Inventor

TAKAHASHI SEIGO

JP71 patents

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

TAKAHASHI SEIGO

NEC CORP

Bit synchronization circuit

Secret communications system and channel control method

Optical packet exchange system and optical switch

Packet switching network

Optical receiving circuit and optical communication device

Optical packet exchange system and optical switch

Optical packet exchange system and optical switch

Optical network

Method and apparatus for measuring optical power of very weak light, and optical communication system using the same

Optical communication device and quantum key distribution system using the same

Communication system and synchronization method thereof

Method and system for managing shared information

Equalizer, equalization method, and transmitter

Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer

Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer

Free space optical transmitter and free space optical communication method

Optical communication device, optical communication system, and optical communication method

Free space optical receiver and free space optical receiving method

Free space optical receiver and free space optical receiving method

Free space optical receiver and free space optical receiving method

MITUTOYO CORP

Capacitance-type displacement measuring device

Dimension measuring instrument

Micrometer

Dial gauge

Micrometer

Scale on an apparatus for measuring displacement

Linear actuator

Measuring device using multi-start threaded spindle

Displacement detecting apparatus

Output-attached measuring instrument

Micrometer that holds displayed displacement when retraction amount is less than a set amount

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Television receiver display layout

Monitor/television receiver

Television receiver

Television receiver

Cable television receiver

Monitor/television receiver

Digital CATV terminal

Monitor/television receiver

MAEDA WAKAKO

Communication system and timing control method

Method and device for managing cryptographic keys in secret communications network

Method and system for managing shared random numbers in secret communication network

TANAKA AKIHIRO

Circuit and method for controlling quality of random numbers

Quantum key distribution system, optical transmitter, optical modulation control circuit, and optical modulation control method

MITUTOYO MFG CO LTD

Contour measuring instrument

Displacement measuring device

KAIJO KK

Ultrasonic shower cleaning apparatus

JAPAN SCIENCE & TECH AGENCY

Communication system and communication method using the same

YAMAHA MOTOR CO LTD

Variable valve device for engine

TAJIMA AKIO

Secret communication system and method for generating shared secret information