Break-away key for electronic circuitry

Details Break-away key for electronic circuitry Break-away key for electronic circuitry

1995-01-20

1998-11-10

Bowler, Alyssa H.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 6108, 361792, G06F 1500

Patent

active

058357815

ABSTRACT:
A structural key is checked under program control to control the mode of operation for a processor-based electronic circuit board. A break-away key portion of the circuit board is connected to the main portion along a boundary of frangible links with circuit paths traversing the boundary and carrying logic signals. The presence or absence of the break-away portion is sensed by sensing the bit pattern at an I/O address. If the absence of the break-away portion is sensed, the function of a user-commanded motion block is tested and processor operation is limited to executing functions for the mode corresponding to the absence of the break-away portion.

REFERENCES:
patent: 3594684 (1971-07-01), Miller
patent: 4216523 (1980-08-01), Harford
patent: 4670749 (1987-06-01), Freeman
patent: 4985808 (1991-01-01), Zernov
patent: 5023726 (1991-06-01), Campisi
patent: 5044964 (1991-09-01), Minerd et al.
patent: 5049728 (1991-09-01), Rovin
patent: 5280413 (1994-01-01), Pai
patent: 5359168 (1994-10-01), Cunningham
patent: 5369219 (1994-11-01), Kerns

Affiliated with

Also associated with

Rating

Break-away key for electronic circuitry does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Break-away key for electronic circuitry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Break-away key for electronic circuitry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1527621