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Expired Canadian patentCanada

Synchronous dram bandwidth optimization for display downsizing of an mpeg-2 image

CA 2297474 C · Owner: General Instrument Corporation · Inventors: Vuong, Bao

CIPO record

Overview

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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 processing digital video data is disclosed and comprises the step of , decompressing compressed digital video pixel data that is received from a channel , to provide decompressed pixel data correlative of an original image. The method , also comprises the step of averaging horizontally adjacent pixel pairs of at least a , portion of said decompressed pixel data to provide horizontally downsized pixel , data. Said horizontally downsized pixel data is stored in a first bank of a memory , and data from every other pixel of said decompressed pixel data is stored in a second bank of said memory.

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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 January 21, 2000 and granted August 23, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 21, 2000
GrantedAugust 23, 2011
Term endedJanuary 21, 2020
Patent numberCA 2297474 C
Classification (IPC)H04N21/23 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedJan 21, 2000Patent grantedAug 23, 2011Term endedJan 21, 2020

Sources & verification

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