KR19980061654A - How to Play an Optical Disc Changer System - Google Patents

Abstract

The present invention relates to a method for reproducing an optical disc changer system. (A) When a power off key signal is provided, it is determined whether a predetermined disc is being chucked, and if the disc is not in the disc chucking state, the power is immediately turned off and the disc chucking state is performed. Turning off the power while maintaining the back chucking state; (B) turning on the power and initializing the system when the power on key signal is input; (C) determining whether a given disk is in chucking state; (D) reading and storing TOC (table of contents) data and data for a playback control (PBC) function from the chucked disk if the predetermined disk is in the chucking state, and executing playback if a playback key signal is input; (E) if the predetermined disk is not in the chucking state or (d) is completed, determining the ID for each disk and then chucking each disk sequentially to store TOC data and PBC data; (F) if a play key signal for playing a predetermined disc is input, search for the disc according to the input play key signal, and chucking the disc to perform play.

Therefore, the present invention has an effect that the playback can be performed more quickly on the previously chucked disc in performing the playback in the optical disc changer system.

Description

How to Play an Optical Disc Changer System

The present invention relates to a reproducing method of an optical disc changer system, and more particularly, to a reproducing method of an optical disc changer system capable of executing reproduction for each disc more quickly.

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

Such an optical disc player reproduces an image and / or audio recorded on an optical disc and outputs it through a screen and / or a speaker, and has a higher signal-to-noise ratio than conventional image and / or audio reproducing apparatus, resulting in better image quality and / or Or it can reproduce the signal with sound quality, it does not generate noise due to irregular reproduction and modulation, very low distortion, no ghost and random access, so it is rapidly developed and widely distributed. There is a trend.

In addition, such an optical disk player includes a compact disk player (CDP), a laser disk player (LDP), a compact disk graphic player (CDGP), and a video compact disk player (VCDP: video compact disk player) has been developed and widely used. Also, recently, a digital video disk (DVD) using MPEG-2 moving picture compression technology and a digital video disk player for playing the same have been developed. It can record and play back gigabytes (GB) of data including moving images on a 12cm optical disc such as a CD, and it is also designed to be compatible to play current CDs and VCDs.

In addition, as the performance and functions of such an optical disc player develop, various kinds of data recorded on the optical disc are diversified. In the case of a large amount of data such as a movie, the data corresponding to one movie is recorded on one disc. There was a case where not all of the recordings were possible, and also, inconvenience in use was caused by replacing the disc with a desired disc every time it was used.

Therefore, an optical disc changer system has been developed to alleviate these inconveniences, and such an optical disc changer system can mount a plurality of discs in one disc tray and then selectively play a desired disc sequentially or as needed. Developed.

As described above, the optical disc changer system is provided with a disc tray made for mounting a plurality of discs, which can be equipped with a plurality of discs, and a roulette for rotating the discs. .

In addition, as described above, the roulette constituting the disc tray rotates to perform a predetermined function to change the position in the disc tray of a plurality of discs, each fixedly positioned at a predetermined position of the upper surface of the roulette.

1 is an internal perspective view of a disc tray in an optical disc changer system capable of simultaneously mounting three discs.

As shown in FIG. 1, the disc tray 100 of the optical disc changer system is provided with disc mounting portions 5 and three disc mounting portions 5, and in a vertical direction through a predetermined axis (not shown). The roulette 1 to be combined is provided.

Meanwhile, IDs are assigned to the disk mounting units 5 of the disk tray 100 to distinguish each disk mounting unit 5. For example, in Fig. 1, three disk mounting units 5 are assigned IDs 1, 2, and 3, respectively, which makes it easier to search for one desired disk among the disks mounted in the disk mounting units 5, respectively. 2, there is shown a block diagram of a rotational position control device in the optical disk changer system which searches for the ID of the disk to control the rotational position.

In FIG. 2, the roulette 1 rotates forward or reverse by the driving of the driving unit 210. In addition, the driving of the driving unit 210 is performed by the control of the microcomputer 50.

