GB594164A - Improvements relating to the recording of sound - Google Patents

Improvements relating to the recording of sound

Info

Publication number
GB594164A
GB594164A GB1298145A GB1298145A GB594164A GB 594164 A GB594164 A GB 594164A GB 1298145 A GB1298145 A GB 1298145A GB 1298145 A GB1298145 A GB 1298145A GB 594164 A GB594164 A GB 594164A
Authority
GB
United Kingdom
Prior art keywords
sound
doubly
record
light
refractive material
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
GB1298145A
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
Filing date
Publication date
Application filed by Ferranti PLC filed Critical Ferranti PLC
Publication of GB594164A publication Critical patent/GB594164A/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
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

594,164. Light, modulating. FERRANTI, Ltd., and TAYLOR, M. K. May 24, 1945, No. 12981. [Class 40 (iii)] [Also in Group XXXVIII] Sound is reproduced by passing a record of doubly-refractive material between polariser and analyser prisins, either crossed or parallel, through which a beam of light of constant intensity is directed on to a photo-electric cell, associated with an amplifier and a loudspeaker. The sound is recorded initially by forming a track on a moving sheet of doubly-refractive material such as cellulose acetate either by application of pressure by a stylus or by highfrequency heating controlled by the sound. The record may be in the form of a ribbon, a disc or a cylinder.
GB1298145A 1945-05-24 Improvements relating to the recording of sound Expired GB594164A (en)

Publications (1)

Publication Number Publication Date
GB594164A true GB594164A (en) 1947-11-04

Family

ID=1723511

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1298145A Expired GB594164A (en) 1945-05-24 Improvements relating to the recording of sound

Country Status (1)

Country Link
GB (1) GB594164A (en)

Similar Documents

Publication Publication Date Title
GB594164A (en) Improvements relating to the recording of sound
GB763869A (en) Improvements in or relating to magnetic recording system
GB935230A (en) Improvements in or relating to magnetic recording and reproducing systems
JPS52145005A (en) Highly densed recording signals reproduction device
JPS52153403A (en) Address record reproduction
GB808096A (en) Improvements in or relating to recording machines
GB618349A (en) Improvements relating to the recording of sound
GB1101512A (en) Improvements in or relating to disc recording
JPS5265406A (en) Inforamtion reproduction device
GB832580A (en) Improvements in or relating to reading head for magnetic recordings
GB963219A (en) Improvements in and relating to sound recording and reproducing apparatus
GB288711A (en) Improvements in sound reproducing apparatus
JPS5225601A (en) Detecting system of recording signals in disc records
GB1038593A (en) Process for recording and playback of sound tracks by photographic or optical means
JPS525240A (en) Signal compensator of high frequency amplifier
JPS52137238A (en) Gain control circuit
JPS5398845A (en) Heat sensitive recorder
SU90901A1 (en) Sound Recording Method
CA436956A (en) Phonograph record cueing method and means
GB686706A (en) Improvements in or relating to recording reproducing apparatus
CA424970A (en) Record for recording and reproducing sound
GB618976A (en) Improvements in or relating to photo-electric devices
GB709022A (en) Improvements in or relating to disk shaped carriers for magnetic sound recordings
JPS51130206A (en) Magnetic recording device
JPS52153663A (en) Playback apparatus fo disc form recording media