The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1992
Filed:
Apr. 11, 1990
Erik Hardeng, Oslo, NO;
Tandberg Data AS, , NO;
Abstract
A method and an apparatus for recording data information on a magnetic recording medium with the assistance of a magnetic write head and a controllable record amplifier preceding the magnetic write head and to which the data information in the form of binary data signals, as well as bias signals superimposed thereon are supplied, are disclosed. The recorded signals are, in turn, read with a playback device immediately after the recording. In a measuring device, the peak shift of the read output signals is measured and averaged. The amplitudes for the binary data signals and/or of the bias signals are corrected with a control signal generated by a control unit dependent on the average peak shift, being corrected in order to achieve an optimum relationship of read output signal amplitude to minimum peak shift.