GB724941A - Improvements in or relating to contrast control-circuit arrangements for use in television receivers - Google Patents

Improvements in or relating to contrast control-circuit arrangements for use in television receivers

Info

Publication number
GB724941A
GB724941A GB4541/53A GB454153A GB724941A GB 724941 A GB724941 A GB 724941A GB 4541/53 A GB4541/53 A GB 4541/53A GB 454153 A GB454153 A GB 454153A GB 724941 A GB724941 A GB 724941A
Authority
GB
United Kingdom
Prior art keywords
valve
potentiometer
feb
video
video signal
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
GB4541/53A
Other languages
English (en)
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB724941A publication Critical patent/GB724941A/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
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/52—Automatic gain control
    • H04N5/53—Keyed automatic gain control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
GB4541/53A 1952-02-21 1953-02-18 Improvements in or relating to contrast control-circuit arrangements for use in television receivers Expired GB724941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL724941X 1952-02-21

Publications (1)

Publication Number Publication Date
GB724941A true GB724941A (en) 1955-02-23

Family

ID=19817768

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4541/53A Expired GB724941A (en) 1952-02-21 1953-02-18 Improvements in or relating to contrast control-circuit arrangements for use in television receivers

Country Status (6)

Country Link
US (1) US2820093A (US07122603-20061017-C00045.png)
BE (1) BE517826A (US07122603-20061017-C00045.png)
DE (1) DE976227C (US07122603-20061017-C00045.png)
FR (1) FR1071370A (US07122603-20061017-C00045.png)
GB (1) GB724941A (US07122603-20061017-C00045.png)
NL (1) NL80731C (US07122603-20061017-C00045.png)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038598B (de) * 1956-01-27 1958-09-11 Philips Nv Schaltungsanordnung zum Erzeugen einer Regelspannung zur selbsttaetigen Schwundregelung bei einem Fernsehempfaenger
DE1043387B (de) * 1957-07-23 1958-11-13 Telefunken Gmbh Schaltungsanordnugn fuer Fernsehempfaenger zur Konstanthaltung des Schwarzpegels
US2896013A (en) * 1953-08-05 1959-07-21 Motorola Inc Color television receiver
DE1090261B (de) * 1957-06-27 1960-10-06 Telefunken Gmbh Fernsehempfaenger mit kombinierter Kontrast- und Helligkeitsregelung
US3037071A (en) * 1956-11-01 1962-05-29 Rca Corp Autoamtic chroma control of video amplifier with effect limited to chroma components
DE1189122B (de) * 1957-06-25 1965-03-18 Telefunken Patent Schaltungsanordnung zur Helligkeitsautomatik in einem Fernsehempfaenger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1277308B (de) * 1958-04-18 1968-09-12 Philips Patentverwaltung Schaltungsanordnung in einem Fernsehempfaenger mit einer Einrichtung zur Erzeugung einer selbsttaetigen Verstaerkungsregelspannung
NL6504351A (US07122603-20061017-C00045.png) * 1965-04-06 1966-10-07

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241553A (en) * 1941-05-13 Television system
US2200055A (en) * 1938-02-23 1940-05-07 Rca Corp High impedance attenuator
US2192189A (en) * 1938-03-12 1940-03-05 Philip M Haffcke Static limitation in radio receivers
BE431036A (US07122603-20061017-C00045.png) * 1938-07-22
NL70278C (US07122603-20061017-C00045.png) * 1939-05-31
DE929973C (de) * 1939-05-31 1955-07-07 Hazeltine Corp Fernsehempfangseinrichtung
US2548436A (en) * 1946-01-25 1951-04-10 Hazeltine Corp Television receiver background control circuit
NL77693C (US07122603-20061017-C00045.png) * 1948-05-21
US2593011A (en) * 1948-07-17 1952-04-15 Zenith Radio Corp Keyed automatic gain control

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896013A (en) * 1953-08-05 1959-07-21 Motorola Inc Color television receiver
DE1038598B (de) * 1956-01-27 1958-09-11 Philips Nv Schaltungsanordnung zum Erzeugen einer Regelspannung zur selbsttaetigen Schwundregelung bei einem Fernsehempfaenger
US3037071A (en) * 1956-11-01 1962-05-29 Rca Corp Autoamtic chroma control of video amplifier with effect limited to chroma components
DE1189122B (de) * 1957-06-25 1965-03-18 Telefunken Patent Schaltungsanordnung zur Helligkeitsautomatik in einem Fernsehempfaenger
DE1090261B (de) * 1957-06-27 1960-10-06 Telefunken Gmbh Fernsehempfaenger mit kombinierter Kontrast- und Helligkeitsregelung
DE1043387B (de) * 1957-07-23 1958-11-13 Telefunken Gmbh Schaltungsanordnugn fuer Fernsehempfaenger zur Konstanthaltung des Schwarzpegels

Also Published As

Publication number Publication date
US2820093A (en) 1958-01-14
NL80731C (US07122603-20061017-C00045.png)
FR1071370A (fr) 1954-08-31
DE976227C (de) 1963-05-16
BE517826A (US07122603-20061017-C00045.png)

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