Method for requesting service by a device which generates a service request signal successively until it is serviced
CA 1294710 C · Owner: Apple Computer, Inc. · Inventors: Clark, Mike; Ashkin, Peter B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention discloses a method for requesting service by a device coupled to a host computer through a communication medium. The method comprises monitoring a command from the host computer, generating a service request signal on the medium after the command and repeating the, steps until the device receives a command which services the device. This is an efficient method for providing a means for peripheral devices to indicate a need for servicing to the host computer.
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
- Granted January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2009.
- 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.