P

Inventor

KOSHINAKA TAKAFUMI

JP53 patents
⚠️ This page may combine multiple inventors who share the name “KOSHINAKA TAKAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NEC CORP

39 patents
US6671417B1Dec 30, 2003

Character recognition system

NEC CORP19 citations84
US6115506ASep 5, 2000

Character recognition method, character recognition apparatus and recording medium on which a character recognition program is recorded

NEC CORP12 citations74
US11250860B2Feb 15, 2022

Speaker recognition based on signal segments weighted by quality

NEC CORP2 citations73
US9946921B2Apr 17, 2018

Monitoring device, monitoring method and monitoring program

NEC CORP2 citations72
US11817103B2Nov 14, 2023

Pattern recognition apparatus, pattern recognition method, and storage medium

NEC CORP2 citations71
US11798564B2Oct 24, 2023

Spoofing detection apparatus, spoofing detection method, and computer-readable storage medium

NEC CORP3 citations70
US11580967B2Feb 14, 2023

Speech feature extraction apparatus, speech feature extraction method, and computer-readable storage medium

NEC CORP2 citations70
US10867019B2Dec 15, 2020

Personal authentication device, personal authentication method, and personal authentication program using acoustic signal propagation

NEC CORP6 citations67
US12051424B2Jul 30, 2024

Audio processing apparatus, audio processing method, and computer-readable recording medium

NEC CORP0 citations63
US11837236B2Dec 5, 2023

Speaker recognition based on signal segments weighted by quality

NEC CORP0 citations63
US10490194B2Nov 26, 2019

Speech processing apparatus, speech processing method and computer-readable medium

NEC CORP1 citations63
US12248548B2Mar 11, 2025

Detection of attachment problem of apparatus being worn by user

NEC CORP0 citations62
US12248547B2Mar 11, 2025

Detection of attachment problem of apparatus being worn by user

NEC CORP0 citations62
US12248550B2Mar 11, 2025

Detection of attachment problem of apparatus being worn by user

NEC CORP0 citations62
US12189745B2Jan 7, 2025

Acoustic personal authentication device, personal authentication method, and recording medium

NEC CORP0 citations62
US12175997B2Dec 24, 2024

Information processing device, wearable device, information processing method, and storage medium

NEC CORP0 citations62
US11977617B2May 7, 2024

Detection of attachment problem of apparatus being worn by user

NEC CORP0 citations62
US11928198B2Mar 12, 2024

Authentication device and authentication method

NEC CORP0 citations62
US11842741B2Dec 12, 2023

Signal processing system, signal processing device, signal processing method, and recording medium

NEC CORP0 citations62
US11734399B2Aug 22, 2023

Acoustic personal authentication device, personal authentication method, and recording medium

NEC CORP0 citations62
US11537695B2Dec 27, 2022

Detection of attachment problem of apparatus being worn by user

NEC CORP0 citations62
US11074329B2Jul 27, 2021

Authentication device and authentication method

NEC CORP0 citations62
US10614343B2Apr 7, 2020

Pattern recognition apparatus, method, and program using domain adaptation

NEC CORP1 citations61
US12067098B2Aug 20, 2024

Personal authentication device, personal authentication method, and recording medium

NEC CORP0 citations57
US11586716B2Feb 21, 2023

Personal authentication device, personal authentication method, and recording medium

NEC CORP0 citations57
US12562170B2Feb 24, 2026

Biometric authentication device, biometric authentication method, and recording medium

NEC CORP0 citations52
US12462809B2Nov 4, 2025

Voice registration device, control method, program, and storage medium

NEC CORP0 citations52
US12094450B2Sep 17, 2024

Speech processing device, speech processing method, and non-transitory computer readable medium storing program

NEC CORP0 citations52
US11437044B2Sep 6, 2022

Information processing apparatus, control method, and program

NEC CORP0 citations52
US10249306B2Apr 2, 2019

Speaker identification device, speaker identification method, and recording medium

NEC CORP0 citations52
US12216752B2Feb 4, 2025

Personal authentication device based on echo sounds, personal authentication method, and recording medium

NEC CORP0 citations51
US10803875B2Oct 13, 2020

Speaker recognition system and method of using the same

NEC CORP0 citations51
US9761248B2Sep 12, 2017

Action analysis device, action analysis method, and action analysis program

NEC CORP1 citations51
US12412592B2Sep 9, 2025

Hyper-parameter optimization system, method, and program

NEC CORP0 citations50
US11600273B2Mar 7, 2023

Speech processing apparatus, method, and program

NEC CORP0 citations50
US11403545B2Aug 2, 2022

Pattern recognition apparatus, method, and program

NEC CORP0 citations50
US12499896B2Dec 16, 2025

Learning device, method, and program

NEC CORP0 citations49
US12334080B2Jun 17, 2025

Neural network-based signal processing apparatus, neural network-based signal processing method, and computer-readable storage medium

NEC CORP0 citations49
US11900949B2Feb 13, 2024

Signal extraction system, signal extraction learning method, and signal extraction learning program

NEC CORP0 citations47

KOSHINAKA TAKAFUMI

5 patents

TERAO MAKOTO

3 patents

KITADE TASUKU

2 patents

NEC PLATFORMS LTD

1 patent

Showing the top 50 of 53 patents by PatentIndex Score.