Inventor
OHIRA SAKARI
JP12 patents
⚠️ This page may combine multiple inventors who share the name “OHIRA SAKARI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI ELECTRONICS
8 patentsUS5633862AMay 27, 1997
DTMF signal transmission method in single frequency simultaneous transmitting and receiving system and single frequency simultaneous transmitting and receiving system transceiver capable of transmitting DTMF signal
HITACHI ELECTRONICS21 citations92
US5493698AFeb 20, 1996
Radio apparatus for simulataneously transmitting and receiving signals using a simple frequency
HITACHI ELECTRONICS38 citations91
US5553079ASep 3, 1996
Radio communication apparatus and method for multiplex transmission of voice and data signals
HITACHI ELECTRONICS22 citations87
US5956650ASep 21, 1999
Communication system interconnecting telephone line and single-frequency simultaneous transmission/reception radio system
HITACHI ELECTRONICS11 citations73
US5734969AMar 31, 1998
Radio communication method and apparatus which adds an interrupt enable synchronizing signal to a compressed voice signal in place of a synchronizing A signal
HITACHI ELECTRONICS12 citations73
US5524274AJun 4, 1996
Transceiver controlled by absence/presence of input signal
HITACHI ELECTRONICS11 citations73
US5355363AOct 11, 1994
Voice transmission method and apparatus in duplex radio system
HITACHI ELECTRONICS9 citations71
US5697049ADec 9, 1997
Radio relay method, radio relay system using the method and radio unit
HITACHI ELECTRONICS3 citations61