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JPS6440891A - Display controller - Google Patents

Display controller

Info

Publication number
JPS6440891A
JPS6440891A JP62197488A JP19748887A JPS6440891A JP S6440891 A JPS6440891 A JP S6440891A JP 62197488 A JP62197488 A JP 62197488A JP 19748887 A JP19748887 A JP 19748887A JP S6440891 A JPS6440891 A JP S6440891A
Authority
JP
Japan
Prior art keywords
cursor
area
register
line position
displaying
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
JP62197488A
Other languages
Japanese (ja)
Other versions
JP2623592B2 (en
Inventor
Hiroko Mihira
Hiroshi Katsuta
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 Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP62197488A priority Critical patent/JP2623592B2/en
Publication of JPS6440891A publication Critical patent/JPS6440891A/en
Application granted granted Critical
Publication of JP2623592B2 publication Critical patent/JP2623592B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Controls And Circuits For Display Device (AREA)

Abstract

PURPOSE: To improve the operability of cursor display at the time of displaying a divided screen by providing a re-writable register for storing the displaying position of a cursor, reading the scanning position information of a CRT from a program and rewriting the register. CONSTITUTION: The content of a line counter of a timing control circuit 5 is read out, compared with a number of total lines of a screen, if not in coincident, the value of line counter, the line position for starting blink and a finish line position are compared and whether or not it is an effective blinking area is discriminated. If it is not the effective area, a cursor address is set in a cursor address register of a cursor displaying circuit 20 and if effective area, the content of cursor address temporary is set in the cursor address register. Consequently, when the line position for starting blink and the finish line position are set, a cursor in an active screen area performs blinking operation and is a lighting state out of the area.
JP62197488A 1987-08-06 1987-08-06 Display control device Expired - Lifetime JP2623592B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62197488A JP2623592B2 (en) 1987-08-06 1987-08-06 Display control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62197488A JP2623592B2 (en) 1987-08-06 1987-08-06 Display control device

Publications (2)

Publication Number Publication Date
JPS6440891A true JPS6440891A (en) 1989-02-13
JP2623592B2 JP2623592B2 (en) 1997-06-25

Family

ID=16375304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62197488A Expired - Lifetime JP2623592B2 (en) 1987-08-06 1987-08-06 Display control device

Country Status (1)

Country Link
JP (1) JP2623592B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113052749A (en) * 2021-03-02 2021-06-29 长沙景嘉微电子股份有限公司 Video display method and graphics processor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136438A (en) * 1977-05-02 1978-11-29 Sharp Corp Display unit
JPS57200089A (en) * 1981-06-02 1982-12-08 Tokyo Shibaura Electric Co Crt cursor indication system
JPS58221886A (en) * 1982-06-18 1983-12-23 株式会社日立製作所 Display system
JPS61190390A (en) * 1985-02-20 1986-08-25 富士通株式会社 Cursor display system for display unit
JPS62177672A (en) * 1986-01-31 1987-08-04 Toshiba Corp Cursor display controller in multi-window display
JPS6429896A (en) * 1987-07-24 1989-01-31 Nec Corp Display controller

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136438A (en) * 1977-05-02 1978-11-29 Sharp Corp Display unit
JPS57200089A (en) * 1981-06-02 1982-12-08 Tokyo Shibaura Electric Co Crt cursor indication system
JPS58221886A (en) * 1982-06-18 1983-12-23 株式会社日立製作所 Display system
JPS61190390A (en) * 1985-02-20 1986-08-25 富士通株式会社 Cursor display system for display unit
JPS62177672A (en) * 1986-01-31 1987-08-04 Toshiba Corp Cursor display controller in multi-window display
JPS6429896A (en) * 1987-07-24 1989-01-31 Nec Corp Display controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113052749A (en) * 2021-03-02 2021-06-29 长沙景嘉微电子股份有限公司 Video display method and graphics processor
CN113052749B (en) * 2021-03-02 2023-04-07 长沙景嘉微电子股份有限公司 Video display method and graphics processor

Also Published As

Publication number Publication date
JP2623592B2 (en) 1997-06-25

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