Seagate Technology Incorporated

Steepstreet, LLC

John Stuart Wright

Andrew D White

David Allen Sluzewski

Michael C Kautzky

Daniel Paul Burbank

Dian Song

Jorge Vicente Hanchi

Lee Walter

Marsha Anne Huha

Charles Everett Hawkinson

Zine-Eddine Boutaghou

Ara Patapoutian

John Christopher Morris

Jason Wayne Riddering

Neal Frank Gunderson

James Morgan Murphy

Razman Zambri

Prafulla Bollampalli Reddy

Hieu Van Nguyen

David Gordon Qualey

Michael Allen Greminger

Hui Su

Eddie Wai Pun

Brian G Molloy

Mehmet Hancer

Clarke McKinnon

Jeff McKinnon

Michelle Elaine Blankenship

Mark James Schaenzer

Zine Eddine Boutaghou

Bradley Jay Ver Meer

Adam Karl Himes

Andrew Robert Motzko

James E Angelo

Stefan Andrei Ionescu

Donald W Janz

Michael S Bowers

Antanas Daugela

Joseph H Sassine

Subra Nagarajan

Rick Pfahl Freeman

Lanshi Zheng

Jagdish L Agrawal

Jeffrey K Berkowitz

Erick J Lindquist

The invention relates to a cell-based computing platform that may be specifically used for website development and management. This cell-based computing platform may further be responsive to an external device, program, or operation such that changes in the value parameter of one or more cells may dynamically trigger an external response.

Cell-based computing and website development platform

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.

Read channel throughput management

A system for poling piezoelectric devices comprises a plurality of thin-film components, a plurality of piezoelectric devices, a poling pad for poling the piezoelectric devices, a plurality of traces, and a plurality of current-limiting elements. The thin-film components are separated by dice lanes to form an array, and the piezoelectric devices are formed on the thin-film components. The traces connect the piezoelectric devices across the dice lanes in parallel to the poling pad. Each current-limiting element is connected in series with one of the piezoelectric devices, in order to limit current to individual piezoelectric devices that experience current-related failure.

Commonly-poled piezoelectric device

A head assembly including one or more transducer elements for controlling head-media spacing is disclosed. The assembly includes detection circuitry configured to receive an input detection signal responsive to the spacing between the head and the data storage media and provide an output measure indicative of the head-media spacing. The output signal is utilized by control circuitry to provide a control input to one of a plurality of transducer elements on the head to protrude a localized portion of the head to adjust head-media spacing.

Head assembly with head-media spacing control

Apparatus for positioning a control object, such as a microactuator used to position a read/write transducer adjacent a data storage medium. In accordance with some embodiments, a piezoelectric transducer (PZT) element is adapted to induce rotational displacement of the control object in a bending mode of operation. The PZT element has a plurality of piezoelectric material layers and a plurality of electrically conductive layers interposed between the piezoelectric material layers. The piezoelectric material layers include a first subset of active layers and at least one non-active layer.

Multi-layer piezoelectric transducer with inactive layers

A head or slider having a sensor element to detect changes in head-media spacing is disclosed. In illustrated embodiments the sensor element includes a piezoelectric sensor layer or similar layer that provides acoustic emission or vibration responsive to changes in head-media spacing. In illustrated embodiments, the sensor element is located proximate to the close point of the head and slider. In embodiments described in the specification, output from the sensor element is utilized to energize a heating element or microactuator to control pole tip protrusion or actuation of transducer elements responsive to changes in head-media spacing.

Head assembly having a sensing element

Method and apparatus for a head gimbal assembly (HGA) which incorporates a microactuator. In accordance with various embodiments, a gimbal assembly has a gimbal island disposed within an aperture of a gimbal plate, which is mechanically decoupled from the gimbal island. At least one microactuator element is attached between the gimbal island and the gimbal plate to allow rotation of the gimbal island independent of the gimbal plate. The gimbal assembly is suspended from a dimple which extends from the gimbal island.

Compact microactuator head assembly

A support assembly includes a base layer, a circuit defined along the base layer, and a first material molded on at least a portion of the base layer. The first material substantially forms a shape of at least a portion of the support assembly. Further disclosed is a molded suspension assembly. The molded suspension assembly includes a thin and elongate metallic substrate and a non-metallic material molded along at least a portion of one side of the metallic substrate. The non-metallic material interlocks with the metallic substrate. The molded suspension assembly includes a transducer support area at or near a first end of the molded suspension assembly.

Suspension assembly with molded structures

An improved microactuator suspension is provided for use with high density storage media. The number of microactuator elements is reduced to one and placed perpendicularly to the longitudinal axis of the suspension arm to maximize the windage and resonance performance and minimize the microactuator's contribution to bending stiffness and the off track bending component. An improved electrical connection eliminates the requirement for a jumper. These improvements reduce cost by reducing part count and assembly complexity.

Cost reduced microactuator suspension

A microactuator comprises a mounting block, a head suspension, a compliant joint for connecting the mounting block to the head suspension, and a piezoelectric element for deforming the compliant joint in order to rotate the head suspension with respect to the mounting block. An encapsulant covers an exposed surface of the microactuator. The encapsulant comprises a self-assembled monolayer formed of an organosilicone or organosilane, where the self-assembled monolayer has a self-limiting thickness of one layer of a molecule.

Microactuator with self-assembled monolayer encapsulant

A channel senses head-to-disc contact vibrations in a vibrational noise spectrum produced in a mass storage device. The channel includes a suspension system with a suspension modal resonance. The channel includes a vibration sensor that senses head-to-disc contact vibrations through the suspension system. The vibration sensor has a sensor modal resonance that overlaps the suspension modal resonance.

Resonant channel for head-to-disc contact vibrations

Growing community of inventors

Edina, MN, United States of America

John Stuart Wright