Clamp signal processing apparatus
CA 1292061 C · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Kawahara, Isao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a clamp signal processing apparatus,relating to a signal processing apparatus for multiplexing and transmitting a video signal and a direct-current level reference signal of this viedo signal. The apparatus comprises a clamp circuit for clamping an input signal at a specified directcurrent level, an A/D converter for converting the output of this clamp circuit from analog to digital in a specified sample period, a digital filter for applying an operation of a specified frequency characteristic to a signal corresponding to the direct-current level reference signal of the input signal within the out put signal of this A/D converter a timing, generation circuit for controlling the …
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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 November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 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
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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.