JPS57157695A - Device for improving contrast of display character - Google Patents

Device for improving contrast of display character

Info

Publication number
JPS57157695A
JPS57157695A JP57031653A JP3165382A JPS57157695A JP S57157695 A JPS57157695 A JP S57157695A JP 57031653 A JP57031653 A JP 57031653A JP 3165382 A JP3165382 A JP 3165382A JP S57157695 A JPS57157695 A JP S57157695A
Authority
JP
Japan
Prior art keywords
display character
improving contrast
contrast
improving
character
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
JP57031653A
Other languages
English (en)
Other versions
JPH0365074B2 (ja
Inventor
Dabitsudo Barouzu Shiyaauin
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of JPS57157695A publication Critical patent/JPS57157695A/ja
Publication of JPH0365074B2 publication Critical patent/JPH0365074B2/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)
  • Television Systems (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Picture Signal Circuits (AREA)
JP57031653A 1981-02-27 1982-02-26 Device for improving contrast of display character Granted JPS57157695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/238,838 US4358788A (en) 1981-02-27 1981-02-27 Legibility for alpha-mosaic characters

Publications (2)

Publication Number Publication Date
JPS57157695A true JPS57157695A (en) 1982-09-29
JPH0365074B2 JPH0365074B2 (ja) 1991-10-09

Family

ID=22899537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57031653A Granted JPS57157695A (en) 1981-02-27 1982-02-26 Device for improving contrast of display character

Country Status (6)

Country Link
US (1) US4358788A (ja)
JP (1) JPS57157695A (ja)
CA (1) CA1174387A (ja)
DE (1) DE3207028C2 (ja)
FR (1) FR2500977B1 (ja)
GB (1) GB2094118B (ja)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4573075A (en) * 1983-06-24 1986-02-25 Rca Corporation Digital signal coring apparatus with controllable coring threshold level
DE3344747A1 (de) * 1983-12-10 1985-06-20 Blaupunkt-Werke Gmbh, 3200 Hildesheim Schaltungsanordnung zur automatischen einstellung der schwarzwertspannung
KR900003267B1 (ko) * 1984-10-06 1990-05-12 니뽕 빅터 가부시끼가이샤 칼라 촬상 장치
US4712102A (en) * 1985-01-29 1987-12-08 International Business Machines Corporation Method and apparatus for displaying enlarged or enhanced dot matrix characters
US4703323A (en) * 1985-01-29 1987-10-27 International Business Machines Corporation Method and apparatus for displaying enhanced dot matrix characters
US4827344A (en) * 1985-02-28 1989-05-02 Intel Corporation Apparatus for inserting part of one video image into another video image
US4958361A (en) * 1988-04-22 1990-09-18 Hughes Aircraft Company Edge effect reduction by smoothing in digital receivers
EP0367316B1 (en) * 1988-10-04 1993-09-08 Koninklijke Philips Electronics N.V. Picture signal processing circuit for improving high-frequency picture resolution upon picture signal display
US5254982A (en) * 1989-01-13 1993-10-19 International Business Machines Corporation Error propagated image halftoning with time-varying phase shift
JPH0724422B2 (ja) * 1990-09-12 1995-03-15 池上通信機株式会社 カラーテレビカメラの輝度信号作成回路
GB2292282B (en) * 1994-08-04 1998-08-26 Sony Corp Video special effect generators
US7463311B2 (en) * 2002-09-09 2008-12-09 General Instrument Corporation Method and system for including non-graphic data in an analog video output signal of a set-top box
US9755286B2 (en) * 2014-12-05 2017-09-05 Huawei Technologies Co., Ltd. System and method for variable microwave phase shifter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50106515A (ja) * 1973-12-25 1975-08-22
JPS50106516A (ja) * 1973-12-25 1975-08-22

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212008A (en) * 1978-05-24 1980-07-08 Rca Corporation Circuit for displaying characters on limited bandwidth, raster scanned display
US4314245A (en) * 1980-03-10 1982-02-02 Wilbur Jr John R Video compensation subcircuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50106515A (ja) * 1973-12-25 1975-08-22
JPS50106516A (ja) * 1973-12-25 1975-08-22

Also Published As

Publication number Publication date
GB2094118A (en) 1982-09-08
FR2500977B1 (fr) 1987-07-31
US4358788A (en) 1982-11-09
CA1174387A (en) 1984-09-11
DE3207028A1 (de) 1982-09-16
GB2094118B (en) 1984-09-19
DE3207028C2 (de) 1986-08-14
FR2500977A1 (fr) 1982-09-03
JPH0365074B2 (ja) 1991-10-09

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