Patent Yard Sign in
Expired Canadian patentCanada

Color signal demodulation apparatus

CA 1250363 A · Owner: Nec Corporation · Inventors: Suzuki, Norio

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 signal demodulation apparatus includes an A/D converter for converting a composite color television signal into a digital signal, a pulse generator for generating timing pulses and sampling clocks a Y/C, separator for separating the output from the A/D converter into a luminance signal and a carrier chrominance signal a, subcarrier generator for detecting the phase of the subcarrier from the color burst signal and a color signal, demodulator for obtaining baseband color signals. The apparatus of the invention requires no low-pass filter.

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 February 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 21, 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.
FiledAugust 6, 1986
GrantedFebruary 21, 1989
Term endedFebruary 21, 2006
Patent numberCA 1250363 A
Classification (IPC)H04N9/66 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedAug 6, 1986Patent grantedFeb 21, 1989Term endedFeb 21, 2006

Sources & verification

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