04627060 is referenced by 57 patents and cites 5 patents.

A self-checking timer usable with a host system includes a clock and a plurality of interconnected counters. During a power-up phase the timer generates a system reset signal and counts the counters in a predetermined sequence. A flip-flop is set and reset during the power-up phase and inhibits generation of the system reset signal. During a normal operating phase, the timer generates a test signal that must be responded to by the host system to continuously inhibit generation of the system reset signal.

Title
Watchdog timer
Application Number
6/676130
Publication Number
4627060
Application Date
November 29, 1984
Publication Date
December 2, 1986
Inventor
John J Selman
Vernon Hills
IL, US
Leon Huang
Hoffman Estates
IL, US
Agent
Kay H Pierce
Daniel D Ryan
Paul C Flattery
Assignee
Baxter Travenol Laboratories
IL, US
IPC
G06F 11/00
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