KR910009108B1 - Fast recording and reproducing device using disk reproducing system - Google Patents

Abstract

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Description

High speed recording and playback device using disc playback system

1 is a block diagram showing a first embodiment of a high-speed recording and reproducing apparatus using the disc reproducing system of the present invention.

2 is a block diagram showing a second embodiment of the above.

3 is a block diagram showing a conventional system configuration for recording a playback signal of a compact disc onto a tape.

* Explanation of symbols for main parts of the drawings

11 signal processing unit 12 optical pickup

13: compact disc 14: clock generator

15: disc motor 16: tape recorder

17: clock generator 18: 1/2 division circuit

19: switch circuit 20: signal processing unit

21: optical pickup 22: compact disc

23: disc motor 24: servo unit

25 tape recorder 26 microcomputer

The present invention relates to, for example, a disc reproducing system such as a compact disc player. In particular, the present invention relates to a high speed recording / reproducing apparatus for reproducing the disc at a higher speed than the standard reproducing speed so as to record the high speed reproducing signal on another recording medium. It is about.

As is well known, for example, when recording an analog audio signal obtained from a compact disc player to a tape with a tape recorder, the system configuration as shown in FIG. 3 is conventionally taken.

That is, reference numeral 11 in the figure is a signal processing section, and the optical pickup 12 data slices the RF signal read out from the compact disc 18 to a predetermined slice level and waveform-shapes the normal digital data. A synchronous clock is generated to perform data extraction and data separation, error correction and correction processing, and digital / analog conversion to reproduce analog audio signals.

Each of the above operations of the signal processing unit 11 is configured to be executed in synchronization with a clock FCK of a constant frequency output from the clock generator 14 installed in the compact disc player.

In addition, the signal processor 11 controls the disc motor 15 for rotating the compact disc 13 according to the signal read out from the optical pickup 12 and the clock FCK output from the clock generator 14. The rotation speed of the compact disc 13 is controlled so as to be a constant linear velocity (CLV).

The signal processing section 11 is provided with a servo section 11a. The servo unit 11a performs the focus servo and tracking servo on the optical pickup 12 in accordance with the signal read out by the optical pickup 12, and controls the pickup and transfer motor, not shown, for the optical pickup 12. Of the compact disc 13 in the radial direction. In addition, the clock FCK is not directly involved in the operation of the servo unit 11a.

In this way, the analog audio signal output from the signal processor 11 is guided to the recording input terminal R of the tape recorder 16 so that the analog audio signal reproduced by the compact disc player is recorded on the tape.

However, in the conventional system configuration as described above, even when the analog audio signal reproduced by the compact disc player is recorded on the tape, since it is performed at the same standard speed as when the normal compact disc 13 is reproduced, a long time is required. do. However, although a simple recording operation that does not need to be listened to and enjoyed by a playback signal is desirable to shorten its execution time and to increase time efficiency, the conventional system has a disadvantage of poor time efficiency.

As described above, in the conventional system configuration for recording a signal reproduced in the disc reproducing system on another recording medium such as tape, there is a problem of poor time efficiency.

Therefore, the present invention has been studied in view of the above circumstances, and an extremely good disc capable of recording a signal output from a disc reproducing system in a shorter time than a standard speed on another recording medium and improving the time efficiency at the time of recording. An object of the present invention is to provide a high speed recording and reproducing apparatus used for a reproducing system.

In other words, the high-speed recording and reproducing apparatus using the disc reproducing system according to the present invention reads digital data recorded on the disc and reproduces the analog data in synchronism with the reference clock signal of a predetermined frequency, and reads from the disc and the reference. A disc reproducing system which compares clock signals and controls a rotation speed of a disc is targeted.

For example, a fast lock signal having a frequency n times the reference clock signal and a standard speed clock corresponding to the reference lock signal obtained by dividing the fast lock signal by 1 / n are selectively supplied to the disc reproducing system. Recording means for executing the disc playback in the disc reproducing system at a standard speed or a speed of n times the standard speed and switching the recording speed to a standard speed or a speed of n times the standard speed according to this selection state. It is configured to record the analog data output from the disc playback system using.

