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Expired Canadian patentCanada

Method of and apparatus for transmitting data

CA 1161176 A · Owner: Siemens Aktiengesellschaft · Inventors: Chaillie, Charles; Reisinger, Konrad

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Abstract From the Canadian patent

A METHOD OF AND APPARATUS FOR TRANSMITTING DATA" Summary, A multiplexer (MAl) forms a start-stop t.d.m. signal in each signal frame of which a start bit is followed by a code bit, four data bits and two stop bits. The four data bits are obtained from predetermined respective different data sources (DQl-to DQp) and the code bits of consecutive signal frames form a periodically recurring sequence of which each set of four consecutive code bits indicates the assignment of the immediately following data bits to data sources by indicating the signal frame identity. Other methods of using the code bits to indicate the data bit-data source assignment are envisaged. (Fig. 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 January 24, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 24, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 18, 1980
GrantedJanuary 24, 1984
Term endedJanuary 24, 2001
Patent numberCA 1161176 A
Classification (IPC)H04J3/02 +1 more

Timeline

Timeline From CIPO dates

1981198419871990199319961999Application filedDec 18, 1980Patent grantedJan 24, 1984Term endedJan 24, 2001

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