Matsushita Electric Industrial Co., Ltd.

Satoshi Shinozaki

Yuji Igata

Masahiro Maki

Michinori Kishimoto

Satoshi Hasako

Shoichi Koga

Kazuhiko Tamesue

To use high noise transmission lines, such as an electric wire, as the lines to transmit signals, it is imperative to reduce the level of signals. The present invention is provided with a sending signal generating means , which outputs converted data after converting an input signal into a plurality of carrier signals assuming values at such intervals on the axis of frequency that the frequencies may not interfere with each other. If an interfering noise with any one of the plurality of frequencies arises on the transmission line, removal of only a carrier of the noise frequency would leave the communication in a good condition. Furthermore, better results can be hoped for if the respective carrier signals are so arranged as not to interfere with each other or so arranged to intersect orthogonally with each other not only on the axis of frequency but also on the axis of time

Communication systems, sender and receiver

Power-line carrier communications system

Growing community of inventors

Kukuoka-ken, Japan

Satoshi Shinozaki