JPS57109144A - Signal recording and reproducing device - Google Patents

Signal recording and reproducing device

Info

Publication number
JPS57109144A
JPS57109144A JP18586680A JP18586680A JPS57109144A JP S57109144 A JPS57109144 A JP S57109144A JP 18586680 A JP18586680 A JP 18586680A JP 18586680 A JP18586680 A JP 18586680A JP S57109144 A JPS57109144 A JP S57109144A
Authority
JP
Japan
Prior art keywords
recording medium
head
recorded
constitution
pulse
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
JP18586680A
Other languages
Japanese (ja)
Other versions
JPS6214894B2 (en
Inventor
Junichiro Ikeuchi
Shuzo Hirahara
Taiji Higashiyama
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 JP18586680A priority Critical patent/JPS57109144A/en
Publication of JPS57109144A publication Critical patent/JPS57109144A/en
Publication of JPS6214894B2 publication Critical patent/JPS6214894B2/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
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To determine a track location to be recorded at first, and to make the search accurate and easy, by forming a specified metallic film pattern on a recording medium and using a detection signal through the change in the reflection power. CONSTITUTION:A metallic film pattern 9 is coated in sawtooth wave at the circumference of an insulated film 4 of a recording medium 1, and a photodetector 10 detecting the optical reflection power is moved radially in interlocking with a head 6 on it. With this constitution, since the output is inverted at the pattern 9 and film 4, a specified pulse train is generated from the detector 10. The width of this pulse is broader at the outer circumference and narrower at the inner circumference of the recording medium 1. The head 6 is located where the pulse width takes a certain value to make the location as a track position to be recorded first, and when reproduction, and when the head 6 is tracked to said value, the track position recorded first can be searched accurately and easily.
JP18586680A 1980-12-26 1980-12-26 Signal recording and reproducing device Granted JPS57109144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18586680A JPS57109144A (en) 1980-12-26 1980-12-26 Signal recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18586680A JPS57109144A (en) 1980-12-26 1980-12-26 Signal recording and reproducing device

Publications (2)

Publication Number Publication Date
JPS57109144A true JPS57109144A (en) 1982-07-07
JPS6214894B2 JPS6214894B2 (en) 1987-04-04

Family

ID=16178242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18586680A Granted JPS57109144A (en) 1980-12-26 1980-12-26 Signal recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS57109144A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58169354A (en) * 1982-03-31 1983-10-05 Hitachi Ltd Information recording disk
EP0113051A2 (en) * 1982-12-30 1984-07-11 International Business Machines Corporation System for position detection on a rotating disk

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58169354A (en) * 1982-03-31 1983-10-05 Hitachi Ltd Information recording disk
EP0113051A2 (en) * 1982-12-30 1984-07-11 International Business Machines Corporation System for position detection on a rotating disk

Also Published As

Publication number Publication date
JPS6214894B2 (en) 1987-04-04

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