High performance half-rate encoding apparatus and method for a tdm system
CA 2346104 A1 · Owner: Ericsson, Inc. · Inventors: Khayrallah, Ali S.; Koilpillai, R. David; Fulghum, Tracy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a transmitter for transmitting communication signals across a radio channel, an improved encoder includes a half-rate encoder receiving a digitzed speech signal and generating a compressed bit stream at half-rate and a , signal expander receiving the compressed bit stream and generating an expanded bit stream at full-rate for transmission across a radio channel. An improved receiver, receives the transmitted communication signal which is selected from the group consisting of (a) a conventional full-rate encoded digitized speech signal, and (b) a half-rate encoded digitized speech signal including the expanded bit stream. The improved receiver includes a full-rate equalizer a , …
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 October 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2021.
- 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.