Inventor
HATAE KAZUHIKO
JP14 patents
⚠️ This page may combine multiple inventors who share the name “HATAE KAZUHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
11 patentsUS9401765B2Jul 26, 2016
Frequency offset estimation circuit and frequency offset estimation method
FUJITSU LTD5 citations71
US9374170B2Jun 21, 2016
Optical receiving device
FUJITSU LTD2 citations61
US7417792B2Aug 26, 2008
Optical amplification device
FUJITSU LTD4 citations61
US10560199B2Feb 11, 2020
Signal processing circuit and optical receiving device
FUJITSU LTD1 citations60
US9660733B2May 23, 2017
Signal processing apparatus, signal processing method, and signal processing system
FUJITSU LTD0 citations51
US7649482B2Jan 19, 2010
Signal modulation method, signal modulation apparatus, electronic device, and computer program product
FUJITSU LTD0 citations51
US10931485B2Feb 23, 2021
Adaptive equalization circuit and optical receiver
FUJITSU LTD0 citations50
US10177855B2Jan 8, 2019
Amplitude adjustment circuit, digital coherent receiver, and amplitude adjustment method
FUJITSU LTD0 citations50
US9496966B2Nov 15, 2016
Optical communication receiving device and frequency offset compensation method
FUJITSU LTD0 citations41
US9680667B2Jun 13, 2017
Adaptive equalization circuit, digital coherent receiver, and adaptive equalization method
FUJITSU LTD0 citations40
US8677296B2Mar 18, 2014
Circuit design support computer product, method, and apparatus
FUJITSU LTD0 citations39