Spatial light modulator display pointing device

Details Spatial light modulator display pointing device Spatial light modulator display pointing device

1995-12-05

1997-08-05

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345157, G09G 508

Patent

active

056547412

ABSTRACT:
A display system with a pointer that is not restricted by wires or sensors. The display uses a spatial light modulator (14) for projecting an image on the screen (20). During a time period when all of the cells of the modulator (14) are in the same state, a cursor projected onto the screen by the pointer is reimaged from the screen to a detector (26), which translates the cursor image into signals for a central processing unit (38). The central processing unit (38) then directs the system as to what tasks are being dictated by the cursor.

REFERENCES:
patent: 4280135 (1981-07-01), Schlossberg
patent: 4832447 (1989-05-01), Javidi
patent: 5181015 (1993-01-01), Marshall et al.
Proxima product announcement, no date given.

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