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Expired Canadian patentCanada

Detection-synchronizer

CA 1051981 A · Owner: Teletype Corporation · Inventors: Alvarez, Cesar E. (Jr.)

CIPO record

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

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Abstract From the Canadian patent

An asynchronous data input signal is detected and synchronized by a fast-acting circuit. The input is used to modulate a local clock and a detecting latch is then driven by the data-modulated clock. Most of the propagation delay found in conventional detector-synchronizers is eliminated since the SET input to the latch which is essenti-, ally the clock signal is generated without any gate delay and the CLEAR input is generated with only a single gate delay. Thus the circuit is well suited for multiple clock systems in which detection and synchronization to one clock must be accomplished before the pulse of a second clock begins. -1-

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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 April 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 3, 1979
Term endedApril 3, 1996
Patent numberCA 1051981 A
Classification (IPC)H03L7/00 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 3, 1979Term endedApril 3, 1996

Sources & verification

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