Resistance type sensor

Details Resistance type sensor Resistance type sensor

2006-06-20

2006-06-20

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

Reexamination Certificate

active

07064561

ABSTRACT:
In a resistance type sensor of the present invention, a sensor unit having variable contact resistances and a wakeup switch formed in two layers is produced by folding a FPC forming thereon pressure-sensitive resistive inks, a displacement electrode connected to ground, and a displacement electrode held at a power-supply voltage Vcc. Accordingly, whenever operation is applied to an operating button, the displacement electrode and the displacement electrode are reliably contacted with each other, first, and, then, resistance values of the variable contact resistances are changed while the displacement electrodes are kept in their contacted state. This enables the operation applied to the operating button to be detected reliably.

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patent: 6234031 (2001-05-01), Suga
patent: 2002/0067241 (2002-06-01), Armstrong
patent: 2004/0000195 (2004-01-01), Yanai et al.
patent: 2004/0104735 (2004-06-01), Morimoto
patent: 2004/0189340 (2004-09-01), Okada
patent: 1460910 (2003-12-01), None
patent: 2003-331681 (2003-11-01), None
patent: WO 95/16975 (1995-06-01), None
Chinese Office Action dated Feb. 4, 2005 for Application No. 03147148X (4 pages) (referencing CN1460910A).
English Translation of Chinese Office Action dated Feb. 24, 2005 for Application No. 03147148X (4 pages).
Patent Abstracts of Japan (from esp@cenet) for JP2003 331681 which is Japanese Counterpart Application to CN1460910A; Input Device and Electronic Device with Same; 1 page.

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