Patent ID: 8958276
Filing Date: 2015-02-17
Classification: G11B

Abstract:
1. A method of correcting a channel bit pattern that violates a bi-phase modulation constraint in a bi-phase modulated portion of a high frequency modulation (HFM) signal, the method comprising: recovering a sequence of channel bits from the HFM signal; analyzing the recovered sequence of channel bits to generate a bi-phase modulation compliant sequence of channel bits based on the recovered sequence of channel bits, wherein the bi-phase modulation compliant sequence of channel bits does not violate the bi-phase modulation constraint in the bi-phase modulated portion of the HFM signal, wherein analyzing the recovered sequence includes recovering bi-phase modulated HFM bits from the bi-phase modulation compliant sequence of channel bits to generate a detection output corresponding to the recovered bi-phase modulated HFM bits.