GB297078A - Improvements in or relating to television systems - Google Patents

Improvements in or relating to television systems

Info

Publication number
GB297078A
GB297078A GB8351/28A GB835128A GB297078A GB 297078 A GB297078 A GB 297078A GB 8351/28 A GB8351/28 A GB 8351/28A GB 835128 A GB835128 A GB 835128A GB 297078 A GB297078 A GB 297078A
Authority
GB
United Kingdom
Prior art keywords
film
phonographic
signals
television
record
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
GB8351/28A
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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
Priority to US219404A priority Critical patent/US2166247A/en
Application filed by Electrical Research Products Inc filed Critical Electrical Research Products Inc
Publication of GB297078A publication Critical patent/GB297078A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/84Television signal recording using optical recording
    • H04N5/843Television signal recording using optical recording on film
    • H04N5/846Television signal recording using optical recording on film the film moving intermittently

Abstract

297,078. Electrical Research Products, Inc., (Assignees of Hartley, R. V. L., and Ives, H. E.). Sept. 14, 1927, [Convention date]. Television of back-ground details is improved, and increased illumination is obtained, by taking a kinematograph film of the scene to be transmitted and causing the film to control the television signals, these processes being cor.ducted in a continuous train. In addition or alternatively a photographic process is interposed at the television receiving station. The picture signals may be accompanied by signals derived from a phonographic film. In the transmitting apparatus, Fig. 2, the film 99 passes from a spool 103 through (a) a kinematograph camera 101, in which its movement is intermittent. (b) A sound recording device 110, in which its movement is continuous ; this comprises a source of light 113, a lens system 114, 115, and a light-valve 111 controlled by the microphone currents. (c) Developing and fixing tanks 121, 122; washing and drying arrangements may also be included in the apparatus if desired. (d) A kinematographic projector 130 providing intermittent movement; light parses from a source 136 through optical systems 137, 138, through the film 99 while still wet, and through a scanning disc 155 to a light sensitive cell 160 which controls the outgoing television signals. (e) A transmitter 140 for phonographic signals; light passes from a source 143 through an optical system 144 and the phonographic record on the film 99 to a light sensitive cell 170 which controls the out-going phonographic signals. (f) A storage spool 180 or other means for for disposing of the film. The receiving apparatus (Fig. 3, not shown) is generally similar to the transmitting apparatus and comprises means for passing a film through (a) a television receiver of known type adapted to project the signalled picture on to the film. (b) A sound recorder similar to the apparatus 110 for projecting the signalled sound-record on to the same film. (c) Developing and fixing tanks. (d) A kinematograph projector of known type for throwing the picture on to a screen visible to an audience. (e) Phonographic, apparatus similar to that shown at 140 for controlling a loud-speaker, and (f) Means for storing or otherwise disposing of the film. The receiving apparatus may also comprise (right-hand side of Fig. 1, not shown) switching arrangements whereby the television, phonographic and synchronizing currents can be diverted from the photographic receiver just described and applied to a television receiver of the known type which comprises a bank of lamps adapted to be successively illuminated under the control of a rotary distributer, and to an associated loud-speaker. The phonographic and kinematographic records may alternatively be impreseed on different films. In cases where the television signals but not the phonographic signals are subjected to the delay involved in developing the film, means are provided for delaying the reproduction of the sound. These may comprise (a) a telegraphone having an endless wire on which the sound record is continuously impressed, the record being erased after reproduction; or (b) a phonograph record of the disc type associated with recording and reproducing styli (Fig. 4, not shown). In cases where the photographic process is used at the transmitter only, the distortion which occurs may be corrected by the use of an amplifier having a suitable characteristic.
GB8351/28A 1927-09-14 1928-03-19 Improvements in or relating to television systems Expired GB297078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US219404A US2166247A (en) 1927-09-14 1927-09-14 Electro-optical transmission system

Publications (1)

Publication Number Publication Date
GB297078A true GB297078A (en) 1929-06-19

Family

ID=22819131

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8351/28A Expired GB297078A (en) 1927-09-14 1928-03-19 Improvements in or relating to television systems

Country Status (3)

Country Link
US (1) US2166247A (en)
FR (1) FR654754A (en)
GB (1) GB297078A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137010A (en) * 1934-06-09 1938-11-15 Rca Corp Television system
US2611027A (en) * 1948-07-10 1952-09-16 Jr John Hays Hammond Television still-picture transmitting and recording system
US2856829A (en) * 1955-12-07 1958-10-21 Orlando Carl Apparatus for making photographic reproductions for projection

Also Published As

Publication number Publication date
FR654754A (en) 1929-04-10
US2166247A (en) 1939-07-18

Similar Documents

Publication Publication Date Title
US2072527A (en) Multiple sound and picture recording and projection system
GB297078A (en) Improvements in or relating to television systems
US1965173A (en) Apparatus for and method of synchronously recording and reproducing sounds and pictures
US1891738A (en) Talking movie
US2144738A (en) Recording of pictures and sound
US2952737A (en) Magnetogram system and apparatus for picture and sound recording
US2049384A (en) System for television and sound
US2420798A (en) Apparatus for and process of taking and showing sound motion pictures
GB353471A (en) Improvements in or relating to television and other electrooptical systems for reproducing pictures and the like at a distance
US1971446A (en) Home talking movie combination
US3848978A (en) Analog information storage and retrieval system
GB346456A (en) Method of and apparatus for the photo-telegraphic distant transmission of talking films
US1993929A (en) Sound recording and reproducing
US3002055A (en) Single film rerecording system
US2871287A (en) Photographic reproduction method and apparatus
US2078459A (en) Combined television and audio broadcasting
US1996449A (en) Recording system
JPS5859682A (en) Video signal processing device
US2093423A (en) Sound recording and reproducing apparatus
US1946206A (en) Sound motion picture
GB320900A (en) Systems for recording and reproducing pictures and sound
GB379737A (en) Improved method and apparatus for recording and reproducing moving pictures and accompanying sound
GB274118A (en) Improvements in or connected with sound recording and/or reproducing
US2725784A (en) Motion picture and sound apparatus
GB720334A (en) Video signal recording and image reproducing apparatus