Optical record carrier and method for recording and reproducing signals therefrom
CA 2217005 C · Owner: Kabushiki Kaisha Toshiba · Inventors: Moriya, Mitsurou; Hirayama, Koichi; Tanaka, Shin-Ichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical record carrier (RC and RC') and methods and apparatuses for , recording and reproducing an information on and from said optical recording carrier (RC and RC'), whereby the effects of crosstalk from adjacent tracks (TR) is reduced, and stable tracing control is possible is achieved. A , recording track (TR) to which information (Sm) divided into sector units (S) is recorded is formed in a spiral or concentric pattern on the surface of the optical record carrier (RC and RC'). Each sector further comprises sixty frames (FRf). Each frame (FR) comprises a re-sync pattern (RS) frame address , (FA), data (INF), and postamble (PA) fields. Identification information (SA) …
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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
- Filed April 1, 1996 and granted February 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 1, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2018.
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