Transverse digital filter
CA 1068357 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Eggermont, Ludwig D.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital filter for generating digital output signals from information signals in accordance with a pre-determined transfer characteristic. The device contains at least one coefficient number generator for supplying digital numbers which indicate the values of coefficient which represents the transfer characteristic. The coefficient number generator comprises a storage device, arranged for storing increments of successive coefficient values in numerical form and a, decoder connected to the storage device of recovering the coefficient numbers from the numbers stored in the storage device.
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 December 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 18, 1996.
- 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.