Inventor
KAKUISHI MITSUO
JP20 patents
Patents
20 patentsUS5659609AAug 19, 1997
Echo canceller and waveform-distortion compensation device
FUJITSU LTD109 citations98
US5617450AApr 1, 1997
Digital subscriber loop interface unit
FUJITSU LTD135 citations98
US5481564AJan 2, 1996
Received data adjusting device
FUJITSU LTD84 citations94
US6028902AFeb 22, 2000
Clock phase detecting circuit
FUJITSU LTD20 citations92
US5987071ANov 16, 1999
Digital modulator and digital demodulator
FUJITSU LTD25 citations92
US5781076AJul 14, 1998
Digital quadrature amplitude modulators
FUJITSU LTD27 citations92
US5638409AJun 10, 1997
Data receiving device for reproducing a received symbol from a received data signal
FUJITSU LTD49 citations92
US5375147ADec 20, 1994
Jitter compensating device
FUJITSU LTD53 citations92
US5287406AFeb 15, 1994
Hybrid circuit having a two-wire/four-wire converting function
FUJITSU LTD35 citations92
US5367540ANov 22, 1994
Transversal filter for use in a digital subscriber line transmission interface
FUJITSU LTD102 citations91
US5151937ASep 29, 1992
Adaptive echo canceller
FUJITSU LTD41 citations91
US5615235AMar 25, 1997
Signal processing system for use in a digital signal clock changing apparatus
FUJITSU LTD30 citations90
US4468749AAug 28, 1984
Adjustable attenuator circuit
FUJITSU LTD21 citations82
US6507625B2Jan 14, 2003
Digital modulator and digital demodulator
FUJITSU LTD6 citations74
US5471507ANov 28, 1995
Circuit for detecting object signal from input signal
FUJITSU LTD11 citations74
US5450452ASep 12, 1995
Digital loop filter and digital PLL circuit using the same
FUJITSU LTD18 citations74
US4333064AJun 1, 1982
Switched-capacitor filter
FUJITSU LTD13 citations74
US5399985AMar 21, 1995
Digital PLL circuit
FUJITSU LTD7 citations73
US5610943AMar 11, 1997
Signal processing apparatus
FUJITSU LTD15 citations71
US5249145ASep 28, 1993
Transforming adaptors for wave digital filter and balancing network using same
FUJITSU LTD1 citations52