Electronic mouse

Details Electronic mouse Electronic mouse

1981-05-18

1983-06-28

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

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

178 18, 250237R, 340707, 340365P, G08B 536

Patent

active

043908730

ABSTRACT:
A position control system employing a movable detector means which communicates energy to and from a pattern of passive, position-related indicia or marks on a surface. In the preferred embodiment the movable detector means includes a light source and a four-quadrant detector, with the surface having a high contrast checkerboard square pattern. The four-quadrant detector will report different states as the detector means is moved across different squares. The states are decoded in a lookup table and electrical signals are generated for controlling X and Y registers of a cursor control or the like.

REFERENCES:
patent: 3182291 (1965-05-01), Nassimbene
patent: 3297879 (1967-01-01), Meyer
patent: 3541521 (1970-11-01), Koster
patent: 3541541 (1970-11-01), Engelbart
patent: 3825746 (1974-07-01), Kendler et al.
patent: 4184044 (1980-01-01), Zwerenz
patent: 4303914 (1981-12-01), Page
patent: 4306147 (1981-12-01), Fukuyama et al.

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