Title: Magnetic recording signal equalization apparatus

Abstract: Magnetic recording apparatus including signal equalization means for recording data so as to obtain read pulses therefrom which are symmetrical about their peak and substantially narrowed at both the base and half amplitude points whereby increased packing density may be achieved without attendant peak shift, the equalization being provided by means for generating an ac bias signal in conjunction with data transitions and associated equalizer transitions referenced to the bias signal for application to magnetic recording means.

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Inventors: Geffon, Arthur P. (Sunnyvale, CA, US)
Jacoby, George V. (Los Altos, CA, US)

Application Number: 903415
Filing Date: 1978-05-08
Publication_date: 1980-05-06
Assignee: Sperry Rand Corporation (New York, NY)
Primary Class(es): 360/45 360/66
Other Classes:
US Patent Ref:

3262124	Jul, 1966	Johnson et al.	360/66.
3503059	Mar, 1970	Ambrico	360/45.
3792443	Feb, 1974	Breikss	360/51.
3967317	Jun, 1976	Newell	360/66.

Other Refs:
Primary Examiner: Canney, Vincent P.
Assistant Examiner:
Attorney: Battjer; Eugene T., Cleaver; William E., Truex; Marshall M.