JPS572175A - Tracking control device - Google Patents

Tracking control device

Info

Publication number
JPS572175A
JPS572175A JP7514180A JP7514180A JPS572175A JP S572175 A JPS572175 A JP S572175A JP 7514180 A JP7514180 A JP 7514180A JP 7514180 A JP7514180 A JP 7514180A JP S572175 A JPS572175 A JP S572175A
Authority
JP
Japan
Prior art keywords
noise
occurrence position
switch
synchronous signal
shift
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
JP7514180A
Other languages
Japanese (ja)
Other versions
JPS6364955B2 (en
Inventor
Kenji Kimura
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP7514180A priority Critical patent/JPS572175A/en
Publication of JPS572175A publication Critical patent/JPS572175A/en
Publication of JPS6364955B2 publication Critical patent/JPS6364955B2/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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head

Abstract

PURPOSE:To prevent the deterioration of picture quality due to tracking shift which is caused in a steel reproduction mode, by shifting the occurrence position of noise caused by a tracking shift between the record and reproduction modes to avoid the overlap between the position of noise occurrence and a vertical synchronous signal. CONSTITUTION:A switch 36 is switched from the 1st contact of a prescribed speed to the 2nd contact of 0-2cm/s speed, and thus the resetting of an FF64 given by a switch 362 is cancelled. Then a servo loop of a current amplifier 38-a DC servomotor 22-a control head 32-a capstan control circuit 34 is cancelled by a switch 361. In this case, if the noise caused by a tracking shift gets close to the occurrence position of a synchronous signal S22, the FF64 is set. As a result, the output S64 becomes zero with the output of an inverter 70 set at 1 to make a transistor (TR)72 conduct. With conduction of the TR72, a supply of the driving signal S32 is stopped to the motor 22 to stop the shift of a tape 10. With this stopping means, the occurrence position of noise is set within a range where no overlap occurs between the noise occurrence position and a vertical synchronous signal.
JP7514180A 1980-06-04 1980-06-04 Tracking control device Granted JPS572175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7514180A JPS572175A (en) 1980-06-04 1980-06-04 Tracking control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7514180A JPS572175A (en) 1980-06-04 1980-06-04 Tracking control device

Publications (2)

Publication Number Publication Date
JPS572175A true JPS572175A (en) 1982-01-07
JPS6364955B2 JPS6364955B2 (en) 1988-12-14

Family

ID=13567613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7514180A Granted JPS572175A (en) 1980-06-04 1980-06-04 Tracking control device

Country Status (1)

Country Link
JP (1) JPS572175A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4952911A (en) * 1972-09-21 1974-05-23
JPS5568777A (en) * 1978-11-20 1980-05-23 Hitachi Ltd Magnetic picture recorder/reproducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4952911A (en) * 1972-09-21 1974-05-23
JPS5568777A (en) * 1978-11-20 1980-05-23 Hitachi Ltd Magnetic picture recorder/reproducer

Also Published As

Publication number Publication date
JPS6364955B2 (en) 1988-12-14

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