Inventor
ISHIKAWA HIROYOSHI
JP82 patents
⚠️ This page may combine multiple inventors who share the name “ISHIKAWA HIROYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
40 patentsUS6552609B2Apr 22, 2003
Signal distortion compensating apparatus and method
FUJITSU LTD64 citations96
US7551687B2Jun 23, 2009
Distortion compensating apparatus
FUJITSU LTD21 citations93
US7551905B2Jun 23, 2009
Distortion compensation apparatus
FUJITSU LTD21 citations93
US7106249B2Sep 12, 2006
Phase calibration method and apparatus
FUJITSU LTD42 citations93
US7106133B2Sep 12, 2006
Distortion compensator
FUJITSU LTD23 citations93
US7012969B2Mar 14, 2006
Distortion compensating apparatus
FUJITSU LTD44 citations93
US6980604B2Dec 27, 2005
Transmission device and transmission method
FUJITSU LTD47 citations93
US6907085B2Jun 14, 2005
Activation method of communications apparatus with a non-linear distortion compensation device
FUJITSU LTD36 citations93
US6864745B2Mar 8, 2005
Distortion compensation device
FUJITSU LTD33 citations93
US6717464B2Apr 6, 2004
Distortion compensating apparatus
FUJITSU LTD33 citations93
US6657493B2Dec 2, 2003
Distortion compensation apparatus and distortion compensation method
FUJITSU LTD27 citations93
US6757525B1Jun 29, 2004
Distortion compensating apparatus
FUJITSU LTD44 citations91
US8009756B2Aug 30, 2011
Peak suppressing and restoring method, transmitter, receiver, and peak suppressing and restoring system
FUJITSU LTD7 citations84
US7860185B2Dec 28, 2010
Distortion compensating apparatus and power amplifier apparatus
FUJITSU LTD9 citations84
US7848449B2Dec 7, 2010
Offset compensation device
FUJITSU LTD9 citations84
US7839949B2Nov 23, 2010
Peak suppression method, peak suppression apparatus and wireless transmission apparatus
FUJITSU LTD15 citations84
US7804914B2Sep 28, 2010
Radio transmission apparatus having peak suppression function
FUJITSU LTD11 citations84
US7496152B2Feb 24, 2009
Adaptive control apparatus
FUJITSU LTD9 citations84
US7447485B2Nov 4, 2008
Device and method for controlling a voltage control signal
FUJITSU LTD12 citations84
US7388926B2Jun 17, 2008
Quadrature modulation system
FUJITSU LTD14 citations84
US11563464B2Jan 24, 2023
Signal processing device and inter-beam interference suppression method
FUJITSU LTD2 citations73
US10659124B2May 19, 2020
Multiantenna communication device and coefficient update method
FUJITSU LTD2 citations73
US9819370B2Nov 14, 2017
Distortion compensation device and distortion compensation method
FUJITSU LTD6 citations73
US9768891B2Sep 19, 2017
Distortion compensation device and distortion compensation method
FUJITSU LTD3 citations73
US9270231B2Feb 23, 2016
Distortion compensation apparatus, wireless transmission apparatus, and distortion compensation method
FUJITSU LTD6 citations73
US9225295B2Dec 29, 2015
Distortion compensation apparatus and distortion compensation method
FUJITSU LTD3 citations63
US9190964B2Nov 17, 2015
Distortion compensation device and distortion compensation method
FUJITSU LTD3 citations63
US7991073B2Aug 2, 2011
Distortion compensation apparatus and method
FUJITSU LTD4 citations63
US7969205B2Jun 28, 2011
Peak power reduction method
FUJITSU LTD5 citations63
US7881404B2Feb 1, 2011
Distortion correction control apparatus and distortion correction control method
FUJITSU LTD2 citations63
US7856069B2Dec 21, 2010
Distortion compensation apparatus
FUJITSU LTD2 citations63
US7782153B2Aug 24, 2010
Timing adjusting method and timing adjusting apparatus
FUJITSU LTD3 citations63
US7756216B2Jul 13, 2010
Signal peak voltage suppression apparatus
FUJITSU LTD5 citations63
US7746957B2Jun 29, 2010
Distortion correction control apparatus and distortion correction control method
FUJITSU LTD4 citations63
US7639755B2Dec 29, 2009
Distortion compensating apparatus
FUJITSU LTD5 citations63
US7447484B2Nov 4, 2008
Timing controller and timing control method
FUJITSU LTD4 citations63
US7392020B2Jun 24, 2008
Table reference type predistorter
FUJITSU LTD2 citations63
US12334964B2Jun 17, 2025
Wireless communication apparatus and distortion compensation method
FUJITSU LTD0 citations62
US11424774B2Aug 23, 2022
Wireless communication apparatus and coefficient updating method
FUJITSU LTD0 citations62
US10904060B2Jan 26, 2021
Peak suppression circuit, peak suppression method, and transmitter
FUJITSU LTD0 citations62
ISHIKAWA HIROYOSHI
4 patentsUS8154341B2Apr 10, 2012
Power amplifying apparatus
ISHIKAWA HIROYOSHI10 citations84
US8737937B2May 27, 2014
Distortion compensation apparatus, transmitter, and distortion compensation method
ISHIKAWA HIROYOSHI3 citations62
US8712345B2Apr 29, 2014
Distortion compensation device, distortion compensation method, and radio transmitter
ISHIKAWA HIROYOSHI3 citations62
US8619905B2Dec 31, 2013
Predistorter and distortion compensation method
ISHIKAWA HIROYOSHI4 citations62
NAGATANI KAZUO
3 patentsUS8933752B2Jan 13, 2015
Power amplifier apparatus, distortion compensation coefficient updating method, and transmission apparatus
NAGATANI KAZUO7 citations84
US8532223B2Sep 10, 2013
Power amplifying device and power amplifying method
NAGATANI KAZUO12 citations84
US8787487B2Jul 22, 2014
Distortion compensation device and distortion compensating method
NAGATANI KAZUO2 citations62
KYOSHO CORP
1 patentFUDABA NOBUKAZU
1 patentONKYO KK
1 patentShowing the top 50 of 82 patents by PatentIndex Score.