Automatic resetting of control system for loss of time reference

Details Automatic resetting of control system for loss of time reference Automatic resetting of control system for loss of time reference

1980-10-30

1983-09-06

Heckler, Thomas M.

Boots, shoes, and leggings

219492, G06F 1520, G06F 1130, H05B 102

Patent

active

044033028

ABSTRACT:
In an electronic control system, as for instance, one employing a microcomputer, a timing reference signal supplied to the microcomputer, typically from the AC supply line, is monitored for continuity and integrity by determining whether that signal occurs or recurs some predetermined number of times relative to a measuring interval. The measuring interval is established by an event provided by the microcomputer and which recurs with a generally known time relationship to the timing reference signal. Failure of the timing reference signal to occur or recur within the measuring interval is interpreted as a failure of the timing reference, and a reset command is automatically executed to automatically reset or initialize the control system.
A display, for instance associated with an appliance such as a microwave oven, may be repetitively scanned at some normal interval in response to the programmed control of a microcomputer. The measuring interval for monitoring the timing reference may be established from the display scan signal and the monitoring operation may be performed with a program stored in the microcomputer.

REFERENCES:
patent: 4011428 (1977-03-01), Fosnough et al.
patent: 4158432 (1979-06-01), Van Bavel
Smith, L., "A Watchdog Circuit for MC-Based System", Digital Design, Nov. 1979, pp. 78-79.

Affiliated with

Also associated with

Rating

Automatic resetting of control system for loss of time reference does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic resetting of control system for loss of time reference, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic resetting of control system for loss of time reference will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1595315