Digital signal decoding circuit and decoding method
CA 2012163 C · Owner: Toshiba Audio Video Engineering Co. Ltd. · Inventors: Goto, Tadamasa; Yamamoto, Kazuo; Koike, Shunsuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital signal decoding circuit of this invention includes a detection circuit, a reference signal generation circuit, and a discrimination circuit. The detection circuit detects central values of an amplitude in each bit of interest of a received digital signal. The reference signal generation circuit generates a reference signal having a signal value according to the central value detected by the detection circuit. The discrimination circuit compares the signal value of the received digital signal with a signal value of the reference signal generated by the reference signal generation circuit, thereby outputting a decoded binary signal.
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 14, 1990 and granted September 7, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2012.
- 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.