GB1372421A - Information record and apparatus for producing same - Google Patents

Information record and apparatus for producing same

Info

Publication number
GB1372421A
GB1372421A GB4963571A GB4963571A GB1372421A GB 1372421 A GB1372421 A GB 1372421A GB 4963571 A GB4963571 A GB 4963571A GB 4963571 A GB4963571 A GB 4963571A GB 1372421 A GB1372421 A GB 1372421A
Authority
GB
United Kingdom
Prior art keywords
tape
recording
oct
information record
producing same
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
GB4963571A
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of GB1372421A publication Critical patent/GB1372421A/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
    • 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
    • G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
    • G11B7/0032—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent for moving-picture soundtracks, i.e. cinema

Abstract

1372421 Recording and playback RCA CORPORATION 26 Oct 1971 [27 Oct 1970] 49635/71 Heading G5R A transparent tape, Fig. 3 or 4, having periodic depth variations extending across it to form a diffraction grating carries a recording of an information, e.g. audio, signal in the form of a constant-depth width-modulated portion 39 or 41. The initial recording is effected by means of a pulsed laser 10, Fig. 1, a chevron modulator 15, and a moving tape 23 coated with a photoresist material which is processed and used to form a metal master tape for pressing duplicate record tapes as described in Specification 1,326,767. A pressure-sensitive dye may be used to produce a difference in transparency between the two portions of the record tape.
GB4963571A 1970-10-27 1971-10-26 Information record and apparatus for producing same Expired GB1372421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8435770A 1970-10-27 1970-10-27

Publications (1)

Publication Number Publication Date
GB1372421A true GB1372421A (en) 1974-10-30

Family

ID=22184447

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4963571A Expired GB1372421A (en) 1970-10-27 1971-10-26 Information record and apparatus for producing same

Country Status (8)

Country Link
JP (1) JPS4917723B1 (en)
AU (1) AU3435871A (en)
BE (1) BE774576A (en)
DE (1) DE2153100C3 (en)
ES (1) ES396427A1 (en)
FR (1) FR2113274A5 (en)
GB (1) GB1372421A (en)
NL (1) NL7114704A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2954528A1 (en) * 2009-12-17 2011-06-24 Univ La Rochelle METHOD AND DEVICE FOR RESTITUTION OF A SOUND SIGNAL AND / OR A SOUND TRACK

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866187A (en) * 1973-07-02 1975-02-11 Philips Corp Method of recording and reproducing information in ferroelastic metals
JPS5298729U (en) * 1976-01-22 1977-07-26
EP0282611A1 (en) * 1987-03-16 1988-09-21 Moshe Guez Method and apparatus for writing information on processed photographic film

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2954528A1 (en) * 2009-12-17 2011-06-24 Univ La Rochelle METHOD AND DEVICE FOR RESTITUTION OF A SOUND SIGNAL AND / OR A SOUND TRACK
EP2341390A1 (en) * 2009-12-17 2011-07-06 Universite De La Rochelle Method of and device for reproduction of an audio signal and/or an audio track

Also Published As

Publication number Publication date
JPS4917723B1 (en) 1974-05-02
BE774576A (en) 1972-02-14
ES396427A1 (en) 1974-05-01
DE2153100A1 (en) 1972-05-04
NL7114704A (en) 1972-05-02
AU3435871A (en) 1973-04-12
DE2153100B2 (en) 1973-07-26
FR2113274A5 (en) 1972-06-23
DE2153100C3 (en) 1974-02-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees