JPS56165956A - Time axis variation correcting system for reproducing device of recorded information - Google Patents

Time axis variation correcting system for reproducing device of recorded information

Info

Publication number
JPS56165956A
JPS56165956A JP6868380A JP6868380A JPS56165956A JP S56165956 A JPS56165956 A JP S56165956A JP 6868380 A JP6868380 A JP 6868380A JP 6868380 A JP6868380 A JP 6868380A JP S56165956 A JPS56165956 A JP S56165956A
Authority
JP
Japan
Prior art keywords
output
horizontal synchronizing
time axis
oscillator
subcarrier
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
JP6868380A
Other languages
Japanese (ja)
Other versions
JPS6243596B2 (en
Inventor
Hitoshi Kanamaru
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.)
Pioneer Video Corp
Universal Pioneer Corp
Original Assignee
Pioneer Video Corp
Universal Pioneer Corp
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 Pioneer Video Corp, Universal Pioneer Corp filed Critical Pioneer Video Corp
Priority to JP6868380A priority Critical patent/JPS56165956A/en
Publication of JPS56165956A publication Critical patent/JPS56165956A/en
Publication of JPS6243596B2 publication Critical patent/JPS6243596B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/081—Disposition or mounting of heads or light sources relatively to record carriers for time base error correction by moving the light beam

Landscapes

  • Rotational Drive Of Disk (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To prevent fluctuation of reproduced picture and out of color synchronism, by providing a horizontal synchronizing signal generator singly and controlling a subcarrier oscillating frequency with low component of a horizontal synchronizing phase error. CONSTITUTION:The output of a horizontal synchronizing oscillator 22 becomes one input to a horizontal synchronizing phase comparator 13, the output of the comparator 13 is fed to an adder 16 and an LPF24, and the output of the LPF24 is given to a subcarrier oscillator 14 as a control input via a selector switch SW23. Further, an SW21 grounds the output of a subcarrier phase comparator 19 and opens a tangential servoloop, and when the SW23 is switched to grounding side, a spindle servoloop only is operated, and a reproduced video signal including time axis variation is outputted from a photodiode 8. In this case, when the SW21 is actuated, a reproduced video signal eliminated for the time axis variance is obtained with a mirror 4, and when the SW23 is switched, the oscillating phase of an oscillator 14 is controlled for continuous change.
JP6868380A 1980-05-22 1980-05-22 Time axis variation correcting system for reproducing device of recorded information Granted JPS56165956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6868380A JPS56165956A (en) 1980-05-22 1980-05-22 Time axis variation correcting system for reproducing device of recorded information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6868380A JPS56165956A (en) 1980-05-22 1980-05-22 Time axis variation correcting system for reproducing device of recorded information

Publications (2)

Publication Number Publication Date
JPS56165956A true JPS56165956A (en) 1981-12-19
JPS6243596B2 JPS6243596B2 (en) 1987-09-16

Family

ID=13380770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6868380A Granted JPS56165956A (en) 1980-05-22 1980-05-22 Time axis variation correcting system for reproducing device of recorded information

Country Status (1)

Country Link
JP (1) JPS56165956A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128879A (en) * 1983-01-12 1984-07-25 Matsushita Electric Ind Co Ltd Device for correcting fluctuation of time axis
JPS60126978A (en) * 1983-12-14 1985-07-06 Hitachi Ltd Motor servo circuit of record and reproduction type video disk player

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128879A (en) * 1983-01-12 1984-07-25 Matsushita Electric Ind Co Ltd Device for correcting fluctuation of time axis
JPS60126978A (en) * 1983-12-14 1985-07-06 Hitachi Ltd Motor servo circuit of record and reproduction type video disk player

Also Published As

Publication number Publication date
JPS6243596B2 (en) 1987-09-16

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