Seagate Assigned Fithteen Patents

Heat-assisted recording head with one or more surface-plasmonic plates operable as near-field transducer
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,056,135) developed by Peng, Chubing, Eden Prairie, MN, for a “heat-assisted recording head with one or more surface-plasmonic plates operable as a near-field transducer.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A recording head includes a dielectric waveguide that extends towards a media-facing surface of the recording head. A hybrid waveguide is near the media-facing surface and includes the dielectric waveguide and a heat spreader plate having a crosstrack dimension that is at least twice that of a core of the dielectric waveguide. The hybrid waveguide is operable to combine a total internal reflection of the dielectric waveguide with a surface plasmon confinement of the heat spreading plate to excite TM-even mode in the hybrid waveguide. A surface-plasmonic plate is in contact with the heat spreader plate, the second surface-plasmonic plate has a peg extending from an enlarged portion. Light energy from the TM-even mode propagating from the hybrid waveguide to the surface-plasmonic plate causes the surface plasmonic plate to focus the light energy to heat a recording medium.”

The patent application was filed on April 29, 2020, (Appl. No.16/861,459).

Capacitively operated microwave assisted magnetic recording oscillator
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,056,134) developed by Eppler, Walter R., Cranberry Township, PA, for “capacitively operated microwave assisted magnetic recording oscillator.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”An apparatus includes a write pole that stores data on tracks on a data storage medium. The apparatus also includes side shields on first and second sides of the write pole, and a trailing shield above the write pole and above the side shields. The apparatus further includes a microwave assisted magnetic recording oscillator having conductive pads that form capacitors with portions of a conductive film of the data storage medium. The conductive pads are positioned on a medium-facing surface of a slider that includes the write pole, the side shields and the trailing shield.”

The patent application was filed on December 20, 2019, (Appl. No.16/722,886).

Localized data block destaging
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,055,001) developed by Barrell, Michael David, Longmont, CO, and Traut, Zachary David, Denver, CO, for “localized data block destaging.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A system includes a memory and a processor coupled to the memory, where the processor is configured to perform various operations. The operations include receiving, in response to a first read input/output operation, a first location of a first data block. The operations also include executing the first read input/output operation at the first data block at the first location. The operations also include selecting a second location within a first search range for destaging a second data block based at least in part on the first location. The operations also include destaging the second data block at the second location upon a determination that a second read input/output operation is not currently executing or queued for execution.”

The patent application was filed on May 30, 2018, (Appl. No.15/992,271).

Dual wire assisted magnetic recording
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,049,515) developed by Liu, Zengyuan, Eden Prairie, MN, Gage, Edward Charles, Lakeville, MN, Rausch, Tim, Farmington, MN, and Hernandez, Stephanie, Plymouth, MN, for a “dual wire assisted magnetic recording.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A recording head for writing data on tracks of a data storage medium is provided. The recording head includes a writer having a write pole and a trailing shield. The write pole includes a pole tip configured to write on the tracks of the data storage medium. The recording head also includes first and second writing-assistance wires positioned between the pole tip and the trailing shield in a down-track direction to enable a writing-assistance current to be provided to produce an assist magnetic field that augments a write field produced by the write pole.”

The patent application was filed on May 8, 2020, (Appl. No.16/870,538).

Assembly that enables reduction in disk to disk spacing
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,043,235) developed by Mendonsa, Riyan Alex, Edina, MN, Gage, Edward Charles, Lakeville, MN, Gomez, Kevin, Eden Prairie, MN, Herdendorf, Brett R., Mound, MN, and Mohr, Dan, Saint Paul, MN, for an “assembly that enables reduction in disk to disk spacing.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”An apparatus includes a plurality of storage media mounted on a rotatable spindle. The apparatus also includes an actuator with at least one actuator arm configured to translate among the plurality of storage media and at least two heads supported on the at least one actuator arm. Each of the at least two heads is configured to communicate with the plurality of storage media.”

