KR19980058847A - Improved playback of video compact disc players - Google Patents

Abstract

The present invention relates to a method for reproducing and storing a video compact disc, comprising the steps of: (a) storing and storing a current playback position when a storage stop key signal is provided during playback; (B) when a memory reproducing key signal is input, determining whether the memory stop position has been reached while performing an image search from a data start position recorded on the disc; And (c) if the memory stop position is reached in step (b), then performing normal playback from that position.

Therefore, in the present invention, the user can recognize the contents of the previous data in a short time by performing an image search on the data before the storage stop position in performing the memory regeneration. By executing normal playback, there is an effect that can help the user understand the contents of the data to be played back.

Description

Improved playback of video compact disc players

The present invention relates to a playback method of a video compact disc player. In particular, in performing a memory playback in a video compact disc player, an image search is first performed on data before the memory playback position, and then normal playback starts from the storage position. An improved video compact disc player is provided.

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, among the above-described optical disc players, the video compact disc player has a built-in memory playback function for convenience of use.

This memory regeneration function allows the user to memorize and store a desired position while reproducing, and then replay from the stored position again.

In other words, if the user cannot perform playback until the end due to various reasons such as time effects while the user is playing the predetermined disc, the position where the playback is to be stopped is stored. The playback is continued from the position where playback was previously stopped.

However, in the conventional memory reproducing method, when the user stops reproducing for memory reproducing and replays after a long time has elapsed, previously reproduced data due to a temporal effect and a decrease in continuity of reproducing. There is a problem in that the contents of the data may be forgotten, which may cause some difficulty in understanding the contents of the entire data during memory playback.

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 user with an image search function first with respect to data before a memory stop position for memory playback. An improved video playback method of a video compact disc player that performs normal playback from a later storage location is provided.

According to a preferred embodiment of the present invention for achieving the above object, a position which is stopped during playback for a predetermined disc is memorized, and if playback is subsequently performed, playback is performed from that position, but before the memory stopped position. In the improved playback method of a video compact disc player for performing normal playback from a memory stop position after executing image search for the data of (a), if (a) a memory stop key signal is provided during playback, Stopping storing after storing and storing the current playback position; and (b) determining whether or not the stored stop position has been reached by performing an image search from a data start position recorded on the disc when a memory playback key signal is input. And (c) executing normal playback from the position when the memory stop position is reached. And are constructed.

1 is a schematic block diagram of a typical video compact disc player for practicing the present invention.

2 is a detailed flowchart showing a method of reproducing and storing an improved video compact disc player according to 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 60: digital signal processing part

70: MPEG decoder 80: Audio signal processor

90: video signal processing unit 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 a video compact disc player for practicing the present invention.

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

The pickup and actuator unit 10 executes an optical pickup from a disc loaded in a disc tray (not shown) and outputs an RF signal which is read accordingly.

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 an 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 so that the focus servo and the tracking servo can be performed. do.

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 100 and the screen 110, respectively. The screen 110 transmits the output signals of the audio signal processor 80 and the video signal processor 90 as audio and displays them as images.

On the other hand, according to the present invention, while the playback key signal is input from the key input unit 40 and the playback is performed on the predetermined disk through the above-described process under the control of the microcomputer 50, the user inputs the key. When the storage stop key signal for storage reproduction is provided from the input unit 40, the microcomputer 50 stores the time data of the storage stop position in the internal memory with reference to the Q data provided from the digital signal processing unit 60. At the same time, the control signal is generated by the motor and the motor driver 30 to stop the reproduction.

Then, when the memory regeneration key signal is input from the user through the key input unit 40, the microcomputer 50 generates a control signal to the motor and the motor drive unit 30 to drive the pickup transport motor (not shown) to pick up the pickup ( 10) is driven to the start of the first track of the disc, i.e., to the start position where the actual data is recorded, and then the drive speed of the spindle motor (not shown) that rotates the disc is driven at a predetermined speed faster than during normal playback. To execute the image search function.

In addition, when the image search function is executed, the microcomputer 50 compares the time information of the current search position with the time data of the pre-stored stored stop position with reference to the Q data provided from the digital signal processor 60, and the current search position. Determines whether the memory stop position has been reached, and when the memory stop position is reached, control signals are generated by the motor and the motor drive unit 30 to drive the spindle motor at the speed during normal regeneration so that regeneration can be normally performed from the position. do.

Fig. 2 is a detailed flowchart of the storage reproduction method of the improved video compact disc player according to the preferred embodiment of the present invention.

When playback is performed in step S10, it is determined in step S20 whether a storage stop key signal for storage reproduction at a predetermined position is input. If the memory stop key signal is input in step S20, the flow advances to step S30. Otherwise, the flow is fed back.

When the memory stop key signal is input in step S20 and the process proceeds to step S30, in step S30, time data at the position where the memory stop key signal is input is stored with reference to the Q data, and at the same time, playback is stopped. .

Thereafter, in step S40, it is judged whether or not a memory reproducing key signal for executing memory regeneration is input from the memory stop position input in step S20. When the memory reproducing key signal is input in step S40, the step ( Proceed to S50).

Then, in step S50, the picture search function is executed from the start position of the first track on which the actual data is recorded on the disc.

In step S60, the time data for the current image search position is compared with the time data at the storage stop position stored in step S30 to determine whether the current search position has reached the storage stop position.

In step S60, the time data for the current image search position is compared with the time data at the storage stop position stored in step S30, and if the current search position has not reached the storage stop position, the flow is fed back and reached In other words, if the time data of the current search location and the time data of the stored stop coincide with each other, the flow advances to step S70.

Then, finally, in step S70, playback is normally performed from the memory stop position.

As described above, the present invention provides the user with a recall search for the data before the memory stop in performing the memory playback, so that the user can recognize the contents of the previous data in a short time, and the memory stop position continuously. By executing normal playback from this, there is an effect that can help the user understand the contents of the data to be played back.

Claims (1)

The position stopped during playback for a predetermined disc is stored, and if playback is subsequently performed, playback is started from that position. In the improved memory playback method of a video compact disc player for performing normal playback, (A) storing and storing the current playback position and stopping playback if a storage stop key signal is provided during playback; (B) when a memory reproducing key signal is input, determining whether the memory stopped position has been reached while performing an image search from a data start position recorded on the disc; And (c) executing normal playback from the position when the storage stop position is reached in the step (b).