GB354252A - Improvements in or relating to picture and the like transmission systems - Google Patents

Improvements in or relating to picture and the like transmission systems

Info

Publication number
GB354252A
GB354252A GB13180/30A GB1318030A GB354252A GB 354252 A GB354252 A GB 354252A GB 13180/30 A GB13180/30 A GB 13180/30A GB 1318030 A GB1318030 A GB 1318030A GB 354252 A GB354252 A GB 354252A
Authority
GB
United Kingdom
Prior art keywords
picture
beams
reflected
cells
photo
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
GB13180/30A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB354252A publication Critical patent/GB354252A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/1911—Simultaneously or substantially simultaneously scanning picture elements on more than one main scanning line, e.g. scanning in swaths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Lenses (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

354,252. Television and copying telegraphy. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Ranger, R. H. ; 574, Parker Street, Newark, New Jersey, U.S.A.) April 29, 1930, No. 13180. Convention date, May 3, 1929. [Class 40 (iii).] In a picture transmission system for multiplex working or for the simultaneous transmission of separate areas, light beams from sources 5 are reflected from adjacent areas at 11 on the picture surface 3, mounted on a rotating drum 1, as independent beams 53 .. 59 which pass through separate adjustable openings 45 .. 51 of a diaphragm 15. The separated beams are reflected from the surface 63 of a prism 61, and the outer beams 53<1>, 59<1> are reflected by prisms 67, 73 and 75, 89 on to photo-electric cells 79, 93. The inner beams 55<1>, 57<1> are deflected by prisms 69, 71 and directed to photo-electric cells 83, 87. The light beams may be chopped at different frequencies by a disc having a number of tracks of reflecting surfaces before reaching the cells 79 .. 93. The separate cells may be replaced by a pair of elongated photo-electric cells which are arranged to receive the light reflected from all the paths on the chopping disc. The picture may be scanned by moving the cylinder 1 or the light sources 5 in a longitudinal direction, and after each longitudinal scanning rotating the cylinder by an amount corresponding to the number of lines simultaneously scanned. For television transmission the drum 1 is replaced by a flat surface, and the picture may be scanned by a lens disc arranged to provide a number of distinct scanning rays. Specification 340,886 is referred to.
GB13180/30A 1929-05-03 1930-04-29 Improvements in or relating to picture and the like transmission systems Expired GB354252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US354252XA 1929-05-03 1929-05-03

Publications (1)

Publication Number Publication Date
GB354252A true GB354252A (en) 1931-07-29

Family

ID=21882605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13180/30A Expired GB354252A (en) 1929-05-03 1930-04-29 Improvements in or relating to picture and the like transmission systems

Country Status (2)

Country Link
US (1) US1807011A (en)
GB (1) GB354252A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651463A (en) * 1946-01-11 1953-09-08 Philip H Allen Optical operation control device
USRE25468E (en) * 1953-08-27 1963-10-29 cross r
US3441715A (en) * 1961-05-15 1969-04-29 Ncr Co Sensing means
DE2518370B2 (en) * 1975-04-25 1979-04-19 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Method and device for optoelectronic scanning, transmission and re-recording of original images, in particular facsimile transmission system
US4219850A (en) * 1978-02-16 1980-08-26 The Mead Corporation Optical encoder
JPS58123540A (en) * 1982-01-19 1983-07-22 Dainippon Screen Mfg Co Ltd Original image scanning method in image scanning recording

Also Published As

Publication number Publication date
US1807011A (en) 1931-05-26

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