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:
Mar. 10, 1992
Filed:
Aug. 22, 1990
Brian G Cleveland, Boulder, CO (US);
Bela A Geczy, Boulder, CO (US);
Storage Technology Corporation, Louisville, CO (US);
Abstract
The system of the present invention makes use of a data synthesizer to produce a synthesized analog data signal representative of a special encoded binary waveform to perform a test on both the magneto resistive element as well as the associated read path electronics independent of operator intervention. The special encoded binary waveform is coupled to the magneto resistive element to produce an approximation of the typical read back signal that is read by the magneto resistive element from a test magnetic tape. The analog signal output by the magneto resistive element is applied to the read back electronics, where it is converted in well known fashion to a digital data signal indicative of the synthesizer block of data that is applied to the magneto resistive element. The output of the read path electronics is applied to a special pattern detector, a sync pattern detector and a test pattern detector which function to detect anomalies in the digital data that is output by the read path electronics.