| 摘要 |
PURPOSE:To easily and cheaply perform a spread spectrum communication by generating a clock signal from the carrier of a public broadcasting. CONSTITUTION:The carrier is extracted from the signal of the same broadcasting such as a television or a radio, etc., received simultaneously by a transmitting part and a receiving part respectively, by means of a first carrier extracting and clock signal generating means 1a and the second carrier extracting and clock signal generating means 1b respectively, and the clock signal is generated from the said carrier. Then, a generated clock basis is supplied to a first PN signal generating means 2a and the second PN signal generating means 2b. Thus, because the clock signal is generated from a broadcast wave, the spread spectrum communication can be easily and cheaply performed without necessitating a clock signal generator or the like. |
