Image coding system capable of monitoring an amount of information by forming a histogram
CA 1312669 C · Owner: Kokusai Denshin Denwa Co. Ltd · Inventors: Mukawa, Naoki; Matsuda, Kiichi; Koga, Toshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an image coding system having a plurality of coding characteristics, such as quantization characteristics, a coding control circuit (21) selects either one of the coding characteristics by forming a histogram in response to a sequence of coefficients resulting from a sequence of digital image signals to, monitor an amount of information in every one of predetermined intervals. The amount of information is calculated by summing up the coefficients in relation to every one of the coding characteristics. An optimum one of the coding characteristics is indicated by the coding control circuit to code the coefficient sequence into a sequence of coded signals in accordance with the optimum …
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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 January 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2010.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.