Signal processing circuit for a pointing device

Details Signal processing circuit for a pointing device Signal processing circuit for a pointing device

1992-10-06

1994-09-20

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345145, 273148B, G09G 500

Patent

active

053493702

ABSTRACT:
In a signal processing circuit for a pointing device comprising first, second, third, and fourth pressure detection elements corresponding to the movement of a cursor in an X-axis plus direction, an X-axis minus direction, a Y-axis plus direction, and a Y-axis minus direction, respectively, a first processing circuit processes a first pressure detection signal from the first pressure detection element to produce a first move signal representative of a cursor moving value in the X-axis plus direction. A second processing circuit processes a second pressure detection signal from the second pressure detection element to produce a second move signal representative of a cursor moving value in the X-axis minus direction. A third processing circuit processes a third pressure detection signal from the third pressure detection element to produce a third move signal representative of a cursor moving value in the Y-axis plus direction. A fourth processing circuit processes a fourth pressure detection signal from the fourth pressure detection element to produce a fourth move signal representative of a cursor moving value in the Y-axis minus direction. A first calculation circuit calculates a cursor moving value in an X-axis direction by the use of the first and the second move signals. A second calculation circuit calculates a cursor moving value in a Y-axis direction by the use of the third and the fourth move signals.

REFERENCES:
patent: 5153571 (1992-10-01), Takahashi
patent: 5164713 (1992-11-01), Bain
patent: 5179368 (1993-01-01), Lippincott

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