Patent ID: 7245450
Filing Date: 2007-07-17
Classification: G11B

Abstract:
1. A method for longitudinal position (LPOS) detection in a magnetic tape storage system, comprising: operating a magnetic tape storage system whereby a magnetic tape is passed longitudinally across a servo reader at a velocity, the tape including recorded servo burst patterns embedded with LPOS information; establishing a predetermined fixed sampling rate defined in terms of samples per unit of tape length passing across the servo reader; generating a servo channel output signal from the servo reader; generating a clock at a nominal frequency; sampling the servo channel output signal with an analog-to-digital converter (ADC) at the nominal clock frequency; interpolating the servo channel output signal samples from the ADC; generating a sequence of interpolated signal samples at the fixed sampling rate independent of the velocity of the tape; and generating an LPOS signal from the sequence of interpolated signal samples.