Patent ID: 7277842
Filing Date: 2007-10-02
Classification: G11B

Abstract:
1. A method for evaluating parameters of a drum design of a drum for use in a helical scan tape device comprising the steps of: (a) receiving said parameters wherein said parameters include a position of a first read head on said drum, said first read head sensing data recorded along a first azimuth; (b) selecting a track of predetermined dimensions from a plurality of tracks; (c) simulating a reading of said selected track by calculating a first read head coverage comprising a first geometric area of the selected track that would be covered by said first read head as said first read head scans over said selected track; (d) determining that the simulated read is successful when a ratio of said first read head coverage to a total geometric track area of the selected track as defined by the predetermined dimensions of the selected track is greater than a predetermined coverage threshold value; (e) repeating steps (b) through (d) for each of said plurality of tracks; and (f) determining that said parameters are effective for said drum design when a number of said plurality of tracks for which the simulated read was determined to be successful is greater than a predetermined error rate threshold value.