Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1997-05-01
1999-09-07
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345165, 345166, G09G 508
Patent
active
059494042
ABSTRACT:
A controller has a stationary housing, a stem projecting from the housing along a stem axis, and a mount in the housing operatively engaging the stem and permitting same to tip relative to the housing about a center point in the housing generally traversed by the axis. An element carrying at least one emitter/receiver unit directs a beam generally radially of the center and another element carrying a field of interleaved reflective and less reflective regions is juxtaposed with the unit, spaced from the center, and impinged by the beam of the unit. One of the elements is fixed on the housing and the other of the elements is fixed on the stem so that on tipping of the stem about the center the beam is swept across the regions of the field.
REFERENCES:
patent: 4533827 (1985-08-01), Fincher
patent: 4686361 (1987-08-01), Bard
patent: 4731530 (1988-03-01), Mikan
patent: 4748323 (1988-05-01), Holiday
patent: 4982189 (1991-01-01), Dammeyer
patent: 5103225 (1992-04-01), Dolan
patent: 5252821 (1993-10-01), Sugimura
Dubno Herbert
Hjerpe Richard A.
Tran Henry N.
Zabel Technik Gesellschaft Mit Beschrankter Haftung Herstellung
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