Inventor
KOYAMA TAKAAKI
JP22 patents
⚠️ This page may combine multiple inventors who share the name “KOYAMA TAKAAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
7 patentsUS6974217B2Dec 13, 2005
Projector executing keystone correction
SEIKO EPSON CORP63 citations95
US6932481B2Aug 23, 2005
Projection display system, projector and menu image display method for same
SEIKO EPSON CORP29 citations92
US6840625B2Jan 11, 2005
Projection display system, projector and menu image display method for same
SEIKO EPSON CORP27 citations92
US9875525B2Jan 23, 2018
Image processing device, projector, and image processing method
SEIKO EPSON CORP0 citations51
US9715285B2Jul 25, 2017
Position detection apparatus and position detection method
SEIKO EPSON CORP1 citations51
US9632616B2Apr 25, 2017
Interactive system, control method for interactive system, and projector
SEIKO EPSON CORP1 citations51
US10321106B2Jun 11, 2019
Position detection apparatus and contrast adjustment method used with the same
SEIKO EPSON CORP0 citations41
NIPPON TELEGRAPH & TELEPHONE
6 patentsUS11016707B2May 25, 2021
Control device, control method, and recording medium to detect a state of access to table data and set a writing destination
NIPPON TELEGRAPH & TELEPHONE0 citations62
US10972490B2Apr 6, 2021
Specifying system, specifying device, and specifying method
NIPPON TELEGRAPH & TELEPHONE1 citations59
US10616270B2Apr 7, 2020
Optimization apparatus, optimization method, and optimization program
NIPPON TELEGRAPH & TELEPHONE1 citations59
US11176252B2Nov 16, 2021
Intrusion prevention device, intrusion prevention method, and intrusion prevention program
NIPPON TELEGRAPH & TELEPHONE0 citations50
US11050776B2Jun 29, 2021
Security measure invalidation prevention device, security measure invalidation prevention method, and security measure invalidation prevention program
NIPPON TELEGRAPH & TELEPHONE0 citations48
US10181031B2Jan 15, 2019
Control device, control system, control method, and control program
NIPPON TELEGRAPH & TELEPHONE0 citations37
NTT INC
4 patentsUS12493476B2Dec 9, 2025
Monitoring device, monitoring method, and monitoring program
NTT INC0 citations51
US12524292B2Jan 13, 2026
Analysis device, analysis method, and analysis program
NTT INC0 citations47
US12438787B2Oct 7, 2025
Analysis device, analysis system, analysis method, and analysis program
NTT INC0 citations47
US12506752B2Dec 23, 2025
Traffic sensor, analysis method, and analysis program
NTT INC0 citations44
KOYAMA TAKAAKI
3 patentsUS8817351B2Aug 26, 2014
Optical deflector including piezoelectric sensor on fixed frame
KOYAMA TAKAAKI8 citations82
US8922861B2Dec 30, 2014
Two-dimensional optical deflector apparatus using curved-type saw-tooth drive voltages
KOYAMA TAKAAKI5 citations71
US8573781B2Nov 5, 2013
Projector and control method for the same
KOYAMA TAKAAKI5 citations71