Patent ID: 6307900
Filing Date: 2001-10-23
Classification: G09G,G11B

Abstract:
A digital data detection system, including a simplified gate structural interpolation apparatus, for generating decoded data by detecting data stored on a magnetic storage medium by interpolating sampled data using a phase error signal and an interpolation coefficient, wherein the sampled data is sampled based on a sampling clock, comprising:means of a magnetic medium, for storing the data;means for detecting the stored data in the form of analog signals from the storing means;means for amplifying the detected analog signals;means for sampling the amplified analog signals in accordance with the sampling clock fed thereto from a MCU (main control unit) and generating sampled digital data;means for interpolating the sampled digital data, in order to generate interpolated data, using the phase error signal and the interpolation coefficient;means for equalizing the interpolated data;means for generating decoded data by using a Viterbi algorithm employing maximum likelihood sequence detection; andmeans for detecting the phase error signal and transmitting the detected phase error signal to the interpolating means.