GB874676A - Improvements in and relating to television apparatus - Google Patents

Improvements in and relating to television apparatus

Info

Publication number
GB874676A
GB874676A GB908958A GB908958A GB874676A GB 874676 A GB874676 A GB 874676A GB 908958 A GB908958 A GB 908958A GB 908958 A GB908958 A GB 908958A GB 874676 A GB874676 A GB 874676A
Authority
GB
United Kingdom
Prior art keywords
paths
cathode
ray tube
scanning device
scanned
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
GB908958A
Inventor
John Lewis Edwin Baldwin
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.)
Bush and Rank Cintel Ltd
Original Assignee
Bush and Rank Cintel Ltd
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 Bush and Rank Cintel Ltd filed Critical Bush and Rank Cintel Ltd
Priority to GB908958A priority Critical patent/GB874676A/en
Publication of GB874676A publication Critical patent/GB874676A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/36—Scanning of motion picture films, e.g. for telecine

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Image Input (AREA)

Abstract

874,676. Television. BUSH & RANK CINTEL Ltd. May 27, 1958, No. 9089/58. Class 4(3) Television apparatus comprises a plurality of simultaneously operable image forming optical paths 3, 4 between a single point in a scanning device I and a like plurality of image planes 7, 8 to -which said paths are respectively normal, and means for causing the optical axis of the scanning device to coincide selectively with any of the paths. In the embodiment illustrated, the scanning device comprises a cathode-ray tube flying-spot scanner and kinematograph films are located in planes 7 and 8, the cathode-ray tube being mounted so as to pivot about an axis lying in the effective screen surface so that it may be moved between positions B and C where the scanned area is disposed perpendicular to the respective optical paths. Both paths remain operative, that to which scanner is perpendicular being free of optical distortion whilst the other is subject to keystone distortion and loss of edge focus. The apparatus permits a changeover of transmission from one kinematograph film to another, the film for transmission, being scanned in the distortion free manner whilst the other is scanned in a distorted manner but with sufficient accuracy for preview and monitoring purposes. The films are viewed by photo-electric cells 9 and 10 whose outputs are applied to a transmitter 15 and monitor 16 through change-over switches 13, 14 which are coupled to the mechanism for angularly displacing cathode-ray tube 1 and arranged so that the "undistorted" signal is always applied to the transmitter and the "distorted" signal to the monitor. In a second embodiment of the invention, Fig. 2 (not shown), the cathode-ray tube flying-spot scanner is replaced by a camera tube and the photo-electric cells by light sources. Reference is also made (without giving details) to an arrangement for use with images reflecting rather than transmitting light. One or two additional optical paths may be provided in a plane perpendicular to those shown in Fig. 1.
GB908958A 1958-03-21 1958-03-21 Improvements in and relating to television apparatus Expired GB874676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB908958A GB874676A (en) 1958-03-21 1958-03-21 Improvements in and relating to television apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB908958A GB874676A (en) 1958-03-21 1958-03-21 Improvements in and relating to television apparatus

Publications (1)

Publication Number Publication Date
GB874676A true GB874676A (en) 1961-08-10

Family

ID=9865143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB908958A Expired GB874676A (en) 1958-03-21 1958-03-21 Improvements in and relating to television apparatus

Country Status (1)

Country Link
GB (1) GB874676A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510657A (en) * 1967-03-30 1970-05-05 Rca Corp Optical multiplexing apparatus
US3751593A (en) * 1972-02-14 1973-08-07 Gte Sylvania Inc Multiplex image accommodation system
FR2569923A1 (en) * 1984-09-03 1986-03-07 Simon Jean Device for instantaneously displaying slides on a television screen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510657A (en) * 1967-03-30 1970-05-05 Rca Corp Optical multiplexing apparatus
US3751593A (en) * 1972-02-14 1973-08-07 Gte Sylvania Inc Multiplex image accommodation system
FR2569923A1 (en) * 1984-09-03 1986-03-07 Simon Jean Device for instantaneously displaying slides on a television screen

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