KR100667731B1 - Incorporated disk recording/reproducing apparatus - Google Patents

Abstract

The present invention relates to a disc recording / reproducing apparatus, comprising: an operation key portion providing a signal for operating a first disc drive portion, a second disc drive portion, the first and second disc drive portions, and a signal provided from the operation key portion; Therefore, by integrally configuring in one set to include a system control unit for controlling the first and second disc drive units in common, the audio / video signal compressed and recorded on the first disc is not extended to the second disc. The recording reduces the deterioration of data generated by compression / extension, and provides the advantage of lowering the unit cost of the product by using the same building blocks in common.

Description

Integrated disk recording / reproducing apparatus

1 is a block diagram of a conventional disc recording / reproducing apparatus.

2 is an external view of a disc recording / reproducing apparatus according to the present invention.

3 is a schematic structural block diagram of a disc recording / reproducing apparatus according to the present invention.

4 is a schematic structural block diagram of an embodiment of the first and second disk drives shown in FIG. 3.

FIG. 5 is a block diagram illustrating another schematic embodiment of the first and second disk drives shown in FIG. 3.

FIG. 6 is a detailed block diagram of the first and second disc drives shown in FIG. 4.

FIG. 7 is a detailed block diagram of the disc recording / reproducing apparatus shown in FIG.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc recording / playback apparatus, and more particularly, to a disc recording / playback apparatus in which the first and second disc drive units are integrated into one set.

1 is a block diagram of a conventional disc recording / reproducing apparatus.

In the case of Fig. 1, a separate disc player and a disc recorder are connected via a connection cable.

The disc recording / reproducing apparatus shown in FIG. 1 includes a disc reproducing apparatus 10, a disc recording apparatus 14, and a monitor 16, and optionally an external signal source 12. As shown in FIG. In addition, there is a connecting line 10a between the disc reproducing apparatus 10 and the disc recording apparatus 14, and a connecting line 14a between the external signal source 12 and the disc recording apparatus 14, and the disc recording apparatus 14 There is a connecting line 14a between the monitors 16.

The disc reproducing apparatus 10 reads the audio / video data compressed and recorded on the disc, restores the original data, and outputs the reconstructed signal as analog. The external signal source 12 generates audio / video data in analog or digital form. Analog data is output from analog signal sources such as analog VTRs, LDPs and camcorders, and digital data is output from digital signal sources such as digital VTRs and digital cameras. The disc recording apparatus 14 inputs audio / video data output from the disc reproducing apparatus 10 or the external signal source 12, converts the analog signal into a digital signal, compresses it, and then records it. Write to disk. The monitor 16 displays a signal indicating the operation state being recorded on the disc.

In order to record a signal recorded on a reproducing disc in a conventional disc recording / reproducing apparatus on a recording disc, a disc reproducing apparatus is used to completely restore and reproduce the compressed signal recorded on the reproducing disc. Record on the recording disc through the recompression process.

Therefore, repeating the process of compressing / extending the video / audio data in this way has a disadvantage in that the deterioration in the image quality and the sound quality of the video / audio data recorded on the recording disc is high.

SUMMARY OF THE INVENTION The present invention has been made to solve the above disadvantages, and includes a first and second disc drive unit in one set as a unit, and is compressed without stretching the video / audio data recorded on the first disc. It is an object of the present invention to provide an integrated disc recording / reproducing apparatus which reduces deterioration of data generated by compression / extension by recording digital video / audio data of a digital disc.

Disc recording / reproducing apparatus according to the present invention for achieving the above object is a first disk drive unit; A second disk drive unit; An operation key unit for providing a signal for operating the first and second disk drives; And a system control unit for controlling the first and second disc drive units in common according to a signal provided from the operation key unit.

The first disc drive unit is dedicated to reproduction, and the second disc drive unit is capable of reproduction and recording.

In the present invention, the video / audio data compressed and recorded on the first disk is recorded on the second disk in a compressed state without stretching.

In the present invention, the second disc drive unit corrects an error in the digital data read from the first disc, and adds an error correction code to record on the second disc.

In the present invention, the first disk drive unit reads the data recorded on the first disk to amplify to a predetermined digital signal level, and outputs a servo control signal such as tracking and focusing error signal of the optical pickup; And a first data processing unit for demodulating the data output from the data reading unit, correcting an error portion of the demodulated data, and restoring the video and audio data from the error corrected data to a predetermined standard. The disc drive section includes: a data reading / recording section including a recording section for recording data in the function of the data reading section; A second data processing unit for modulating the data output from the data reading / recording unit, correcting an error portion of the modulated data, and restoring the video and audio data from the error corrected data according to respective predetermined standards; A data input unit for converting input analog data into digital; And a third data processing unit for compressing the video and audio data output from the data input unit according to a processing standard, and adding an error correction code to the compressed data to modulate it into a recordable signal.