The patent application was filed on February 28, 2020, (Appl. No.16/805,174).

Efficient read and recovery with outer code
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,042,439) developed by Sridhara, Deepak, Longmont, CO, Patapoutian, Ara, Hopkinton, MA, and Reddy, Prafulla B, Longmont, CO, for an “efficient read and recovery with outer code.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”An apparatus may include a circuit configured to initialize a read operation to read one or more requested data segments of a respective data unit having a plurality of data segments. Based on a number of failed data segments of the requested data segments and an erasure capability of an outer code error correction scheme, the circuit may perform erasure recovery to recover the failed data segments. Based on the number of failed data segments, the erasure capability of the outer code error correction scheme, and a threshold value, the circuit may perform iterative outer code recovery to recover the failed data segments.”

The patent application was filed on November 7, 2016, (Appl. No.15/345,440).

Reordered data deduplication in storage
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,042,316) developed by Xie, Hongmei, Milpitas, CA, Alhussien, AbdelHakim, San Jose, CA, Sankaranarayanan, Sundararajan, Freemont, CA, Tang, Alex, Cupertino, CA, Baryudin, Leonid, and Haratsch, Erich Franz, San Jose, CA, for a “reordered data deduplication in storage devices.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A device may include a SSD having multiple storage units and a deduplication control circuit configured to determine whether selected data content to be stored is a duplicate of previous data content already in a first buffer of data buffered to be stored in a set of storage units. The deduplication circuit may be further configured to, based on a determination that the selected data content is a duplicate of first previous data content already buffered in the first buffer, instead of buffering another copy of the selected data content, buffer a first header including a first pointer that associates the first header with the first previous data content already buffered in the first buffer. The deduplication circuit may also be configured to reorder the first buffer such that individual data contents in the first buffer are grouped near headers associated with the individual data contents.”

The patent application was filed on September 9, 2019, (Appl. No.16/564,866).

Access schemes for drive-specific read/write parameters
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,042,298) developed by Mendonsa, Riyan Alex, Minneapolis, MN, Trantham, Jon D, Chanhassen, MN, Reddy, Anil J, Minneapolis, MN, Boddu, Varun Reddy, Singapore, Singapore, and Kulkarni, Ajay Narayan, Longmont, CO, for “access schemes for drive-specific read/write parameters.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A system includes a read/write controller removably coupled to a storage drive. Responsive to detection of a coupling between the read/write controller and the storage drive, the read/write controller retrieves key information from the storage drive, uses the key information to locate adaptives associated with the primary storage medium, and loads the adaptives into volatile memory to configure read/write settings for access to the primary storage medium.”

The patent application was filed on August 27, 2020, (Appl. No.17/004,873).

HAMR apparatus that modulates laser power to reduce differences between track widths of recorded marks
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,037,597) developed by Gilbert, Ian James, Chanhassen, MN, Peng, Peng, Eden Prairie, MN, Rausch, Tim, Farmington, MN, and Thiele, Jan-Ulrich, Sunnyvale, CA, for “heat-assisted magnetic recording apparatus that modulates laser power to reduce differences between track widths of recorded marks.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Two or more different elapsed time values are determined between transitions of a data signal applied to a magnetic write transducer of a heat-assisted magnetic recording apparatus. Two or more different power values of the laser are respectively associated with the two or more different elapsed time values. The two or more different power levels are selected to reduce differences between track widths of recorded marks having the two or more different elapsed time values.”

The patent application was filed on June 29, 2020, (Appl. No.16/915,391).

Separating one or more substrates that are adhesively bonded to carrier
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,037,593) developed by Tian, Ruhai, Eagan, MN, Singer, Gary M, Northfield, MN, and Gunderson, Peter J., Ellsworth, WI, for “methods of separating one or more substrates that are adhesively bonded to a carrier, and related systems and apparatuses.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”The present disclosure relates to separating parts (e.g., sliders and/or row bars) from an adhesive and carrier during the manufacture of parts to be used in a data storage device such as a hard disc drive.”

