Electronic device having touch sensor

Details Electronic device having touch sensor Electronic device having touch sensor

2007-07-10

2007-07-10

Hofsass, Jeffery (Department: 2612)

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

C341S023000, C341S026000, C341S032000, C341S034000, C307S651000, C307S652000, C345S173000, C345S174000

Reexamination Certificate

active

10689491

ABSTRACT:
A variable capacitance unit is formed between one portion of a human body and an opposed electrode facing it through a casing of a robot toy (electronic device) when the one portion of the human body such as a hand or a finger approaches the surface of the casing of the robot. Since the capacitance of the variable capacitance unit varies according to the facing area and the facing distance of the one portion of the human body and the opposed electrode, it is possible to detect the one portion of the human body approaching or touching the robot toy by detecting this change. Since the opposed electrode forming the touch sensor can be provided within the casing, the touch sensor cannot be seen directly from the outside of the robot toy.

REFERENCES:
patent: 4104595 (1978-08-01), Overzet
patent: 4145748 (1979-03-01), Eichelberger et al.
patent: 4703573 (1987-11-01), Montgomery et al.
patent: 5465091 (1995-11-01), Nishino et al.
patent: 5796389 (1998-08-01), Bertram et al.
patent: 6545614 (2003-04-01), Kasai
patent: 2003/0067451 (2003-04-01), Tagg et al.
patent: 2004/0043696 (2004-03-01), Suzuki
patent: 2004/0178997 (2004-09-01), Gillespie et al.
patent: 1 255 631 (1971-12-01), None
patent: 2002-66155 (2002-03-01), None
Search report dated August 4, 2006 for corresponding European Patent Application No. 03 25 6552.

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