Patent Yard Sign in
Expired Canadian patentCanada

Conversion of synthesized spectral components for encoding and low-complexity transcoding

CA 2776988 C · Owner: Dolby Laboratories Licensing Corporation · Inventors: Lennon, Brian Timothy; Andersen, Robert Loring; Truman, Michael Mead

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

The present invention pertains generally to audio coding methods and devices and more specifically pertains to improved methods and devices for transcoding encoded , audio information in a first format to encoded audio information in a second format. In an , exemplary transcoding method and device first quantized values of an audio , signal encoded in the first format are dequantized according to quantizing resolutions determined in response , to one or more first control parameters. The dequantized values are quantized into second , quantized values according to quantized resolutions determined in response to one or more , second control parameters. The second quantized values the …

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 January 30, 2004 and granted September 29, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 30, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2026.
  • 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 30, 2004
GrantedSeptember 29, 2015
Term endedJanuary 30, 2024
Patent numberCA 2776988 C
Classification (IPC)G10L19/03

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJan 30, 2004Patent grantedSep 29, 2015Term endedJan 30, 2024

Sources & verification

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