Digital pulse width modulator
CA 1279727 C · Owner: Mccambridge, John M. · Inventors: Mccambridge, John M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital pulse width modulator for generating output frequencies with adjustable pulse widths that can he controlled by a microcomputer interface. A method to perform a DPWM chip select and to control the latching shifting and counting of DPWM counters and registers is also presented. This allows the traditional uses of PWMs to enter the realm of microcomputer systems.
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 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2008.
- 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.