JPS56145419A - Cursor control system of crt display device - Google Patents

Cursor control system of crt display device

Info

Publication number
JPS56145419A
JPS56145419A JP4861980A JP4861980A JPS56145419A JP S56145419 A JPS56145419 A JP S56145419A JP 4861980 A JP4861980 A JP 4861980A JP 4861980 A JP4861980 A JP 4861980A JP S56145419 A JPS56145419 A JP S56145419A
Authority
JP
Japan
Prior art keywords
cursor
control
request
pushed
cpu
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
JP4861980A
Inventor
Sadao Iwakura
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP4861980A priority Critical patent/JPS56145419A/en
Publication of JPS56145419A publication Critical patent/JPS56145419A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To shorten the movement time of a cursor and to simplify movement control by providing four control keys for moving the cursor vertically and horizontally and a control key for varying the moving speed of the cursor.
CONSTITUTION: When at least one of control keys K1WK5 is pushed, a request for an interruption it sent to CPU, which jumps immediately to a timer interruption routine. Then, when acceleration control key K5 is pushed, data of short-period unit distance movement time is written in timer TM, which subtracts the data of written period time and, when data reaches "0", sends a request for an interrupt to CPU. In response to the request, CPU reads a key input from keyboard KB and moves the cursor continuously while control keys K1WK4 are selectively pushed, thereby completing the cursor movement control via the interruption routine.
COPYRIGHT: (C)1981,JPO&Japio
JP4861980A 1980-04-15 1980-04-15 Cursor control system of crt display device Pending JPS56145419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4861980A JPS56145419A (en) 1980-04-15 1980-04-15 Cursor control system of crt display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4861980A JPS56145419A (en) 1980-04-15 1980-04-15 Cursor control system of crt display device

Publications (1)

Publication Number Publication Date
JPS56145419A true JPS56145419A (en) 1981-11-12

Family

ID=12808417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4861980A Pending JPS56145419A (en) 1980-04-15 1980-04-15 Cursor control system of crt display device

Country Status (1)

Country Link
JP (1) JPS56145419A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01175020U (en) * 1988-05-31 1989-12-13
US5432530A (en) * 1991-05-15 1995-07-11 Fujitsu Limited Pointing device and method of control of same
US5963195A (en) * 1996-12-19 1999-10-05 International Business Machines Corporation Hardware-selectable mouse movement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01175020U (en) * 1988-05-31 1989-12-13
JPH057767Y2 (en) * 1988-05-31 1993-02-26
US5432530A (en) * 1991-05-15 1995-07-11 Fujitsu Limited Pointing device and method of control of same
US5963195A (en) * 1996-12-19 1999-10-05 International Business Machines Corporation Hardware-selectable mouse movement

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