JPS5644164A - Information signal reproducing device - Google Patents

Information signal reproducing device

Info

Publication number
JPS5644164A
JPS5644164A JP11849879A JP11849879A JPS5644164A JP S5644164 A JPS5644164 A JP S5644164A JP 11849879 A JP11849879 A JP 11849879A JP 11849879 A JP11849879 A JP 11849879A JP S5644164 A JPS5644164 A JP S5644164A
Authority
JP
Japan
Prior art keywords
signal
recording carrier
tracking element
recording
passing
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
JP11849879A
Other languages
Japanese (ja)
Inventor
Masahiro Deguchi
Mitsuro Moriya
Noboru Wakami
Yasuhiro Goto
Kazuharu Shiragami
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11849879A priority Critical patent/JPS5644164A/en
Publication of JPS5644164A publication Critical patent/JPS5644164A/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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/34—Guiding record carriers during transducing operation, e.g. for track following
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

Abstract

PURPOSE:To reproduce a picture signal stably at a rate differing from a recording rate by providing a signal converting method that reproduces a signal from a signal track recorded on a recording carrier and a scan moving method that shifts its signal reproduction scanning position nearly at right angles to the tracks. CONSTITUTION:Light beam 2 from light source 1 changes in direction at total reflecting mirror 5 after passing through intermediate lens 3 and semitransparent mirror 4 and is focused on recording carrier 7 via condenser lens 6. Reflected light 8, after passing through condenser lens 6 again, changes in direction at total reflecting mirror 5 and semitransparent mirror 4 and is photodetected by two-split photodetector 9. The output of photodetector 9 is amplified by amplifiers 10a and 10b and detected by envelope detecting circuits 11a and 11b, whose outputs are supplied to differential amplifier 12 to obtain their difference signal. As for the relation between tracking element 15 and conveyance motor 17, and track on recording carrier 7 driven by motor 16 is scanned by light beam 2 through tracking element 15 for sudden displacement on the recording carrier and conveyance motor 17 is so driven that the driving voltage of tracking element 15 will be zero on an average. Signals are recorded on recording carrier 7 spirally or concentrically.
JP11849879A 1979-09-14 1979-09-14 Information signal reproducing device Pending JPS5644164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11849879A JPS5644164A (en) 1979-09-14 1979-09-14 Information signal reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11849879A JPS5644164A (en) 1979-09-14 1979-09-14 Information signal reproducing device

Publications (1)

Publication Number Publication Date
JPS5644164A true JPS5644164A (en) 1981-04-23

Family

ID=14738150

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11849879A Pending JPS5644164A (en) 1979-09-14 1979-09-14 Information signal reproducing device

Country Status (1)

Country Link
JP (1) JPS5644164A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449723A (en) * 1981-04-28 1984-05-22 Honda Giken Kogyo Kabushiki Kaisha Vehicle fuel tank
JPS62263312A (en) * 1986-05-02 1987-11-16 Kanegafuchi Chem Ind Co Ltd Production of acrylic synthetic fiber

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226802A (en) * 1975-08-21 1977-02-28 Philips Nv Device for reading diskklike recording carrier
JPS53132940A (en) * 1977-04-25 1978-11-20 Teac Corp Optical reproducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226802A (en) * 1975-08-21 1977-02-28 Philips Nv Device for reading diskklike recording carrier
JPS53132940A (en) * 1977-04-25 1978-11-20 Teac Corp Optical reproducer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449723A (en) * 1981-04-28 1984-05-22 Honda Giken Kogyo Kabushiki Kaisha Vehicle fuel tank
JPS62263312A (en) * 1986-05-02 1987-11-16 Kanegafuchi Chem Ind Co Ltd Production of acrylic synthetic fiber
JPH0444013B2 (en) * 1986-05-02 1992-07-20 Kanegafuchi Chemical Ind

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