Terastor Corporation

Prysm, Inc.

Other

Maxoptix Corporation

Vitesse Semiconductor Corporation

Versatile Optical Networks, Inc.

Optimem

Alan Claude Burroughs

Roger A Hajjar

Brian Tremaine

Warren Dalziel

Jahja I Trisnadi

David L Kent

Amit Jain

Guolin Ma

Mark A Pajdowski

Brian T Bonn

Gordon R Knight

David Blankenbeckler

John Al-Samarrie

John Julian Uebbing

Phillip H Malyak

Donald Krall

Donald F Johann

Robert Jackson

Feng Li

LeRoy A Volz

Frank Whitehead

Neil T Phipps

The present disclosure generally relates to a LPD system having a plurality of detectors for detecting light reflected from the back surface of the screen. The detectors are positioned to detect light from one or more portions of the screen that are not directly in front of the detector.

Lambertian servo sensor position and timing

Scanning beam display systems using fluorescent screens and various servo feedback control mechanisms to control display imaging qualities.

Servo-assisted scanning beam display systems using fluorescent screens

Methods and systems for improving imaging quality and power efficiency of scanning beam display systems using fluorescent screens are disclosed. In various embodiments, beam shaping mechanisms for maximizing overlap between the beam cross-section and the florescent element corresponding to each color sub-pixel of the screen, as well as pulse width and timing adjustments, are introduced to reduce imaging noise and improve power efficiency of the display system.

Scanning beam display systems using fluorescent screens and various servo feedback control mechanisms to control display imaging qualities, including techniques and mechanism for measuring and correcting pyramidal errors of a polygon scanner.

Correcting pyramidal error of polygon scanner in scanning beam display systems

Techniques and systems for controlling an optical switch array based on local and global optical monitoring and feedback controls. Each optical switch element includes a local optical monitoring mechanism to form a local feedback control to lock the switch element at a desired orientation. The global optical monitoring is used to adjust at least one switch element in the path of the signal beam to maintain an overall alignment.

Control techniques and devices for an optical switch array

Structures of storage media for optical storage systems, especially for systems in the near-field configuration to couple radiation between the optical head and the media at least in part by evanescent fields.

Disk mastering based on near-field optical systems

A driver in a far-field magneto-optical (&ldquo;MO&rdquo;) system has a read/write head that includes an objective lens for focusing a laser beam onto an MO disk. The objective lens is housed in an objective lens holder. A magnetic biasing coil is mounted to the bottom of the objective lens holder, between the objective lens and the MO disk. The coil includes an aperture to allow the laser beam to pass through the coil and onto a surface of the disk. The objective lens holder is moved up and down as the disk spins by an actuator to maintain the laser beam in focus on the MO disk surface. This maintains the objective lens and the coil precisely at predetermined distances from the MO disk surface, despite irregularities in the disk and disk wobble.

Magnetic field modulation coil

Controllable optical switches in response to feedback signals from optical position sensors that measure switch orientations. The optical position sensors may include local sensors that monitor and measure orientations of individual switches and global sensors that monitor and measure overall alignment of signal beams. Such switches may be used to form non-blocking switching arrays.

Actively-controllable optical switches based on optical position sensing and applications in optical switching arrays

A laser driver circuit for a light source in an optical recording system to maintain the read current at a substantially constant level. This circuit can reduce a recovery transient time for a transition from the write mode to the read mode.

Laser driver for an optical recording system

A wedge data writer writes wedge data, including track identification information, that are spatially-aligned along the radial direction of an optical disk. The wedge data are written at the beginning of a wedge when at least one radial groove or pit molded into the disk is detected.

Track identification generation for optical disk

Magneto-optical storage media designed for optical storage systems such as disk drives with optical flying heads. Dielectric layers are designed and implemented to maximize optical coupling between the flying optical head and the media and to reduce variations of signals with flight height of the flying optical head.

Storage media for optical storage systems

An optical position detector which has adjacent detector cells connected to each other in a zig-zag pattern offers a wider dynamic range than a detector with a vertical separation line during transition between a read laser power and a write laser power. This allows use of a fast response bi-cell in place of a slower position sensing device (PSD). The optical position detector has detector cells coupled to each other in a zig-zag pattern. Each detector cell produces a signal when a light beam is focused onto the cell to indicate a location of the light beam relative to the cell.

Zig-zag-patterned position sensor system

Optical storage systems based on air-bearing-suspended optical heads in a near-field configuration. Such a system comprises an optical head for reading and writing data and a head positioning system, an optics module including beam relay optics and signal detectors, and a medium holding and loading module to hold an optical medium. An electronic control system is also provided to control the system operation. The optical head includes a near-field lens with a high index of refraction and in a near-field configuration in which the near-field lens has a numerical aperture greater than unity when the spacing between an exit facet of the optical head and a recording layer in the optical medium is a fraction of one wavelength of optical beam.

Growing community of inventors

San Jose, CA, United States of America

Alan Claude Burroughs