In the present invention, the first and second disk drive unit has a data output unit in common.

The data output unit may select a signal output from the first data processing unit and the second data processing unit, convert the selected signal into an analog signal, and output the converted signal.

In the present invention, the third data processing unit may include a second selection unit for selecting video / audio data processed in the integrated set and externally input video / audio data.

In the present invention, it characterized in that it comprises a data processing unit for processing the first and second data processing unit as one common block and selecting the data output from the data reading unit and the data reading / recording unit.

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

2 is an external view of a disc recording / reproducing apparatus according to the present invention.

In Fig. 2, reference numeral 200 denotes a first disc deck portion, reference numeral 202 denotes a second disc deck portion, reference numeral 204 denotes a power supply switch, and reference numeral 206 denotes an operation key portion for a first disc. Reference numeral 208 denotes an operation key for a second disc, and reference numeral 210 denotes a display.

3 is a schematic structural block diagram of a disc recording / reproducing apparatus according to the present invention.

The apparatus shown in FIG. 3 includes a first disk drive unit 30, a second disk drive unit 32, a system control unit 34, and an operation key unit & display unit 36. As shown in FIG. Here, the first disk drive unit 30 is configured for playback only, and the second disk drive unit 32 is configured for playback and recording. Accordingly, a record key is added to the operation key portion of the second disk drive portion as shown in FIG.

The operation key unit & display unit 36 is a variety of operation switches and display devices installed on the exterior, the operation key unit refers to a switch for operating playback / recording, and the display unit refers to a liquid crystal display device for displaying the operation state of the disc. .

The system controller 34 is a part for controlling an operation corresponding to various key parts input from the operation key part 36, and controls the entire system including the first and second selection parts.

4 is a schematic structural block diagram of an embodiment of the first and second disk drives shown in FIG. 3.

In FIG. 4, the first disk drive unit 30 includes a data read unit 30a and a first data processor 30b, and the second disk drive unit 32 includes a data read / write unit 32a and second data. A processing unit 32b, a third data processing unit 32c, and a data input unit 32d. Here, the data output section 30c is a common part of the first and second disk drive sections.

Here, the data reading unit 30a reads out the data recorded on the first disk, amplifies it to a predetermined digital signal level, and outputs a servo control signal such as tracking and focusing error signals of the optical pickup.

The first data processor 30b demodulates the data output from the data reader 30a, corrects an error portion of the demodulated data, and restores the video and audio data from the error corrected data to a predetermined standard and outputs the same.

The data reading / writing section 32a includes a recording section for recording data in the function of the data reading section 32a.

The second data processing unit 32b demodulates the data output from the data reading / recording unit 32a, corrects an error portion of the demodulated data, and restores the video and audio data from the error corrected data according to a predetermined standard. Let's do it.

 The data input unit 32d converts the input analog data into digital data.

The third data processor 32c compresses the video and audio data output from the data input unit 32d according to each processing standard, and adds an error correction code to the compressed data to modulate it into a recordable signal. Here, the third data processor 32c includes a selector for selecting a signal processed in the set and a signal input from the outside. That is, the selector selects data output from the first data processor 30b or data output from the data input unit 32d.

The data output unit 30c selects a signal output from the first data processing unit 30b and the second data processing unit 32b, converts the selected signal into an analog signal, and outputs the converted signal. Here, since the data output unit 30c is a common part of the first and second disk drive units, a selection unit for selecting data output from the first or second data processing units 30b and 32b is included. A detailed configuration block of FIG. 4 will be described with reference to FIG. 6 below.

FIG. 5 is a block diagram illustrating another schematic embodiment of the first and second disk drives shown in FIG. 3.

5 has the following differences compared to the case shown in FIG. 4, and therefore only the differences will be described. In FIG. 5, the first and second data processing units shown in FIG. 4 are processed by the first data processing unit 30b ′, which is a common block, and the selection unit included in the data output unit of FIG. 4 is configured to include the first data processing unit ( 30b '). This selecting section selects data output from the data reading section 30a and the data reading / writing section 32a. A detailed configuration block of FIG. 5 will be described with reference to FIG. 7.

