Input device

Details Input device Input device

2008-06-24

2008-06-24

Wong, Albert K (Department: 2612)

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

C341S026000, C345S173000

Reexamination Certificate

active

07391343

ABSTRACT:
An input device includes an input circuit including a plurality of key switches connected in parallel to one another, and a control circuit including a key input terminal to which a first terminal of the input circuit is connected, and an interrupt terminal to which a second terminal of the input circuit is connected. When a key switch is turned ON, an interrupt signal is input from the second terminal of the input circuit to the interrupt terminal, whereby the control circuit transitions from a power saving mode to a normal mode. Then, the control circuit determines which one of the key switches is turned ON based on a value of a voltage applied from the first terminal of the input circuit to the key input terminal. Thus, it is possible to realize a power saving mode without having to provide a comparator.

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patent: 6504492 (2003-01-01), Muurinen
patent: 6784810 (2004-08-01), Falik et al.
patent: 2003/0144023 (2003-07-01), Woods et al.
patent: 05-053706 (1993-03-01), None
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patent: 09-198169 (1997-07-01), None
patent: 2001-014073 (2001-01-01), None
patent: 2001-186657 (2001-06-01), None
patent: 2003-051960 (2003-02-01), None

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