GB505057A - Improvements in or relating to television or telecinema transmitters - Google Patents

Improvements in or relating to television or telecinema transmitters

Info

Publication number
GB505057A
GB505057A GB3811/38A GB381138A GB505057A GB 505057 A GB505057 A GB 505057A GB 3811/38 A GB3811/38 A GB 3811/38A GB 381138 A GB381138 A GB 381138A GB 505057 A GB505057 A GB 505057A
Authority
GB
United Kingdom
Prior art keywords
voltage
signals
resistance
regulator
biassing
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
GB3811/38A
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of GB505057A publication Critical patent/GB505057A/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
    • H04N5/14—Picture signal circuitry for video frequency region

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Electron Tubes For Measurement (AREA)

Abstract

505,057. Television. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Feb. 7, 1938, No. 3811. Convention date, Feb. 8, 1937. [Class 40 (iii)] A periodic voltage is so applied to an automatic regulator of the amplifi. cation of image signals relatively to synchronizing signals that the regulator is maintained inoperative until near the end of each scanning line and thus greater amplification of most of the picture signals is obtained without prejudicing the separation of the synchronizing signals at the receiver. The periodic voltage is obtained from the synchronizing signal and is supplemented by a fixed voltage 9. The regulator feeds back periodically a biassing voltage to one or more valves of the amplifier of the image signals. This biassing voltage is derived from current passing through a resistance 8 from a rectifier 6 in proportion to the signals in a resistance 11 during the period when the periodic voltage 5 is sufficiently high. The biassing voltage is smoothed by a condenser 7 across the resistance 8. Specification 407,322 is referred to.
GB3811/38A 1937-02-08 1938-02-07 Improvements in or relating to television or telecinema transmitters Expired GB505057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR505057X 1937-02-08

Publications (1)

Publication Number Publication Date
GB505057A true GB505057A (en) 1939-05-04

Family

ID=8908221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3811/38A Expired GB505057A (en) 1937-02-08 1938-02-07 Improvements in or relating to television or telecinema transmitters

Country Status (1)

Country Link
GB (1) GB505057A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630486A (en) * 1949-01-26 1953-03-03 Bell Telephone Labor Inc Low-frequency restoration circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630486A (en) * 1949-01-26 1953-03-03 Bell Telephone Labor Inc Low-frequency restoration circuit

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