According to the above configuration, a high speed clock signal having a frequency of n times the reference clock signal is supplied to the disc reproducing system, and the disc is reproduced at high speed n times the standard speed, and the disc reproduction signal is n times the standard speed. Since the recording is performed on another recording medium at a recording speed of, the signal output from the disc reproducing system can be recorded on another recording medium faster than the standard speed and the time can be improved.

EXAMPLE

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

First, a first embodiment of the present invention will be described with reference to FIG. In Fig. 1, reference numeral 17 denotes a clock generator, which generates, for example, a fast clock 2.FCK having two frequencies, for example, the reference clock. The high speed clock 2.FCK is changed into a standard speed clock FCK corresponding to the reference clock via the 1/2 frequency divider circuit 18. The high speed clock 2.FCK and the standard speed clock FCK are configured to be selectively guided to the signal processing unit 20 by the switch circuit 19.

Here, the signal processing unit 20 tunes to the high speed clock 2.FCK or the standard speed clock FCK selected by the switch circuit 19 to receive a predetermined slice level of the RF signal read out from the compact disc 22 by the optical pickup 21. The data is then sliced and shaped into normal digital data to generate a bit-synchronous clock from the digital data to perform data extraction and data separation, error correction and correction processing, and digital / analog conversion to reproduce analog audio signals. .

In addition, the signal processing unit 20 is a disk motor for rotating the compact disc 22 according to the signal read out by the optical pickup 12 and the high speed clock 2.FCK or standard speed clock FCK selected by the switch circuit 19. (23) is controlled so that the rotational speed of the compact disc 22 becomes the linear speed constant CLV.

Therefore, in the state where the standard speed clock FCK is selected by the switch circuit 19, the signal processing unit 20 reproduces the compact disc 22 at the standard speed, and the high speed clock 2.FCK is generated by the switch circuit 19. In the selected state, the signal processing unit 20 reproduces the compact disc 22 at a speed twice the standard speed.

The signal processing unit 20 is provided with a servo unit 24. The servo unit 24 performs the focus servo and tracking servo on the optical pickup 21 according to the signal read out from the optical pickup 21, and simultaneously controls the pickup and transfer motor (not shown) to control the compact disc of the optical pickup 21. The movement in the radial direction of 22 is controlled. Note that the high speed clock 2.FCK and the standard small clock FCK are not directly involved in the operation of the servo unit 24.

The servo unit 24 includes a standard speed servo circuit having suitable servo characteristics when the compact disc 22 is reproduced at a standard speed, and a high speed servo circuit having suitable servo characteristics when the compact disc 22 is reproduced at high speed. Two types of servo circuits are provided.

The analog audio signal output from the signal processing unit 20 is guided to the recording input terminal R of the tape recorder 25. The tape recorder 25 records the analog audio signal supplied to the recording input terminal R by driving the tape (not shown) at a standard speed and records the high speed by driving the tape at a speed twice the standard speed. Have.

The switching of the switch circuit 19, the switching of the two servo circuits of the servo unit 24, and the switching between the standard speed recording and the high speed recording of the tape recorder 25 are performed by the microcomputer 26. That is, in the state where the switch circuit 19 is switched to the state shown in the figure and the standard speed clock FCK is supplied to the signal processing unit 20 and the reproduction of the compact disc 22 is performed at the standard speed, the servo unit 24 is compact. When the disc 22 is being reproduced at the standard speed, the tape recorder 25 is switched to perform the recording operation at the standard speed while performing the servo operation by the standard speed servo circuit having a suitable servo characteristic.

As a result, the analog audio signal reproduced at the standard speed in the signal processing unit 20 is recorded on the tape at the standard speed by the tape recorder 25.

When the switch circuit 19 is switched to the state opposite to that shown in the figure and the high speed clock 2.FCK is supplied to the signal processing unit 20 to reproduce the compact disc 22 at high speed, the servo unit 24 is compact. When the disc 22 is being played back at high speed, the tape recorder 25 is switched to perform a recording operation at a high speed while performing a servo operation by a high speed servo circuit having a suitable servo characteristic.

As a result, the analog audio signal reproduced at high speed by the signal processing unit 20 is recorded on the tape at high speed by the tape recorder 25, and the reproduction signal of the compact disc 22 can be recorded on the tape in a shorter time than the standard speed. The time efficiency at the time of recording can be improved.

