Optical pointing device

Details Optical pointing device Optical pointing device

1988-12-06

1991-09-03

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

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

340706, 340707, 3581941, 359142, G09G 302, H04N 544

Patent

active

050458434

ABSTRACT:
The present invention relates to an optical pointing device which preferably uses infrared light as a source and a camera as a detector. Movements of the camera with respect to the light source which remains fixed are sensed in the detector portion of the camera to determine the direction in which the camera is pointing with respect to, for example, a display screen adjacent the light source. The electronics included in the present invention are designed to act, responsive to sensing of the position of the camera with respect to the light source to cause corresponding movements of a cursor on the display screen. Other modes of operation of the present invention are also disclosed.

REFERENCES:
patent: 4682159 (1987-07-01), Davison

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