Patent ID: 7012885
Filing Date: 2006-03-14
Classification: H04L

Abstract:
1. A data communications apparatus, connected to a data processing device through a first port and connected to a counterpart apparatus through a second port and cable network, for receiving first data from the data processing device and modulate the first data to transmit first modulated signal to the counterpart apparatus and receiving second modulated signal from the counterpart apparatus and demodulate the second modulated signal to recover second data and provide to the data processing device, said data communications apparatus comprising: a main processing unit for receiving the first data from the data processing device to perform orthogonal frequency division multiplexing (OFDM) on the first data to generate first OFDM signal, and demultiplexing second OFDM signal from the counterpart apparatus to recover the second data and provide to the data processing device; a RF unit for transforming the first OFDM signal into a radio frequency band to generate the first modulated signal and transmit to the counterpart apparatus through said second port and the cable network, and receiving the second modulated signal from the counterpart apparatus to recover a second OFDM signal and provide to said main processing unit; and means for performing medium access control to detect collision in the cable network and selectively activate said main processing unit so that said RF unit transmits and receives signal to and from the counterpart apparatus through a common cable line.