JPS5762680A - Display controller - Google Patents

Display controller

Info

Publication number
JPS5762680A
JPS5762680A JP55138973A JP13897380A JPS5762680A JP S5762680 A JPS5762680 A JP S5762680A JP 55138973 A JP55138973 A JP 55138973A JP 13897380 A JP13897380 A JP 13897380A JP S5762680 A JPS5762680 A JP S5762680A
Authority
JP
Japan
Prior art keywords
signal
circuit
level
inputted
changed
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.)
Pending
Application number
JP55138973A
Other languages
Japanese (ja)
Inventor
Masae Ogoshi
Isao Ishikawa
Toshiro Nozoe
Yoshitomi Nagaoka
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.)
Panasonic Holdings Corp
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
Matsushita Electric Industrial Co 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 Nippon Telegraph and Telephone Corp, Matsushita Electric Industrial Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP55138973A priority Critical patent/JPS5762680A/en
Publication of JPS5762680A publication Critical patent/JPS5762680A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Color Television Systems (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To adjust luminance or contrast easily, when a digital signal is displayed on television as an input signal. CONSTITUTION:A signal coresponding to color is inputted to the 1st signal processing circuit 2 as a digital signal. At the same time, a control signal is also inputted, and an output signal of a signal conversion circuit is changed from V0 to KV0 under the control signal in response to 0/1 of the input signal. This output signal is changed into a corresponding DC level with a clamp circuit. This DC level signal is applied to a switch circuit, either of video signal or the said DC level signal is selected and applied to a drive circuit.
JP55138973A 1980-10-03 1980-10-03 Display controller Pending JPS5762680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55138973A JPS5762680A (en) 1980-10-03 1980-10-03 Display controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55138973A JPS5762680A (en) 1980-10-03 1980-10-03 Display controller

Publications (1)

Publication Number Publication Date
JPS5762680A true JPS5762680A (en) 1982-04-15

Family

ID=15234494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55138973A Pending JPS5762680A (en) 1980-10-03 1980-10-03 Display controller

Country Status (1)

Country Link
JP (1) JPS5762680A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207782A (en) * 1982-05-28 1983-12-03 Matsushita Electric Ind Co Ltd Signal clamping device
JPS5962282A (en) * 1982-09-30 1984-04-09 Sharp Corp Color encoder
JPS5964990A (en) * 1982-10-06 1984-04-13 Toshiba Corp Color television receiver
JPS60248080A (en) * 1984-05-24 1985-12-07 Nec Home Electronics Ltd R-g-b changeover circuit
JPS61142892A (en) * 1984-12-15 1986-06-30 Sharp Corp Color signal processing circuit
JPS6276886A (en) * 1985-09-25 1987-04-08 アールシーエー　ライセンシング　コーポレーシヨン Video signal processing device with image display device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207782A (en) * 1982-05-28 1983-12-03 Matsushita Electric Ind Co Ltd Signal clamping device
JPS5962282A (en) * 1982-09-30 1984-04-09 Sharp Corp Color encoder
JPS5964990A (en) * 1982-10-06 1984-04-13 Toshiba Corp Color television receiver
JPS60248080A (en) * 1984-05-24 1985-12-07 Nec Home Electronics Ltd R-g-b changeover circuit
JPS61142892A (en) * 1984-12-15 1986-06-30 Sharp Corp Color signal processing circuit
JPS6276886A (en) * 1985-09-25 1987-04-08 アールシーエー　ライセンシング　コーポレーシヨン Video signal processing device with image display device

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