Locator device using capacitance

Details Locator device using capacitance Locator device using capacitance

1997-05-23

1999-06-22

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345161, 345174, G09G 508

Patent

active

059147040

ABSTRACT:
A position input device that makes it possible to control the position of a cursor by directly utilizing the movement of a finger of a person with good operability and convenience. This device includes an electrode support formed to define a space into which a position indicator is inserted. A plurality of electrode pairs are fixed on the support. Each of the plurality of electrode pairs generates the capacitance. A plurality of capacitance sensors are provided. Each of the plurality of capacitance sensors serves to sense the capacitance of a corresponding one of the plurality of electrode pairs to output a capacitance signal, respectively. A position calculator calculates the position of the position indicator based on the capacitance signals from the plurality of capacitance sensors. A cursor control signal generator generates a cursor control signal. The cursor control signal generated by the cursor control signal generator is sent to a computer to be used to locate a cursor on a screen.

REFERENCES:
patent: 5421694 (1995-06-01), Baker et al.
patent: 5539479 (1996-07-01), Bertram

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