Television receiver with separate i-f amplifiers for vsb and qam digital tv signals that are digitally synchrodyned
CA 2266156 C · Owner: Samsung Electronics Co. Ltd. · Inventors: Limberg, Allen Leroy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radio receiver includes first and second intermediate-frequency amplifier chains, respectively supplying first and second final intermediate-frequency responses to a, digital television (DTV) signal selected for reception; first and second analog-to-digital converters for digitizing the first and second final intermediate-frequency responses; QAM synchrodyning circuitry for generating real, and imaginary sample streams of interleaved QAM symbol code by synchrodyning the digitized first final intermediate-frequency response to baseband providing the, selected DTV signal is a QAM signal; and VSB synchrodyning circuitry for generating a real sample stream of interleaved VSB symbol code by …
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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 18, 1999 and granted February 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 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
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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.