Patent ID: 6151375
Filing Date: 2000-11-21
Classification: H04N

Abstract:
A transmitter for transmitting digital data sent out from a sender terminal apparatus among plural terminal apparatuses to a destination terminal apparatus via a data transmission line, the plural terminal apparatuses being connected to a communication system in which an asynchronous mode is employed as a media access control system, the transmitter comprising:synchronous modulating means for converting a synchronizing signal of digital data into block synchronizing signals including a start signal indicating a head position of bit stream data and an end signal indicating an end position thereof, the digital data being sent out from the sender terminal apparatus and separated into the synchronizing signal and the bit stream data;multiplexing means for multiplexing the bit stream data and the block synchronizing signals converted by the synchronous modulating means in terms of a modulation process not to be overlapped on a time base respectively to generate block data; andtransmitting means for transmitting the block data generated by the multiplexing means to one or more than two destination terminal apparatuses via the data transmission line.