KR19980058832A - Memory playback method of optical disc player - Google Patents

Abstract

The present invention relates to a memory reproducing method of an optical disc player.

To this end, the present invention executes the memory regeneration from the memory stop position even when the normal regeneration key signal is input as well as the memory regeneration key signal in the state where the time data for the memory stop position is stored for reproducing and the reproduction is stopped. In addition, when the disc tray is opened, the disc tray is closed by determining whether the disc is replaced and erasing the memory stop position data only when the disc is replaced, and retaining the previously stored memory stop position data when the disc is not replaced. There is provided a memory reproducing method of an optical disc player which enables memory reproducing even after the recording is performed.

Therefore, the present invention maintains previously stored storage position data for memory playback even if the disc is not replaced, even if the disc tray is opened / closed during memory playback. Even when a reproduction key signal is input, there is an effect that memory reproduction can be executed from the stored storage stop position.

Description

Memory playback method of optical disc player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memory reproducing method of an optical disc player. In particular, when the disc is not replaced even when the disc tray is opened / closed, the memory reproducing can be performed at a previously stored storage position. And a memory playback method of the optical disc player.

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.

On the other hand, in such an optical disc player, in order to provide convenience for use, playback is stopped at a desired position during playback, and the time data at the stopped position is stored, and then played again from that position. Memory playback function is built in to execute.

That is, this function stores and stores the position where the user stops playback when the user cannot continuously play and watch the disc while the user is playing the predetermined disc. This function allows the playback to be executed continuously.

By the way, the conventional optical disc player has a table of contents (TOC) data indicating information on the contents recorded on the mounted disc and the storage position data previously stored for storage reproduction, as long as the disc tray for mounting the disc is opened. Configured to be erased.

In addition, the conventional optical disc player is configured to execute playback from the start position of data recorded on the disc when a key signal for normal reproduction instead of the memory reproduction is input while the predetermined storage position data is stored for the memory reproduction. It is.

Therefore, conventionally, even when the storage position data is stored for reproducing during reproduction, and the disc tray is opened / closed for a purpose other than replacing the disk, the previously stored storage position data is erased and subsequently stored. There was a problem that playback could not be performed. Also, if the normal playback key signal is input while the storage position data for the memory playback is stored and playback is stopped, playback from the beginning again is performed even though playback has been performed on the data before the memory stop position previously for the disc. There was a problem running it.

Accordingly, the present invention has been made to solve such a problem in the prior art, and an object of the present invention is to maintain the storage position data previously stored for memory regeneration when the disc is not replaced even when the disc tray is opened / closed. Further, there is provided a memory reproducing method of an optical disc player for reproducing from a memory stop position where memory position data is stored for memory reproducing, not only when a memory reproducing key signal is input but also when a general reproducing key signal is input. It is.

According to a preferred embodiment of the present invention for achieving this object, a method of storing and reproducing an optical disc player for storing and storing a desired predetermined position during reproducing, and subsequently executing reproducing from that position again. (A) reading and storing TOC (table of contents) data from a disc loaded in the disc tray, and then executing playback when a playback key signal is input; and (b) storing stop key signal for storage playback. Storing the time data of the playback position at the time when the memory stop key signal is input as the storage position data and stopping playback; and (c) after the step (b), the disc tray is opened and the disk is replaced. Erases the TOC data and storage location data, closes the disk tray, and reads the TOC data for the replaced disk. Storing; and (d) after the step (b), if the disc tray is not opened or if the disc tray is closed when the disc tray is opened and the disc is not replaced, the memory play key signal or the normal play key signal. Determining whether or not is inputted, and if the memory playback key signal or the general playback key signal is input, executing playback from the position where the memory is stopped according to the storage position data stored in the step (b).

1 is a schematic block diagram of a general optical disc player for practicing the present invention.

2 is in accordance with a preferred embodiment of the present invention

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

10: pickup and actuator unit 20: RF signal amplification and servo signal processing unit

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

50: microcomputer 55: sensor

60: digital signal processing unit 70: MPEG decoder

80: audio signal processor 90: video signal processor

100: speaker 110: screen

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

1 is a schematic block diagram of an optical disc player for practicing the present invention.

