Inventor
ZHOU CHANGMING
JP47 patents
⚠️ This page may combine multiple inventors who share the name “ZHOU CHANGMING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YOZAN INC
34 patentsUS6038250AMar 14, 2000
Initial synchronization method and receiver for DS-CDMA inter base station asynchronous cellular system
YOZAN INC301 citations99
US6084922AJul 4, 2000
Waiting circuit
YOZAN INC102 citations98
US5812546ASep 22, 1998
Demodulator for CDMA spread spectrum communication using multiple pn codes
YOZAN INC105 citations98
US6512785B1Jan 28, 2003
Matched filter bank
YOZAN INC100 citations97
US6370130B1Apr 9, 2002
Spread spectrum communication system
YOZAN INC75 citations96
US6212219B1Apr 3, 2001
Spread spectrum communication system
YOZAN INC32 citations93
US5974038AOct 26, 1999
Receiver for code division multiple access communication system
YOZAN INC51 citations93
US5781584AJul 14, 1998
Code acquisition and tracking circuit using switched matched filter and sliding correlators
YOZAN INC43 citations93
US6081549AJun 27, 2000
Phase correction method and apparatus for spectrum spread wireless communication receiver
YOZAN INC21 citations92
US5956333ASep 21, 1999
Multi-user demodulator for CDMA spectrum spreading communication
YOZAN INC53 citations92
US5930290AJul 27, 1999
Spread spectrum communications system for high-speed communications
YOZAN INC26 citations92
US6169771B1Jan 2, 2001
Matched filter for spread spectrum communication systems and hybrid analog-digital transversal filter
YOZAN INC22 citations91
US6064690AMay 16, 2000
Spread spectrum communication system
YOZAN INC26 citations88
US6426949B1Jul 30, 2002
Signal reception apparatus for DS-CDMA communication system
YOZAN INC14 citations84
US6389438B1May 14, 2002
Matched filter and signal reception apparatus
YOZAN INC19 citations84
US6278724B1Aug 21, 2001
Receiver in a spread spectrum communication system having low power analog multipliers and adders
YOZAN INC16 citations83
US6563373B1May 13, 2003
Filter circuit utilizing a plurality of sampling and holding circuits
YOZAN INC11 citations74
US6539009B1Mar 25, 2003
Signal reception apparatus for DS-CDMA cellular system
YOZAN INC12 citations74
US6122654ASep 19, 2000
Complex multiplication circuit
YOZAN INC9 citations74
US5945875AAug 31, 1999
π/n shift phase-shift keying demodulator
YOZAN INC8 citations74
US5926512AJul 20, 1999
Matched filter circuit
YOZAN INC8 citations74
US5790590AAug 4, 1998
Matched filter circuit
YOZAN INC11 citations74
US6300823B1Oct 9, 2001
Filter circuit
YOZAN INC11 citations73
US6025752AFeb 15, 2000
Inverting amplifying circuit
YOZAN INC7 citations73
US6340942B1Jan 22, 2002
Analog to digital converter
YOZAN INC9 citations69
US6388583B1May 14, 2002
Method and circuit for codes generation
YOZAN INC12 citations66
US6263012B1Jul 17, 2001
Receiver apparatus for CDMA communication system
YOZAN INC4 citations63
US6094667AJul 25, 2000
Time spread root Nyquist filter
YOZAN INC4 citations63
US5958002ASep 28, 1999
Vector absolute--value calculation circuit
YOZAN INC3 citations63
US5872466AFeb 16, 1999
Matched filter circuit
YOZAN INC3 citations63
US5815021ASep 29, 1998
Weight addition circuit
YOZAN INC2 citations63
US6073149AJun 6, 2000
Computational circuit
YOZAN INC5 citations62
US5887024AMar 23, 1999
Matched filter
YOZAN INC4 citations62
US5841315ANov 24, 1998
Matched filter circuit
YOZAN INC4 citations61
NIPPON TELEGRAPH & TELEPHONE
6 patentsUS5910948AJun 8, 1999
Acquisition scheme and receiver for an asynchronous DS-CDMA cellular communication system
NIPPON TELEGRAPH & TELEPHONE133 citations98
US6031415AFeb 29, 2000
Matched filter circuit for spread spectrum communication
NIPPON TELEGRAPH & TELEPHONE14 citations74
US5848096ADec 8, 1998
Communication method and system using different spreading codes
NIPPON TELEGRAPH & TELEPHONE15 citations74
US5740096AApr 14, 1998
Filter circuit for communication
NIPPON TELEGRAPH & TELEPHONE10 citations74
US6240148B1May 29, 2001
Path-diversity receiving method and system of spread spectrum communication
NIPPON TELEGRAPH & TELEPHONE4 citations63
US5815812ASep 29, 1998
Soft handoff system of spread spectrum communication
NIPPON TELEGRAPH & TELEPHONE4 citations63
KOKUSAI ELECTRIC CO LTD
3 patentsUS5959875ASep 28, 1999
Analog signal characterizer for functional transformation
KOKUSAI ELECTRIC CO LTD15 citations74
US5930157AJul 27, 1999
Autocorrelation coefficient operator having analog circuit element
KOKUSAI ELECTRIC CO LTD9 citations74
US5844937ADec 1, 1998
Matched filter system
KOKUSAI ELECTRIC CO LTD5 citations63