FR1076737A - Dispositif de réglage de la gradation d'un signal d'image - Google Patents

Dispositif de réglage de la gradation d'un signal d'image

Info

Publication number
FR1076737A
FR1076737A FR1076737DA FR1076737A FR 1076737 A FR1076737 A FR 1076737A FR 1076737D A FR1076737D A FR 1076737DA FR 1076737 A FR1076737 A FR 1076737A
Authority
FR
France
Prior art keywords
gradation
adjusting
image signal
image
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
Other languages
English (en)
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1076737A publication Critical patent/FR1076737A/fr
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
    • H04N5/202—Gamma control
    • 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)
FR1076737D 1952-05-07 1953-05-06 Dispositif de réglage de la gradation d'un signal d'image Expired FR1076737A (fr)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR1076737A true FR1076737A (fr) 1954-10-28

Family

ID=19783677

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1076737D Expired FR1076737A (fr) 1952-05-07 1953-05-06 Dispositif de réglage de la gradation d'un signal d'image

Country Status (7)

Country Link
US (1) US2820110A (US07122603-20061017-C00045.png)
BE (1) BE519710A (US07122603-20061017-C00045.png)
CH (1) CH312463A (US07122603-20061017-C00045.png)
DE (1) DE955779C (US07122603-20061017-C00045.png)
FR (1) FR1076737A (US07122603-20061017-C00045.png)
GB (1) GB732867A (US07122603-20061017-C00045.png)
NL (1) NL82594C (US07122603-20061017-C00045.png)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB770457A (en) * 1953-06-09 1957-03-20 Fernseh Gmbh Process for transmission of pictures by television
DE1088534B (de) * 1956-10-20 1960-09-08 Grundig Max Gradationsregler fuer Fernsehempfaenger
NL6610059A (US07122603-20061017-C00045.png) * 1966-07-16 1968-01-17
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
GB485989A (en) * 1935-11-23 1938-05-23 Philco Radio & Television Corp Improvements in signal generating circuits
BE437358A (US07122603-20061017-C00045.png) * 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

Also Published As

Publication number Publication date
CH312463A (de) 1955-12-31
GB732867A (en) 1955-06-29
BE519710A (US07122603-20061017-C00045.png)
NL82594C (US07122603-20061017-C00045.png)
DE955779C (de) 1957-01-10
US2820110A (en) 1958-01-14

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