A method of improving data compression over unreliable underlying networks
CA 2260289 A1 · Owner: At&T Corp. · Inventors: Bellovin, Steven Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method provides for improved compression techniques over inherently unreliable underlying networks. A fixed compression dictionary is sent from a first, terminal to a second terminal during the start up of a communications session between the terminals. The first terminal then compresses data in accordance with, the transmitted fixed dictionary. The receiving terminal expands the compressed, data in accordance with the received fixed dictionary. If packets are lost over the, network such loss does not have a deleterious effect on the compression algorithm as, in known adaptive compression techniques.
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 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2021.
- 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.