FIG. 6 is a detailed block diagram of the first and second disc drives shown in FIG. 4.

In FIG. 6, the data reading unit 30a includes a first disc deck unit 301a, a first digital servo unit 302a, and a first high frequency (RF) amplifying unit 303a. The data read / write unit 32a includes a second disc deck unit 321a, a second digital servo unit 322a, a second high frequency (RF) amplifier 323a, and a recording unit 327a. Here, the first and second digital servo units 302a and 322a are blocks for controlling the disk and the optical pickup, controlling focusing and tracking of the optical pickup, and controlling the spindle motor. The first and second high frequency (RF) amplifiers 303a and 323a generate a server control signal such as a high frequency (RF) equalizer portion that amplifies a small signal read from the disc to a digital level and a focusing and tracking error signal. It is divided into two parts. The recording unit 327a is a portion for recording the modulated digital stream data on the disk, and records the data of '0' and '1' on the disk while changing the power of the laser.

The first and second data processing units 30b and 32b connect the first data decoder 304a, the first video / audio decoder 305a, the second data decoder 324a, and the second video / audio decoder 325a. It includes each. Here, the first and second data decoders 304a and 324b input signals amplified by the first and second high frequency (RF) amplifiers 303a and 323a, demodulate them into digital signals, and demodulate digital signals. It is responsible for error correction function that checks and corrects an error of data. Since the data output from the first and second data decoders 304a and 324b are compressed data, the first and second video / audio decoders 305a and 325b restore the data to their original state. do. Normally, video signals are compressed in MPEG 2 video format, and audio signals are compressed in DOLBY AC-3 format or MPEG 2 audio format.

The data output unit 30c includes a first selector 307a, a video encoder 308a, an audio DAC 309a, and a digital audio transmitter 310a. Here, the first selector 307a selects and outputs one of two stream data A (B) input under the control of the system controller 34. The video encoder 308a converts a digital video signal into an analog signal, and outputs a composite video signal or an RGB signal to a television receiver or a monitor device. The audio DAC 309a converts a digital audio signal into an analog signal and outputs left and right channel signals to an analog audio amplifier. The digital audio signal transmitter 310 outputs the digital audio signal as it is and is output to the digital amplifier.

The data input unit 32d includes a video preprocessor 331a, an audio ADC 332a, and a digital audio signal receiver 333a. Here, the video preprocessor 331a converts the input analog video signal into a digital signal. The audio ADC 332a converts the input analog audio signal into a digital signal. The digital audio signal receiver 333a inputs a digital audio signal.

The third data processor 32c includes a video / audio encoder 330a, a second selector 329a, and a data encoder 328a. Here, the video / audio encoder 330a compresses the input digital video / audio signal. The video / audio encoder 330a compresses the input digital video / audio signal. The video / audio encoder 330a compresses the video signal in the MPEG 2 video format. Compress. The second selector 329a selects and outputs stream data output from the data decoder 304a or the video / audio encoder 330a under the control of the system controller 34. The data encoder 328a adds an error correction code to the compressed video / audio data and modulates to produce a recordable signal on the disc.

FIG. 7 is a detailed block diagram of the disc recording / reproducing apparatus shown in FIG.

The first disk driver 30 'and the second disk driver 32' include the first data processor 30b 'and the data output unit 30c' in common. Therefore, FIG. 7 is different from the configuration of the first data processing unit 30b 'and the data output unit 30c' as compared to FIG. 6, and therefore only the detailed configuration of this part will be described.

The first data processor 30b 'includes a first selector 307b, a data decoder 304b, and a video / audio for selecting signals output from the first and second high frequency (RF) amplifiers 303b and 323b. A decoder 305b. The data output unit 30c includes a video encoder 308b, an audio DAC 309b, and a digital audio transmitter 310b.

Next, the operation of the apparatus illustrated in FIG. 3 will be described in detail with reference to the configuration of the exemplary embodiment illustrated in FIG. 4. A method of reproducing video / audio data recorded on a first disc and a second disc, a method of recording an external input signal on a second disc, and a method of recording a signal reproduced on a first disc on a second disc Let's look at them in order.

