JPS56101623A - Autotracking system - Google Patents

Autotracking system

Info

Publication number
JPS56101623A
JPS56101623A JP429880A JP429880A JPS56101623A JP S56101623 A JPS56101623 A JP S56101623A JP 429880 A JP429880 A JP 429880A JP 429880 A JP429880 A JP 429880A JP S56101623 A JPS56101623 A JP S56101623A
Authority
JP
Japan
Prior art keywords
mixer
inputted
output
reproducing head
tracking
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
JP429880A
Other languages
Japanese (ja)
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 JP429880A priority Critical patent/JPS56101623A/en
Publication of JPS56101623A publication Critical patent/JPS56101623A/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
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To correct tracking automatically by slantingly fixing a tracking detecting head of track width greater than that of a reproducing head to the reproducing head and by detecting as a tracking differential signal a phase shift between reproduced signals of both the heads. CONSTITUTION:A tracking detecting head with track width greater than that of a reproducing head is fixed to the reproducing head slantingly. The reproduction output of reproducing head 2 is passed through voltage amplifier 13 to obtain reproduced signal 15, which is also inputted to mixers 20 and 21 via LPD14. The reproduction output of detecting head 4 is inputted to mixers 20 and 21 via voltage amplifier 16, phase inverter 17, and delay devices 18 and 19. Both delay devices 18 and 19 differ in delay time. The output of mixer 20 is inputted to mixer 25 via wave detector 22 and inverter 23, and the output of mixer 21 is inputted to mixer 25 via wave detector 24. The output of mixer 25 is passed through current amplifier 26, switch circuit 27 and DM motor 9 to correct tracking automatically.
JP429880A 1980-01-18 1980-01-18 Autotracking system Pending JPS56101623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP429880A JPS56101623A (en) 1980-01-18 1980-01-18 Autotracking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP429880A JPS56101623A (en) 1980-01-18 1980-01-18 Autotracking system

Publications (1)

Publication Number Publication Date
JPS56101623A true JPS56101623A (en) 1981-08-14

Family

ID=11580600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP429880A Pending JPS56101623A (en) 1980-01-18 1980-01-18 Autotracking system

Country Status (1)

Country Link
JP (1) JPS56101623A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5180213A (en) * 1975-01-10 1976-07-13 Tokyo Shibaura Electric Co
JPS54143216A (en) * 1978-04-28 1979-11-08 Toshiba Corp Magnetic recorder-reproducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5180213A (en) * 1975-01-10 1976-07-13 Tokyo Shibaura Electric Co
JPS54143216A (en) * 1978-04-28 1979-11-08 Toshiba Corp Magnetic recorder-reproducer

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