GB1120720A - Sound recording apparatus - Google Patents

Sound recording apparatus

Info

Publication number
GB1120720A
GB1120720A GB1845567A GB1845567A GB1120720A GB 1120720 A GB1120720 A GB 1120720A GB 1845567 A GB1845567 A GB 1845567A GB 1845567 A GB1845567 A GB 1845567A GB 1120720 A GB1120720 A GB 1120720A
Authority
GB
United Kingdom
Prior art keywords
sound recording
april
output pulses
recording apparatus
division
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
GB1845567A
Other languages
English (en)
Inventor
Oran Taylor Casebeer
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1120720A publication Critical patent/GB1120720A/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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G11B20/06—Angle-modulation recording or reproducing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
GB1845567A 1966-04-25 1967-04-21 Sound recording apparatus Expired GB1120720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54514166A 1966-04-25 1966-04-25

Publications (1)

Publication Number Publication Date
GB1120720A true GB1120720A (en) 1968-07-24

Family

ID=24175030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1845567A Expired GB1120720A (en) 1966-04-25 1967-04-21 Sound recording apparatus

Country Status (2)

Country Link
FR (1) FR1520103A (fr)
GB (1) GB1120720A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194115A2 (fr) 1985-02-28 1986-09-10 Symbol Technologies, Inc. Tête de lecture portable à diode laser
US5486944A (en) * 1989-10-30 1996-01-23 Symbol Technologies, Inc. Scanner module for symbol scanning system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194115A2 (fr) 1985-02-28 1986-09-10 Symbol Technologies, Inc. Tête de lecture portable à diode laser
EP0194115A3 (en) * 1985-02-28 1987-08-12 Symbol Technologies, Inc. Portable laser diode scanning head
US4825057A (en) * 1985-02-28 1989-04-25 Symbol Technologies, Inc. Portable laser diode scanning head
EP0367299A2 (fr) 1985-02-28 1990-05-09 Symbol Technologies, Inc. Tête de lecture portable à diode laser
EP0367299A3 (en) * 1985-02-28 1990-05-23 Symbol Technologies, Inc. Portable laser diode scanning head
US5486944A (en) * 1989-10-30 1996-01-23 Symbol Technologies, Inc. Scanner module for symbol scanning system

Also Published As

Publication number Publication date
FR1520103A (fr) 1968-04-05

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