JPS5764313A - Recording and reproducing method for digital data - Google Patents

Recording and reproducing method for digital data

Info

Publication number
JPS5764313A
JPS5764313A JP14075780A JP14075780A JPS5764313A JP S5764313 A JPS5764313 A JP S5764313A JP 14075780 A JP14075780 A JP 14075780A JP 14075780 A JP14075780 A JP 14075780A JP S5764313 A JPS5764313 A JP S5764313A
Authority
JP
Japan
Prior art keywords
data sink
data
motor
disc
detected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14075780A
Other languages
Japanese (ja)
Inventor
Yoshihiko Asano
Takeo Toyama
Yutaka Tamura
Toshiaki Hioki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP14075780A priority Critical patent/JPS5764313A/en
Publication of JPS5764313A publication Critical patent/JPS5764313A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements

Abstract

PURPOSE:To rotate a disc with a constant linear speed, by recording a data sink on a disc so that it is modulated as a specified repetitive period, detecting it at reproduction through FM demodulation, and controlling the rotation of a motor with this data sink. CONSTITUTION:In the control of a motor rotating a PCM disc on which PCM signals are recorded consisting of a data sink and data, the data sink (e.g., 24 bits) consists of the 1st data sink for data synchronism and the 2nd data sink for motor control, and the 2nd data sink S2 can be detected by applying a reproduced signal from a pickup 1 to an FM demodulation circuit 9 and applying the output to a synchronizing separation circuit 10. This detected 2nd data sink S2 is inputted to a motor control circuit 6 of PLL constitution as a comparison signal, the rotation of the motor 8 is accurately controlled, an MFM demodulation circuit 2 is driven, and the 1st data sink S1 for data synchronism can be detected with the demodulated data D<1>.
JP14075780A 1980-10-07 1980-10-07 Recording and reproducing method for digital data Pending JPS5764313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14075780A JPS5764313A (en) 1980-10-07 1980-10-07 Recording and reproducing method for digital data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14075780A JPS5764313A (en) 1980-10-07 1980-10-07 Recording and reproducing method for digital data

Publications (1)

Publication Number Publication Date
JPS5764313A true JPS5764313A (en) 1982-04-19

Family

ID=15276023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14075780A Pending JPS5764313A (en) 1980-10-07 1980-10-07 Recording and reproducing method for digital data

Country Status (1)

Country Link
JP (1) JPS5764313A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157773A (en) * 1984-01-27 1985-08-19 Ricoh Co Ltd Synchronizing signal detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157773A (en) * 1984-01-27 1985-08-19 Ricoh Co Ltd Synchronizing signal detector

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