CA1218148A - Generation de signaux d'erreur de position approximative modules en amplitude dans une memoire a disques optiques utilisant des pistes de positionnement asservi approximatif - Google Patents

Generation de signaux d'erreur de position approximative modules en amplitude dans une memoire a disques optiques utilisant des pistes de positionnement asservi approximatif

Info

Publication number: CA1218148A
Authority: CA; Canada
Prior art keywords: signal; signals; collection surface; reflected; amplitude
Prior art date: 1983-06-13
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

CA000456409A

Other languages

English (en)

Inventor

Majeed K. Abed

Charles A. Farel

Paul M. Romano

Allan L. Samson

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.)

Storage Technology Partners II

Original Assignee

Storage Technology Partners II

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.)

1983-06-13

Filing date

1984-06-12

Publication date

1987-02-17

1984-06-12 Application filed by Storage Technology Partners II filed Critical Storage Technology Partners II

1987-02-17 Application granted granted Critical

1987-02-17 Publication of CA1218148A publication Critical patent/CA1218148A/fr

Status Expired legal-status Critical Current

Links

230000003287 optical effect Effects 0.000 title claims abstract description 44
230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 title 1
238000012545 processing Methods 0.000 claims abstract description 29
230000005855 radiation Effects 0.000 claims description 54
238000002310 reflectometry Methods 0.000 claims description 19
238000000034 method Methods 0.000 claims description 15
238000001514 detection method Methods 0.000 claims description 14
238000001914 filtration Methods 0.000 claims description 6
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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
- G11B7/08—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
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08582—Sled-type positioners
- G11B7/08588—Sled-type positioners with position sensing by means of an auxiliary system using an external scale

Landscapes

Moving Of The Head To Find And Align With The Track (AREA)
Optical Recording Or Reproduction (AREA)

CA000456409A 1983-06-13 1984-06-12 Generation de signaux d'erreur de position approximative modules en amplitude dans une memoire a disques optiques utilisant des pistes de positionnement asservi approximatif Expired CA1218148A (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US50395583A	1983-06-13	1983-06-13
US503,955		1983-06-13

Publications (1)

Publication Number	Publication Date
CA1218148A true CA1218148A (fr)	1987-02-17

Family

ID=24004225

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000456409A Expired CA1218148A (fr)	1983-06-13	1984-06-12	Generation de signaux d'erreur de position approximative modules en amplitude dans une memoire a disques optiques utilisant des pistes de positionnement asservi approximatif

Country Status (3)

Country	Link
EP (1)	EP0145755A1 (fr)
CA (1)	CA1218148A (fr)
WO (1)	WO1984004965A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5347388A (en) *	1989-12-01	1994-09-13	Scientific-Atlanta, Inc.	Push-pull optical receiver having gain control
GB2251751A (en) *	1990-10-09	1992-07-15	Gaertner W W Res	Position and orientation measurement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3435232A (en) *	1966-03-03	1969-03-25	Hewlett Packard Co	Beam position detector
JPS53148412A (en) *	1977-05-30	1978-12-25	Mitsubishi Electric Corp	Optical recorder or reproducer
JPS5718033A (en) *	1980-07-04	1982-01-29	Victor Co Of Japan Ltd	Reproducing device for optical information recording medium
US4556964A (en) *	1981-12-21	1985-12-03	Burroughs Corporation	Technique for monitoring galvo angle
NL8200208A (nl) *	1982-01-21	1983-08-16	Philips Nv	Inrichting voor het uitlezen van een schijfvormige registratiedrager.

1984
- 1984-05-24 EP EP19840902390 patent/EP0145755A1/fr not_active Withdrawn
- 1984-05-24 WO PCT/US1984/000808 patent/WO1984004965A1/fr not_active Ceased
- 1984-06-12 CA CA000456409A patent/CA1218148A/fr not_active Expired

Also Published As

Publication number	Publication date
EP0145755A1 (fr)	1985-06-26
WO1984004965A1 (fr)	1984-12-20

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Legal Events

Date	Code	Title	Description
2004-06-12	MKEX	Expiry