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Initial Adjustment Of Disk Surface Test Equipment Disclosure Number: IPCOM000053495D
Original Publication Date: 1980-Jan-01
Included in the Prior Art Database: 2005-Feb-12

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Atkey, P Blythin, P Hawkins, BA [+details]


The surface analysis of a magnetic recording disk by recording a predetermined pattern of signals and detecting errors in playback of the signals is described in a previous article (*). That article also described how the threshold level of the error detector was initially adjusted by balancing the brightness of two light-emitting diodes.