Improvement in communication between data processing apparatus and peripheral device thereof
CA 2176940 C · Owner: Kawase, Yasuhisa · Inventors: Niizuma, Naoki; Koizumi, Masahiro; Kawase, Yasuhisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A peripheral device, for use with a data processing apparatus. The, apparatus has a peripheral port with a set of terminal, pins consisting of first to ninth pins disposed in, a row. The first pin is assigned for one of a power, source and the ground potential, the ninth pin, for the other of the power source and the ground, potential, the second third, seventh and eighth pins for, transmitting data signals and the fourth to sixth pins, for transmitting control signals. The apparatus has, an element for selecting the communication mode of the, peripheral device connected to the peripheral port, based on the data signals transmitted from the second, third, seventh and eighth pins. The …
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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 October 11, 1995 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2017.
- 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.