Sonet receive signaling translator
CA 2016503 C · Owner: Williams, Timothy James · Inventors: Baydar, Ertugrul; Williams, Timothy James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The four signaling bits contained in the eight-bit SONET signaling bytes are read from the SONET signaling row and are converted to four parallel signaling bits for storage in a RAM in quasi SONET format with sets of four A, four B, four C and four D bits for four consecutive channels being stored for an even and an odd tributary in one RAM memory row. Storing sets of four of the same bit for four consecutive channels simplifies the RAM write operation. A read-modify-write system is used for updating the RAM storage, wherein a row of RAM is read, modified by eight new signaling bits from two consecutive SONET signaling bytes and is rewritten into the RAM. New signaling bits are stored to …
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 May 10, 1990 and granted October 21, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2012.
- 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.