1
yuan xing Lee
George Mathew, Yuan Xing Lee, Hongwei Song, Jeffrey P Grundvig, Viswanath Annampedu: Systems and methods for fly-height control using servo address mark data. LSI Corporation, Hamilton DeSanctis & Cha, November 8, 2011: US08054573 (18 worldwide citation)

Various embodiments of the present invention provide systems and methods for determining fly-height adjustments. For example, various embodiments of the present invention provide storage devices that include a storage medium, a read/write head assembly disposed in relation to the storage medium (278 ...


2
yuan xing Lee
George Mathew, Yuan Xing Lee, Hongwei Song, Jeffrey P Grundvig, Viswanath Annampedu: Systems and Methods for Fly-Height Control Using Servo Data. Hamilton DeSanctis & Cha, February 24, 2011: US20110043938-A1

Various embodiments of the present invention provide systems and methods for determining changes in fly-height. For example, various embodiments of the present invention provide storage devices that include a storage medium having servo data thereon. A read/write head assembly is disposed in relatio ...


3
yuan xing Lee
George Mathew, Yuan Xing Lee, Hongwei Song, Jeffrey P Grundvig, Viswanath Annampedu: Systems and Methods for Fly-Height Control Using Servo Address Mark Data. Hamilton DeSanctis & Cha, July 15, 2010: US20100177430-A1

Various embodiments of the present invention provide systems and methods for determining fly-height adjustments. For example, various embodiments of the present invention provide storage devices that include a storage medium, a read/write head assembly disposed in relation to the storage medium (278 ...


4
Viswanath Annampedu: Systems and methods for diversity combined data detection. LSI Corporation, Hamilton DeSanctis & Cha, September 4, 2012: US08261171 (72 worldwide citation)

Various embodiments of the present invention provide systems and methods for data processing. For example, some embodiments of the present invention provide data processing circuits including a pattern detection circuit having at least two data detector circuits each operable to receive the same ser ...


5
Viswanath Annampedu, Pervez M Aziz: Asynchronous servo RRO detection employing interpolation. Agere Systems, August 15, 2006: US07092462 (62 worldwide citation)

A repeatable read-out (RRO) detector employs one or more digital interpolators to interpolate asynchronous sample values that represent RRO data. The asynchronous sample values are read from a recording medium and generated by an A/D converter at a symbol rate, and the interpolators generate interpo ...


6
Viswanath Annampedu, Pervez M Aziz: Detection of recorded data employing interpolation with gain compensation. Agere Systems, February 21, 2006: US07002767 (61 worldwide citation)

A repeatable run-out (RRO) detector employs one or more digital interpolators to interpolate asynchronous sample values representing an RRO address mark (AM) and RRO data, and an asynchronous maximum-likelihood (AML) detector to detect the RRO AM. The AML detector selects one of either the asynchron ...


7
Viswanath Annampedu, Pervez Mirza Aziz: Servo data detection in the presence or absence of radial incoherence using digital interpolators. Agere Systems, July 25, 2006: US07082005 (61 worldwide citation)

Techniques for detecting data, such as servo data, from input or incoming data read from a transmission medium, such as magnetic recording medium, in the presence or absence of radial incoherence. In one illustrative recording medium-based aspect of the invention, such a technique for detecting data ...


8
Viswanath Annampedu, Pervez M Aziz: Maximum likelihood detection of asynchronous servo data employing interpolation. Agere Systems, June 28, 2005: US06912099 (59 worldwide citation)

A repeatable run-out (RRO) detector employs one or more digital interpolators to interpolate asynchronous sample values representing an RRO address mark (AM) and RRO data, an asynchronous maximum-likelihood (AML) detector to detect the RRO AM, and a RRO data decoder to decode the RRO data. The AML d ...


9
Viswanath Annampedu, Pervez M Aziz: Synchronizing an asynchronously detected servo signal to synchronous servo demodulation. Agere Systems, January 23, 2007: US07167328 (56 worldwide citation)

A first set of data is detected in a signal having synchronous samples and interpolated samples, wherein the first set of data is detected asynchronously as corresponding to one of the samples. A time to transmit a data-found signal is determined based on an offset between the data-detected sample a ...


10
Roy S Neville, Viswanath Annampedu, Keith R Bloss, Vishal Narielwala: Systems and methods for accessing data from a variable polarity head assembly. Agere Systems, Hamilton DeSanctis & Cha, September 9, 2008: US07423827 (53 worldwide citation)

Various systems and methods for accessing data via a variable polarity head assembly are disclosed herein. As one example, a method for accessing data is disclosed that includes receiving a data set, and sampling the data set using positive synchronization to create one data set and negative synchro ...



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