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| Patent # | Description |
|---|---|
| US-6,381,094 |
Shield structure with a heat sink layer for dissipating heat from a read
sensor One or two shield structures is provided for a read head wherein each shield structure has a heat sink layer for dissipating heat from the read sensor and a... |
| US-6,381,093 |
Thin film magnetic head with magnetic films with increasing widths from a
surface facing a recording medium The present invention relates to a thin film magnetic head which eliminates the problems of degradation in the recording magnetic field pitch and recording bleed... |
| US-6,381,092 |
Spacer rings to compensate for disk warpage A disk drive having spacers to compensate for disk warpage is described. The spacers are positioned on opposite sides of a disk with each spacer contacting the... |
| US-6,381,091 |
Disk drive apparatus A disk drive apparatus of the present invention, includes: a movable portion, a stationary portion disposed around the movable portion, and a damping portion... |
| US-6,381,090 |
Hard disk drive head-media system having reduced stiction and low fly
height A head and disk system for use in a disk drive includes a slider having a surface that contacts the disk. This disk contacting surface of the slider is textured... |
| US-6,381,089 |
Tape cassette storage and accessing system with closely spaced layered
cassettes A compact tape cassette or cartridge storage and accessing system includes a longitudinally extending frame with two endless link chains, one on each side of the... |
| US-6,381,088 |
Apparatus for developing a dynamic servo signal from data in a magnetic
disc drive and method Apparatus using information about the extent of errors in sensed data for performing as a control function at least one of adjusting the position of a magnetic... |
| US-6,381,087 |
Information storing device and method for controlling same to
record/reproduce information by selecting one of... An information storing device and an information processing device having a memory for registering a plurality of working modes at recording/reproduction and a... |
| US-6,381,086 |
Programmable active damping for high-speed write driver Programmable active damping of the overshoot in the bipolar write driver output current waveform in the write head of a hard disk drive is provided by... |
| US-6,381,085 |
Zero forcing adaptive equalization in a disk drive read channel The invention includes disk drive circuitry, systems, and methods. The disk drive system comprises control circuitry and a disk device. The disk device stores... |
| US-6,381,084 |
Preventing overrun in a disk controller by using timer interrupts from a
microprocessor to halt sequencer A sequencer overrun prevention method includes the steps of: initializing a sequencer; reading a timer value indicating when the sequencer begins operation;... |
| US-6,381,083 |
Multilevel signal equalization utilizing nonlinear maps In a recording/playback system, increased information is achieved by 4 level biased magnetic recording where the maximum amplitude 4 level recording signal... |
| US-6,381,082 |
Arrangement for reading information form a record carrier An arrangement for reading information from a record carrier, such as in a HDD, include a read head (R.sub.mr1), an amplifier (74) for amplifying the signal read... |
| US-6,381,081 |
Flexure-ring for centering a concave lens in a bore of a housing for an
optical system A flexure-ring is provided for centering a lens in a bore of a housing with 3N lens contacting stubs, where N is an integer equal to or greater than one. The... |
| US-6,381,080 |
Bi-stable optical element actuator device The present invention is a bistable optical element actuator device utilizing a powered means to move an actuation arm, to which an optical element is attached,... |
| US-6,381,079 |
Optical system and optical apparatus having the same An optical system includes, in order from an object side to an image side, a first lens unit of positive optical power, and a second lens unit of negative... |
| US-6,381,078 |
Optical device An optical scanning device according to the present invention includes a lens to convert divergent rays from a laser diode to parallel or convergent rays, a slit... |
| US-6,381,077 |
Scanning microlithographic apparatus and method for projecting a large
field-of-view image on a substrate A simple -1X, catadioptric projection relay system (e.g., a modified Wynne-Dyson relay) is combined with a linear scanning and object and image indexing systems... |
| US-6,381,076 |
Zoom lens barrel A zoom lens apparatus having an optical axis includes a zoom cam tube arranged to rotate around the optical axis and having a cam groove for moving a variator... |
| US-6,381,075 |
Barrier opening and closing apparatus A barrier opening and closing apparatus for opening and closing a barrier according to a rotation of a lens barrel containing an optical lens system includes a... |
| US-6,381,074 |
Light collecting optical system A light collecting optical system wherein the position where light is collected is scanned in the optical axis direction by using a wavefront converting element... |
| US-6,381,073 |
Single refractive element and segmented mirror multiple beam spacer A segmented mirror with alternating reflective and transmissive surfaces and a refractive tilt place which laterally displaces two parallel beams are used as a... |
| US-6,381,072 |
Lenslet array systems and methods A stacked array magnifier (SAM) forms a magnified, demagnified or unit image of an object. The SAM includes one or more non-refractive lenslet arrays and one or... |
| US-6,381,071 |
Lenticular device A lenticular device in which first and second arrays of lenticular elements are located on first and second surfaces of the device. The first and second arrays... |
| US-6,381,070 |
Method and apparatus for lighting A method and apparatus for a lighting system with light collection from a plurality of light sources including natural sunlight, distribution and control of said... |
