Patent ID: 8054576
Filing Date: 2011-11-08
Classification: G11B

Abstract:
1. A servo detection method for operating a servo detection system for detecting longitudinal servo tracks of a longitudinal tape, said servo detection system comprising at least two servo read heads spaced laterally with respect to a longitudinal tape on a first head module of a read/write head, and at least one servo read head on a second head module of said read/write head spaced longitudinally with respect to said first head module, the method comprising: initially sensing a servo track of said longitudinal tape, employing one said servo read head of said first head module and said servo read head of said second head module to detect lateral position difference between said servo read heads with respect to said servo track, and calibrating skew misalignment of said servo track with respect to said read/write head; storing a value representing said calibrated skew misalignment as a stored calibrated zero reference value; and switching from said one servo read head of said first head module and said servo read head of said second head module, to said two servo read heads of said first head module.