A case of playing the first disc is as follows. The user presses the open key of the first disc to open the tray, mounts the disc, and presses the play key of the first disc. At this time, as the first disk is rotated, data recorded on the first disk is read. The reproduction signal of the first disc is amplified by the first high frequency (RF) amplifier 303a, and the tracking / focusing / spindle / sled is controlled by the first digital servo unit 302a. The reproduction signal output from the first high frequency (RF) amplifier 303a is corrected by using a de-interleave operation and an error correction code through the first data decoder 304a. The error corrected signal is restored to the original signal through the video / audio decoder 305a. The reconstructed signal is selected through the first selector 307a, and the video signal is converted into an analog signal by the video encoder 308a and output, and the audio signal is output as an analog signal through the audio DAC 309a, or In some cases, the digital audio signal is output as a digital audio signal through the digital audio signal transmitter 310a.

The reproduction of the second disc is similar to that of the reproduction of the first disc, and thus description thereof will be omitted.

Next, a method of recording an external input signal on the second disk will be described. The user presses the open key of the recording second disc to open the tray, mounts the second disc, and presses the record key of the second disc. In this case, the externally input video signal is converted into a digital signal through the video preprocessor 331a, and the audio signal is converted into a digital signal through the audio ADC 332a or digitally received through the digital audio signal receiver 333a. Audio signal is input directly. The digitally processed video / audio signal is compressed into recordable data according to each standard through the video / audio encoder 330a. The compressed data is interleaved and an error correction code is added through the data encoder 328a via the second selector 329a. The data to which the error correction code is added is recorded on the second disk through the recording unit 327a.

Finally, a method of recording a signal recorded on the first disk onto a second disk is as follows. Press the opening keys of the first and second disks to open their respective trays, and load the corresponding disks respectively. Of course, in this case, the first disc is for reproduction, and the second disc is for recording. The first disc is played and the second disc is switched to the recording mode. At this time, as the first disk is rotated, data recorded on the first disk is read. The read signal is amplified by the first high frequency (RF) amplifier 303a, and the focusing / tracking / spindle / sled is controlled through the first digital servo unit 302a. The amplified reproduction signal is deinterleaved and error corrected in the data decoder 304a. The error corrected data is input to the data encoder 328a through the second selector 329a. The second selector 329a is controlled by the system controller. Data input to the data encoder 328a is added with an interleave and an error correction code, and recorded on the second disc through the recording unit 327a.

In addition, since the operation of the apparatus shown in FIG. 3 based on the configuration of another embodiment shown in FIG. 5 is similar to the above-described operation description, a detailed operation description is omitted.

As described above, according to the present invention, since the audio / video signal compressed and recorded on the first disk is recorded on the second disk as it is, the deterioration of data caused by compression / extension can be reduced, and the same function can be reduced. The common use of building blocks provides the advantage of lowering the cost of the product.

Claims (10)

delete delete delete delete In the disc recording / playback apparatus, A first disc drive unit dedicated to video / audio data reproduction; A second disc drive unit capable of reproducing and recording video / audio data; An operation key unit for providing a signal for operating the first and second disk drives; A system control unit which controls the first and second disc driving units in common according to a signal provided from the operation key unit; And And an integrated disc recording / reproducing apparatus in one set so as to include a data output unit which the first disc driving unit and the second disc driving unit have in common. The method of claim 5, wherein the first disk drive unit A data reading unit which reads the data recorded on the first disk, amplifies to a predetermined digital signal level, and outputs a servo control signal such as an optical pickup tracking and focusing error signal; And a first data processing unit for demodulating the data output from the data reading unit, correcting an error portion of the demodulated data, and restoring the video and audio data from the error corrected data according to a predetermined standard. The second disc drive unit A data reading / recording section including a recording section for recording data in the function of the data reading section; A second data processing unit for modulating the data output from the data reading / recording unit, correcting an error portion of the modulated data, and restoring the video and audio data from the error corrected data according to respective predetermined standards; A data input unit for converting input analog data into digital; And a third data processing unit for compressing the video and audio data output from the data input unit according to a processing standard, and adding an error correction code to the compressed data to modulate it into a recordable signal. Device. 6. The integrated disc recording / reproducing apparatus according to claim 5, wherein the video / audio data compressed and recorded on the first disc is recorded on the second disc in a compressed state without stretching. 7. The integrated disc recording / reproducing apparatus according to claim 6, wherein the data output unit selects signals output from the first data processing unit and the second data processing unit, and converts the selected signals into analog signals. 7. The integrated disc recording / reproducing apparatus according to claim 6, wherein the third data processing unit includes a second selection unit for selecting video / audio data processed in the integrated set and video / audio data input from the outside. Device. 7. The integrated disc recording apparatus as claimed in claim 6, further comprising a data processing unit for processing the first and second data processing units into one common block and selecting data output from the data reading unit and the data reading / recording unit. / Playback device.

Images