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. 22, 1991
Filed:
Aug. 22, 1990
Brian G Cleveland, Boulder, CO (US);
Storage Technology Corporation, Louisville, CO (US);
Abstract
The data write pulse compensator circuit functions to produce an erase frequency that is greater than twice the data frequency using a single clock source to thereby improve the signal to noise ratio in the read back signal. This apparatus uses a precision delay line to produce a series of clock signals with each successively replicated clock signal being delayed a predetermined amount of time with respect to the last previously replicated clock signal. The plurality of generated and delayed clock signals is then combined by a programmable pulse synthesizer to produce a data pulse of a predetermined frequency and width. The same apparatus is also used to produce a pair of erase pulses using a different combination of the delayed replicated clock signals to produce a pulse identical in size and shape to that produced for the data frequency. However, the erase pulses are time shifted such that their apparent frequency is greater than twice the data frequency.