Patent ID: 6175319
Filing Date: 2001-01-16
Classification: G11B,H03M

Abstract:
A method for generating an encoded signal from a data stream, where the encoded signal has a null state and an active state with opposing polarities, and wherein the data stream has logical one bits and logical zero bits, each logical one bit and logical zero bit having a bit starting time, the method comprising:establishing a starting polarity of the opposing polarities;setting the encoded signal to the active state at approximately a bit set-up period prior to the bit starting time of each logical one bit in the data stream;inverting the polarity of the encoded signal at approximately the bit starting time of each logical one bit in the data stream; andsetting the encoded signal to the null state at approximately a bit hold period after the bit starting time of each logical one bit where no subsequent setting of the encoded signal to the active state occurs during the bit hold period.