Device and method for pointer system of digitizer tablet

Details Device and method for pointer system of digitizer tablet Device and method for pointer system of digitizer tablet

2007-02-13

2007-02-13

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Stylus

C178S018070, C178S020020

Reexamination Certificate

active

10277752

ABSTRACT:
The invention, an improved device and method for the pointer system of a digitizer tablet, is to repetitiously emit signals sequentially from a specific set of inductive loop when the position pointed by the wireless pointer device is located within a range formed by this specific set of inductive loop induced most intensively during a locally scanning process. After a transient energy storage of the wireless pointer device, corresponding resonant signals are emitted out and are received sequentially by several sets of inductive loop located on the digitizer tablet in the neighborhood of this specific set of inductive loop and, by these signals, the wireless pointer device's coordinate position on the digitizer tablet is calculated out relatively. Thereby, the intensities of the resonant signals received by these several sets of inductive loop will be displayed as a linear distribution, such that the calculation formula for coordinate position and the design for relative circuit elements may be simplified greatly, and the production cost and the power consumption may further be lowered down effectively.

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