Randomly ordered data block envelope tape format
CA 2194822 A1 · Owner: Quantum Corporation · Inventors: Kaplan, Lawrence
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of writing data onto a magnetic tape storage medium in the form of data blocks and error correction code blocks. Data is received from a data source and formatted into data and error correction code blocks. Data entities are created from the data and error correction code blocks. Data envelopes are defined to include one or more such data entities. The data envelopes are sequentially written onto the magnetic tape medium. The data and error correction blocks within the data envelopes may be arranged in any order without regard to the physical channel or positional placement. Blocks containing user data and those containing internally generated error recovery information are freely …
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 January 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 2019.
- 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.