Method for inputting different characters by...

Details Method for inputting different characters by... Method for inputting different characters by...

2005-02-22

2005-02-22

Chau, Minh (Department: 2854)

Typewriting machines

Key-board or key lever-actuating mechanism

Including mechanism for activating keys

C400S477000, C400S480000, C200S0050EA, C341S022000

Reexamination Certificate

active

06857800

ABSTRACT:
The invention is to provide a method for inputting different characters by multi-directionally pressing one single key of a portable electronic device more than one time, the key having a plurality of protuberances on an underside and a circuit board having a plurality of pads being equal in number to the protuberances and disposed correspondingly thereto, the method comprises determining the conduction periods of time by a control circuit, while one key being multi-directionally pressed a plurality of times to cause the protuberances to contact the corresponding pads at different conduction periods of time; reading a corresponding character sequentially from a built-in character database based on a longer one of the conduction periods of time; and displaying the read character. By utilizing this method, it is possible of effecting a fast input on the keypad.

REFERENCES:
patent: 5528235 (1996-06-01), Lin et al.
patent: 5796056 (1998-08-01), Bredow et al.
patent: 5861823 (1999-01-01), Strauch et al.
patent: 6157323 (2000-12-01), Tso et al.
patent: 6677541 (2004-01-01), Rapeli
patent: 20020140679 (2002-10-01), Wen
patent: 20040135774 (2004-07-01), La Monica
patent: WO 200113392 (2001-02-01), None

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