Patent Yard Sign in
Expired Canadian patentCanada

System and methods for efficient quantization

CA 2467670 C · Owner: Motorola Mobility Llc · Inventors: Chatterjee, Chanchal

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A method in a signal processor for quantizing a digital signal is provided. A fixed-point approximation of a value X÷Q is generated wherein X is a , fixed-point value based on one or more samples in the digital signal and , wherein Q is a fixed-point quantization parameter. A correction is generated and the approximation is modified with the correction.

Read the whole patent

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 25, 2002 and granted April 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 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 25, 2002
GrantedApril 9, 2013
Term endedNovember 25, 2022
Patent numberCA 2467670 C
Classification (IPC)H04N19/12 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedNov 25, 2002Patent grantedApril 9, 2013Term endedNov 25, 2022

Sources & verification

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