Disc-shaped information recording medium, recording method and reproduction method thereof, information recording device, and information reproduction device thereof
CA 2494912 A1 · Owner: Panasonic Corporation · Inventors: Bannai, Tatsushi; Yoshida, Shuichi; Kishimoto, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reproduction standard model for guaranteeing real time recording on a discshaped information recording medium includes a pickup (102) for reading out real time data from the disc-shaped information recording medium a buffer , memory (103) for temporarily holding the real time data which has been read out by the pickup, and a decoding module (104) for reading out the real time data from the buffer memory (103) and processing the data. The access time Tacc of the reproduction standard model is represented by the equation as follows: Tacc = A.cndot.dN + Trev + B wherein dN is a difference in the rpm of the disc-shaped recoding medium, Trev is a rotation wait time at the access target …
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 August 4, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 2025.
- 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.