the storage unit 130 to sequentially read out the programs recorded in the preset track sections of the respective stored disks D in the order of storing. do. First, a program recorded in a predetermined track section read from the disc A is transmitted to the video signal processor 90 and the audio signal processor 110 via the MPEG decoder 80 and then through the monitor 100 and the speaker 120. Video and audio are output. When playback of the program recorded in the predetermined track section of the A disk is finished, the control unit 20 plays back the program recorded in the predetermined track section of the other disks stored in the storage unit 130 other than the program of the A disk based on the stored order. (S5).

In this case, when the play signal for selecting the disc to be watched is input through the key input unit 10 (S6), the control unit 20 controls the disc D corresponding to the program being played when the play signal is input. ) Is detected (S7).

Finally, when the disc D to be played is detected, the controller 20 controls the tray roulette drive unit 10 so that the disc D to be viewed reaches the chucking position. The tray roulette driver 70 rotates the tray roulette R so that the disc D to be viewed reaches the chucking position. When the disc D to be viewed reaches the chucking position, the controller 20 controls the servo signal processor 60 to cause the optical pickup unit 30 to jump to a point after the above-described preset track section. The servo signal processor 60 directly transfers the optical pickup unit 30 to a point after the preset track section. Then, when playback of the program recorded in the predetermined track section of the disc D to be watched is finished, the controller 20 controls the optical pickup unit 30 to perform the optical pickup after the preset track section. Then, the disc to be watched is continuously played back without interruption (S8).

As described above, the playback method according to the present invention introduces the contents contained in each disc for a predetermined time, and if the viewer wants to play a predetermined disc during the introduction, the user can play the disc so that the user's convenience can be achieved. have.

While the invention has been shown and described with respect to certain preferred embodiments, it will be apparent to those skilled in the art that various modifications, changes and omissions can be made without departing from the spirit and scope of the invention.

Claims (1)

In the playback method of the optical disk changer system that mounts a plurality of disks to select and play a predetermined disk to watch, A first step of sequentially reproducing and storing programs recorded in a predetermined track section for each of the plurality of disks; A second step of sequentially outputting the stored programs when a disc introduction signal is input to the optical disc changer system; If a playback signal is input to the optical disc changer system while the stored programs are output, the disc is searched for in the currently output program among the pre-stored programs and the corresponding disc is played, but the play is performed after the preset track section. And a third step of playing the optical disc changer system.