Townsend and Townsend and Crew LLP
Optimizing detector target polynomials in read/write channels to achieve best error rate performance in disk drives
Embodiments of the invention provide techniques for optimizing the detector target polynomials in read/write channels to achieve the best error rate performance in recording devices. In one embodiment, a method of obtaining a detector target polynomial of a read/write channel to achieve best error rate performance in a recording device comprises: providing an initial detector target for the read/write channel; measuring a noise autocorrelation of the read/write channel at the output of equalizer using channel hardware; computing a noise autocorrelation at the output of the 1st stage target based on the measured noise autocorrelation of the read/write channel at the output of equalizer; calculating optimal coefficients for the noise whitening filter; and obtaining the optimal detector target polynomial of the read/write channel using the calculated coefficients for noise whitening filter.
Hitachi Global Storage Technologies Netherlands B.V.
G G G
G11B G11B G11B
inventional inventional inventional
Weldon Yuan Xing Travis Richard Leo
Hanson Lee Oenning Galbraith