On the other hand, the ID detection sensor 220 is installed to face the rear of the roulette (1). The ID detection sensor unit 220 generates one low pulse when the disk mounting unit 5 of ID 1 is opposed, and generates two consecutive low pulses when the disk mounting unit 5 of ID 2 is opposed, When the disk mounting portion 5 of the third ID is opposed, three consecutive low pulses are generated and provided to the microcomputer 50.

Accordingly, the microcomputer 50 counts the number of consecutive low pulses provided from the ID detection sensor unit 220 to determine the ID of the disk mounting unit 5 facing the current ID detection sensor unit 220. It is possible to control the rotation position of the.

That is, the driving unit 210 is operated by the control of the microcomputer 50, and the driving unit 210 rotates the roulette 1 in a predetermined direction. As the roulette 1 rotates, the disk mounting portions 5 installed on the upper part of the roulette 1 are opposed to the ID detection sensor portion 220, and the ID detection sensor portion 220 is disposed when the disk mounting portions 5 are opposed to each other. Each time, the number of consecutive low pulses corresponding to the ID of the opposing disk mounting unit 5 is generated and provided to the microcomputer 50, and the microcomputer 50 counts the number of consecutive low pulses to present the current ID detection sensor unit ( By controlling the rotation position by determining the ID of the disk mounting portion 5 located opposite to 220, it is possible to execute various functions such as playing on a desired disk.

On the other hand, the ID detection sensor unit 220, the continuous low pulses indicating the ID of each disk, and the four consecutive low pulses indicating the start / stop code for each successive low pulse Occurs. That is, the start / stop code is inserted and generated between the fixed IDs for the respective disk mounting portions 5 of the rotating roulette 1, to distinguish the end of the fixed ID from the start of the next ID.

3 is a schematic block diagram of a typical optical disk changer system.

As shown in FIG. 3, the optical disk changer system optical pickup unit 10, a radio frequency (RF) signal amplification and servo signal processing unit 20, a motor and motor driver 30, a key input unit 40, a microcomputer ( 50, the digital signal processor 60, the MPEG decoder 70, the audio signal processor 80, the video signal processor 90, the speaker 100, and the screen 110 are configured.

The optical pick-up unit 10 chucks one of the disks mounted on the disk mounting unit 5 of the disk tray 100, performs an optical pickup from the chucked disk, and reads the RF signal accordingly. The RF signal is output to the amplification and servo signal processor 20.

In addition, the motor and the motor driving unit 30 drive the spindle motor (not shown) to rotate the disk and drive the actuator unit 10 so that the pickup unit 10 performs optical pickup to read data recorded on the disk. To output as an RF signal.

The RF signal amplification and servo signal processor 20 amplifies the RF signal provided from the optical pickup unit 10 and provides a servo control signal according to the signal to the motor and the motor driver 30 so that the focus servo and the tracking servo may be To be done.

The digital signal processing unit 60 digitally processes the amplified RF signal provided from the RF signal amplification and servo signal processing unit 20, performs error detection and error correction, and outputs the result to the MPEG decoder 70.

The MPEG decoder 70 decodes an error corrected digital video signal and an audio signal provided from the digital signal processor 60 based on the MPEG compression format and outputs the decoded video signal to the video signal processor 90 and the audio signal processor 80. .

The audio signal processing unit 80 and the video signal processing unit 90 process the decoded audio and video signals provided from the MPEG decoder 70 and output them to the speaker 85 and the screen 95, respectively, and accordingly the speaker 85 And the screen 95 are respectively transmitted and displayed as audio.

On the other hand, as described above, in order for the rotational position of the disc to be controlled by the rotational position control device so that playback can be performed in the optical disc changer system, the disc tray 100 is first opened and the disc is mounted on each disc mounting portion 5. When the disc tray 100 is closed and the disc tray 100 is closed, the microcomputer 50 drives the drive unit 210 to rotate the roulette 1 so that each disc is detected through the ID pulse provided from the ID sensor unit 220. The ID of the mounted disk mounting unit 5 is determined.

Thereafter, the disk mounted in the disk mounting portion 5 is chucked sequentially from the disk having the ID 1, and the focus is executed to determine whether the disk is mounted, and if the disk is mounted, the table of contents (TOC) data and the version 2.0. In the case of video compact discs, the data for the playback control (PBC) function is read, stored in internal memory (not shown) and waits for keystrokes.

