Key system with two operation nodes for detecting status of...

Details Key system with two operation nodes for detecting status of... Key system with two operation nodes for detecting status of...

2007-01-18

2010-08-17

Edwards, Jr., Timothy (Department: 2612)

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

C341S020000, C341S026000, C340S014100, C340S002200, C340S002270, C340S002280, C400S472000, C400S473000, C345S168000, C345S156000, C178S018050

Reexamination Certificate

active

07777650

ABSTRACT:
A key system utilizes two operation nodes to detect the status of a plurality of keys, and each operation node can output and read a high, a low, and a clock signal. When an operation node outputs a high signal and reads a return signal and then outputs a low signal and reads a return signal, the other operation node outputs a clock signal. Therefore, the two operation nodes can detect the status of six keys.

REFERENCES:
patent: 3715444 (1973-02-01), Pearlman
patent: 4498143 (1985-02-01), Strzelecki
patent: 4518951 (1985-05-01), Backes
patent: 4583189 (1986-04-01), Koyama
patent: 4585908 (1986-04-01), Smith
patent: 4633228 (1986-12-01), Larson
patent: 4673933 (1987-06-01), Bauer
patent: 5184120 (1993-02-01), Schultz
patent: 5371498 (1994-12-01), Kwon et al.
patent: 5521575 (1996-05-01), Pack
patent: 5621402 (1997-04-01), Spak
patent: 5719597 (1998-02-01), Fong
patent: 5831556 (1998-11-01), Niot
patent: 5900829 (1999-05-01), Gardner et al.
patent: 5929790 (1999-07-01), Lim
patent: 6020833 (2000-02-01), Chang
patent: 6178388 (2001-01-01), Claxton
patent: 6222466 (2001-04-01), Uggmark
patent: 6577250 (2003-06-01), Yee
patent: 7095339 (2006-08-01), Peng et al.
patent: 2003/0058845 (2003-03-01), Tierling
patent: 2000-293302 (2000-10-01), None
patent: 569125 (2004-01-01), None
patent: I245212 (2005-12-01), None

Affiliated with

Also associated with

Rating

Key system with two operation nodes for detecting status of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Key system with two operation nodes for detecting status of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key system with two operation nodes for detecting status of... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4149838