The patent application was filed on March 20, 2019, (Appl. No.16/358,993).

Multi-piece head gimbal assembly
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,037,589) developed by Deokar, Rohit, and Zambri, Razman, Eden Prairie, MNI, for a “multi-piece head gimbal assembly.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A head gimbal assembly for a hard disk drive includes a slider, a load beam, a gimbal, and a flexure. The gimbal is disposed between the load beam and the slider. The gimbal is configured to provide motive support to the slider as the slider moves in proximity to a media surface. The flexure is disposed between the gimbal and the slider. The flexure includes an electrical trace ribbon configured to provide electrical signal pathways to and from active components of the head gimbal assembly.”

The patent application was filed on May 29, 2020, (Appl. No.16/888,034).

Providing electrical power to one or more heat sources in one or more sliders while lapping said sliders
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,037,586) developed by Sherve, Andrew, Minneapolis, MN, O’Konski, Jeff, Savage, MN, Xiong, Yuhong, Maple Grove, MN, and Habermas, Andrew, Bloomington, MN, for “methods and systems for providing electrical power to one or more heat sources in one or more sliders while lapping said sliders.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”The present disclosure includes methods and systems for lapping a row bar of sliders. According to the present disclosure, an electrical interconnect configuration is provided that permits the net current provided to a row bar to heat electrical heating devices during lapping to be managed so as help prevent exceeding breakdown currents of related electrical channels.”

The patent application was filed on April 10, 2019, (Appl. No.16/380,056).

Processing slider
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,037,585) developed by Wessel, James Gary, Savage, MN, and Gadbois, Jason, Shakopee, MN, for a “method of processing a slider.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”The present invention is directed to the fabrication of head sliders for use in hard disk drives, and in particular the provision and usage of electrical bond pads on the slider surface structure to accommodate needs of the fabrication process as well as slider operation within a disk drive.”

The patent application was filed on April 27, 2018, (Appl. No.15/964,903).

Cryogenic magnetic alloys with less grain refinement dopants
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,031,032) developed by Inturi, Venkateswara, Shakopee, MN, and Mundenar, Joseph, Eden Prairie, MN, for “cryogenic magnetic alloys with less grain refinement dopants.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A method of forming a magnetic element. The method includes cooling a substrate to a cryogenic temperature. The method further includes depositing a magnetic layer with a grain refining dopant on the substrate. The magnetic layer with the grain refining dopant deposited on the substrate cooled to the cryogenic temperature has a magnetic moment that is greater than 2 Tesla and very soft magnetic properties.”

The patent application was filed on April 3, 2017, (Appl. No.15/477,211).

Reduction or elimination of latency penalty associated with adjusting read thresholds for non-volatile memory
Seagate Technology LLC, Fremont, CA, has been assigned a patent (11,024,396) developed by Chen, Zhengang, Haratsch, Erich F., San Jose, CA, and Sankaranarayanan, Sundararajan, Fremont, CA, for “reduction or elimination of a latency penalty associated with adjusting read thresholds for non-volatile memory.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Channel information and channel conditions determined by an Offline Tracking process are used to determine whether or not an adjustment to the read reference voltage can be avoided altogether without detrimentally affecting performance, or, alternatively, to determine a precision with which a read reference voltage adjustment should be made. If it is determined based on the channel conditions that a read reference voltage adjustment can be avoided altogether, read performance is improved by reducing the probability that a read reference voltage adjustment needs to be made during normal read operations. If it is determined based on the channel conditions that a read reference voltage adjustment needs to be made with a particular precision, the read reference voltage is so adjusted. This latter approach is advantageous in that relatively fewer adjustments will be made during normal read operations.”

The patent application was filed on July 22, 2019, (Appl. No.16/518,936).