Common bus control method
CA 2007644 C · Owner: Hisada, Isao · Inventors: Hisada, Isao; Kondo, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a common bus control method, transmission and reception buses are connected to a unit having a unit number 1. A synchronization frame head signal for time-division slots of common buses is sequentially supplied to the units in the order of the unit numbers 1 to n through delay circuits. Phase correcting circuits are respectively connected to the transmission and reception buses of each unit so as to perform phase correction of data on the buses and latch signals for latching the data. The delay circuit arranged in each unit sets transmission delay data having an inherent delay difference on the basis of the synchronization frame head signal. An output from the delay circuit of each unit …
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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
- Filed January 12, 1990 and granted September 10, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 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
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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.