Digital data radio transmission system
CA 2050656 C · Owner: Fujitsu Limited · Inventors: Suzuki, Eiji; Suzuki, Kazuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital data radio transmission system for reproducing pre-velocity-modulation input frame data from the radio frame data subjected to velocity modulation and pulse insertion. The system includes a write counter that divides write clock pulses under control of frame position pulses to output write pulses; an elastic memory that temporarily stores the input frame data and the frame position pulses as per the write pulses; and a timing pulse generator that outputs control pulses in response to the supply of read clock pulses under control of the frame position pulses from the elastic memory. The system further comprises a read counter that divides the write clock pulses by the same number …
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 September 4, 1991 and granted October 11, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2013.
- 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.