Decoding method for t1 line format for ccitt 32k bit per second adpcm clear channel transmission and 64 kbps clear channel transmission
CA 1301931 C · Owner: Blondeau, Ernest E. Jr. · Inventors: Blondeau, Ernest E. Jr.; Czarnecki, Stephen J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present method is a decoding scheme for suppressing excessive amount of zeroes transmitted via a Tl line facility. Clear channel transmission capability is provided by this scheme for 32 kb/s or 64 kb/s transmission channels. This scheme provides the proper zero bit suppression for alternating mark inversion signaling (AMI). A proper AMI signal contains no more then 15 consecutive zero bit positions. In addition to meeting the AMI signaling standards, this scheme does not induce any violations of VMR (violation monitor and removal) equipment. Thus this scheme is transparent to existing line equipment and error monitoring equipment. This scheme provides both a necessary and sufficient …
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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
- Granted May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
- 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.