Pointing device and mobile telephone

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C455S151200, C455S566000

Reexamination Certificate

active

07058432

ABSTRACT:
In a small-size mobile terminal, an optical sensor for reading an optical image of a finger that is kept in contact therewith is installed below an LCD for displaying information. The optical sensor is provided with a light source for emitting a predetermined light beam toward a sensor window, a lens for converging light reflected by the finger that is in contact with the sensor window and an image sensor for detecting the converged light. A CPU shifts a pointer based upon the movement of the finger detected by the optical sensor. Thus, it is possible to obtain a pointing device that is superior in the operability, miniaturizes the device, and is resistive to dusts.

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“Solid-State Optical Mouse Sensor with PS/2 and Quadrature Outputs”, Application Note 1179 Agilent Technologies Inc., 2000, pp. 1-12.
“Agilent HDNS-2000 Optical Mouse Sensor” Agilent Technologies, Inc., Jan. 4, 2001 (2 pages).

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