Audio metadata verification
CA 2604817 C · Owner: Crockett, Brett Graham · Inventors: Crockett, Brett Graham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital bitstream, comprising data bits representing audio metadata , intended to be correct for the audio and metadata verification information, wherein all or part of the metadata may not be correct for the audio. The metadata verification information is usable to detect whether or not metadata is correct for the audio and, if not correct to change it so that it is , correct. The metadata verification information usable to detect and change metadata may include a copy, or a data-compressed copy of a correct version , of the metadata.
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 March 23, 2006 and granted June 16, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.