Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Masanori Baba

Tsuyoshi Yamaguchi

Yoshimi Tokunaga

Mutsuhiko Ooishi

A communication device that establishes a communication with another communication device and supplies electric power to the other communication device by way of a transmission channel, the device comprises a supply voltage generation section that generates a supply voltage, a first detection section that detects a connection of an electric device other than the other communication device to the transmission channel, and an output control section that controls a supply of electric power to the other communication device, wherein the output control section supplies no power to the other communication device when the first detection section detects the connection of the electric device.

Communication device, power supplying method therefor, and power supply system

The disclosed impulse noise rejection circuit and satellite communications terminal using the same are small in circuitry and small in the number of components. The limiter amplifier disposed before a narrow band pass filter controls a desired reception signal and an impulse noise to the same amplitude. The suppression of the amplitude of the impulse noise eliminates the effect of extension of fall time of the impulse noise, which is caused by a time constant of the narrow band pass filter, on the desired reception signal. Thus it realizes the impulse noise rejection circuit small in circuitry and small in the number of parts, and the satellite communications terminal using the same.

Growing community of inventors

Fukuoka, Japan

Masanori Baba