GB445912A - Improvements in or relating to television and like systems - Google Patents

Improvements in or relating to television and like systems

Info

Publication number
GB445912A
GB445912A GB1834735A GB1834735A GB445912A GB 445912 A GB445912 A GB 445912A GB 1834735 A GB1834735 A GB 1834735A GB 1834735 A GB1834735 A GB 1834735A GB 445912 A GB445912 A GB 445912A
Authority
GB
United Kingdom
Prior art keywords
partial scan
exposed
drum
apertures
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
GB1834735A
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
Publication of GB445912A publication Critical patent/GB445912A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H04N5/073—Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Television Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Picture Signal Circuits (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

445,912. Television. BROWNE, C. O., 29, Monk's Drive, West Acton, London. Oct. 18, 1934, No. 18347/35. Divided application. [Class 40 (iii)] The synchronizing signals in an interlaced scanning system, in which a non-integral number of lines are scanned in each partial scan, are produced by the line-scanning mechanism 8. At the end of each partial scan, apertures 11, 12 are exposed by openings 17, 16 in a rotating shutter 13 and their image is swept over a photo-electric cell by the mirror drum. At the end of the first partial scan the aperture 11 is exposed first by the leading-edge 22 of the opening 17, and at the end of the second partial scan the aperture 12 is exposed first by the leading-edge 20. According to a modification, shown dotted, a disc 24 is driven at a speed, and in a direction, which compensates the movement of the drum due to the rotation of the carcase of the exciting motor-generator 6 by a motor 9. The disc carries a lamp 25, from which light is reflected by a mirror 23 on the drum 8 to a reflecting prism 26 and thence to a photo-electric cell 30. A mask with the two synchronizing apertures is placed on the vertical face of the prism. Specification 438,905, [Group XX], is referred to.
GB1834735A 1934-08-31 1934-10-18 Improvements in or relating to television and like systems Expired GB445912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2518134A GB448031A (en) 1934-08-31 1934-08-31 Improvements in or relating to synchronising means for television and like purposes

Publications (1)

Publication Number Publication Date
GB445912A true GB445912A (en) 1936-04-20

Family

ID=10223544

Family Applications (4)

Application Number Title Priority Date Filing Date
GB1834835A Expired GB448066A (en) 1934-08-31 1934-08-31 Improvements in or relating to synchronising means for television and like purposes
GB2518134A Expired GB448031A (en) 1934-08-31 1934-08-31 Improvements in or relating to synchronising means for television and like purposes
GB829936A Expired GB448097A (en) 1934-08-31 1934-10-18 Improvements in or relating to film television
GB1834735A Expired GB445912A (en) 1934-08-31 1934-10-18 Improvements in or relating to television and like systems

Family Applications Before (3)

Application Number Title Priority Date Filing Date
GB1834835A Expired GB448066A (en) 1934-08-31 1934-08-31 Improvements in or relating to synchronising means for television and like purposes
GB2518134A Expired GB448031A (en) 1934-08-31 1934-08-31 Improvements in or relating to synchronising means for television and like purposes
GB829936A Expired GB448097A (en) 1934-08-31 1934-10-18 Improvements in or relating to film television

Country Status (3)

Country Link
DE (2) DE754289C (en)
FR (1) FR794244A (en)
GB (4) GB448066A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE756078C (en) * 1935-04-24 1953-03-16 Emi Ltd Circuit arrangement for generating a pulse train with at least two groups of pulses of different frequencies
DE1022262B (en) * 1937-01-20 1958-01-09 Loewe Opta Ag Synchronizing arrangement for television broadcasts using the interlaced method
DE743022C (en) * 1937-06-21 1943-12-16 Opta Radio Ag Arrangement for controlling the line train deflection generator when receiving television broadcasts according to the interlaced process
DE1030872B (en) * 1937-06-21 1958-05-29 Loewe Opta Ag Arrangement for generating alternate picture characters interrupted in the rhythm of the line pulses
GB521984A (en) * 1938-11-30 1940-06-05 Gen Electric Co Ltd Improvements in apparatus for receiving television
DE742656C (en) * 1939-01-25 1943-12-10 Fernseh Gmbh Arrangement for filtering out pulses from a pulse mixture

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR742671A (en) * 1931-09-30 1933-03-13
DE707990C (en) * 1933-06-01 1941-07-09 Rca Corp Method for transmitting the line and line train pulses in the interlaced method for television purposes
FR773485A (en) * 1933-06-01 1934-11-19 Rca Corp Improvements to television systems
BE434568A (en) * 1934-05-29
CH181929A (en) * 1934-05-29 1936-01-15 Rca Corp Device for the transmission of fixed or moving images, in which a cathode ray tube is used and synchronizing pulses are transmitted together with the image currents, which are distinguished as line and image pulses.

Also Published As

Publication number Publication date
FR794244A (en) 1936-02-11
DE754289C (en) 1953-02-02
GB448097A (en) 1936-06-02
GB448066A (en) 1936-06-02
GB448031A (en) 1936-06-02
DE916178C (en) 1954-08-05

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