Patent ID: 8855111

Claim:
A communication device, comprising: a transmitter, for transmitting to a pair of conductors of a transmission line a first data generated by a first scrambler with a plurality of first registers characterized by a first combination number; a receiver, for receiving from the pair of conductors of the transmission line a second data generated by a second scrambler, comprising a descrambler for descrambling the second data with a plurality of second registers characterized by a second combination number; and a controller, coupled to the transmitter and the receiver, for adjusting the values of the first registers according to the first combination number, the second combination number, and/or a first combination number difference between the first combination number and the second combination number; wherein the first scrambler and the second scrambler have the same scrambler generator polynomial, the controller configures the values of the first registers to be characterized by a third combination number when the first combination number difference locates in a predetermined range and/or equals to a predetermined value, there is a second combination number difference between the third combination number and the second combination number, and the difference between the second combination number difference and the predetermined range and/or the predetermined value is less than the difference between the first combination number difference and the predetermined range and/or the predetermined value.