Prafulla A Reddy

US Patent:

8448045, May 21, 2013

Filed:

May 26, 2011

Appl. No.:

13/116882

Inventors:

Prafulla Bollampalli Reddy - Longmont CO, US
Peter Igorevich Vasiliev - Longmont CO, US
Hui Su - Longmont CO, US
Timothy Richard Feldman - Louisville CO, US
Mary Elizabeth Dunn - Denver CO, US
James Joseph Touchton - Boulder CO, US
Bernardo Rub - Sudbury MA, US

Assignee:

Seagate Technology LLC - Cupertino CA

International Classification:

G11C 29/00

US Classification:

714764, 714805

Abstract:

Values are grouped into a first set of groupings of values. Based on inner codes, the number of groupings in the first set of groupings that have at least one erroneous value is determined. If the number of groupings in the first set of groupings that have an erroneous value is fewer than a maximum number of groupings that can be corrected by outer codes, a seek operation is begun. During the seek operation, the outer codes are used to detect and correct the erroneous values that were produced during the reading of values. In other aspects, a parity section for a data section of a data storage device is dirtied before writing any data to the data section such that if writing to the data section is interrupted, the parity section will indicate that it should not be used to correct data read from the data section.

US Patent:

20100161917, Jun 24, 2010

Filed:

Dec 23, 2008

Appl. No.:

12/342886

Inventors:

Prafulla Bollampalli Reddy - Longmont CO, US

Assignee:

SEAGATE TECHNOLOGY, LLC - Scotts Valley CA

International Classification:

G06F 12/00

US Classification:

711156, 711E12001

Abstract:

A method includes generating a track description in real-time describing at least a portion of a track of a storage medium. An apparatus includes a dynamic track description generator configured to dynamically generate a track description describing a data wedge of a track on a storage medium, wherein the track description is generated at a time prior to synchronization with the data wedge.

US Patent:

20130007556, Jan 3, 2013

Filed:

Jun 29, 2011

Appl. No.:

13/172457

Inventors:

Ara Patapoutian - Hopkinton MA, US
Hieu V. Nguyen - Superior CO, US
Prafulla Bollampalli Reddy - Longmont CO, US

Assignee:

SEAGATE TECHNOLOGY LLC - Scotts Valley CA

International Classification:

H03M 13/05
H03M 13/29
G06F 11/10
G06F 12/00

US Classification:

714755, 711154, 714752, 711E12001, 714E11032

Abstract:

Presented is a data channel with selectable components, such as encoders or decoders. Also, data having different data signal characteristics can be processed through a data channel based on the data signal characteristics. Further, a data channel may have independent encoding path and an independent decoding path. For example, a first data transmission having first data signal characteristics may be processed via a data channel based on a first selected set of components of the data channel and a second data transmission having second data signal characteristics different than the first data signal characteristics may be processed via the data channel using a second selected set of components in the data channel. The first selected set of components may be different than the second selected set of components, but may share one or more common components.

US Patent:

20130222939, Aug 29, 2013

Filed:

Feb 29, 2012

Appl. No.:

13/408849

Inventors:

Prafulla Bollampalli Reddy - Longmont CO, US
Hui Su - Longmont CO, US
Michelle Elaine Blankenship - Lyons CO, US
Eddie Wai Pun - South San Francisco CA, US
John Marc Wright - Broomfield CO, US
Ara Patapoutian - Hopkinton MA, US
Hieu V. Nguyen - Superior CO, US

Assignee:

SEAGATE TECHNOLOGY LLC - Cupertino CA

International Classification:

G11B 5/09

US Classification:

360 48, G9B 5033

Abstract:

An implementation of a system disclosed herein provides a method of deferring decoding of a data sector received at a read channel of a storage device, in response to determining that a data sector cannot be decoded by a first decoder and storing the data sector for further processing by a second decoder.