System and method for error correction in high definition tv signal
CA 2597180 C · Owner: Iwamura, Ryuichi · Inventors: Kawaski, Kenichi; Iwamura, Ryuichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An input signal such as a HDTV signal is split into a primary signal which , can be decoded if desired, and an secondary signal which can remain , compressed. The primary signal may be delayed and then both signals are transmitted to a receiver. If no error in the primary signal is detected the , primary signal is used to display data. Otherwise the secondary signal, which , arrives before the primary signal and consequently which is available for substitution, is displayed.
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 12, 2006 and granted February 25, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 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.