GB732867A - Improvements in or relating to circuit arrangements for controlling the gradation ofpicture signals - Google Patents

Improvements in or relating to circuit arrangements for controlling the gradation ofpicture signals

Info

Publication number
GB732867A
GB732867A GB12307/53A GB1230753A GB732867A GB 732867 A GB732867 A GB 732867A GB 12307/53 A GB12307/53 A GB 12307/53A GB 1230753 A GB1230753 A GB 1230753A GB 732867 A GB732867 A GB 732867A
Authority
GB
United Kingdom
Prior art keywords
valve
valves
circuit
grid
ofpicture
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
GB12307/53A
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 GB732867A publication Critical patent/GB732867A/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
    • H04N5/20—Circuitry for controlling amplitude response

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)
GB12307/53A 1952-05-07 1953-05-04 Improvements in or relating to circuit arrangements for controlling the gradation ofpicture signals Expired GB732867A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL312463X 1952-05-07

Publications (1)

Publication Number Publication Date
GB732867A true GB732867A (en) 1955-06-29

Family

ID=19783677

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12307/53A Expired GB732867A (en) 1952-05-07 1953-05-04 Improvements in or relating to circuit arrangements for controlling the gradation ofpicture signals

Country Status (7)

Country Link
US (1) US2820110A (OSRAM)
BE (1) BE519710A (OSRAM)
CH (1) CH312463A (OSRAM)
DE (1) DE955779C (OSRAM)
FR (1) FR1076737A (OSRAM)
GB (1) GB732867A (OSRAM)
NL (1) NL82594C (OSRAM)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088534B (de) * 1956-10-20 1960-09-08 Grundig Max Gradationsregler fuer Fernsehempfaenger
US3005047A (en) * 1953-06-09 1961-10-17 Fernseh Gmbh Gamma control in televising film
US3534168A (en) * 1966-07-16 1970-10-13 Philips Corp Gamma-correction circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708693A (en) * 1971-05-19 1973-01-02 Ferrex Corp Gamma corrector
US5130577A (en) * 1990-04-09 1992-07-14 Unitrode Corporation Computational circuit for transforming an analog input voltage into attenuated output current proportional to a selected transfer function

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1550684A (en) * 1924-09-19 1925-08-25 American Telephone & Telegraph Prevention of overloading in speech circuits
US2074047A (en) * 1934-10-31 1937-03-16 Dechant Francis Lee Electron discharge amplifier
GB462247A (en) * 1935-09-04 1937-03-04 Alexander John Brown Improvements in or relating to valve amplifying circuits for television and like purposes
GB485991A (en) * 1935-11-23 1938-05-23 Philco Radio & Television Corp Improvements in or relating to television synchronizing systems
BE437358A (OSRAM) * 1939-01-14
US2378999A (en) * 1943-06-15 1945-06-26 Rca Corp Compensation amplifier system
US2577506A (en) * 1945-07-09 1951-12-04 Logan M Belleville Amplifier
US2538158A (en) * 1946-03-08 1951-01-16 John H Long Magnetic deflection gauge
US2646472A (en) * 1950-09-06 1953-07-21 Crosley Broadcasting Corp Amplifier control system
DE852257C (de) * 1951-02-16 1952-10-13 Fernseh Gmbh Vorrichtung zur AEnderung der Gradation von Fernsehbildern

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005047A (en) * 1953-06-09 1961-10-17 Fernseh Gmbh Gamma control in televising film
DE1088534B (de) * 1956-10-20 1960-09-08 Grundig Max Gradationsregler fuer Fernsehempfaenger
US3534168A (en) * 1966-07-16 1970-10-13 Philips Corp Gamma-correction circuit

Also Published As

Publication number Publication date
FR1076737A (fr) 1954-10-28
CH312463A (de) 1955-12-31
DE955779C (de) 1957-01-10
US2820110A (en) 1958-01-14
NL82594C (OSRAM)
BE519710A (OSRAM)

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