GB322796A - Improved means and methods for recording and reproducing sound - Google Patents

Improved means and methods for recording and reproducing sound

Info

Publication number
GB322796A
GB322796A GB1642828A GB1642828A GB322796A GB 322796 A GB322796 A GB 322796A GB 1642828 A GB1642828 A GB 1642828A GB 1642828 A GB1642828 A GB 1642828A GB 322796 A GB322796 A GB 322796A
Authority
GB
United Kingdom
Prior art keywords
sound
passing
controlled
light
recording
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
GB1642828A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1642828A priority Critical patent/GB322796A/en
Publication of GB322796A publication Critical patent/GB322796A/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

Abstract

322,796. Neale, J. June 6, 1928. Transmitters in which a sound-controlled light beam acts on a photo-electric element. - The fourth Provisional Specification describes an apparatus which is stated to be of advantage in the reproduction of sound, and is similar to the sound-recording apparatus shown in Fig. 3 of the complete Specification. A beam of light is controlled by passing it through a fixed grid, and, after reflection from a vibratory mirror, passing it through another grid. The slots in the two grids are so arranged with respect to a central line that light is prevented from passing through at one side of this line when the maximum amount can pass through at the other side. The beam, controlled in this manner, falls upon selenium cells arranged in a Wheatstone bridge circuit as described in Specification 307,086. One of the grids may be formed upon the mirror as a series of parallel strips.
GB1642828A 1928-06-06 1928-06-06 Improved means and methods for recording and reproducing sound Expired GB322796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1642828A GB322796A (en) 1928-06-06 1928-06-06 Improved means and methods for recording and reproducing sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1642828A GB322796A (en) 1928-06-06 1928-06-06 Improved means and methods for recording and reproducing sound

Publications (1)

Publication Number Publication Date
GB322796A true GB322796A (en) 1929-12-06

Family

ID=10077132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1642828A Expired GB322796A (en) 1928-06-06 1928-06-06 Improved means and methods for recording and reproducing sound

Country Status (1)

Country Link
GB (1) GB322796A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742170C (en) * 1935-11-19 1943-11-24 Zeiss Ikon Ag Circuit for the coupling of photocells working in push-pull mode to an optical sound reproduction amplifier
DE753763C (en) * 1937-04-09 1954-04-29 Universum Film A G Method for scanning optical sound recordings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742170C (en) * 1935-11-19 1943-11-24 Zeiss Ikon Ag Circuit for the coupling of photocells working in push-pull mode to an optical sound reproduction amplifier
DE753763C (en) * 1937-04-09 1954-04-29 Universum Film A G Method for scanning optical sound recordings

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