Hybrid loudspeaker system, at option with one or more correction circuits
CA 1209926 A · Owner: N.V.Philips'Gloeilampenfabrieken · Inventors: Van Nieuwland, Jacob M.; Nieuwendijk, Joris A.M.; Van Gijsel, Wilhelmus D.A.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hybrid loudspeaker system, at option with one or more correction circuits. In a loudspeaker system for converting an n-bit digitized electric signal (6) into an acoustic signal a plurality of sections (voice coils 14.1 14.2 14.3, 14.p) of a digital loudspeaker (1) are driven directly by the p most significant bits of the n-bit digitized electric signal (6). The loudspeaker (1) comprises at least one additional section (14.p+1). This (p+1)th voice coil receives a signal from a digital-to-analog converter (5) the input signal of the digilal-to-analog converter comprising at least the n-p least significant bits (Fig. 2). In a different embodiment the digital-to-analog converter (5) receives …
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 August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2003.
- 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.