Inventor
AKIE KAZUYOSHI
JP9 patents
Patents
9 patentsUS7489678B2Feb 10, 2009
Voice packet communications system with communications quality evaluation function
OKI ELECTRIC IND CO LTD5 citations73
US7123607B2Oct 17, 2006
Quality control device for voice packet communications
OKI ELECTRIC IND CO LTD8 citations73
US6885659B2Apr 26, 2005
Voice packet communications system with communications quality evaluation function
OKI ELECTRIC IND CO LTD11 citations73
US7924824B2Apr 12, 2011
Voice packet communications system with communications quality evaluation function
OKI ELECTRIC IND CO LTD1 citations62
US7231036B2Jun 12, 2007
Anti-howling circuit detecting howling from effect of predicted echo signal
OKI ELECTRIC IND CO LTD6 citations60
US7961855B2Jun 14, 2011
Voice communications apparatus
OKI ELECTRIC IND CO LTD0 citations51
US7848495B2Dec 7, 2010
Voice communication apparatus
OKI ELECTRIC IND CO LTD1 citations51
US7792255B2Sep 7, 2010
Voice communications apparatus
OKI ELECTRIC IND CO LTD0 citations51
US6826496B2Nov 30, 2004
Circuitry for and a method of detecting tonal signals with the processing capacity distributed with weight to frequency and time domains
OKI ELECTRIC IND CO LTD0 citations41