Position pointing device

Details Position pointing device Position pointing device

2006-12-12

2006-12-12

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Orientation or position

C702S127000

Reexamination Certificate

active

07149647

ABSTRACT:
A position pointing device includes a resonant circuit, a resonance-characteristic control circuit for controlling characteristics of the resonant circuit in accordance with pointing-device information at timing synchronized with at least part of an electromagnetic wave that is intermittently transmitted from a tablet and for returning the pointing-device information to the tablet, a clock oscillator circuit for generating a clock signal for driving the resonance-characteristic control circuit, and clock starting means for stopping an operation of the clock oscillator circuit when a start condition is set and for starting the operation of the clock oscillator circuit when the resonant circuit generates a signal specified by the start condition. The position pointing device further includes start-condition setting means for setting the start condition in the clock starting means at timing in accordance with an operation of the resonance-characteristic control circuit.

REFERENCES:
patent: 5557076 (1996-09-01), Wieczorek et al.
patent: 5914710 (1999-06-01), Chen et al.
patent: 2003/0217871 (2003-11-01), Chao et al.
Fletcher, W; “An Engineering Approach to Digital Design”; Prentice-Hall, Englewood Cliffs NJ; 1980; pp. 296-301.

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