Nayna Networks, Inc.

Magnecomp Corporation

Xiao Yang

Dale Alan Gee

Visit Thaveeprungsriporn

Szu-Han Hu

Abhijeet D Sathe

Anup Nayak

Jenghung Chen

Edgar D Sheh

Richard Koonwai Wong

Michael Barrett Wolfson

A method (and apparatus) for operating a disk drive apparatus. The method includes moving a movable member about a fixed position to move a read/write head coupled to a slider to a selected track on a disk. The selected track is at least one of a plurality of tracks. The method includes adjusting a position of the read/write head using an actuating device integrated on the gimbal. The actuating step moves the read/write head relative in a manner normal to the track on the magnetic disk to align the read/write head on the track using a finer and faster alignment of the read/write head than the moveable support member.

Apparatus for PZT actuation device for hard disk drives

A disk drive apparatus. The apparatus has a first drive device and a support member coupled to the first drive device. The support member has a tongue portion and a gimbal portion. The tongue portion is coupled the gimbal portion. A fixed drive device is formed within a first portion of the tongue portion. A movable drive device is operably coupled to the fixed drive device and formed within a second portion of the tongue portion. A read/write head is coupled to the movable drive device. A voltage source is coupled between the fixed drive device and the movable drive device to cause movement of the read/write head by forming an interaction between the fixed drive device and the movable drive device.

Actuation device and method for high density hard disk drive head

A fast method of switching optical signals using micro-mirror structures and control. The method selects an optical path for a micro-mirror device, the mirror device being coupled to a torsion bar device. The micro-mirror device is moved or pivoted about a torsion bar device, the micro-mirror device being operated about the torsion bar device through an operating range. The micro-mirror device is subjected to a mechanical force from the torsion bar and being subjected an electro-static force applied to the micro-mirror device. The method positions the micro-mirror device to a selected switching location within the operating range a selected region within a predetermined time. The micro-mirror device is controlled during a portion of time during the moving by receiving position signals periodically at a predetermined frequency from a sensing device coupled to the micro-mirror device. The position signals are indicative of a position of the operating range and selectively applying an electrostatic force based upon one or more of the position signals such that the micro-mirror device is moved to the selected switching location without substantial oscillation of the micro-mirror device within the predetermined time of less than 10 milliseconds.

Fast switching method for a micro-mirror device for optical switching applications

A method for fabricating an array of mirrors disposed on a die from a substrate. The method includes placing a substrate comprising a plurality of die thereon on a stage. Each of the die comprises a plurality of movable mirror devices in an array configuration. Each die comprises a peripheral region defining a street that surrounds the array configuration. The method forms a plurality of tabs that join one die to another die in the street of the substrate. Each of the tabs also is separated from each other in a sequential manner by a recessed region between at least two of the tabs. The street defined by the tabs and the recessed region defined therebetween in a sequential manner.

Method for fabricating improved mirror arrays for physical separation

A method for switching signals using one of a plurality of mirrors in an array structure. The method includes determining an optical path to be formed between an input fiber and an output fiber. The method also includes determining a set of mirrors to be used to form the optical path. The set of mirrors includes at least a first mirror. The first mirror is coupled to a mechanical spring assembly and an actuation assembly. The method captures an analog signal indicative of a spatial position of the first mirror using a position sensing device. The sensing device is coupled to the mirror. The method also converts the signal analog signal into a digital signal. The method processes the digital signal indicative of the spatial position of the mirror using the digital signal processing device to obtain a characteristic of the mirror. The method provides a control signal based upon the characteristic of the mirror. The converts the control signal into an analog control signal. The method uses the analog control signal with the actuation assembly to set a desired position of the first mirror.

Method for transparent switching and controlling optical signals using mirror designs

An integrated circuit and mirror device. The device includes a first substrate comprising a plurality of electrode groups, wherein each of the groups comprises a plurality of electrodes. A mirror array is formed on a second substrate. Each of the mirrors on the array has a mirror surface being able to pivot about a point (e.g., fixed point, region) in space. Each of the mirrors has a backside surface operably coupled to one of the electrode groups. A bonding layer mechanically couples the first substrate to the second substrate, whereupon the backside surface of each mirror faces one of the electrode groups. The device also has a drive circuitry coupled to each electrode groups. The drive circuitry is configured to apply a voltage to any one of the electrodes in each of the electrode groups. The drive circuitry is disposed in the first substrate and being adapted to pivot each of the mirror faces about the point in space.

Integrated mirror array and circuit device

An optical deflection device. The device includes a substrate (e.g., silicon, silicon on insulator) comprising a plurality of die thereon. Each of the die has a plurality of movable mirror devices in an array configuration. Each of the movable mirrors is supported by at least one torsion bar to a frame structure, which is formed on the substrate. Each of the die also has a peripheral region defining a street that surrounds the array configuration to define the die. A plurality of tabs is formed in the street to join one die to another die on the substrate. At least two of the tabs are separated from each other in a sequential manner by a recessed region defined there between. The tabs and the recessed region are positioned to each other in a sequential manner.

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Fremont, CA, United States of America

Xiao Yang