Agere (LSI) Assigned Patent
Reducing low frequency loss in magnetic storage device
By Jean Jacques Maleval | July 11, 2013 at 2:53 pmAgere Systems LLC, Allentown, PA, has been assigned a patent (8,441,753) developed by Yang Cao, Longmont, CO, for "systems and methods for reducing low frequency loss in a magnetic storage device."
The abstract of the patent published by the U.S. Patent and Trademark Office states: "Various embodiments of the present invention provide systems and methods for reducing low frequaency loss in a magnetic storage device. For example, a data processing circuit is disclosed that includes an amplifier, two filters and a summation element. The amplifier provides an amplified output that is filtered using a first of the two filters to create a first filtered output. The first filtered output is then filtered using the second of the two filters to create a second filtered output. The summation element sums the first filtered output with the second filtered output to provide a pole altered output."
The patent application was filed on Sept. 19, 2008 (12/992,943).