After that, when a play key signal for a predetermined disc mounted in the disc mounting unit 5 is input, the roulette 1 is rotated through the drive unit 210 to transfer the disc to be played to the disc chucking position, and then the disc is rotated. It is chucked to execute playback. At this time, when the disc to be played is VCD version 2.0, the playback control mode is unconditionally displayed and the menu screen is displayed through the screen 95 to execute the playback control function.

However, as described above, in the prior art, when the playback is to be performed in the optical disc changer system, first, the disc mounted on the disc is chucked to execute the focusing to determine the presence or absence of the disc. After reading and storing TOC data and PBC data in advance in advance, when a play key signal for a desired disc is input in a key input standby state, the roulette is rotated to search and chuck the disc, and then the prestored TOC data is stored. There is a problem in that it takes a little time because the playback is performed with reference, so that the playback cannot be executed quickly.

Accordingly, the present invention has been made to solve such a problem in the related art, and an object of the present invention is to provide a faster playback in the playback of a desired disc in the optical disk changer system. To provide a method of playing.

According to a preferred embodiment of the present invention for achieving the above object, a disk tray, a roulette installed in the disk tray and rotating in a predetermined direction, and a roulette for changing the position of the disk in the disk tray, and the upper surface of the roulette A plurality of disk mounting units respectively installed in the disk mounting unit, an ID sensor unit for generating an ID pulse for detecting an ID of the disk mounted in each of the disk mounting units according to the rotation of the roulette, and the disk mounting unit. An optical pickup unit for generating a reproduction signal which is read by performing optical pickup after chucking a predetermined disc, a function key for turning off the PBC function for all the discs mounted in the disc loading unit, and a chucked disc PBC off-key and play key for executing play function A reproducing method of an optical disc changer system comprising a key input unit for outputting and a microcomputer for generating a control signal according to a function key signal provided from the key input unit and executing the function, the method comprising: (a) executing a predetermined function; If a power off key signal is provided from the key input unit during operation, the optical pickup unit determines whether the optical pickup unit is chucking a predetermined disc, and immediately turns off the power if not in the disc chucking state. (B) turning off the power in the maintained state; (b) turning on the power and initializing the system when a power-on key signal is input from the key input unit; and (c) determining whether the predetermined disk is in the chucking state. And (d) table of contents (TOC) data and reproduction control (PBC) if a predetermined disc is chucked in the step (c). Reading and storing the data for the recording function and executing the playback when the playback key signal is input; and (e) if the predetermined disk is not in the chucking state or the (d) step is completed, Rotating the roulette to determine the ID for each disk according to the ID pulse provided from the ID sensor unit, and then chucking each disk sequentially to store TOC data and PBC data; Rotating the roulette 1 to search for a disc according to the inputted play key signal when the play key signal for reproducing is input, and chucking the disc to execute play.

1 is a schematic perspective view of a disc tray used in an optical disc changer system

2 is a schematic block diagram of a rotational position control device of the optical disc changer system;

3 is a schematic structural block diagram of an optical disc changer system for implementing the present invention;

4 is a detailed flowchart illustrating a reproducing method of an optical disc changer system according to a preferred embodiment of the present invention.

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

1: Roulette 5: Disk Mount

10: optical pickup section 20: RF signal amplification and servo signal processing section

30: motor and motor drive unit 40: key input unit

50: microcomputer 60: digital signal processing part

70: MPEG decoder 80: Audio signal processor

85: speaker 90: video signal processing unit

95: screen 100: disc tray

210: driving unit 220: ID sensor unit

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

4 is a detailed flowchart illustrating a reproducing method of the optical disc changer system according to the preferred embodiment of the present invention.

Referring to Figures 1, 2 and 3 will be described a method of reproducing the optical disk changer system according to a preferred embodiment of the present invention shown in FIG.

In step S10, when the power-on key signal is input through the key input unit 40 during the predetermined function in the optical disc changer system and that is, in all the states of power-on, the microcomputer 50 in step S20. ) Determines whether a predetermined disk is currently being chucked. If the predetermined disk is not being chucked in step S20, the process proceeds to step S40 to turn off the power of the optical disk changer system and proceeds to step S50. The power is turned off while maintaining the chucking, and the flow proceeds to step S50.

