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Expired Canadian patentCanada

Analog-to-digital converting apparatus

CA 1190652 A · Owner: Gte Laboratories Incorporated · Inventors: Goodale, Thomas C.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

BSTR~CT OF THE DISCLOSURE, Microprocessor controlled analoy-to-digital converting appa~atus. For each analog siynal input line there is a comparator having one inpuk connected to the associated analog signal input line. A ramp generator is connected in common to the other input o~ all o~ the comparators. A multipleY~ing arrangement is operated by the mic~oprocessor to couple a selected one of the comparators to a storage register in the microprocessor. The selected comparator compares -the voltage of the anaog input signal to the ramp voltage. If the analog voltage is higher, the comparator ou-tput remains inactive and the microprocessor causes a count to be stored in the storage register. …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted July 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 25, 1982
GrantedJuly 16, 1985
Term endedJuly 16, 2002
Patent numberCA 1190652 A
Classification (IPC)H03M1/12 +1 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMarch 25, 1982Patent grantedJuly 16, 1985Term endedJuly 16, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.