Frame alignment of tributaries of a t.d.m. bit stream
CA 1253639 A · Owner: Northern Telecom Limited · Inventors: Littlewood, Paul A.; Graves, Alan F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A T.D.M. BIT STREAM Abstract of the Disclosure, A frame alignment method and apparatus are disclosed for aligning the t.d.m. frames of tributaries each including channel, bytes synchronously multiplexed with a frame synchronizing byte which are byte-interleaved to form overall t.d.m. frames identified by a frame synchronizing word, the tributaries having arbitrary frame phases with respect to one another. A channel counter is reset in response to the frame synchronizing word and for each, tributary in response to the frame synchronizing byte the count of the channel counter is used to determine an offset value which is stored in a memory. Each byte of each tributary is stored in a RAM at an …
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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 2, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 2, 2006.
- 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.