KR19980061653A - How to Play an Optical Disc Changer System - Google Patents

Abstract

The present invention relates to a method of reproducing an optical disc changer system, comprising: (a) turning on power and initializing the system, and determining the ID of each disc through an ID pulse; (B) determining whether PBC function off key signals for all the discs are input; (C) when the PBC function off key signal for the disc is input and the play key signal for a predetermined disc is input again, searching and chucking the selected disc, reading and storing TOC (table of contents) data, and then executing playback; Wow; (D) If the PBC function off key signals for all discs are not input, and the play key signal for a given disc is input, search and chuck the selected disc, read and store TOC (table of contents) data, and Determining a version; (E) setting the playback mode to the PBC mode if the version of the disc determined is VCD 2.0 and determining whether a PBC off key signal is input; (F) if the PBC off key signal is input, turn off the PBC mode and then perform normal playback; if the PBC off key signal is not input, play the menu screen according to the PBC function.

Therefore, the present invention has the effect that the reproduction can be performed faster than before in the reproduction 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 disc loading unit 5 is determined, and then each disc is sequentially chucked to provide table of contents (TOC) data and data for a playback control (PBC) function in the case of a video compact disc of version 2.0. Read and store in internal memory (not shown) and wait 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, conventionally, when the playback is to be performed in the optical disc changer system, the TOC data and PBC data for each disc are read in advance and stored in advance, and in the case of a VCD 2.0 disc, Regardless, since the playback mode is set to the PBC mode, there is a problem in that it takes some time to execute the playback of the desired disc, and therefore the playback cannot be performed 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 to rotate in a predetermined direction to change the rotation position of the disk in the disk tray, and the top of the roulette A plurality of disk mounting units each mounted on a surface to mount a disk, an ID sensor unit for generating an ID pulse for detecting an ID of the disk mounted on each of the disk mounting units according to the rotation of the roulette, and the disk mounting unit. An optical pick-up section which generates a playback signal which is read by performing an optical pickup after chucking a predetermined disc, and a function key and chucked to turn off the playback control (PBC) function for all the discs mounted on the disc loading section. PBC off key for the disc and a play key for executing the play function, followed by the function key signals In the reproducing method of an optical disc changer system comprising a key input unit for outputting a and a microcomputer to generate a control signal according to a function key signal provided from the key input unit to execute the function. When the power-on key signal is input, turning on the power and initializing the system, and rotating the roulette to determine the IDs of the discs mounted on the respective disc mounting units through the ID pulses provided from the ID sensor unit; B) determining whether the PBC function off key signals for all the discs mounted on the respective disc loading units are input from the key input unit; and (c) the PBC function off keys for all the discs in step (b). When a signal is input and a playback key signal for a predetermined disk is input again, the roulette is rotated to select a line through the key signal. Conducting playback by searching and chucking the used disc, reading and storing TOC (table of contents) data, and (d) in step (b), the PBC function off key signals for all the discs are not input, Rotating the roulette when a reproduction key signal for a predetermined disc is input, searching and chucking the selected disc through the key signal, reading and storing TOC (table of contents) data, and determining a version of the disc; E) if the disc version determined in step (d) is VCD 2.0, setting the playback mode to PBC mode and determining whether a PBC off key signal is input; and (f) turning off PBC in step (e) above; When the key signal is input, the PBC mode is turned off to perform normal playback, and when the PBC off key signal is not input, the menu screen according to the PBC function is reproduced.

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.

When the power-on key signal is input through the key input unit 40 in step S10, the microcomputer 50 turns on the power of the optical disc changer system, and initializes the system in step S20.

Then, in step S30, the microcomputer 50 generates a control signal to the driving unit 210 to rotate the roulette 1, and accordingly each disk mounting unit in accordance with the ID pulse detected and provided from the ID sensor unit 220 The ID of the disc mounted in (5) is discriminated.

Then, in step S40, the microcomputer 50 determines from the key input unit 40 whether a function key signal for turning off the PBC function of all the disks mounted on the disk mounting unit 5 is input. In step S40, if a function key signal for turning off the PBC functions of all the disks is input, the process proceeds to step S50, and if not, the process proceeds to step S90.

