Data recording method and data recording device using same
CA 2335666 A1 · Owner: Nagaishi, Yuji · Inventors: Yoshiura, Tsukasa; Nagaishi, Yuji; Yamamura, Toshiki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data recording device, using a disc, wherein it is easy to handle respective audio signals independently and which receives digital data got by multiplexing plural audio signals is provided. In a data recording device according to the present invention data blocks are identified in the frame unit from among received digital data and, at least the first audio block, and the second audio block are generated from among the data blocks so that each audio block is recorded from the leading address of the recording segment formed on the disc.
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 February 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2023.
- 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.