Patent ID: 7606300

Claim:
An adaptive equalizer constituting a read path for a storage medium, the adaptive equalizer comprising: a finite impulse response (FIR) filter for receiving a first signal stream and outputting the first signal stream in the form of a second signal stream; a Viterbi decoder for correcting a bit error of the second signal stream; a level error detector for detecting a level error between the second signal stream and a third signal stream that is an ideal output signal corresponding to the second signal stream; a tap coefficient updater for selecting a tap coefficient minimizing the level error and providing the selected tap coefficient as a tap coefficient of the FIR filter; and a partial response (PR) generator for generating the third signal stream from a training pattern, wherein the tap coefficient minimizing the level error is determined as an initial value in a system initialization mode, and the determined initial value is used as an initial value of the tap coefficient of the FIR filter in a normal operation mode.