Keyboard crosspoint encoder having pseudo-n-key rollover

Details Keyboard crosspoint encoder having pseudo-n-key rollover Keyboard crosspoint encoder having pseudo-n-key rollover

1987-04-13

1988-12-27

Curtis, Marshall M.

Communications: electrical

Audible indication

Percussion-type sound producer

340365S, 340365R, H04L 300

Patent

active

047943750

ABSTRACT:
A crosspoint encoder having a n-key rollover data collection system in which all keystrokes are recognized. A phantom key detection routine detects phantom key conditions and provides for temporary storage of subsequent keystrokes until the phantom condition is removed thus ensuring uninterrupted recordation of all keystrokes.

REFERENCES:
patent: 3892915 (1975-07-01), Budworth et al.
patent: 4106011 (1978-08-01), Melanson et al.
patent: 4211915 (1980-07-01), Miller et al.
patent: 4231016 (1980-10-01), Ueda
patent: 4420744 (1983-12-01), Jesson
patent: 4581603 (1986-04-01), Ingold et al.
patent: 4599608 (1986-07-01), Matsuoka
"Solution to Phantom Key Problems"-IBM Technical Disclosure Bulletin-vol. 28, No. 5, Oct./85-pp. 1914-1919.
Bolt et al.,-"Phantom Key Detection/Phantom Key Scan Code"-vol. 27, No. 7A, Dec./84-p. 4109.

Affiliated with

Also associated with

Rating

Keyboard crosspoint encoder having pseudo-n-key rollover does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Keyboard crosspoint encoder having pseudo-n-key rollover, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyboard crosspoint encoder having pseudo-n-key rollover will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-870288