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Expired Canadian patentCanada

A method and an apparatus for stream conversion, a method and an apparatus for data recording, and data recording medium

CA 2439467 C · Owner: Kelly, Declan, Patrick · Inventors: Kawasaki, Kojiro; Van Gestel, Wilhelmus Jacobus; Yahata, Hiroshi

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

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Abstract From the Canadian patent

For encoding externally input AV signal to MPEG-TS that enables quickly conversion from MPEG-TS to MPEG-PS, data unit (Multiplexing Unit) is defined which includes a plurality of packet and has data size corresponding to data amount of one pack in MPEG-PS, and MPEG-TS is encoded for each defined data unit. Furthermore, time stamp information (ATS) added to a packet of MPEG-TS which is converted to MPEG-TS and time stamp information (SCR) added to a packet of the converted MPEG-PS are correlated with a predetermined formula.

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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 November 28, 2002 and granted January 27, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 28, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 28, 2002
GrantedJanuary 27, 2015
Term endedNovember 28, 2022
Patent numberCA 2439467 C
Classification (IPC)H04N21/43 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedNov 28, 2002Patent grantedJan 27, 2015Term endedNov 28, 2022

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