FR2633766A1 - Method and apparatus for detecting the position of an optical head - Google Patents

Method and apparatus for detecting the position of an optical head Download PDF

Info

Publication number
FR2633766A1
FR2633766A1 FR8909993A FR8909993A FR2633766A1 FR 2633766 A1 FR2633766 A1 FR 2633766A1 FR 8909993 A FR8909993 A FR 8909993A FR 8909993 A FR8909993 A FR 8909993A FR 2633766 A1 FR2633766 A1 FR 2633766A1
Authority
FR
France
Prior art keywords
optical
optical card
card
track
optical head
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
FR8909993A
Other languages
English (en)
French (fr)
Other versions
FR2633766B1 (enrdf_load_stackoverflow
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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP60072042A external-priority patent/JP2556465B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Priority to FR8909993A priority Critical patent/FR2633766A1/fr
Publication of FR2633766A1 publication Critical patent/FR2633766A1/fr
Application granted granted Critical
Publication of FR2633766B1 publication Critical patent/FR2633766B1/fr
Granted 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
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/01—Details
    • G06K7/015—Aligning or centering of the sensing device with respect to the record carrier
    • 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
    • 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
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/14—Control of operating function, e.g. switching from recording to reproducing by sensing movement or position of head, e.g. means moving in correspondence with head movements
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/10—Packet switching elements characterised by the switching fabric construction
    • H04L49/104—Asynchronous transfer mode [ATM] switching fabrics
    • H04L49/105—ATM switching elements
    • H04L49/106—ATM switching elements using space switching, e.g. crossbar or matrix
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5603—Access techniques
    • H04L2012/5604—Medium of transmission, e.g. fibre, cable, radio
    • H04L2012/5605—Fibre

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
FR8909993A 1985-04-05 1989-07-25 Method and apparatus for detecting the position of an optical head Granted FR2633766A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8909993A FR2633766A1 (en) 1985-04-05 1989-07-25 Method and apparatus for detecting the position of an optical head

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60072042A JP2556465B2 (ja) 1985-04-05 1985-04-05 記録再生装置の光ヘッドアクセス方法
FR8909993A FR2633766A1 (en) 1985-04-05 1989-07-25 Method and apparatus for detecting the position of an optical head

Publications (2)

Publication Number Publication Date
FR2633766A1 true FR2633766A1 (en) 1990-01-05
FR2633766B1 FR2633766B1 (enrdf_load_stackoverflow) 1994-04-15

Family

ID=26227488

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8909993A Granted FR2633766A1 (en) 1985-04-05 1989-07-25 Method and apparatus for detecting the position of an optical head

Country Status (1)

Country Link
FR (1) FR2633766A1 (enrdf_load_stackoverflow)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943563A (en) * 1969-03-17 1976-03-09 Lemelson Jerome H System and method for recording and reproducing video information on a card
US4121249A (en) * 1972-08-02 1978-10-17 Lemelson Jerome H Card recording and reproduction apparatus and method
US4398223A (en) * 1955-06-14 1983-08-09 Lemelson Jerome H System for recording video information on a record card
EP0158906A2 (en) * 1984-03-31 1985-10-23 Dai Nippon Insatsu Kabushiki Kaisha Optical card

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398223A (en) * 1955-06-14 1983-08-09 Lemelson Jerome H System for recording video information on a record card
US3943563A (en) * 1969-03-17 1976-03-09 Lemelson Jerome H System and method for recording and reproducing video information on a card
US4121249A (en) * 1972-08-02 1978-10-17 Lemelson Jerome H Card recording and reproduction apparatus and method
EP0158906A2 (en) * 1984-03-31 1985-10-23 Dai Nippon Insatsu Kabushiki Kaisha Optical card

Also Published As

Publication number Publication date
FR2633766B1 (enrdf_load_stackoverflow) 1994-04-15

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