Multiplexing transmission system, receiver apparatus and module, transmitter apparatus for multiplexing transmission

摘要

Digital signals having respective pieces of frequency information different from each other are bundled, and transmitted at high speed. On receiving side, digital signals retaining the respective pieces of frequency information are recovered and separated. Transmitter apparatus divides pieces of transmission data that have the different pieces of frequency information and correspond to respective input channels into data blocks having a fixed length, as valid data, and subsequently multiplexes the data blocks corresponding to the respective input channels and outputs the multiplexed data to a transmission path. A receiver apparatus divides data string received into data flows and subsequently restores the transmission data, from the data blocks consecutive in each data flow and stores the restored data, and outputs transmission data corresponding to the respective data flows in synchronization with clocks generated for these data flows.

主权项

1. A data multiplexer system comprising: a transmitter apparatus configured to transmit transmission data to a transmission path; and a receiver apparatus configured to receive the transmission data from the transmission path,
wherein the transmitter apparatus comprises:
a plurality of input channels, each of which is configured to receive transmission data having frequency information different from frequency information of the other input channels;a plurality of block framers configured to divide transmission data corresponding to the respective input channels into data blocks having a fixed length, as valid data; anda multiplexer configured to multiplex the data blocks corresponding to the respective input channels and output multiplexed data to the transmission path, and the receiver apparatus comprises:
a de-multiplexer configured to divide a data string received via the transmission path into as many data flows as the input channels on a side of the transmitter apparatus;a plurality of FIFOs configured to execute a process of restoring valid data from the corresponding data flows and storing the data in respective FIFO memories, and a process of reading the transmission data from the respective FIFO memories and outputting the data to the corresponding output channels; anda plurality of frequency controllers configured to execute a process of estimating transmission data rates from time average data rates of the respective corresponding data flow, and a process of adjusting the frequencies of clocks supplied to the corresponding FIFOs so as to be equal to the respective estimated transmission data rates.