KR0161921B1 - Data separately- recording method for multiple recording medium, and simultaneous reproducing method and device thereof - Google Patents

Abstract

Disclosure of the Invention The present invention provides a method for separating and recording data into a plurality of recording media, and simultaneously reproducing the data from the plurality of recording media so that the separated digital data can be simultaneously recorded using a plurality of pickups. And to a method.

In the conventional technology, since the amount of information recorded on the recording medium is limited, only a certain amount of data can be recorded at all times. Therefore, the quality and sound quality are limited as the amount of information is limited, and the display speed according to the serial processing of the data. In view of the delay, the present invention sequentially records the image information of the even frame and the right audio information of the stereo in each sector of the first recording medium, and the image of the odd frame in each sector of the second recording medium. By sequentially recording the information and the left audio information of the stereo and having a pickup corresponding to the first and second recording media, the sampling rate of the video and audio can be increased, thereby improving the image quality and sound quality. Data can be parallelized to improve display speed.

Description

Method for separating and recording data into a plurality of recording media, and apparatus and method for simultaneously reproducing data therefrom

1 is a block diagram of a conventional compact disc player.

Figure 2 (a) shows a data format on a conventional compact disc.

(b) is a schematic diagram of a separation process of video and audio information recorded on a conventional compact disc.

3 is a block diagram of an apparatus for simultaneously reproducing data from a plurality of recording media according to the present invention.

4 is a diagram showing an information format recorded on two compact discs according to the present invention.

5 is a process explanatory diagram of information recorded on two compact discs using two pickups according to the present invention;

6 is a process explanatory diagram of information recorded on two identical disks having the same data using two pickups according to the present invention.

* Explanation of symbols for main parts of the drawings

11,12 pickup 13,14 buffer

15,16: video, audio decoder 17: CPU

The present invention relates to a data separation recording method, a simultaneous reproducing apparatus and a method, and more particularly, to separate and record digital data on a plurality of recording media so that the separated digital data can be simultaneously reproduced using a plurality of pickups. A method of separating and recording data onto a plurality of recording media, and an apparatus and method for simultaneously reproducing data from the same.

1 shows a block diagram of a conventional compact disc player, in which information recorded on a compact disc (not shown) is read by the pickup 1 and stored in the buffer 2.

Data stored in the buffer 2 is separated into video data and audio data by the CPU 5 so that each information is divided into a video decoder 3, an audio decoder 4, and a digital / analog converter DAC1, (DAC2). And video are output as audio data.

FIG. 2 (a) shows a data format on a conventional compact disc, and (b) schematically shows a process of separating video and audio information on a compact disc. In addition, since there are odd planes together, the amount of information that can be stored on one disc is limited, thereby limiting the amount of information, thereby limiting the image quality.

In addition, the conventional technique described above is not suitable for processing a moving picture because it takes a long time by reading information on a compact disc and serial processing of video and audio data when the CPU processes the information.

In addition, in CD-ROM and the like, the disk was driven at double speed to reduce the data access time by 1/2. However, since only a certain amount of data is always stored in the disk capacity, the amount of information is limited and thus the quality and sound quality are limited.

Disclosure of Invention The present invention has been made to solve such a problem, and an object of the present invention is to separate and record data onto a plurality of recording media to increase the data capacity by using a plurality of recording media to improve image quality and sound quality, and to improve processing speed. The present invention provides a method and apparatus and method for simultaneously reproducing data therefrom.

A feature of the present invention for achieving the above object is a method of recording continuously input image data on an optical recording medium, wherein the input image data is alternately inputted to each sector of the first recording medium and the second recording medium. A method of separating and recording data onto a plurality of recording media for recording.

Another feature of the invention is a plurality of pickups for reading information recorded on the first and second recording media each having video information and audio information, a plurality of buffers for temporarily storing the information read by the pickup, and the buffers. A video and audio decoder for decoding the video and audio information stored in the memory, a CPU for controlling each unit, and video and audio information read from the first and second recording media under control of the CPU, and storing the video and audio information in the buffer. And a digital analog converter which converts the output of the video and audio decoder into analog signals and outputs video and audio signals.

