FR1066763A - Method and device for automatically adjusting the brightness of a television receiver as a function of the intensity of ambient light - Google Patents
Method and device for automatically adjusting the brightness of a television receiver as a function of the intensity of ambient lightInfo
- Publication number
- FR1066763A FR1066763A FR1066763DA FR1066763A FR 1066763 A FR1066763 A FR 1066763A FR 1066763D A FR1066763D A FR 1066763DA FR 1066763 A FR1066763 A FR 1066763A
- Authority
- FR
- France
- Prior art keywords
- brightness
- intensity
- function
- ambient light
- television receiver
- 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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1066763T | 1952-11-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1066763A true FR1066763A (en) | 1954-06-09 |
Family
ID=9602874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1066763D Expired FR1066763A (en) | 1952-11-22 | 1952-11-22 | Method and device for automatically adjusting the brightness of a television receiver as a function of the intensity of ambient light |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1066763A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1076736B (en) * | 1958-04-29 | 1960-03-03 | Philips Patentverwaltung | Circuit arrangement for automatic, room-light-dependent readjustment of the basic brightness and contrast of a television receiver |
DE1118251B (en) * | 1959-03-17 | 1961-11-30 | Philips Patentverwaltung | TV receiver with automatic room light dependent contrast and basic brightness control |
DE1124995B (en) * | 1958-08-15 | 1962-03-08 | Loewe Opta Ag | Circuit arrangement for a brightness control of a television picture which is automatically dependent on the room light |
FR2284835A1 (en) * | 1974-09-10 | 1976-04-09 | Floret Francis | Solar heating system using vacuum insulation - has cellular structure between transparent sheets or tubes |
-
1952
- 1952-11-22 FR FR1066763D patent/FR1066763A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1076736B (en) * | 1958-04-29 | 1960-03-03 | Philips Patentverwaltung | Circuit arrangement for automatic, room-light-dependent readjustment of the basic brightness and contrast of a television receiver |
DE1124995B (en) * | 1958-08-15 | 1962-03-08 | Loewe Opta Ag | Circuit arrangement for a brightness control of a television picture which is automatically dependent on the room light |
DE1118251B (en) * | 1959-03-17 | 1961-11-30 | Philips Patentverwaltung | TV receiver with automatic room light dependent contrast and basic brightness control |
FR2284835A1 (en) * | 1974-09-10 | 1976-04-09 | Floret Francis | Solar heating system using vacuum insulation - has cellular structure between transparent sheets or tubes |
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