Reduced speed equalizer
CA 2124709 C · Owner: American Telephone And Telegraph Company · Inventors: Wei, Lee-Fang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reduced speed equalizer is provided which receives signal samples at a first rate but performs the equalizing operation at a second lower rate which is below the rate at which symbols are transmitted across the channel. The equalizer is clocked to receive samples in a shift register at the first rate. Samples stored in the shift register are clocked into a set of buffers at the second rate. The equalizer coefficients are applied to the samples stored in the buffer set to generate a sequence of equalized symbols at the second rate.
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 May 31, 1994 and granted June 9, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2016.
- 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.