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Circuit for Adjustable Delta-V Parameter

IP.com Disclosure Number: IPCOM000039694D
Original Publication Date: 1987-Jul-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue

IBM

Related People

Authors:
Kerwin, GJ Schmerbeck, TJ [+details]

Abstract

The Adjustable Data Detection Parameter defined herein is used in the digitization of the analog read signal of a magnet storage device. This parameter, which acts as a screen or filter of spurious non-data pulses, is called the Delta-V requirement or detection parameter. Its optimal value changes as the transfer function of the recording channel changes. Its adjustability, then, results in the ability to increase the read performance of the channel. The figure shows a detailed block diagram of the circuit that implements the Adjustable Delta-V Parameter. Notice that the Delta-V Detector circuit is depicted as a black box that senses the voltage VDEL across the resistor RDEL. A 2-volt, 2.5% reference voltage is used to set up the Delta-V voltage.