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Expired Canadian patentCanada

Method and device for transforming a series of data packets by means of data compression

CA 2180345 C · Owner: Roubos, Johannes Bernardus · Inventors: Schellingerhout, Ben; Roubos, Johannes Bernardus; Herrera Van Der Nood, Jose Manuel

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Abstract From the Canadian patent

The invention relates to a method and device for converting data packets by coding or compression (P) source data packets (11-15), being converted into transmission data packets (21-23). In order to achieve an optimal degree of filling of the transmission data packets a, data field of a transmission data packet (e g. 21) according to the invention comprises only data of one logical channel (e g. A). To this end, the converted data of the logical channels (A B, ...) are separately buffered in preferably parallel buffers. Reconstruction information is not incorporated in the data fields of the transmission data packets but if necessary, is transmitted in advance. The invention is applied in …

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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

  • Filed December 29, 1994 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 29, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 29, 2016.
  • 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 29, 1994
GrantedSeptember 21, 1999
Term endedDecember 29, 2014
Patent numberCA 2180345 C
Classification (IPC)H04L69/04 +1 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedDec 29, 1994Patent grantedSep 21, 1999Term endedDec 29, 2014

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