JPS5520517A - Display unit of color cathode ray tube - Google Patents

Display unit of color cathode ray tube

Info

Publication number
JPS5520517A
JPS5520517A JP9226978A JP9226978A JPS5520517A JP S5520517 A JPS5520517 A JP S5520517A JP 9226978 A JP9226978 A JP 9226978A JP 9226978 A JP9226978 A JP 9226978A JP S5520517 A JPS5520517 A JP S5520517A
Authority
JP
Japan
Prior art keywords
color
luminance
information
background
terminal
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
JP9226978A
Other languages
Japanese (ja)
Other versions
JPS5758669B2 (en
Inventor
Takahiro Yamazaki
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP9226978A priority Critical patent/JPS5520517A/en
Publication of JPS5520517A publication Critical patent/JPS5520517A/en
Publication of JPS5758669B2 publication Critical patent/JPS5758669B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Color Television Systems (AREA)
  • Digital Computer Display Output (AREA)

Abstract

PURPOSE: To make easy for discriminating the image information even with the background the same color as the image information by taking the luminance of the image information on the screen different from that of the background.
CONSTITUTION: The information processor 1 receives the character information at the terminal 11, outputs the luminance control signal S1 in synchronizing with the raster scan to the terminal 12, and adds the color character information to the color memory 12 in the first color control circuit 2 via the terminal 13. The data latch 22 picks up the color information in the memory 21 with the latch pulse from the output terminal 14 of the information processing circuit 1 and gives it to the gates 231 to 233 together with the luminance control signal. If the luminance signal S1 corresponding to the display character is absent, the background luminance control signal S2 is fed to the gates 331 to 333 in the second color control circuit 3 having the switches 311 to 313 to set the background manually. The output of the gates 231 to 233 and 331 to 333 is fed to the cathode ray tube so that different luminance levels are displayed via the synthesis circuit(not shown).
COPYRIGHT: (C)1980,JPO&Japio
JP9226978A 1978-07-28 1978-07-28 Display unit of color cathode ray tube Granted JPS5520517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9226978A JPS5520517A (en) 1978-07-28 1978-07-28 Display unit of color cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9226978A JPS5520517A (en) 1978-07-28 1978-07-28 Display unit of color cathode ray tube

Publications (2)

Publication Number Publication Date
JPS5520517A true JPS5520517A (en) 1980-02-14
JPS5758669B2 JPS5758669B2 (en) 1982-12-10

Family

ID=14049664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9226978A Granted JPS5520517A (en) 1978-07-28 1978-07-28 Display unit of color cathode ray tube

Country Status (1)

Country Link
JP (1) JPS5520517A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635175A (en) * 1979-08-29 1981-04-07 Nippon Electric Co Adjusting background signal level in color display unit
US4388639A (en) * 1981-05-18 1983-06-14 Zenith Radio Corporation Color control circuit for teletext-type decoder
US4652869A (en) * 1985-04-16 1987-03-24 Allied Corporation Color enhancement for display device
JPH02224578A (en) * 1989-02-27 1990-09-06 Mitsubishi Electric Corp Screen display device
US5039983A (en) * 1987-12-24 1991-08-13 Goldstar Co., Ltd. Text mode color selection system
CN107577583A (en) * 2017-09-13 2018-01-12 深圳市嘉合劲威电子科技有限公司 Memory bar synchronous light-emitting method and device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635175A (en) * 1979-08-29 1981-04-07 Nippon Electric Co Adjusting background signal level in color display unit
US4388639A (en) * 1981-05-18 1983-06-14 Zenith Radio Corporation Color control circuit for teletext-type decoder
US4652869A (en) * 1985-04-16 1987-03-24 Allied Corporation Color enhancement for display device
US5039983A (en) * 1987-12-24 1991-08-13 Goldstar Co., Ltd. Text mode color selection system
JPH02224578A (en) * 1989-02-27 1990-09-06 Mitsubishi Electric Corp Screen display device
CN107577583A (en) * 2017-09-13 2018-01-12 深圳市嘉合劲威电子科技有限公司 Memory bar synchronous light-emitting method and device
CN107577583B (en) * 2017-09-13 2020-06-16 深圳市嘉合劲威电子科技有限公司 Synchronous lighting method and device for memory bank

Also Published As

Publication number Publication date
JPS5758669B2 (en) 1982-12-10

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