Method and apparatus for scanning a key or button matrix

Details Method and apparatus for scanning a key or button matrix Method and apparatus for scanning a key or button matrix

2006-12-20

2009-11-03

Wong, Albert K (Department: 2612)

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

C341S020000, C341S022000, C340S014100

Reexamination Certificate

active

07612690

ABSTRACT:
An improved key matrix scanning technique conducts a first pre-scan on a first array of connections in a key matrix to identify any activated keys or buttons associated with the first array. A second sub-scan is conducted on a second array of connections in the key matrix but only for the connections in the first array that are detected as having activated keys.

REFERENCES:
patent: 5274371 (1993-12-01), Yang et al.
patent: 5872561 (1999-02-01), Figie et al.
U.S. Patent and Trademark Office; U.S. Appl. No. 10/888,666; File History-Notice of Allowance, Aug. 2, 2006.
U.S. Patent and Trademark Office; PCT application No. PCT/US05/23468; International Search Report; Aug. 25, 2006; 2 Pages.
U.S. Patent and Trademark Office; PCT application No. PCT/US05/23468; International Written Opinion of the ISA and Preliminary Report on Patentability; Aug. 25, 2006; 7 Pages.

Affiliated with

Also associated with

Rating

Method and apparatus for scanning a key or button matrix does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for scanning a key or button matrix, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for scanning a key or button matrix will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4054704