Next, FIG. 2 shows a second embodiment of the present invention. That is, the second embodiment uses the clock synchronous type as the tape recorder 25, and the high speed clock 2.FCK or the standard speed clock FCK selected by the switch circuit 19 of the compact disc player is transferred to the tape recorder 25. It was to supply.

According to such a structure, the switch circuit 19 is switched to the state shown in the figure, and the standard speed clock FCK is supplied to the signal processing unit 20, and the tape recorder ( 25) Record at standard speed according to this standard speed clock FCK. In the state where the switch circuit 19 is switched to the state opposite to that shown in the figure and the high speed clock 2.FCK is supplied to the signal processing unit 20, and the reproduction of the compact disc 22 is performed at high speed, the tape recorder 25 Also, recording is performed at high speed in accordance with this fast clock 2.FCK.

As a result, in the second embodiment, the recording speed of the tape recorder is automatically switched in accordance with the selection in the switch circuit 19. Since the recording speed of the tape recorder 25 is not switched by the microcomputer 26, the configuration can be simplified. In addition, the reproduction speed of the signal processing unit 20 and the recording speed of the tape recorder 25 are controlled by the high speed clock 2.FCK and the standard speed clock FCK having a frequency of 1/2 of the high speed clock 2.FCK. The operation of compact disc players and tape recorders can be precisely matched.

In addition, this invention is not limited to the said Example, In addition, it can variously deform and implement in the range which does not deviate from the summary.

In other words, the reproduction speed of the disc reproducing system and the recording speed of the recording medium can each be any speed n (n > 1) higher than the standard speed.

Therefore, as described above, according to the present invention, the signal output from the disc reproducing system can be recorded on another recording medium faster than the standard speed, and an extremely excellent disc reproducing system can be used to improve the time efficiency during recording. A high speed recording and reproducing apparatus can be provided.

Claims (7)

A disk motor 23 for rotating the disk, an optical pickup 21 for reading digital data recorded on the disk, a clock generator 17 for generating a clock signal of a predetermined frequency, and a clock signal given by the clock generator 17 In accordance with the rotation control of the disc motor 23, the movement control of the optical pickup 21, and the disc reproducing system composed of a signal processing unit 20 which performs predetermined digital processing on the digital data read by the optical pickup 21. A division means (18) for dividing the first clock signal given by the clock generator (17) and outputting a second clock signal; a first clock signal given by the clock generator (17), and the division means (18). And a switch means (19) for selectively applying the second clock signal given by the signal to the signal processing section (20). 2. The microcomputer according to claim 1, wherein said switch means (19) is controlled to cause selection of said first clock signal given from said clock generator (17) and said second clock signal given from said dividing means (18). A disc reproducing apparatus, characterized in that 26 is provided. 3. The disc reproducing system according to claim 2, wherein the signal processing section (20) comprises a first servo means suitable for the first clock signal and a second servo means suitable for the second clock signal. 4. The microcomputer (26) according to claim 3, wherein the microcomputer (26) performs the control of the switch means (19) and the selective control of the first servo means and the second servo means in the signal processor (20). Disc playback system, characterized in that. A disc motor 23 for rotating the disc, an optical pickup 21 for reading digital data recorded on the disc, a clock generator 17 for generating a clock signal of a predetermined frequency, and a clock signal given by the clock generator 17 According to the present invention, the signal processing unit 20 performs predetermined digital processing for the digital data read out by the optical pickup 21, the rotation control of the disc motor 23, and the conversion to the corresponding analog signal. In the reproduction recording apparatus using the disc reproducing system composed of the recording means 25 for recording the analog signal given by the signal processing section 20, the first clock signal given by the clock generator 17 is divided by A divider means 18 for outputting a two-clock signal, a first clock signal given by the clock generator 17 and a second clock signal given by the divider means 18 are selected. The switch means 19 to be applied to the signal processor 20, the switch means 19 and the first clock signal given from the clock generator 17 and the second given from the frequency distribution means 18 And a microcomputer (26) for interlocking the clock signal and the recording speed of the recording means (25). 6. The disc reproducing system as set forth in claim 5, wherein said signal processing section (20) comprises a first servo means suitable for said first clock signal and a second servo means suitable for said second clock signal. 7. The microcomputer 26 according to claim 6, wherein the microcomputer 26 performs the control of the switch means 19 and the selective control of the first servo means and the second servo means in the signal processor 20. Disc playback system, characterized in that.

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