Extended time-shared scanning keyboard interface

Details Extended time-shared scanning keyboard interface Extended time-shared scanning keyboard interface

1991-01-29

1993-12-28

Yusko, Donald J.

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

341 22, H03M 1120

Patent

active

052743713

ABSTRACT:
A time-shared scanning technique is employed to detect the maximum keys with a keyboard interface. A detecting signal is transmitted, in turn, to the keyboard interface ports in consecutive clock phases. Since every keyboard interface port is independent of each other port, each can detect and record the status of the keyboard except when activated by the detecting signal to transmit a scanning signal utilized to scan all of the other ports. The number of keys that can be detected by the present keyboard interface is about twice that of the conventional keyboard interface.

REFERENCES:
patent: 4231024 (1980-10-01), Munetsugu
patent: 4570154 (1986-02-01), Kinghorn et al.
patent: 4673933 (1987-06-01), Baver
patent: 4906993 (1990-03-01), Freeman et al.

Affiliated with

Also associated with

Rating

Extended time-shared scanning keyboard interface does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extended time-shared scanning keyboard interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extended time-shared scanning keyboard interface will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1546281