Sony Corporation

Panasonic Corporation

Mitsubishi Electric Corporation

Junichi Ohshima

Hisao Koga

Takehiro Sugita

Koji Ikeda

Akio Kurobe

Yuji Igata

Go Kuroda

Shigeru Takasu

Hirotoshi Yamada

Hiromu Okamoto

Yoshinori Mizugai

Atsushi Oda

A communications device, which performs data communication, includes an AC cycle sensorwhich is connected to a power linesupplied with an a.c. voltage and generates a synchronous signal SS at timing of an a.c. voltage waveform AC of the power line; a data communicatorfor performing data communication; and a communications controllerwhich performs communication of a control signal including information showing at least one of a communications device and a communications standard and controls the data communicator. When the a.c. voltage supplied to the power lineis an N-phase and when the cycle of the a.c. voltage waveform is T, data communication to be performed in a communication period subsequent to the period is controlled on the basis of the control signal included in the period of T/2M on condition that M is a natural multiple of N.

Communications device and communications method

Signal converter for television monitor

Growing community of inventors

Tokyo, Japan

Junichi Ohshima