Inventor
SASAKI EISAKU
JP33 patents
⚠️ This page may combine multiple inventors who share the name “SASAKI EISAKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
24 patentsUS6127897AOct 3, 2000
Zero-crossing detection type clock recovery circuit operated at symbol rate
NEC CORP20 citations92
US6121828ASep 19, 2000
Demodulator
NEC CORP41 citations92
US5789988AAug 4, 1998
Clock recovery circuit for QAM demodulator
NEC CORP48 citations92
US5408499AApr 18, 1995
Multilevel code for transmission device
NEC CORP32 citations92
US5031133AJul 9, 1991
FIR digital filter for high-speed communications systems
NEC CORP30 citations92
US5570379AOct 29, 1996
Coded modulation apparatus
NEC CORP41 citations91
US6570441B1May 27, 2003
Incoherent demodulator and method of incoherently demodulating an IF signal
NEC CORP17 citations84
US6512473B2Jan 28, 2003
Clock synchronizing circuit
NEC CORP13 citations84
US6411658B1Jun 25, 2002
Demodulation device
NEC CORP19 citations84
US6624691B1Sep 23, 2003
Demodulator for processing digital signal
NEC CORP9 citations74
US4864244ASep 5, 1989
Stepped square-QAM demodulator utilizing all signal points to generate control signals
NEC CORP20 citations74
US4837782AJun 6, 1989
CMI decoder
NEC CORP7 citations74
US9136979B2Sep 15, 2015
Carrier wave reproduction device and carrier wave reproduction method
NEC CORP4 citations73
US11438032B2Sep 6, 2022
OAM reception apparatus, OAM reception method, and OAM transmission system
NEC CORP2 citations70
US5912827AJun 15, 1999
Digital filter with low rolloff factor
NEC CORP6 citations63
US5825828AOct 20, 1998
Method and apparatus for multi-level quadrature amplitude modulation
NEC CORP4 citations63
US11362440B2Jun 14, 2022
Antenna device, wireless transmitter, wireless receiver, and wireless communication system
NEC CORP1 citations60
US11159211B2Oct 26, 2021
Radio transmission device, baseband processing device, radio transmission method, and radio reception device
NEC CORP0 citations60
US12261686B2Mar 25, 2025
Control apparatus, OAM mode-multiplexing transmitting apparatus, OAM mode-multiplexing receiving apparatus, control method, and non-transitory computer readable medium
NEC CORP0 citations52
US9876668B2Jan 23, 2018
Communication apparatus, demodulation apparatus, carrier reproduction apparatus, phase error compensation apparatus, phase error compensation method, and storage medium on which phase error compensation program has been stored
NEC CORP0 citations52
US11290154B2Mar 29, 2022
Control device, delay difference adjustment method, and non-transitory computer readable medium for storing delay difference adjustment program
NEC CORP0 citations49
US10998948B2May 4, 2021
OAM reception apparatus, OAM reception method, and OAM transmission system
NEC CORP0 citations49
US11929865B2Mar 12, 2024
Signal modulation apparatus and signal modulation method
NEC CORP0 citations42
US10763973B2Sep 1, 2020
Phase noise compensation apparatus, demodulation apparatus, communication apparatus, communication system, and phase noise compensation method
NEC CORP0 citations41
SASAKI EISAKU
5 patentsUS8787478B2Jul 22, 2014
Wireless communication system, receiving apparatus, transmitting apparatus, wireless communication method, receiving method, and transmitting method
SASAKI EISAKU4 citations71
US8675771B2Mar 18, 2014
Log likelihood ratio arithmetic circuit, transmission apparatus, log likelihood ratio arithmetic method, and program
SASAKI EISAKU0 citations51
US8527847B2Sep 3, 2013
Channel switching signal generating circuit and channel switching signal generating method
SASAKI EISAKU0 citations51
US8086259B2Dec 27, 2011
Radio communication apparatus, radio communication system and radio communication method
SASAKI EISAKU1 citations45
US8675778B2Mar 18, 2014
Carrier recovery circuit and demodulation circuit under quasi-coherent detection method
SASAKI EISAKU0 citations40