FR1271499A - Device for automatically adjusting luminance and contrast in a television receiver - Google Patents

Device for automatically adjusting luminance and contrast in a television receiver

Info

Publication number
FR1271499A
FR1271499A FR825228A FR825228A FR1271499A FR 1271499 A FR1271499 A FR 1271499A FR 825228 A FR825228 A FR 825228A FR 825228 A FR825228 A FR 825228A FR 1271499 A FR1271499 A FR 1271499A
Authority
FR
France
Prior art keywords
contrast
television receiver
automatically adjusting
adjusting luminance
luminance
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
FR825228A
Other languages
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
Priority to FR825228A priority Critical patent/FR1271499A/en
Application granted granted Critical
Publication of FR1271499A publication Critical patent/FR1271499A/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
    • H04N5/57—Control of contrast or brightness
    • H04N5/58—Control of contrast or brightness in dependence upon ambient light

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
FR825228A 1960-04-25 1960-04-25 Device for automatically adjusting luminance and contrast in a television receiver Expired FR1271499A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR825228A FR1271499A (en) 1960-04-25 1960-04-25 Device for automatically adjusting luminance and contrast in a television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR825228A FR1271499A (en) 1960-04-25 1960-04-25 Device for automatically adjusting luminance and contrast in a television receiver

Publications (1)

Publication Number Publication Date
FR1271499A true FR1271499A (en) 1961-09-15

Family

ID=8729983

Family Applications (1)

Application Number Title Priority Date Filing Date
FR825228A Expired FR1271499A (en) 1960-04-25 1960-04-25 Device for automatically adjusting luminance and contrast in a television receiver

Country Status (1)

Country Link
FR (1) FR1271499A (en)

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