Picture quality indicator for satellite broadcasting receiver
CA 1293798 C · Owner: Kuboki, Mitsugu · Inventors: Yoshimura, Yoshikazu; Shizuya, Osamu; Omoto, Noriaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Picture quality indicator for a satellite broadcasting receiver comprising an FM-demodulator for demodulating the satellite broadcasting signal, a band-pass filter for extracting a noise component from the output signal of the FM demodulator thereby removing TV signal components, an amplifier for amplifying the noise component a detection, circuit for detecting and outputting the amount of the noise component output from the amplifier, and a level indicator for indicating a value corresponding to a CN ratio of the TV signal obtained on the basis of the output of the detection circuit. The invention enables accurate orientation of the antenna, since the level indicator provides an indication …
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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
- Granted December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2008.
- 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.