Patent ID: 8817400
Filing Date: 2014-08-26
Classification: G11B

Abstract:
1. A data storage device comprising: a storage medium on which data is stored in overlapping tracks; a medium controller that directs storage of data on, and reading of data from, said storage medium, including encoding of data being stored and decoding of data being read, said decoding including, when reading a first track, cancelling interference from a second track that overlaps said first track; and a host controller in communication with said medium controller, said host controller including memory that stores data decoded by said medium controller and data to be written by said medium controller; wherein: communication between said medium controller and said host controller includes signals derived from said data on said first and second tracks for facilitating said cancelling, said signals derived from said data including at least one of: timing information for determining relative alignment of said first and second tracks along their respective track lengths, whereby said interference from said second track is temporally aligned with said data being read from said first track to facilitate said cancelling, or a signal indicating whether said data have been decoded successfully, allowing said decoded data to be converted to a coding format used on said medium to facilitate said cancellation.