Patent ID: 6768603
Filing Date: 2004-07-27
Classification: G11B,H03M

Abstract:
A method for write-precompensating a waveform for magnetically recording a waveform on a magnetic medium, the method comprising:encoding a user data stream into an encoded data stream, the encoded data stream having no tribits and having consecutive combinations of dibits separated by a minimum of two 0 symbols; applying no delay to a first transition of a dibit of the encoded data stream; delaying an isolated transition of the encoded data stream by a first predetermined amount of time; delaying a second transition of a dibit of the encoded data stream by a second predetermined amount of time, the second predetermined amount of time being substantially twice the first predetermined amount of time, the first and second predetermined amounts of time being selected so that the closest interdibit transition of the encoded data stream becomes about equal to a distance between two neighboring intradibit transitions of the encoded data stream.