As shown in FIG. 1, an optical disc player for carrying out the present invention includes a pickup and actuator unit 10, an RF (radio frequency) signal amplification and servo signal processor 20, a motor and motor driver 30, and a key input unit. 40, microcomputer 50, sensor unit 55, digital signal processor 60, MPEG decoder 70, audio signal processor 80, video signal processor 90, speaker 100, screen 110 ).

The key input unit 40 provides a function key signal to the microcomputer 50 for executing a predetermined function in the optical disc player.

In addition, the microcomputer 50 generates control signals for executing the functions according to the function key signals provided from the key input unit 40 to the respective constituent members.

On the other hand, when the playback key signal is input from the key input unit 40 and the microcomputer 50 generates a control signal for playback, the pickup and actuator unit 10 receives the light from the disk loaded in the disk tray (not shown). The pickup is performed, and the RF signal read according thereto is output to the RF signal amplification and servo signal processing unit 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 processing unit 20 amplifies the RF signal provided from the pickup and actuator unit 10 and provides a servo control signal according to the signal to the motor and the motor driving unit 30 to provide the focus servo and the tracking servo. To be done.

The digital signal processor 60 digitally processes the amplified RF signal provided from the RF signal amplification and servo signal processor 20, performs error detection and error correction, and then outputs the signal to the MPEG decoder 70. Q data indicative of the time data for the reproduction position is provided to the microcomputer 50.

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 100 and the screen 110, respectively. And the screen 110 are displayed as an audio and an image, respectively.

Meanwhile, according to the present invention, when the memory stop key signal for storing time data for a predetermined storage position is input from the key input unit 40 for the memory reproduction during the reproduction process through the above-described process, the microcomputer ( 50) stores the time data of the current position where the memory stop key signal is input, that is, the time data of the memory stop position, in the internal memory (not shown) with reference to the Q data provided from the digital signal processor 60. At the same time, playback is stopped. At this time, the pickup and actuator portion 10 returns to the initial position before playback and the disc is unloaded.

Thereafter, when the normal regeneration or memory regeneration key signal is input from the key input unit 40, the microcomputer 50 generates a control signal to the motor and the motor drive unit 30 according to the time data for the memory location stored in the motor and the motor drive unit. By driving 30, the pick-up and actuator unit 10 is transferred to a stored storage position, the disc is loaded, and playback is performed from the storage position.

On the other hand, when the disc tray open key signal is input from the key input unit 40 while the memory stop key signal is input to store the time data for the memory stop position and the playback is stored, the microcomputer 50 generates the motor and the motor driving unit 30. A control signal is generated to open the disc tray, and thereafter, it is determined whether or not the disc mounted on the disc tray is replaced.

That is, according to the present invention, the sensor unit 55 for detecting the presence or absence of the disc is mounted on the disc tray on which the disc is mounted. The disk presence sensor may be a contact switch mounted on the upper surface of the disk tray and turned on or off depending on whether the disk is mounted. The disk presence sensor may be formed of a light emitting part and a light receiving part, and emits light from the light emitting part and reflects on the disk surface. It may be an optical detection sensor that detects the presence or absence of a disk by receiving the received light from the light receiving unit. The output terminal of the sensor unit 55 is connected to a predetermined one input port of the microcomputer 50 to the microcomputer 50 to the disk. Provide a presence detection signal.

Therefore, when the disc tray is opened, the microcomputer 50 determines whether to replace the disc from the disc presence determination signal provided from the sensor unit 55. When the disc is present, the sensor unit 55 generates a 'high' signal. If no signal is generated, the microcomputer 50 may detect whether the disk is replaced by detecting a change in the detection signal from the sensor unit 55. If the signal of ',' low 'and' high 'is provided continuously, it is determined that the disk has been replaced.If the' high 'signal remains, it is determined that the disk has not been replaced.After the' high 'signal, the' low 'signal is determined. Is generated and the 'low' signal is maintained to determine that the disc has been removed from the disc tray.

