Inventor

FUJIWARA RYUHEI

JP28 patents

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

FUJIWARA RYUHEI

NEC CORP

Radio communication system with power saving disablement prior to call handling processes

Portable radio telephone set for generating pattern signals representative of alphanumeric letters indicative of a telephone number

Apparatus, system, method, and program for visible light communication

Mobile telephone using subscriber card

Apparatus for controlling a power supply of an electric machine in a vehicle

ISDN network termination unit enabling to establish data link between one terminal equipment and other terminal equipments connected to the unit without use of subscriber line

ISDN system having subscriber line multiplexer with means for establishing different data links through D-channels on subscriber line and high rate transmission line

Radio packet communication system capable of avoiding transmission collision

Power conserving mobile telephone usable as a portable phone and as an installed phone

Service identification tag and communications system using the same

Communication system capable of reducing communication load

Echo suppressor capable of suppressing an echo resulting from acoustic coupling without spoiling a natural sound of conversation

Phase-locked loop synthesizer for use in tdm communications system

Two-battery supply for operating and waiting modes of a carphone

Multiple access communication system having loop-check circuitry for switching intraoffice connections

Visible light control apparatus, visible light control circuit, visible light communication apparatus, and visible light control method

Speech recognition method with noise reduction and a system therefor

Radio information terminal capable of facilitating on-line operation by a portable computer

Voice mail system

Radio broadcast system with improved reception of an NAK code

Method and device employing location confirmation by a server or a bridge for controlling mobile host position in local area network

Radio conference system and terminal unit therefor

Speech decoding apparatus comprising alarm signal generator operable on deterioration of transmission path quality

Management system capable of quickly assigning a terminal endpoint identifier to a terminal equipment unit

Automatic call making system and a mobile radio terminal

Data distribution method, system, and apparatus and recording medium recording method

NIPPON ELECTRIC CO

System for adjusting a time axis by using a control and an adjustment time slot in a satellite station of a TDMA network

Circuit arrangement for protecting a control channel from jamming waves in a radio communication system