Information recording-reproducing method and apparatus
CA 1311558 C · Owner: Ogino, Tsukasa · Inventors: Taniwa, Shigeyuki; Ogino, Tsukasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An information recording-reproducing method comprises the step of imparting an error correction code of M bytes and N bytes in a vertical direction and a horizontal direction, respectively, to data of m x n bytes, and producing a signal of (m + M) x (n + N) bytes (m, n, M and N being 1 or greater integer) the step of, writing into a recording medium the signal to which the error correction code has been imparted the step of, reading out the written-in signal from the recording medium, the step of effecting error correction on the read-out signal in only one of the vertical direction and the horizontal direction by the use of the error correction code included in the signal the step of, …
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 December 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 2009.
- 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.