Patent ID: 8010859
Filing Date: 2011-08-30
Classification: H04L

Abstract:
1. A data transmitting and receiving system comprising: a transmission unit transmitting an output data signal derived from output data and associated error detection code, the transmission unit comprising a pre-emphasis driver configured to pre-emphasize the output data signal before transmission; a channel having determined transmission characteristics and configured to communicate the output data signal from the transmission unit to a receiving unit; wherein the receiving unit comprises: a first receiving driver configured to perform impedance-matching with the channel and further configured to amplify the received output data signal; an equalizer responsive to an equalization coefficient and configured to equalize the received and amplified output data signal; an error detector configured to analyze input data and associated error detection code derived from the received output data signal and determine whether a bit error is present in the input data and generate an error signal upon determining the presence of a bit error; a receiving controller configured to receive the input data and execute an operation associated with the input data in the absence of the error signal received from the error detector; a re-transmission requester configured to output error indication data and an equalization correction signal in response to the error signal; an equalization controller configured to change the equalization coefficient in response to the equalization correction signal; and a first transmission driver outputting an error indication signal derived from the error indication data received from the re-transmission requester, wherein upon determining successive bit errors in the input data, the receiving unit causes the equalization coefficient to be changed.