Image signal compressor
CA 1257685 A · Owner: Sony Corporation · Inventors: Yamamoto, Isamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The image signal compressor comprises in, particular, a controller for adjusting the compression start potential in such a way as to decrease it with increasing highest peak voltage level of three chrominance signals to be compressed, in addition to three first resistors, three diodes and three second resistors. Therefore, even if one of three chrominance signals rises excessively high, it is possible to always compress the chrominance signals below a predetermined level without limitation by limiter circuits thus, preventing the chrominance signal having an excessively high peak voltage level from being regenerated in white on a cathode-ray tube. The signal compressor is applicable to a …
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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 July 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 18, 2006.
- 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.