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Expired Canadian patentCanada

Method for bus access for data transmission through a multiprocessor bus

CA 1269771 C · Owner: Geiger, Gerhard · Inventors: Strafner, Michael; Geiger, Gerhard

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

A method for accessing a multiprocessor data bus between integrated function blocks for bidirectional data exchange, which is operated in time-multiplex by means of a pulse frame synchronizing signal, which includes fixedly positioned within the pulse frame a first timing channel carrying bus access control information and a second timing channel carrying data and address information, which comprises: checking by the, function block seeking to access to the bus the bus for presence, of control information in the first timing channel; checking next in case the bus has no control information in the first timing channel, the function block for presence of a first priority condition; placing …

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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 May 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 21, 1985
GrantedMay 29, 1990
Term endedMay 29, 2007
Patent numberCA 1269771 C
Classification (IPC)H04J3/06 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedAug 21, 1985Patent grantedMay 29, 1990Term endedMay 29, 2007

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