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Expired Canadian patentCanada

Charge coupled device systems

CA 1065055 A · Owner: Rca Corporation · Inventors: Levine, Peter A.

CIPO record

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Abstract From the Canadian patent

Analog signals initially are stored in a linear array such as a charge coupled device (CCD) register. There is provided, for each stage of the linear array a different, column of a CCD matrix, termed here a B register. During a transfer interval, the analog charge signals concurrently are permitted to flow into the columns. As the stages in the B register have much smaller charge storage capacity than the stages in the linear array, the charge signal fills and then overflows successive potential wells of each column until an equilibrium condition is reached. At equilibrium the number of filled wells in a column will be proportional to the amplitude of the charge signal supplied to that …

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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 October 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 23, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedOctober 23, 1979
Term endedOctober 23, 1996
Patent numberCA 1065055 A
Classification (IPC)H03M1/44 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedOct 23, 1979Term endedOct 23, 1996

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