Digital-to-analog converter
CA 1099412 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Ong, Kian K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHN.8170, 24.9.76, ABSTRACT:, A non-linear digital-to-analog conversion is obtained by passing a periodical pulse signal having a linear average value which depends on a digital value through a network having a different charge and discharge time constant and by smoothing it thereafter. -9-
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 April 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 1998.
- 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.