What are you looking for ?
Infinidat
Articles_top

Seagate Assigned Nine Patents

Magnetic shield, carbon overcoat, encryption, heating element temperature oscillation, cell spin-torque magnetic RAM, vibration, heat source management, tribological monitoring, non-volatile write cache

Magnetic shield structure for data transduction
from recordable media in storage device
Seagate Technology LLC, Scotts Valley, CA, has been assigned a patent (8,564,910) developed by seven co-inventors for an apparatus and associated method of using a “magnetic shield structure for data transduction from a recordable media in a storage device.”

The co-inventors are Mourad Benakli, Bloomington, MN, Kirill Rivkin, Edina, MN, Kaizhong Gao, Eden Prairie, MN, James Wessel, Savage, MN, Ming Sun, Eden Prairie, MN, Ibro Tabakovic, Edina, MN, and Mark Thomas Kief, Lakeville, MN.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “An apparatus and associated method for a magnetic shield structure for data transduction from a recordable media in a data storage device. Various embodiments of the present invention are generally directed to a data transducer and a magnetic shield structure comprising a write shield magnetic material constructed of exchange decoupled material.”

The patent application was filed on Nov. 12, 2009 (12/616,842).

Covalently bound monolayer for protective carbon overcoat
Seagate Technology LLC, Scotts Valley, CA, has been assigned a patent (8,518,563) developed by eight co-inventors for a “covalently bound monolayer for a protective carbon overcoat.”

The co-inventors are Paul M. Jones,United States Virgin Islands, US Virgin Islands, Xiaoping Yan, Wexford, Pa., Lei Li, Wexford, PA, James Dillon Kiely, Edina, MN, Christopher Loren Platt, Michael J. Stirniman, Fremont, CA, Jiping Yang, San Jose, CA, and Yiao-Tee Hsia, Pleasanton, CA.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A magnetic storage medium may include a substrate, a magnetic recording layer, a protective carbon overcoat, and a monolayer covalently bound to carbon atoms adjacent a surface of the protective carbon overcoat. According to this aspect of the disclosure, the monolayer comprises at least one of hydrogen, fluorine, nitrogen, oxygen, and a fluoro-organic molecule. In some embodiments, a surface of a read and recording head may also include a monolayer covalently bound to carbon atoms of a protective carbon overcoat.”

The patent application was filed on Feb. 23, 2010 (12/711,148).

Data encryption to provide data security and memory cell bit wear leveling
Seagate Technology LLC, Scotts Valley, CA, has been assigned a patent (8,526,605) developed by Donald Preston Matthews Jr., Longmont, CO, for a “data encryption to provide data security and memory cell bit wear leveling.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Method and apparatus for encrypting and storing data to provide data security and memory cell bit wear leveling. In accordance with various embodiments, input data are provided for writing to a target page of memory in a storage array. A seed value is derived from a count value indicative of a number of times a write access has occurred on the target page of memory. A block encryption routine is applied to the input data using the seed value to generate encrypted output data that are thereafter written to the target page.”

The patent application was filed on Oct. 9, 2009 (12/576,544).

Detection system using heating element temperature oscillations
Seagate Technology LLC, Cupertino, CA, has been assigned a patent (8,523,312) developed by Xuan Zheng, Savage, MN, and Timothy William Stoebe, Minnetonka, MN, for a “detection system using heating element temperature oscillations.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A storage system includes a recording head and a compensating resistor. The recording head has a heating element. The compensating resistor is in electrical series with the heating element and is external to the recording head. A method includes applying an alternating current at a first angular frequency to a recording head. A voltage drop across the recording head heating element is measured. A component of the voltage drop is extracted. The component has a frequency that is three times the frequency of the first angular frequency.”

The patent application was filed on Nov. 8, 2010 (12/941,461).

