Digitally controlled oscillator
CA 1078473 A · Owner: Hollandse Signaalapparaten B.V. · Inventors: Bergman, Jan; Luidens, Klaas J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digitally Controlled oscillator is provided with a memory storing the half periods Ti (i = 1, 2, ... n) of corresponding frequencies fi=? to be generated, and with a digital feedback circuit, in which circuit the half periods taken from memory are decreased by a fixed time value ? on a time sharing basis and in which circuit, as soon as the obtained residual values .DELTA.i,1=Ti-ki,1?<?, these residual values are increased by the corresponding half periods Ti also on a time sharing basis and each value so increased is repeatedly decreased by the fixed time ?. On repeating this process j times the residual, values can be expressed by: .DELTA.i,j=Ti + .DELTA.i,j-1-ki,j? where, each ki,j is …
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 May 27, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 1997.
- 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.