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Expired Canadian patentCanada

Signal recording apparatus and method

CA 1265613 C · Owner: Sasaki, Takayuki · Inventors: Iijima, Koji; Ueno, Katuhiko; Sasaki, Takayuki

CIPO record

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

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Abstract From the Canadian patent

Described is a method and a recording apparatus whereby audio and video signals can be recorded on a plurality of recording tracks on the same recording medium. A series of temporarily consecutive audio signals can be recorded across a plurality of tracks. On at least the audio track information signals, including the leading track number the next following, track number and the number of the video track bearing the corresponding video signals, are recorded. The track number data of the information signals on these audio tracks are written in corresponding positions of a digital, table memory. These control code data are recorded on a predetermined control track on the recording medium such …

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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 February 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 14, 1986
GrantedFebruary 6, 1990
Term endedFebruary 6, 2007
Patent numberCA 1265613 C
Classification (IPC)H04N5/78 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedOct 14, 1986Patent grantedFeb 6, 1990Term endedFeb 6, 2007

Sources & verification

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