Inventor

TAJIMA AKIO

JP103 patents

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

TAJIMA AKIO

NEC CORP

Bit synchronization circuit

Data transmission system using specific pattern for synchronization

Optical network and switch control method for use in the optical network

Secret communications system and channel control method

Multiplexing communication system and crosstalk elimination 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

Optical wavelength tunable filter

Optical network management apparatus and method of allocating optical frequency band

Optical network management apparatus and method of allocating optical frequency band

Optical network management apparatus and method of allocating optical frequency band

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

Random number generating and sharing system, encrypted communication apparatus, and random number generating and sharing method for use therein

Quantum cryptography key distributing system and synchronizing method used in the same

Communication system and synchronization method thereof

Single fibre bidirectional optical transmission system and single fibre bidirectional optical amplifier

Method and system for managing shared information

Optical signal switching device for use in an optical protection network

Transmission method, transmitter-receiver, and transmitting-receiving system

Optical network and switch control method for use in the optical network

Clock extraction circuit

Encryption key generation

Optical network management apparatus and method of allocating optical frequency band

Optical network system, optical node device, and optical network control method

Optical network system, optical node device, and optical network control method

Optical network control devices and optical path setting method

Information communication system, information communication method and device

Optical network system, optical node device, and optical network control method

SEIKOSHA KK

Dot printer

Paper feeder

Paper detector of printer

Printer for a computer

Paper feeder

Recording apparatus for printing on opposite surfaces of recording medium

Paper feeding mechanism for printer

MAEDA WAKAKO

Communication system and timing control method

Method and device for managing cryptographic keys in secret communications 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

TAJIMA AKIO

Secret communication system and method for generating shared secret information

Organosilicon compound and thermosetting resin composition containing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Microwave oven with induction steam generating apparatus

JAPAN SCIENCE & TECH AGENCY

Communication system and communication method using the same

TAIHO IND CO

Fluorescent carbazole derivative

MARUYAMA TERUO

Insulator for audio and method for evaluating same