The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2014
Filed:
Feb. 05, 2008
Applicant:
Risberg Par Gunnars, Rydsvägen, SE;
Inventor:
Risberg par Gunnars, Rydsvägen, SE;
Assignee:
Actiwave AB, , SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 99/00 (2009.01); G06F 17/00 (2006.01); H04S 7/00 (2006.01); H03F 3/68 (2006.01); H04R 27/00 (2006.01); H04R 3/14 (2006.01); G06F 1/26 (2006.01);
U.S. Cl.
CPC ...
H04R 27/00 (2013.01); H04S 7/30 (2013.01); H04R 3/14 (2013.01); H03F 3/68 (2013.01); G06F 1/266 (2013.01); H04R 2227/003 (2013.01); H03F 2200/03 (2013.01);
Abstract
A home use sound reproduction system for Hi-fi, with digital signal transfer from a playback unit via a control unit to one or more active loudspeakers, each including or arranged beside an amplifier unit. The control unit is arranged to control sound parameters and send both a digital sound information signal and a power signal for powering the amplifier units, and to superimpose the single ended or differential digital signal together with the power signal on at least one common lead in a cable.