Tv signal transmission system and method
CA 1331401 C · Owner: Citta, Richard W. · Inventors: Citta, Richard W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The analog implementation of a television signal transmission system includes a line integrator for developing a first analog signal corresponding to low frequency components that is, the average level of active video below 15 KHz during each horizontal line of signal. An A/D converter produces a digital value corresponding to the first analog signal and a D/A converter develops a second analog signal corresponding to the digital value. The second analog signal is subtracted from the baseband video signal to develop the high frequency components of the video signal. The digital value is encoded in the horizontal blanking interval of the high frequency components which is modulated onto an …
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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 August 9, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 9, 2011.
- 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.