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GB2117166B - System for detecting the operative face of a disc carrying data on one face only - Google Patents
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GB2117166B - System for detecting the operative face of a disc carrying data on one face only - Google Patents

System for detecting the operative face of a disc carrying data on one face only

Info

Publication number
GB2117166B
GB2117166B GB08305262A GB8305262A GB2117166B GB 2117166 B GB2117166 B GB 2117166B GB 08305262 A GB08305262 A GB 08305262A GB 8305262 A GB8305262 A GB 8305262A GB 2117166 B GB2117166 B GB 2117166B
Authority
GB
United Kingdom
Prior art keywords
face
detecting
carrying data
disc carrying
operative
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.)
Expired
Application number
GB08305262A
Other versions
GB2117166A (en
GB8305262D0 (en
Inventor
Alayer De Costemore D Arc St D
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.)
Staar SA
Original Assignee
Staar SA
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 BE0/207406A external-priority patent/BE892274A/en
Application filed by Staar SA filed Critical Staar SA
Publication of GB8305262D0 publication Critical patent/GB8305262D0/en
Publication of GB2117166A publication Critical patent/GB2117166A/en
Application granted granted Critical
Publication of GB2117166B publication Critical patent/GB2117166B/en
Expired 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
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • 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
    • G11B17/02—Details
    • G11B17/04—Feeding or guiding single record carrier to or from transducer unit
GB08305262A 1982-02-25 1983-02-25 System for detecting the operative face of a disc carrying data on one face only Expired GB2117166B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE0/207406A BE892274A (en) 1982-02-25 1982-02-25 Data face detector for optical data storage disc - indicating failure to focus laser beam on data track using flip=flop arid RC delay when wrong face is exposed

Publications (3)

Publication Number Publication Date
GB8305262D0 GB8305262D0 (en) 1983-03-30
GB2117166A GB2117166A (en) 1983-10-05
GB2117166B true GB2117166B (en) 1985-11-06

Family

ID=3843506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08305262A Expired GB2117166B (en) 1982-02-25 1983-02-25 System for detecting the operative face of a disc carrying data on one face only

Country Status (3)

Country Link
JP (1) JPS58155524A (en)
GB (1) GB2117166B (en)
IT (1) IT1193692B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63195667U (en) * 1987-06-02 1988-12-16
KR100194040B1 (en) 1996-04-19 1999-06-15 윤종용 Disc Discrimination Device of Optical Disc Player System

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH312674A (en) * 1952-01-17 1956-02-15 Assmann Gmbh Wolfgang Method and arrangement for monitoring the operational readiness of transmission systems with automatic magnetic sound reproduction devices
NL249950A (en) * 1959-03-31
US3449733A (en) * 1964-04-01 1969-06-10 Nat Standard Co Methods and apparatus for use in the industrial magnetic materials art
SE329039B (en) * 1964-05-22 1970-09-28 Philips Svenska Ab
BE758401A (en) * 1969-11-03 1971-05-03 Bell & Howell Co INFORMATION READING METHODS AND APPARATUS
JPS5038305B1 (en) * 1969-11-20 1975-12-09
US3838291A (en) * 1973-05-17 1974-09-24 Hewlett Packard Co Detector indicating availability and position of tape
SE368423B (en) * 1973-05-30 1974-07-01 Sandvik Ab
JPS5737777A (en) * 1980-08-19 1982-03-02 Victor Co Of Japan Ltd Reproducing device for rotary information recording medium

Also Published As

Publication number Publication date
IT1193692B (en) 1988-07-21
GB2117166A (en) 1983-10-05
IT8319808A0 (en) 1983-02-25
JPS58155524A (en) 1983-09-16
GB8305262D0 (en) 1983-03-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee