Samsung Electronics Co., Ltd.

Neophotonics Corporation

Fontecha, Ed

Quirke, David J.

Mcginnis, Brian

Seto, Sam

Long, Wilson

Ho, Calvin

Zhao, Liang

Tarter, Thomas S.

Wilson Long

Seong-Woo Kang

Woocheol Jeong

Kevin Tu

Tai-Yeon Hwang

Liang Zhao

Tu K Nguyen

Yun-Sik Han

Thomas S Tarter

Calvin Ho

David James Quirke

Brian P McGinnis

Sam Seto

Ja Choon Koo

Ed Fontecha

David J Quirke

Brian Mcginnis

An optical device with a non-rectilinearly shaped optical integrated circuit over a substantially flat portion of a riser, the riser also equipped with a relief structure that is in thermal contact with a stabilizing brace that is in turn connected to two portions of the non-rectilinearly shaped optical integrated circuit. The non-rectilinearly shaped optical integrated circuit exhibits reduced center wavelength drift.

Stable center wavelength performance in non-rectilinearly shaped optical integrated circuit chip

A disk drive that has an air deflector which deflects at least a portion of airflow away from an actuator arm assembly of the drive. The air flow is typically generated by a rotating disk of the disk drive.

Air razor and disk limiter for a hard disk drive

A hard disk drive which has a housing that can attenuate noise. The housing may include a first layer that is attached to a second layer and a third layer located between the first and second layers. The layers may be designed to create a transfer function that attenuates, or rolls off, acoustic noise within a range of frequencies.

Acoustic insulator for controlling noise generated in a mass storage device

A disk drive housing that can attenuate noise. The housing may include a first layer that is attached to a second layer, and a gap located between the first and second layers. The layers and gap may be configured to attenuate acoustic energy within a relatively broad frequency range.

Hard disk drive cover that contains a helmholtz resonator which attenuates acoustic energy

An actuator resonance tester is provided for testing the resonance of an actuator arm in a hard disk drive device. The tester includes an actuator arm, a pivot, one or more weights, a voice coil, a voice coil motor, an accelerometer, and a processor. The one or more weights are formed on the actuator arm to simulate the mass of at least one read/write head. The base and the test housing are affixed to either end of the pivot to provide it with proper boundary conditions to simulate the boundary conditions of a fully-assembled hard disk drive device. The voice coil and the voice coil motor move the actuator arm rotationally around the pivot. The accelerometer is placed on the actuator arm to measure the horizontal acceleration of the actuator arm. The processor determines the resonance of the actuator arm based on the arm's measured horizontal acceleration. In this way, the resonance of the actuator arm can be tested without the need to construct the entire hard disk drive device.

Actuator resonance tester for a disk drive

Growing community of inventors

San Jose, CA, United States of America

Wilson Long