Pointing device

Details Pointing device Pointing device

1996-08-07

1998-02-03

Liang, Regina D.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345157, G09G 508

Patent

active

057149801

ABSTRACT:
A compact pointing device of a novel constitution featuring high operability. A disk-like operation unit 4 is disposed on the PC substrate 8 via an annular resilient stopper 7. Magnets 11, 12, 13 and 14 are arranged on the lower surface of the operation unit 4 along the circumference thereof maintaining an angle of 90 degrees. Hall elements 15, 16, 17 and 18 are arranged on the upper surface of the PC substrate 8 opposed to the magnets 11, 12, 13 and 14. A processing circuit is mounted on the PC substrate 8 to convert the changes in the output voltages of the Hall elements 15, 16, 17 and 18 into moving amounts of the cursor in the predetermined directions.

REFERENCES:
patent: 4313113 (1982-01-01), Thornburg
patent: 4739128 (1988-04-01), Grisham
patent: 5012230 (1991-04-01), Yasuda
patent: 5168221 (1992-12-01), Houston
patent: 5504502 (1996-04-01), Arita et al.

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