Then, in step S50, the microcomputer 50 determines whether a power-on key signal is input from the key input unit 40. When the power-on key signal is provided in step S50, the flow proceeds to step S60 to turn on the power, and the flow proceeds to step S70 to initialize the system.

Thereafter, in step S80, the microcomputer 50 determines whether the predetermined disk is chucking. If the predetermined disk is chucking in step S80, the microcomputer 50 proceeds to step S90. Proceed to S120).

First, proceeding from step S80 to step S90, in step S90, TOC data and PBC data are read and stored from the chucked disk. When the playback key signal is input in step S100, the disc chucked in step S110 is played. When playback is completed, the process proceeds to step S120.

Subsequently, that is, if the process proceeds from step S80 or step S110 to step S120, in step S120, the microcomputer 50 generates a control signal to the driving unit 210 to rotate the roulette 1, Accordingly, the ID of the disc mounted in each disc mounting unit 5 is determined according to the ID pulse detected and provided from the ID sensor unit 220.

Thereafter, in step S130, each disk is chucked sequentially while the roulette 1 is rotated, and then the TOC data and the PBC data are stored, and when step S130 is completed, the playback on the predetermined disk is performed in step S140. Determine whether a key signal is input. When the playback key signal for the predetermined disk is provided in step S140, the process proceeds to step S150. The microcomputer 50 generates a control signal to the driving unit 210 to rotate the roulette 1 to step S50. After searching for the disk selected by the playback key signal for the predetermined disk inputted in, the disk is chucked, and playback is performed with reference to the read-stored TOC data and PBC data.

Then, when step S150 is completed, the flow returns.

As described above, in the present invention, in the reproducing operation in the optical disc changer system, if a power off key signal is provided in a state where a predetermined disc is chucked, the power is turned off while maintaining the chucking of the disc, After that, when the power is turned on again and the user wants to play the disc in the chucking state, the disc can be quickly played.

Claims (1)

The disk tray 100 and the roulette 1 installed in the disk tray 100 to rotate in a predetermined direction to change the position of the disk in the disk tray and the upper surface of the roulette 1, respectively. A plurality of disk mounting parts 5 for mounting disks, ID sensor parts 220 for generating ID pulses for detecting IDs of disks mounted on the respective disk mounting parts according to rotation of the roulette 1, Optical pickup section 10 for chucking a predetermined disk mounted on the disk mounting section 5, and then performing optical pickup to generate a readout signal, and playback of all disks mounted on the disk mounting section 5; A key input unit 40 having a function key for turning off a control (PBC) function and a play key for executing a PBC off key for a chucked disc and a play function, and providing a function key signal accordingly; (4 In the reproducing method of an optical disc changer system comprising a microcomputer (50) for generating a control signal in accordance with a function key signal provided from &lt; RTI ID = 0.0 &gt; 0) &lt; / RTI &gt; (A) If a power-off key signal is provided from the key input unit 40 while executing a predetermined function, the optical pickup unit 10 determines whether the optical pickup unit 10 is chucking a predetermined disk, and immediately if it is not in the disk chucking state. Turning off the power, and if the disk is in the chucking state, turning off the power while maintaining the chucking state of the disk; (B) turning on power and initializing a system when a power-on key signal is input from the key input unit 40; (C) determining whether a given disk is in chucking state; (D) If a predetermined disk is in the chucking state in the step (c), read and store TOC (table of contents) data and data for a playback control (PBC) function from the chucked disk, and then play back when a playback key signal is input. Executing; (E) When the predetermined disk is not in the chucking state in the step (c) or when the step (d) is completed, the roulette 1 is rotated to correspond to each of the ID pulses provided from the ID sensor unit 220. Determining IDs for the disks and sequentially chucking each disk to store TOC data and PBC data; (F) when a play key signal for playing a predetermined disc is input, rotating the roulette 1 to search for a disc according to the input play key signal, and chucking the disc to perform play; How to Play an Optical Disc Changer System.