In addition, if it is determined whether the disc is replaced by the above-described process, when the disc is replaced, the microcomputer 50 first erases the pre-stored TOC data and the time data for the storage location, and then the key input unit 40. When the disk tray close key signal is inputted, a control signal is generated to the motor and the motor driving unit 30 to close the disk tray, and then read and store TOC data of the replaced disk.

In addition, when the disc is not replaced, the microcomputer 50 generates a control signal to the motor driver 30 when the disc tray close key signal is input from the key input unit 40 to close the disc tray, and the previous TOC data. And storing and retaining the time data for the storage position, so that playback is started from the storage position with reference to the time data for the stored storage position when a storage reproduction key signal or a reproduction key signal is subsequently input.

Fig. 2 is a flowchart of the memory reproducing method of the optical disc player according to the preferred embodiment of the present invention.

First, when the disc is loaded in step S10, the TOC data is read and stored in step S12, and then playback is performed when the playback key signal is input in step S14.

Then, in step S16, it is determined whether a memory stop key signal for memory regeneration is input while reproducing is being executed. If the memory stop key signal is input in step S16, the process proceeds to step S18 and a memory stop key signal. Stores the time data at the input current position, that is, the position at which memory stops for ginger reproduction, and at the same time stops reproduction.

Further, thereafter, in step S20, a disc tray open key signal is input to determine whether the disc tray is opened. If the disc tray is opened, the process proceeds to step S26, and if not, the process goes to step S22.

First, when proceeding from step S20 to step S22, it is determined in step S22 whether a normal reproduction or storage reproduction key signal is input. When the flow returns to S20 and the flow is re-executed and inputted, the flow advances to step S24 to execute the memory regeneration at the position where the memory has been stopped, and then the flow ends.

When the process proceeds from step S20 to step S26, in step S26, it is determined whether the disk has been replaced, as described with reference to FIG. If it is determined in step S26 that the disk has been replaced, the process proceeds to step S28, and if the disk is not replaced, the process proceeds to step S34.

On the other hand, if it is determined in step S26 that the disc has not been replaced and the process proceeds to step S28, in step S28, the TOC data stored in the steps S12 and S18 and the stored stop position of the disk are previously determined. If the time tray is erased and then the disc tray is closed in step S30, the TOC data for the replaced disk is read-stored in step S32 and the flow ends.

On the other hand, if it is determined in step S26 that the disc has not been replaced and proceeds to step S34, in step S34, a disc tray close key signal is input to determine whether the disc tray is closed. If the disc tray is not closed in step S34, the flow returns to step S26. If the disc tray is closed, the flow advances to step S36 and the stored TOC data and the stored stop position in steps S12 and S18. Maintain storage of time data.

After that, when the memory regeneration or normal regeneration key signal is input in step S38, the flow advances to step 40 to execute memory regeneration from the position where the memory has been stopped and the flow ends.

As described above, according to the present invention, even when the disc tray is opened / closed at the time of storing and reproducing, when the disc is not replaced, the storage position data previously stored for storing and reproducing is retained, and a memory reproducing key signal is inputted. Not only the case but also when the normal playback key signal is input, there is an effect that memory playback can be executed from the stored memory stop position.

Claims (1)

A memory reproducing method of an optical disc player for storing and storing a desired predetermined position during reproducing, and subsequently reproducing the reproducing continuously from the position. (A) reading and storing TOC (table of contents) data from the disc loaded in the disc tray and executing playback when a play key signal is input; (B) when the memory stop key signal for memory reproduction is input, storing the time data for the playback position at the time when the memory stop key signal is input as the memory position data and stopping the reproduction; (C) after the step (b), when the disc tray is opened and the disc is replaced, erasing the TOC data and storage location data, closing the disc tray, and reading and storing the TOC data for the replaced disc; (D) After the step (b), if the disc tray is not opened or the disc tray is closed while the disc tray is opened and the disc is not replaced, it is determined whether a memory play key signal or a normal play key signal is input. And reproducing the memory from the position at which the memory is stopped according to the memory position data stored in the step (b) when the memory reproducing key signal or the general reproducing key signal is input.