Another feature of the present invention is a first step of reproducing even-frame image information recorded in the corresponding sector of the first recording medium, and a second step of reproducing odd frame image information recorded in the corresponding sector of the second recording medium; And a third step of alternately switching the first and second steps, and a fourth step of displaying the even / odd frame image information output in the third step on the image display means. The data is reproduced simultaneously.

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

3 is a block diagram of a data simultaneous reproduction processing apparatus from a plurality of recording media according to the present invention, and reads information recorded on a compact disc (not shown) each having screen information and audio information. The pickups 11 and 12 and the buffers 13 and 14 for temporarily storing the information read by the pickups 11 and 12 are configured to correspond to the number of compact discs, respectively. The decoders 15, 16, CPU 17, digital analog converters DAC11, DAC12, and the like are configured in the same manner as in the prior art.

4 shows information formats recorded on each compact disc. In each sector of the compact disc A, image information on screens 1 and 3, image information on left audio information, and so on are sequentially displayed. In each sector of the compact disc B, video information on screens 0 and 2, right audio information, and the like are sequentially recorded.

The present invention constituted as described above, the pickup 11 reads the information in the first sector of the compact disc A and stores it in the buffer 13, and the pickup 12 reads the information in the first sector of the compact disc B. Stored in the buffer 14.

The CPU 17 processes the information stored in the buffers 13 and 14 to obtain necessary video information, and sequentially reads sectors of the respective compact discs A and B to obtain video and audio information.

In order to do this, when video and audio information are recorded on a disc, the video information should be recorded on different discs as shown in FIG. Each of the discs must be recorded on the disc, thereby reinforcing the image quality of about 2 times, and the original audio information can be sampled about twice as much as the case where there is only the voice information, thereby reinforcing the sound quality.

Alternatively, image information should be recorded on disks in even / odd columns for each screen.

On the other hand, if there is a disk having a conventional data format, the information on the second disk is searched and waited in advance while the first disk is being driven, so that the disk having the existing data format can be driven, and the two pickups read the data. Parallel processing is also possible to improve display speed.

5 is a diagram schematically illustrating a flow of reading and processing data from two disks having screen information and audio information, respectively. The video and audio information recorded on the compact disk A and the compact disk B are switched by the CPU 17. FIG. Under the control of (SW1), the video is piled up in the image buffer 13, and the audio is stacked in the audio buffer 14, and the data are processed by the video decoder 15 and the audio decoder 16 to be displayed on the screen and output the audio.

In particular, in FIG. 5, when one movie is recorded on two discs, the image quality can be improved by sampling at twice the resolution and recording on each disc, and the voice is also improved by doubling the sampling for the voice. You can do it.

6 shows a case where two identical disks having two pickups and the same data are played, a and c indicate positions of one of the two pickups, and b indicates the position of the other pickup. As shown, the first pick-up reads sector 0 (a) of compact disk A and the second pick-up reads sector 1 (b) of disk B at the same time.

Therefore, the data read at the same time are separated into video and audio data under the control of the switch SW1 of the CPU 17, stacked in the buffers 13 and 14, and processed by the video decoder 15 and the audio decoder 16, respectively. It outputs voice and audio output, and in this case, two discs are read and processed at the same time, thereby improving display speed.

As described above, the present invention includes n pickups, and the sampling rate of video and audio information can be increased when each disc corresponding to the pickup has a correlation, thereby improving image quality and sound quality. The display speed is improved as a plurality of pickups read data and enable parallel processing of the data.

Claims (2)

First and second disc playback pickups for recording information of one program and reproducing information from the first and second recording media, a buffer for storing the information reproduced by the pickup, and the buffers. A video and audio decoder which decodes video and audio information stored in the system, a CPU controlling the entire system, a selection unit for separating and storing data reproduced from the first and second recording media under control of the CPU; And a digital / analog converter converting the output of the video and audio decoder into an analog signal and outputting the analog signal. A first step of reproducing image information stored in the first recording medium, a second step of reproducing audio information stored in the second recording medium, and switching the first and second steps alternately to synchronize the image information and the audio information. And a fourth step of switching to be outputted, and a fourth step of displaying the video information and the audio information output in the third step.