Other

Maxtor Corporation

Oliver W Northrup

Phillip J Edwards

Joseph John Vandenberg

Bradley S Levin

Michael M O'Toole

Thomas H Blair

Siegfried B Fleischer

Diana Ching Chen

Brett Matthew Zaborsky

Michael S Lebby

Erhard Theodor Schreck

Lin Guo

Wei Guo

John Edward Scura

Xiaokun L Chew

Yunfeng Li

Mark Heimbaugh

William Flynn

Charles Steven Joiner

Tim Glassburn

A system provided for protecting a disk drive from impact damages. More specifically, a disk drive is provided that includes an accelerometer interconnected to a printed circuit board that detects free fall of the disk drive. In addition, the velocity of spinning disks of the disk drive is also monitored to assess changes in velocity thereof that may indicate the presence of a tumbling condition. Furthermore, the change in acceleration measured by the accelerometer is monitored to prevent false indications of free fall due to common vibrations. Thus an enhanced system is provided that protects disk drives from the effect of free falls under a wide variety of conditions and allowing for drops from shorter distances to be identified.

Mobile hard disk drive free fall detection and protection

An optical transceiver module is disclosed with improved digital diagnostic integrated circuits. The optical transceiver includes an electrical-to-optical transmitter and an optical-to-electrical receiver each coupled to a digital diagnostic integrated circuit. A bi-directional 2-wire control interface is provided and a microcontroller couples the digital diagnostic integrated circuit to the control interface. Various methods are described for using the microcontroller to incorporate changes or diagnostic functions in the digital diagnostic integrated circuit.

Optical transceiver module with improved DDIC and methods of use

An electro-optic module with an optical coupling efficiency, the module comprising a receptacle assembly, wherein an end of the receptacle assembly is capable of receiving a light guiding element and wherein an opposite end of the receptacle assembly is capable of receiving an optical lens assembly positioned therein the receptacle assembly. An optoelectric package which includes an optoelectronic device is capable of being affixed to the opposite end of the receptacle assembly wherein an optical axis extends from the end to the opposite end of the receptacle assembly such that the light guiding element and the optoelectric device are in communication through a lens included in the optical lens assembly. The optical lens assembly is held fixedly in place against an inward periphery of the receptacle assembly such that a distance between the lens and the optoelectronic device can be adjusted to adjust the optical coupling efficiency.

Optical/electrical module

A radially symmetrical optoelectric module includes a receptacle assembly with a symmetrical tubular ferrule and a first lens. The ferrule defines an axial opening extending along an optical axis. The ferrule is formed radially symmetrical about the optical axis with the first lens engaged in the ferrule along the optical axis. One end of the ferrule is formed to receive an end of an optical fiber such that the end is positioned along the optical axis and adjacent the first lens. An optoelectric package includes an optoelectric device and a second lens. The second lens is positioned adjacent the optoelectric device and positioned along the optical axis so that light traveling along the optical axis appears at the optoelectric device and passes through the second lens.

Radially symmetrical optoelectric module

An optoelectric module includes a cylindrical ferrule defining an optical axis and having a first end constructed to receive an optical fiber aligned along the optical axis. An optical element, including a lens, is engaged in the ferrule between the first and second ends and positioned to convey light along the optical axis. The second end of the ferrule is closed by a base. An optical component is mounted on the base so that light is directed through the lens from the optical component to the optical fiber or from the optical fiber to the optical component. Either a laser driver or an amplifier is mounted on the base and electrically connected to the optical component and external connections are made to the laser driver or the amplifier by electrical traces on a surface of the base, vias through the base, or flex leads mounted on the base.

Optoelectric module

Optical alignment apparatus includes a first element mounting a first lens and a light source and a second element mounting a second lens and a light receiving structure. The first lens is placed a first distance from the light source and is constructed to collimate light received from the light source. The first and second elements are mounted relative to each other to position the second lens a third distance from the first lens and to receive the collimated light from the first lens. The second lens is positioned a second distance from the light receiving structure to focus the collimated light on the light receiving structure. The first and second lens are constructed so that the first and second distances are dependent upon each other and the third distance is independent of the first and second distances.

Optoelectric alignment apparatus

The optoelectric alignment apparatus and lens system includes a glass ball positioned to receive light from a light source along an optical axis. A second lens is positioned to receive light from the glass ball and to supply the received light to a light receiving structure. The glass ball provides most of the optical power of the lens system so that the second lens provides only minor optical correction. The lens system is mounted by means of a molded plastic body that extends axially along the optical axis with the second lens molded into the body. The body includes a light inlet end and a light outlet in a surface lateral to the optical axis and defines a glass ball receiving cavity adjacent the light inlet end fixedly gripping the glass ball.

Lens system and optoelectric alignment apparatus

Growing community of inventors

Mountan View, CA, United States of America

Oliver W Northrup