JPS55129946A - Disc reproducing device - Google Patents

Disc reproducing device

Info

Publication number
JPS55129946A
JPS55129946A JP3612379A JP3612379A JPS55129946A JP S55129946 A JPS55129946 A JP S55129946A JP 3612379 A JP3612379 A JP 3612379A JP 3612379 A JP3612379 A JP 3612379A JP S55129946 A JPS55129946 A JP S55129946A
Authority
JP
Japan
Prior art keywords
time base
circuit
tracking
signal
pilot signal
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
JP3612379A
Other languages
Japanese (ja)
Inventor
Kenji Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3612379A priority Critical patent/JPS55129946A/en
Publication of JPS55129946A publication Critical patent/JPS55129946A/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
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/03—Driving or moving of heads for correcting time base error during transducing operation, by driving or moving the head in a direction more or less parallel to the direction of travel of the recording medium, e.g. tangential direction on a rotating disc

Abstract

PURPOSE:To simplify a circuit by equipping a time base control unit, etc., to constitute the circuit so that the tracking signal may be used for time base fluctuation compensation. CONSTITUTION:Signal information from tracks TR2 and TR3 are separated from each other by band-pass filter circuits 28 and 27 respectively and are multiplied by the voltage control oscillator output, which is synchronized with the pilot signal approximately, in multiplier circuits 37 and 39 to lead out amplitude change of each pilot signal. Next, amplitude change is compared in differential amplifying circuit 41, and the difference output voltage is applied to tracking unit as a tracking control quantity. The signal of phase detection circuit 29 or 33 which outputs a voltage corresponding to phase change of the pilot signal controls the speed of the stylus through time base control unit 47 in the track advance direction and backward direction. Thus, tracking compensation and time base fluctuation compensation can be performed with a simple circuit.
JP3612379A 1979-03-27 1979-03-27 Disc reproducing device Pending JPS55129946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3612379A JPS55129946A (en) 1979-03-27 1979-03-27 Disc reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3612379A JPS55129946A (en) 1979-03-27 1979-03-27 Disc reproducing device

Publications (1)

Publication Number Publication Date
JPS55129946A true JPS55129946A (en) 1980-10-08

Family

ID=12460996

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3612379A Pending JPS55129946A (en) 1979-03-27 1979-03-27 Disc reproducing device

Country Status (1)

Country Link
JP (1) JPS55129946A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200969A (en) * 1981-06-01 1982-12-09 Victor Co Of Japan Ltd Jitter correcting circuit of reproducing device for disk-like information recording medium
JPS5812170A (en) * 1981-07-14 1983-01-24 Victor Co Of Japan Ltd Jitter compensating circuit for disk-shape information recording medium reproducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200969A (en) * 1981-06-01 1982-12-09 Victor Co Of Japan Ltd Jitter correcting circuit of reproducing device for disk-like information recording medium
JPS5812170A (en) * 1981-07-14 1983-01-24 Victor Co Of Japan Ltd Jitter compensating circuit for disk-shape information recording medium reproducer

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