| US-6,381,069 |
Fiber Bragg grating optical filter with a constant group-delay response in
its working band The invention relates to the field of optical fiber wavelength division multiplexed transmission, and more particularly to the field of narrow-band optical... |
| US-6,381,068 |
Reflective projection screen and projection system Reflective front projection screens capable of projecting an image with enhanced contrast and a wide viewing angle in the presence of relatively high levels of... |
| US-6,381,067 |
Telescope with rearview mirror A telescope is provided with a rearview mirror having a mirror surface opposite to the observer. The rearview mirror is located on both sides of the eyepiece,... |
| US-6,381,066 |
Integrated semiconductor optical amplifier system A semiconductor optical amplifier system comprises a hermetic package. In the typical implementation, this hermetic package is a standard 0.75 inch.times.0.5... |
| US-6,381,065 |
Optical pump unit for an optical amplifier A method and apparatus is provided for pumping an active medium in an optical amplifier. The active medium substantially maximizes amplification when pumped at a... |
| US-6,381,064 |
Method for gain equalization, and device and system for use in carrying out
the method The present invention relates to a method for gain equalization, for example. First, an optical transmission line including an optical amplifier having a gain... |
| US-6,381,063 |
Long band optical amplifier An optical amplifier comprises: a first gain medium having an optical host that contains a rare earth dopant and a first pump that supplies optical energy at a... |
| US-6,381,062 |
Optical data modulation system with self-damped diffractive light modulator A system for modulating a beam of light in accordance with an input data stream having a data rate greater than 2 MHz, includes a source of light for directing... |
| US-6,381,061 |
Pixel structure having deformable material and method for forming a light
valve A light valve capable of operating in an "off" state for reflecting light and in an "on" state for diffracting and reflecting light. The valve includes a... |
| US-6,381,060 |
Total internal reflection light modulating microstructure devices A light modulating switch (210) including a switching element (218) having a first portion (226) of electro-optic material to which first and second electrodes... |
| US-6,381,059 |
Optical shutter The present invention pertains to an optical shutter comprising an organic free compound, preferably a radical cation or a radical anion, wherein the organic... |
| US-6,381,058 |
Digital imaging system for assays in well plates, gels and blots An electronic imaging system is disclosed, for assessing the intensity of calorimetric, fluorescent or luminescent signal in a matrix consisting of wells,... |
| US-6,381,057 |
Multi-beam scanning apparatus A multi-beam scanning apparatus includes a light source having a semiconductor laser chip in which a plurality of light emitting points are arranged such that... |
| US-6,381,056 |
Dark pulse generation and transmission A number of optically cascaded electroabsorption modulators (EAM) are electrically biased to provide an optical time division multiplexed (OTDM) signal. The... |
| US-6,381,055 |
Transceiver positioning in free-space optical networks Methods and apparatus for safe and reliable telecommunication using a telecommunication network that employs substantially unguided, free-space, point-to-point,... |
| US-6,381,054 |
Optical pulse transmission system, optical pulse transmitting method, and
optical pulse detecting method An optical transmission system is provided, which permits high-precision optical transmission of a signal even if the signal has a high accurate timing, an... |
| US-6,381,053 |
Fast frequency hopping spread spectrum for code division multiple access
communication networks (FFH-CDMA) An improved method and apparatus for optical and radio frequency implementation of a fast frequency hopping spread spectrum communication for code division... |
| US-6,381,052 |
Multiplexors with a flat top spectral channel shape A multiplexing/demultiplexing optical circuit provides a demultiplexed output spectrum of channels having a flat amplitude response without sacrificing optical... |
| US-6,381,051 |
Switch employing partially reflective coating A distributed matrix switch comprises a number of collimators each comprising a ferrule and a GRIN lens. A partially reflective coating is provided at the GRIN... |
| US-6,381,049 |
Multi-port optical multiplexer element A four-port Wavelength-Division-Multiplexing (WDM) element is disclosed that can be employed for various purposes in optical communication networks, particularly... |
| US-6,381,048 |
Wavelength division multiplexed system having reduced cross-phase
modulation Resonances in cross-phase-modulation (CPM) impairment occur in wavelength-division-multiplexed (WDM) transmission systems, having multiple equal... |
| US-6,381,047 |
Passive optical network using a fabry-perot laser as a multiwavelength
source A passive optical network (PON) comprises an optical device for producing light at a plurality of optical frequencies, an optical receiver for receiving light... |
| US-6,381,046 |
Routing method for ring networks, such as WDM ring networks for optical
communication We disclose a method for routing a set of demands in a ring network that comprises nodes interconnected by directed links, in which each demand may be routed... |
| US-6,381,045 |
Method and apparatus for bidirectional communication over a single optical
fiber Dual concentric core fiber is used for optical communication. Inbound messages lying in a first wavelength channel are received from a terminal portion of the... |
| US-6,381,044 |
Method and apparatus for correcting aberrations in photon collection
devices A cover plate on a holographic optical element (HOE) device corrects for aberrations, such as spherical aberrations. The HOE device includes an emulsion... |
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