JPS5727413A - Recording and reproducing method of synchronous signal - Google Patents

Recording and reproducing method of synchronous signal

Info

Publication number
JPS5727413A
JPS5727413A JP10069080A JP10069080A JPS5727413A JP S5727413 A JPS5727413 A JP S5727413A JP 10069080 A JP10069080 A JP 10069080A JP 10069080 A JP10069080 A JP 10069080A JP S5727413 A JPS5727413 A JP S5727413A
Authority
JP
Japan
Prior art keywords
signal
output
synchronous
modulator
recording
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.)
Granted
Application number
JP10069080A
Other languages
Japanese (ja)
Other versions
JPH0650589B2 (en
Inventor
Ryoichi Imanaka
Tadashi Abe
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55100690A priority Critical patent/JPH0650589B2/en
Publication of JPS5727413A publication Critical patent/JPS5727413A/en
Publication of JPH0650589B2 publication Critical patent/JPH0650589B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Rotational Drive Of Disk (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To realize a stable control for the number of rotations of a recording medium, by recording the digital signal comprising the synchronous and data signals with a modulating system of the synchronous signal part different from that of the data signal part and then demodulating the above-mentioned synchronous signal during the reproduction. CONSTITUTION:An audio signal I is converted into a digital signal through a PCM modulator 1. Both the digital signal received a PCM plus a synchronous signal are delivered to the side of output (c); while a signal showing the period of the synchronous signal is produced at the side of output (b). The signal of output (c) is supplied to a modulator 2 and an FM modulator 3. Then a pilot signal (d) delivered from an oscillator 5 is gated by the signal of output (b) via a gate circuit 4, and the output signal (c) receives an FM modulator by a burst signal (e).
JP55100690A 1980-07-22 1980-07-22 Disc-shaped recording medium and recording / reproducing apparatus thereof Expired - Lifetime JPH0650589B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55100690A JPH0650589B2 (en) 1980-07-22 1980-07-22 Disc-shaped recording medium and recording / reproducing apparatus thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55100690A JPH0650589B2 (en) 1980-07-22 1980-07-22 Disc-shaped recording medium and recording / reproducing apparatus thereof

Publications (2)

Publication Number Publication Date
JPS5727413A true JPS5727413A (en) 1982-02-13
JPH0650589B2 JPH0650589B2 (en) 1994-06-29

Family

ID=14280717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55100690A Expired - Lifetime JPH0650589B2 (en) 1980-07-22 1980-07-22 Disc-shaped recording medium and recording / reproducing apparatus thereof

Country Status (1)

Country Link
JP (1) JPH0650589B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5129114A (en) * 1974-09-04 1976-03-12 Tokyo Shibaura Electric Co
JPS5135207A (en) * 1974-09-20 1976-03-25 Hitachi Ltd
JPS5415727A (en) * 1978-07-21 1979-02-05 Itsuki Ban Electromagnetic locking device
JPS5528516A (en) * 1978-08-18 1980-02-29 Hitachi Ltd Optical recording device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5129114A (en) * 1974-09-04 1976-03-12 Tokyo Shibaura Electric Co
JPS5135207A (en) * 1974-09-20 1976-03-25 Hitachi Ltd
JPS5415727A (en) * 1978-07-21 1979-02-05 Itsuki Ban Electromagnetic locking device
JPS5528516A (en) * 1978-08-18 1980-02-29 Hitachi Ltd Optical recording device

Also Published As

Publication number Publication date
JPH0650589B2 (en) 1994-06-29

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