Patent ID: 7184475

Claim:
A method of adjusting equalization parameters in a receiver, including the steps of: receiving at the receiver a data stream which has data blocks with an information section and an error correction section, correcting bits in the data block using error correction means, measuring a bit error rate (BER) from the number of corrected bits in the data block, changing a predetermined equalization parameter, measuring the bit error rate (BER) after change of the predetermined parameter, changing the predetermined equalization parameter with an amount and in a direction so as to lower the bit error rate (BER), continuing with measuring the bit error rate (BER) and changing the predetermined equalizing parameter until an optimum is reached; and wherein the previous bit (0 or 1) preceding a sampled bit is taken into consideration, in that the receiver threshold (th) is decreased when the previous bit is 0, and is increased when the previous bit is 1, the amount and direction of adjustment being derived from a look-up table or a circuit forming a look-up table.