Cursor movement control key switch

Details Cursor movement control key switch Cursor movement control key switch

1987-02-17

1990-06-05

Moore, David K.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340709, 340711, 200 5R, 200 18, 341 22, G09G 302

Patent

active

049317814

ABSTRACT:
A cursor movement control key switch for controlling movement of a cursor on a display screen of a CRT or the like requires only one key. Operation of a single key allows both control of the direction of the cursor, and control of brightness of the display, volume level of sounds at a speaker, a display size of the cursor or the like. A CPU periodically detects the states of signals at terminals corresponding to contacts disposed in the key switch so as to produce signals to perform the above control operations. The key switchy provides improved operability.

REFERENCES:
patent: 3729129 (1973-04-01), Fletcher et al.
patent: 4092532 (1978-05-01), Heyes
patent: 4148014 (1979-04-01), Burson
patent: 4313113 (1982-01-01), Thornburg
patent: 4382166 (1983-05-01), Kim
patent: 4475015 (1984-10-01), Kobayashi et al.
IBM Technical Disclosur Bulletin, vol. 8, No. 8, Jan. 1966, "Keyboard", J. A. Toris p. 1064.

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