초록 ▼

A data generator assembly for use in retrieving stored data from an information storage medium. The data generator assembly includes a positive peak detector for receiving a preprocessed signal having a predetermined waveform including positive peaks, negative peaks, and a DC component. The positive

A data generator assembly for use in retrieving stored data from an information storage medium. The data generator assembly includes a positive peak detector for receiving a preprocessed signal having a predetermined waveform including positive peaks, negative peaks, and a DC component. The positive peak detector is utilized to measure and track the positive peaks to output a positive peak signal. A negative peak detector measures and tracks the negative peaks to output a negative peak signal. The data generator assembly also includes a voltage divider for averaging the negative peak signal and the positive peak signal and generating a threshold signal representing the approximate peak-to-peak midpoint of the preprocessed signal which varies with the DC component. A comparator is provided for comparing the preprocessed signal with the threshold signal. The comparator generates an output data waveform signal indicative of the stored data on information storage medium.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for retrieving stored data from an information storage medium, said apparatus comprising:an input stage for generating a signal having a predetermined waveform including positive and negative peaks corresponding to said stored data;an integrator stage for int

[ What is claimed is:] [1.] An apparatus for retrieving stored data from an information storage medium, said apparatus comprising:an input stage for generating a signal having a predetermined waveform including positive and negative peaks corresponding to said stored data;an integrator stage for integrating at least a portion of said signal to output a preprocessed signal having a predetermined waveform including said positive peaks, negative peaks, and a DC component;a data generator for generating a threshold signal which varies with said DC component of said preprocessed signal, and for generating an output data waveform signal indicative of said stored data by comparing said preprocessed signal and said threshold signal, said data generator including:a positive peak detector for receiving said preprocessed signal to measure and track said positive peaks and to output a positive peak signal;a negative peak detector for receiving said preprocessed signal to measure and track said negative peaks and to output a negative peak signal;a voltage divider for averaging said negative peak signal and said positive peak signal to thereby generate a voltage divider output; anda comparator for receiving said voltage divider output and comparing said preprocessed signal with a divided voltage corresponding to said threshold signal to thereby generate said output data waveform signal.