Inventor
ARASEKI TAKASHI
16 patents
⚠️ This page may combine multiple inventors who share the name “ARASEKI TAKASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON ELECTRIC CO
12 patentsUS4670903AJun 2, 1987
Echo canceller for attenuating acoustic echo signals on a frequency divisional manner
NIPPON ELECTRIC CO34 citations92
US4354273AOct 12, 1982
ADPCM System for speech or like signals
NIPPON ELECTRIC CO42 citations92
US4317208AFeb 23, 1982
ADPCM System for speech or like signals
NIPPON ELECTRIC CO34 citations92
US4097860AJun 27, 1978
Offset compensating circuit
NIPPON ELECTRIC CO47 citations92
US4167653ASep 11, 1979
Adaptive speech signal detector
NIPPON ELECTRIC CO25 citations81
US4005277AJan 25, 1977
Echo controller comprising a mode switch for switching echo suppressor and canceller
NIPPON ELECTRIC CO23 citations81
US4001505AJan 4, 1977
Speech signal presence detector
NIPPON ELECTRIC CO24 citations81
US4288664ASep 8, 1981
Neutralization signal developing device for an echo suppressor
NIPPON ELECTRIC CO14 citations73
US4284859AAug 18, 1981
Adaptive electronic hybrid circuit
NIPPON ELECTRIC CO15 citations73
US4191858AMar 4, 1980
Block digital processing system for nonuniformly encoded digital words
NIPPON ELECTRIC CO13 citations73
US4028506AJun 7, 1977
Maximum value tracing circuit for digitized voice signals
NIPPON ELECTRIC CO17 citations73
US4012603AMar 15, 1977
Echo suppressor having self-adaptive means
NIPPON ELECTRIC CO17 citations73
NEC CORP
4 patentsUS4713776ADec 15, 1987
System for simultaneously coding and decoding a plurality of signals
NEC CORP63 citations96
US4945565AJul 31, 1990
Low bit-rate pattern encoding and decoding with a reduced number of excitation pulses
NEC CORP24 citations92
US4821324AApr 11, 1989
Low bit-rate pattern encoding and decoding capable of reducing an information transmission rate
NEC CORP51 citations92
US4716592ADec 29, 1987
Method and apparatus for encoding voice signals
NEC CORP32 citations92