Device and method of signal loss recovery for realtime and/or interactive communications
CA 2176484 C · Owner: Motorola Mobility, Inc. · Inventors: Zhu, Qin-Fan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a signal loss recovery device (400) and method for digitally encoded bitstreams produced by predictive encoders, for realtime and/or interactive communications. The signal loss recovery device (400) recovers the lost or damaged information by sending a retransmission request for the lost information from transmission receiver (302). Compared to the previously known retransmission technique, this device does not introduce extra buffer delay. The elimination of this buffer delay is realized by continuously processing the received data while waiting for the arrival of the retransmission. The information is reinserted into the error corrupted signal to restore 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 August 22, 1995 and granted November 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2017.
- 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.