First, when an input of a function key signal for turning off the PBC functions of all the disks is input in step S40 and the process proceeds to step S50, the microcomputer 50 turns off the PBC functions for all the disks, It is judged whether or not a reproduction key signal for a predetermined disc is loaded. When the playback key signal for the predetermined disk is input in step S50, the process proceeds to step S60. The microcomputer 50 generates a control signal to the driving unit 210 to rotate the roulette 1, and in step S50. After the disc selected by the reproduction key signal for the given disc is searched, the disc is chucked through the optical pickup section 10, and the TOC data is read and stored. Thereafter, in step S70, the microcomputer 50 generates a control signal to play the chucked disc. Thereafter, when step S70 is completed, in step S80 it is determined whether a reproduction key signal for a predetermined other disc is input, and if so, the flow returns to step S60 to repeat the flow, and if not, the flow ends.

On the other hand, if the input of the function key signal for turning off the PBC functions of all the disks in step S40 is not input, the process proceeds to step S90 as described above, and in step S90 as in step S50, It is determined whether a play key signal for the disc is input, in which case the PBC function for all the discs is not turned off.

Then, when the playback key signal for the predetermined disk is input in step 9S90, in step S100, the microcomputer 50 generates a control signal to the driving unit 210 to rotate the roulette 1 in step S90. After the disc selected by the reproduction key signal for the predetermined disc is searched, the disc is chucked through the optical pickup unit 10, the TOC data is read and stored, and the version of the disc is determined.

Thereafter, in step S110, it is determined whether the version of the disc determined in step 100 is VCD 2.0, in which case, if VCD 2.0 proceeds to step S120, otherwise, for example, if it is VCD 1.1, step S70. Proceed to

When the process proceeds from step S110 to step S120, the playback mode is set to the PBC mode in step S120. In step S130, the microcomputer 50 inputs the PBC off key signal from the key input unit 40. Determine if

Thereafter, when the PBC off key signal is input in step S130, the flow advances to step S140 to turn off the PBC mode to perform normal playback, and when the PBC off key signal is not input, proceed to step S150 to enter the PBC function. The menu screen is played back, and PBC playback is executed according to the key signal input later. Then, step S140 and step S150 proceed to step S160.

In step S160, as in step S80, it is determined whether the Jessen key signal for another predetermined disk is input. At this time, if it is not input, the flow is terminated, and if so, the flow returns to step S100 to resume the flow. Perform.

As described above, the present invention is different from the conventional playback method in which the playback is performed on the selected disk after reading out and storing TOC data for all the loaded disks in advance in performing playback in the optical disk changer system. When the TOC data is read and the playback is performed, and the PBC playback is not desired, the PBC function for all the discs is turned off at once, so that the playback can be performed more quickly in the desired playback mode.

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) When the power-on key signal is input from the key input unit 40, the power is turned on, the system is initialized, and the roulette 1 is rotated to transmit the ID pulses provided from the ID sensor unit 220, respectively. Determining an ID of a disc mounted in the disc loading unit 5 of the disc; (B) determining whether the PBC function off key signals for all the discs mounted in the respective disc loading units 5 are inputted from the key input unit 40; (C) If the PBC function off key signals for all the discs are input in step (b) and a play key signal for a predetermined disc is input again, the roulette 1 is rotated to select the disc selected through the key signal. Searching, chucking, reading and storing table of contents (TOC) data, and executing playback; (D) If the PBC function off key signals for all the discs are not input in step (b) and a playback key signal for a predetermined disc is input, the roulette 1 is rotated to select the disc selected through the key signal. Searching and chucking, reading and storing table of contents (TOC) data, and determining a version of the disk; (E) setting the playback mode to the PBC mode if the version of the disc determined in step (d) is VCD 2.0 and determining whether a PBC off key signal is input; (F) if the PBC off key signal is input in step (e), turning off the PBC mode and executing normal playback; if the PBC off key signal is not input, reproducing the menu screen according to the PBC function. How to play a disc changer system.