Digital video signal reproducing apparatus with high-speed play mode
CA 2112430 C · Owner: Oikawa, Yuka · Inventors: Oikawa, Yuka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for reproducing digital video signals from a magnetic tape, wherein a frame of digital video signals had been recorded in 2m tracks (m is an integer greater than 1) in which, a pair of rotary heads having respectively different azimuth angles scan traces across the magnetic tape such traces, substantially coinciding with the tracks when the magnetic tape is transported at a speed equal to the recording speed. The magnetic tape is transported at a high speed equal to (m x n ~ ~) times the recording speed, where n is an integer greater than 0 ~ = 0.5 when the pair of heads are arranged as a double azimuth head assembly and ~ = 0.25 when the heads are angularly separated by 180°.
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
- Filed December 24, 1993 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2015.
- 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
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.