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:
Oct. 15, 1985
Filed:
Sep. 07, 1983
Herman Lia, Li, NO;
Tandberg Data A/S, Oslo, NO;
Abstract
High-frequency magnetic bias signals are superimposed on the data signals and are synchronized with the data signals. For the data signals and for the magnetic bias signals in each instance a separate write amplifier with two logic elements is provided which are alternately switched in dependence upon the binary values of the data signals and the magnetic bias signals, respectively. Mutually corresponding logic elements in the write amplifiers are interconnected at the output side via resistances. The magnetic head is connected between the connection points of the resistances. The resistances determine the respective current through the magnetic head. As logic elements preferably integrated NAND circuits without output-side collector resistances are provided.