FR1228111A - Optical method of reading discs and its use - Google Patents

Optical method of reading discs and its use

Info

Publication number
FR1228111A
FR1228111A FR786200A FR786200A FR1228111A FR 1228111 A FR1228111 A FR 1228111A FR 786200 A FR786200 A FR 786200A FR 786200 A FR786200 A FR 786200A FR 1228111 A FR1228111 A FR 1228111A
Authority
FR
France
Prior art keywords
optical method
reading discs
discs
reading
optical
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
FR786200A
Other languages
French (fr)
Inventor
Jean Paget
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 filed Critical
Priority to FR786200A priority Critical patent/FR1228111A/en
Application granted granted Critical
Publication of FR1228111A publication Critical patent/FR1228111A/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
FR786200A 1959-02-10 1959-02-10 Optical method of reading discs and its use Expired FR1228111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR786200A FR1228111A (en) 1959-02-10 1959-02-10 Optical method of reading discs and its use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR786200A FR1228111A (en) 1959-02-10 1959-02-10 Optical method of reading discs and its use

Publications (1)

Publication Number Publication Date
FR1228111A true FR1228111A (en) 1960-08-26

Family

ID=8711024

Family Applications (1)

Application Number Title Priority Date Filing Date
FR786200A Expired FR1228111A (en) 1959-02-10 1959-02-10 Optical method of reading discs and its use

Country Status (1)

Country Link
FR (1) FR1228111A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026517A1 (en) * 1979-09-27 1981-04-08 Koninklijke Philips Electronics N.V. Record carrier containing information in an optically readable information structure, as well as apparatus for reading said carrier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026517A1 (en) * 1979-09-27 1981-04-08 Koninklijke Philips Electronics N.V. Record carrier containing information in an optically readable information structure, as well as apparatus for reading said carrier

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