FR2509077B1 - - Google Patents

Info

Publication number
FR2509077B1
FR2509077B1 FR8113148A FR8113148A FR2509077B1 FR 2509077 B1 FR2509077 B1 FR 2509077B1 FR 8113148 A FR8113148 A FR 8113148A FR 8113148 A FR8113148 A FR 8113148A FR 2509077 B1 FR2509077 B1 FR 2509077B1
Authority
FR
France
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
FR8113148A
Other versions
FR2509077A1 (fr
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.)
Thales SA
Original Assignee
Thomson CSF 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
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR8113148A priority Critical patent/FR2509077A1/fr
Publication of FR2509077A1 publication Critical patent/FR2509077A1/fr
Application granted granted Critical
Publication of FR2509077B1 publication Critical patent/FR2509077B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/24—Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive
    • 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
FR8113148A 1981-07-03 1981-07-03 Dispositif resonnant a lame vibrante excitee par un transducteur piezoelectrique et son application au suivi radial d'une piste d'un support d'information optique Granted FR2509077A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8113148A FR2509077A1 (fr) 1981-07-03 1981-07-03 Dispositif resonnant a lame vibrante excitee par un transducteur piezoelectrique et son application au suivi radial d'une piste d'un support d'information optique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8113148A FR2509077A1 (fr) 1981-07-03 1981-07-03 Dispositif resonnant a lame vibrante excitee par un transducteur piezoelectrique et son application au suivi radial d'une piste d'un support d'information optique

Publications (2)

Publication Number Publication Date
FR2509077A1 FR2509077A1 (fr) 1983-01-07
FR2509077B1 true FR2509077B1 (fr) 1983-10-28

Family

ID=9260182

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8113148A Granted FR2509077A1 (fr) 1981-07-03 1981-07-03 Dispositif resonnant a lame vibrante excitee par un transducteur piezoelectrique et son application au suivi radial d'une piste d'un support d'information optique

Country Status (1)

Country Link
FR (1) FR2509077A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4617503A (en) * 1985-11-26 1986-10-14 General Electric Company Active datum for coordinate reference in a numerically controlled machine tool

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2224828A1 (fr) * 1973-04-09 1974-10-31 Thomson Brandt
US3985952A (en) * 1974-02-04 1976-10-12 Zenith Radio Corporation Elasto-optic device for spot wobble in a video disc player
FR2260163B1 (fr) * 1974-02-04 1979-08-03 Thomson Brandt
NL7600479A (nl) * 1976-01-19 1977-07-21 Philips Nv Automatisch optisch focusseersysteem.
FR2375690A1 (fr) * 1976-12-23 1978-07-21 Thomson Brandt Dispositif de detection de l'erreur de suivi radial pour lecteurs et enregistreurs optiques

Also Published As

Publication number Publication date
FR2509077A1 (fr) 1983-01-07

Similar Documents

Publication Publication Date Title
DE3141098C2 (fr)
DE3139533C2 (fr)
DE3203424C2 (fr)
DE3211502C2 (fr)
CH667362GA3 (fr)
DE3138365C2 (fr)
DE3213849C2 (fr)
CH655675B (fr)
DE3119811C2 (fr)
DE3213760C2 (fr)
DE3213162C2 (fr)
FR2498241B1 (fr)
DE3127431C2 (fr)
FR2498299B1 (fr)
CH655514B (fr)
FR2498469B3 (fr)
FR2498686B1 (fr)
DE3217262C2 (fr)
DE3101050C2 (fr)
DE3107557C2 (fr)
DE3146725C2 (fr)
FR2498387B1 (fr)
DE3145301C2 (fr)
DE3124160C2 (fr)
DE3118626C2 (fr)

Legal Events

Date Code Title Description
ST Notification of lapse