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GB1461028A - Recording and reading information - Google Patents

Recording and reading information

Info

Publication number
GB1461028A
GB1461028A GB2914775A GB2914775A GB1461028A GB 1461028 A GB1461028 A GB 1461028A GB 2914775 A GB2914775 A GB 2914775A GB 2914775 A GB2914775 A GB 2914775A GB 1461028 A GB1461028 A GB 1461028A
Authority
GB
United Kingdom
Prior art keywords
recording
sinusoidally
playback
july
oscillating mirror
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
GB2914775A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1461028A publication Critical patent/GB1461028A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/7605—Television signal recording on discs or drums
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/89—Television signal recording using holographic recording

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

1461028 Optical recording and playback ROBERT BOSCH GmbH 10 July 1975 [10 July 1974] 29147/75 Heading G5R Tracks extending transverse to the direction of motion of a record carrier, e.g. a tape 8 or a disc (Fig. 5, not shown), are scanned for recording or playback by a light beam which oscillates symmetrically across the carrier. As shown, Fig. 1, two modulated laser beams are directed by two mirrors 7, 7<SP>1</SP> which oscillate sinusoidally 180 degrees out of phase with each other and the beams are blocked alternately by the modulators 4, 4<SP>1</SP> to record a succession of parallel transverse tracks (Fig. 2, not shown). Alternatively, Fig. 3, a single beam is deflected transversely by a first sinusoidally oscillating mirror 12 and longitudinally at double the frequency by a second sinusoidally oscillating mirror 13.
GB2914775A 1974-07-10 1975-07-10 Recording and reading information Expired GB1461028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2433070A DE2433070A1 (en) 1974-07-10 1974-07-10 SYSTEM FOR RECORDING AND / OR SCANNING INFORMATION

Publications (1)

Publication Number Publication Date
GB1461028A true GB1461028A (en) 1977-01-13

Family

ID=5920143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2914775A Expired GB1461028A (en) 1974-07-10 1975-07-10 Recording and reading information

Country Status (4)

Country Link
DE (1) DE2433070A1 (en)
FR (1) FR2278135A1 (en)
GB (1) GB1461028A (en)
NL (1) NL7508076A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5412635A (en) * 1991-09-27 1995-05-02 Pioneer Electronic Corporation Optical disk with signal pit recording format, method of recording same and optical pickup

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074085A (en) * 1976-03-31 1978-02-14 Eli S. Jacobs Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks
DE2710166C2 (en) * 1977-03-09 1984-09-13 Philips Patentverwaltung Gmbh, 2000 Hamburg Mechanically addressed optical memory
JPS55111917A (en) * 1979-02-22 1980-08-29 Toshiba Corp Reciprocating photo scanner
JPS5843224A (en) * 1981-09-10 1983-03-12 Mitsui Mining Co Ltd Dry type flue gas desulfurization and denitration method
FR2602364A1 (en) * 1986-07-31 1988-02-05 Michel Maksymowicz Method of recording and reading information on a medium, and information medium for implementing this method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5412635A (en) * 1991-09-27 1995-05-02 Pioneer Electronic Corporation Optical disk with signal pit recording format, method of recording same and optical pickup

Also Published As

Publication number Publication date
FR2278135B3 (en) 1978-02-24
DE2433070A1 (en) 1976-01-29
NL7508076A (en) 1976-01-13
FR2278135A1 (en) 1976-02-06

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Legal Events

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