Global Patent Index - EP 1934667 B8

EP 1934667 B8 20160525 - A BOUNDED SIGNAL MIXER AND METHOD OF OPERATION

Title (en)

A BOUNDED SIGNAL MIXER AND METHOD OF OPERATION

Title (de)

EIN GEBUNDENER SIGNALMISCHER UND BETRIEBSVERFAHREN

Title (fr)

MELANGEUR DE SIGNAUX BORNE ET PROCEDE DE FONCTIONNEMENT

Publication

EP 1934667 B8 (EN)

Application

EP 06800928 A

Priority

  • US 2006030820 W
  • US 20915705 A

Abstract (en)

[origin: WO2007024468A2] A method and apparatus are provided for mixing a plurality of signals within a predetermined dynamic range without clipping. In the method and apparatus, first (x1) and second (x2) signal samples are added (12) together to obtain a first intermediate result. Then the first signal sample (x1) is multiplied (14) with the second signal sample (x2) to obtain a second intermediate result. In one embodiment, the second intermediate result is subtracted (16) from the first intermediate result to obtain a third intermediate result, and the third intermediate result is discarded (20) if the third intermediate result is less than zero. In another embodiment, the second intermediate result is added (36) to the first intermediate result to obtain the third intermediate result, and the third intermediate result is discarded (40) if the third intermediate result is greater than zero. An output signal sample (M) is provided based on the third intermediate result.

IPC 8 full level

G06F 1/02 (2006.01); H03D 7/00 (2006.01); H04B 1/00 (2006.01); H04B 1/20 (2006.01); H04H 60/04 (2008.01)

CPC (source: EP)

H03D 7/00 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2007024468 A2 20070301; WO 2007024468 A3 20071221; CN 101243373 A 20080813; CN 101243373 B 20120418; EP 1934667 A2 20080625; EP 1934667 A4 20131204; EP 1934667 B1 20160330; EP 1934667 B8 20160525; JP 2009505611 A 20090205; JP 4862045 B2 20120125; KR 101288794 B1 20130729; KR 20080046638 A 20080527; US 2007083580 A1 20070412; US 7869609 B2 20110111

DOCDB simple family (application)

US 2006030820 W 20060808; CN 200680030445 A 20060808; EP 06800928 A 20060808; JP 2008527950 A 20060808; KR 20087004290 A 20060808; US 20915705 A 20050822