Photocopy monitoring system and method for monitoring copiers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 2, 1993
Issued Date -
N/A
app pub date -
Jul 31, 1991
filing date -
May 17, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully