Inventor
FURUYA YUKITSUNA
JP32 patents
⚠️ This page may combine multiple inventors who share the name “FURUYA YUKITSUNA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
25 patentsUS5577087ANov 19, 1996
Variable modulation communication method and system
NEC CORP321 citations99
US5420863AMay 30, 1995
Mobile communication system with cell-site switching for intra-cell handoff
NEC CORP172 citations99
US7099268B2Aug 29, 2006
Orthogonal frequency division multiplex modem circuit
NEC CORP69 citations98
US5745858AApr 28, 1998
Base station transmitter/receiver capable of varying composite directivity of antennas
NEC CORP99 citations98
US5809019ASep 15, 1998
Transmisson diversity system
NEC CORP85 citations96
US5319795AJun 7, 1994
Cellular mobile communications system using frequencies commonly shared by neighboring cells for handoff operations
NEC CORP85 citations96
US5157661AOct 20, 1992
Handoff method for cellular digital mobile communication system and mobile station
NEC CORP60 citations96
US4747101AMay 24, 1988
Method of determining optimal transmission channel in multi-station communications system
NEC CORP71 citations96
US4888767ADec 19, 1989
Repeat request signal transmission method for multi-station packet communication
NEC CORP110 citations95
US5444721AAug 22, 1995
Maximum likelihood sequence estimation apparatus
NEC CORP24 citations93
US5303226AApr 12, 1994
Reception of TDMA digital data signal with compensation for channel variations
NEC CORP35 citations93
US5272726ADec 21, 1993
Blind type sequence estimator for use in communications system
NEC CORP22 citations93
US6363100B1Mar 26, 2002
Radio data communication system using spread spectrum scheme
NEC CORP26 citations92
US5363411ANov 8, 1994
Low power consumption receiver with adaptive equalizer
NEC CORP32 citations92
US4764920AAug 16, 1988
Packet transmission system
NEC CORP41 citations92
US4742568AMay 3, 1988
Receiver for antenna switching diversity systems
NEC CORP31 citations92
US5748668AMay 5, 1998
Spread spectrum method for transmitting an information signal as a radio signal at a high speed
NEC CORP17 citations90
US5625639AApr 29, 1997
Spread spectrum method for transmitting an information signal as a radio signal at a high speed
NEC CORP23 citations90
USRE36309ESep 21, 1999
Handoff method for cellular digital mobile communication system and mobile station
NEC CORP5 citations74
US5590404ADec 31, 1996
Base station transmission-reception apparatus for cellular system
NEC CORP15 citations74
US5442803AAug 15, 1995
Half duplex communication system having quick channel assignments
NEC CORP7 citations74
US5272447ADec 21, 1993
Demodulator and demodulation method for a digital phase modulated signal
NEC CORP7 citations74
US5101503AMar 31, 1992
Method of connecting channels of decentralized radio systems
NEC CORP14 citations74
US7843803B2Nov 30, 2010
Orthogonal frequency division multiplex modem circuit
NEC CORP0 citations52
US7395486B2Jul 1, 2008
Image communication system using a hierarchical code comprised of a plurality of layers
NEC CORP0 citations42
NIPPON ELECTRIC CO
3 patentsUS4367555AJan 4, 1983
Digital equalizer for a cross-polarization receiver
NIPPON ELECTRIC CO34 citations92
US4168398ASep 18, 1979
Initial acquisition signal detection system for TDMA satellite communication
NIPPON ELECTRIC CO19 citations73
US4327440AApr 27, 1982
Signal detector for use in digital communication
NIPPON ELECTRIC CO18 citations72