JPS5698083A - Automatic light volume controller - Google Patents

Automatic light volume controller

Info

Publication number
JPS5698083A
JPS5698083A JP29580A JP29580A JPS5698083A JP S5698083 A JPS5698083 A JP S5698083A JP 29580 A JP29580 A JP 29580A JP 29580 A JP29580 A JP 29580A JP S5698083 A JPS5698083 A JP S5698083A
Authority
JP
Japan
Prior art keywords
alc
threshold level
adjuster
level
preset
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.)
Granted
Application number
JP29580A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6248948B2 (enrdf_load_stackoverflow
Inventor
Yukio Suzuki
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.)
Kokusai Denki Electric Inc
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP29580A priority Critical patent/JPS5698083A/ja
Publication of JPS5698083A publication Critical patent/JPS5698083A/ja
Publication of JPS6248948B2 publication Critical patent/JPS6248948B2/ja
Granted 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)
  • Exposure Control For Cameras (AREA)
JP29580A 1980-01-08 1980-01-08 Automatic light volume controller Granted JPS5698083A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29580A JPS5698083A (en) 1980-01-08 1980-01-08 Automatic light volume controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29580A JPS5698083A (en) 1980-01-08 1980-01-08 Automatic light volume controller

Publications (2)

Publication Number Publication Date
JPS5698083A true JPS5698083A (en) 1981-08-07
JPS6248948B2 JPS6248948B2 (enrdf_load_stackoverflow) 1987-10-16

Family

ID=11469903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29580A Granted JPS5698083A (en) 1980-01-08 1980-01-08 Automatic light volume controller

Country Status (1)

Country Link
JP (1) JPS5698083A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000021289A1 (de) * 1998-10-06 2000-04-13 Deutsche Thomson-Brandt Gmbh Bildschirmgerät mit reduziertem leistungsverbrauch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000021289A1 (de) * 1998-10-06 2000-04-13 Deutsche Thomson-Brandt Gmbh Bildschirmgerät mit reduziertem leistungsverbrauch

Also Published As

Publication number Publication date
JPS6248948B2 (enrdf_load_stackoverflow) 1987-10-16

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