Patent ID: 6167061
Filing Date: 2000-12-26
Classification: H04H,H04J,H04L,H04Q

Abstract:
A transmitter comprising:a data transfer line for transferring digital data;a plurality of interfaces connected to a plurality of external devices in one-by-one correspondence, and constructed so as to fit to transmission speeds peculiar to said plurality of external devices respectively;a plurality of frequency modulators connected to said plurality of interfaces in one-by-one correspondence, for executing a frequency modulation to synchronize said digital data which have natural transmission speeds on respective interfaces with a predetermined system clock on said data transfer line, and then sending out said digital data which are subjected to said frequency modulation to said data transfer line respectively;a multiplexer for multiplexing said digital data which are transmitted from said plurality of frequency modulators via said data transfer line in synchronism with said predetermined system clock, and then transmitting multiplexed digital data to an external network; anda clock generator for generating reference clocks including said predetermined system clock, and then supplying said reference clocks to said plurality of frequency modulators and said multiplexer respectively.