JPS56124133A - Tracking control circuit of optical disc - Google Patents

Tracking control circuit of optical disc

Info

Publication number
JPS56124133A
JPS56124133A JP2508380A JP2508380A JPS56124133A JP S56124133 A JPS56124133 A JP S56124133A JP 2508380 A JP2508380 A JP 2508380A JP 2508380 A JP2508380 A JP 2508380A JP S56124133 A JPS56124133 A JP S56124133A
Authority
JP
Japan
Prior art keywords
control circuit
optical disc
tracking control
lower envelope
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
JP2508380A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0142052B2 (enrdf_load_stackoverflow
Inventor
Masafumi Yokota
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 JP2508380A priority Critical patent/JPS56124133A/ja
Priority to US06/237,260 priority patent/US4408314A/en
Priority to DE8181101378T priority patent/DE3167369D1/de
Priority to EP81101378A priority patent/EP0035236B1/en
Publication of JPS56124133A publication Critical patent/JPS56124133A/ja
Publication of JPH0142052B2 publication Critical patent/JPH0142052B2/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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP2508380A 1980-02-29 1980-02-29 Tracking control circuit of optical disc Granted JPS56124133A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2508380A JPS56124133A (en) 1980-02-29 1980-02-29 Tracking control circuit of optical disc
US06/237,260 US4408314A (en) 1980-02-29 1981-02-23 Record/playback track tracking servo
DE8181101378T DE3167369D1 (en) 1980-02-29 1981-02-25 Tracking servo control device
EP81101378A EP0035236B1 (en) 1980-02-29 1981-02-25 Tracking servo control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2508380A JPS56124133A (en) 1980-02-29 1980-02-29 Tracking control circuit of optical disc

Publications (2)

Publication Number Publication Date
JPS56124133A true JPS56124133A (en) 1981-09-29
JPH0142052B2 JPH0142052B2 (enrdf_load_stackoverflow) 1989-09-08

Family

ID=12156028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2508380A Granted JPS56124133A (en) 1980-02-29 1980-02-29 Tracking control circuit of optical disc

Country Status (1)

Country Link
JP (1) JPS56124133A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0142052B2 (enrdf_load_stackoverflow) 1989-09-08

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