Method and apparatus for encoding magnetic disk sector addresses.

摘要

A method for locating data sectors on a magnetic disk during sector seeking operations comprising the steps of: encoding the addresses of the sectors to produce sector address code words; encoding said sector address code words to produce sector header code words; recording said sector header code words in the sectors during the formatting of the disk; reading said sector header code word from the sector rotating under the head and decoding said sector header code word to form said sector address code word; encoding the specified address of the sector to be located in the same manner of step A to produce a specified address code words; comparing said sector address code word read from a disk sector with said specified address code word; if the comparison results in a number of symbols which differ between said address code word and said specified address code word which is less than a predetermined number, identifying the sector as the correct sector; or if the comparison results in a number of symbols which differ which is greater than said predetermined number, not identifying the sector as the correct sector.