Patent ID: 6335949
Filing Date: 2002-01-01
Classification: G11B,H03M,H04L

Abstract:
A non-linear signal receiver for detecting an original data ak from an input signal r(t) which is a binary data stream input through a channel or reproduced from data recorded on a storing device, the receiver comprising:an analog-to-digital converter (ADC) for sampling the input value according to sampling timing phases, and converting the sampled data into a digital signal rk; a modeling portion including 2N+1 taps Pn (n=âˆ’N, . . . , 0, . . . , N) each for selecting one of 2&tgr;+&ngr; tap values according to each pattern Pn (bkâˆ’n+&ngr;:kâˆ’n+1, bkâˆ’nâˆ’1:kâˆ’nâˆ’&tgr;) of absolute values of the data transitions future &ngr; bits and past &tgr; bits, for estimating the channel characteristics of the sampled signal from the selected tap value and the data transition value; a timing recovery portion for controlling the sampling timing phase of the analog-to-digital converter using a phase gradient which is the difference between values of respective taps positioned symmetrically around the tap P0 of the modeling portion; an equalizer for compensating for the deteriorated characteristics of the output value of the analog-to-digital converter; and a detector for converting the output of the equalizer to a digital value, to detect the original signal.