DATA TRANSMISSION METHOD AND DATA TRANSMISSION DEVICE

摘要

The data transmission method consists in data signal being transmitted by means of CATV system. Data signal is located in the band above the cable TV bandwidth in the form of a modulated signal. Next, the data signal is combined with cable TV signal and sent via CATV line to the recipient. Data transmission device contains a unit (2) that converts data signal for each subscriber (3). The source of input data is the Ethernet switch output (1). The converting unit (2) output is connected to the module (4) that combines data signal with the signal from CATV signal splitter (5). Compound signal is fed to coaxial cable (6) that leads to the subscriber (3). The Ethernet data switch (1) serves n number of independent data channels, of which two extreme channels (7,8) have been presented in the picture.