Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2008-01-23
2011-10-18
Dean, Raymond (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S550100, C455S557000, C379S433100
Reexamination Certificate
active
08041389
ABSTRACT:
An improvement to a cellular camera phone comprising a source of illumination positioned adjacent to the camera unit and configured to illuminate a portion of an underlying surface within the field of view the camera unit; programming effective to (a) collect a current tracking image frame, (b) compare the current tracking image frame with a prior tracking image frame, (c) compute a relative displacement between the tracking image frames, and (d) store the current tracking image frame as a prior tracking image frame; and a wireless peripheral interface, wherein the wireless peripheral interface communicates the relative displacement to a computer. Also, a method of retrofitting a cellular camera phone to provide wireless mouse functionality comprising the steps of providing an accessory unit for engagement with the cellular phone configured to position a source of illumination adjacent to the camera unit and to illuminate a portion of an underlying surface within the field of view the camera unit; providing the aforedescribed programming, and providing programming to communicate the relative displacement to a computer.
REFERENCES:
patent: 7366540 (2008-04-01), Ansari et al.
patent: 7783184 (2010-08-01), Chi
patent: 2005/0186907 (2005-08-01), Tailor
patent: 2006/0003709 (2006-01-01), Wood
Agilent Technologies, Agilent ADNS—2610 Optical Mouse Sensor Data Sheet, pp. 1-27, Agilent (2004).
Combs Steven Donald
Luciano Joseph Wade
Dean Raymond
Lexmark International Inc.
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