05184179 is referenced by 91 patents and cites 44 patents.

A system for monitoring a variable output paper processing device is provided. The monitoring system includes a counter which counts the number of papers processed and provides a count signal for each paper counted. A controller receives the count signals and totals the counts. The controller includes an internal clock as well as an interrupt signal generator. Upon receipt of the count signal, the interrupt generator generates an interrupt signal starting the internal clock. The internal clock has a duration of a predetermined value larger than random noise signals. The controller compares the internal clock signal to the count signal and determines whether a valid count has occurred. The controller includes a CPU and RAM which are coupled by a PAL which isolates the RAM from the CPU when a voltage supplied to the CPU and PAL falls below a predetermined level.

Title
Photocopy monitoring system and method for monitoring copiers
Application Number
194710
Publication Number
5184179
Application Date
July 31, 1991
Publication Date
February 2, 1993
Inventor
Brian Johansen
Bricktown
NJ, US
Gregory King
Andover
NJ, US
Leonard Tarr
Woodbury
NY, US
Agent
Blum Kaplan
Assignee
Monitel Products
NJ, US
IPC
G03G 15/00
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