Wireless optical pointing device with a common oscillation...

Details Wireless optical pointing device with a common oscillation... Wireless optical pointing device with a common oscillation...

2004-12-06

2008-10-28

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

Reexamination Certificate

active

07443383

ABSTRACT:
A wireless optical pointing device. The wireless optical pointing device comprises a photo sensor detecting a series of continuous images on an operating surface, a processing unit coupled with the photo sensor, processing the detected images, and outputting an image displacement signal accordingly, and a RF (Radio Frequency) unit coupled with the processing unit and transmitting a RF signal according to the image displacement signal, wherein the photo sensor and the RF unit receive a common oscillation frequency source and operate accordingly.

REFERENCES:
patent: 4751505 (1988-06-01), Williams et al.
patent: 5854621 (1998-12-01), Junod et al.
patent: 6781570 (2004-08-01), Arrigo et al.
patent: 7228102 (2007-06-01), Gordon
patent: 2003/0174123 (2003-09-01), Cheng
patent: 2005/0237303 (2005-10-01), Yang

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