Compound cell spin-torque magnetic random access memory
Seagate Technology LLC, Cupertino, CA, has been assigned a patent (8,526,224) developed by Thomas William Clinton and Werner Scholz, Pittsburgh, PA for a “compound cell spin-torque magnetic random access memory.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A compound magnetic storage cell, applicable to spin-torque random access memory (ST-RAM), is disclosed. A magnetic storage cell includes a magnetic storage element and two terminals communicatively connected to the magnetic storage element. The magnetic storage element is configured to yield any of at least three distinct magnetoresistance output levels, corresponding to stable magnetic configurations, in response to spin-momentum transfer inputs via the terminals.

The patent application was filed on Oct. 29, 2012 (13/662,813).

Compensation for vibration in a storage system
Seagate Technology LLC, Cupertino, CA, has been assigned a patent (8,537,485) developed by five co-inventors for a “compensation for vibration in a storage system.”

The co-inventors are Jeffrey Vincent DeRosa, Burlington, MA, Bin Huang, Savage, MN, Chiyun Xia, Prior Lake, MN, John Lowell Zeller, Victoria, MN, and Peng Yan, Eagan, MN.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A plurality of sensors are used to sense disturbances in a storage system. An adaptive gain component is associated with each of the sensors and provides a gain for each of the sensor signals. The gain of each sensor signal is adapted, individually, based on a correlation of each given sensor signal to the position error signal. This adaptation produces a position correction signal. The position correction signal is applied to a position signal that is used to position the reading and writing components and the storage medium relative to one another. This compensates for both rotary and linear vibration disturbances at the same time.”

The patent application was filed on June 30, 2011 (13/173,841).

Heat source management in storage device
Seagate Technology LLC, Scotts Valley, CA, has been assigned a patent (8,537,644) developed by Michael Henry Lennard, Lyons, CO, and Robert Matousek, Berthoud, CO, for a “heat source management in storage device.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: “An apparatus and associated method is presently disclosed for a control circuitry capable of managing a heat source used in storage applications. Various embodiments of the present invention are generally directed to a heat source directed at a storage medium with a synchronization signal and a serial interface that are each selectively activated via a demultiplexed write gate signal. The selective activation allows for pulsed operation of the heat source resulting in reduced duty cycle and temperature during a write operation.”

The patent application was filed on March 25, 2011 (13/071,930)

Tribological monitoring of storage device
Seagate Technology LLC, Scotts Valley, CA, has been assigned a patent (8,553,350) developed by four co-inventors for “tribological monitoring of a storage device.”

The co-inventors are Lin Zhou, Eagan, MN, Huazhou Lou, Dongming Liu, Eden Prairie, MN, and Vincent Bernard Engelkes, Maple Grove, MN.

The abstract of the patent published by the U.S. Patent and Trademark Office states: ” A system that is capable of monitoring tribological data, such as friction, in a data storage device. In accordance with various embodiments, a magnetoresistive head is separated from a rotating data storage media by an air bearing and attached to a slider that is adjusted through deformation controlled by a heating element. A measurement circuit concurrently monitors friction from the head and power applied to the heating element to determine an MR head clearance. The measurement circuit includes at least a phase filter that eliminates off-phase friction from contributing to the determination of the MR head clearance.”

The patent application was filed on May 27, 2011 (13/117,969).

Non-volatile write cache for a data storage system
Seagate Technology LLC, Cupertino, CA, has been assigned a patent (8,560,770) developed by four co-inventors for a “non-volatile write cache for a data storage system.”

The co-inventors are Jonathan Williams Haines, Boulder, CO, Brett Alan Cook, Westminster, CO, Luke William Friendshuh, Elko, MN, and Mark Allen Gaertner, Vadnais Heights, MN.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The present disclosure provides a data storage system. In one example, the data storage system includes a data storage media component having a plurality of data storage locations. A first set of the plurality of data storage locations are allocated for a main data storage area. The data storage system also includes a controller configured to define a write cache for the main data storage area by selectively allocating a second set of the plurality of data storage locations.”

The patent application was filed on Nov. 13, 2009 (12/618,268).

Articles_bottom
AIC
ATTO
OPEN-E