Patent Yard Sign in
Expired Canadian patentCanada

System and circuits for television signal processing

CA 1281127 C · Owner: Modena, Marco · Inventors: Peruta, Roberto; Cucchi, Silvio; Modena, Marco

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A color television signal, whether in PAL or NTSC can be efficiently encoded by unidimensional or bidimensional transform using a variable frequency sampling clock with digital processing of the sampled signal. One single analog signal can be changed therefore into three signals having statistical characteristics similar to color signal components, which in the case of PAL are Y U, V. Encoding, through the transform of the signals permits high compression of the information to be transmitted. Further there is uniformity in treating the composite signal and the component signals with identical hardware.

Read the whole patent

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 March 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 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.
FiledDecember 17, 1987
GrantedMarch 5, 1991
Term endedMarch 5, 2008
Patent numberCA 1281127 C
Classification (IPC)H04N9/04 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedDec 17, 1987Patent grantedMarch 5, 1991Term endedMarch 5, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.