Patent ID: 6028728
Filing Date: 2000-02-22
Classification: G11B

Abstract:
A sampled amplitude read/write channel for writing user data received from a host computer system to a disk storage medium and later reading the user data from the disk storage medium for transfer back to the host computer system, the read/write channel comprising:(a) a channel encoder for encoding the user data according to a code constraint to generate encoded data with a code rate less than unity;(b) write circuitry for writing the encoded data to the disk storage medium at a predetermined baud rate during a write operation, wherein the write circuitry is clocked at a frequency less than the baud rate;(c) a sampling device for sampling an analog read signal emanating from a read head positioned over the disk storage medium during a read operation to generate a sequence of discrete-time sample values; and(d) a discrete time detector for detecting an estimated data sequence from the discrete-time sample values.