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| Patent # | Description |
|---|---|
| US-6,493,176 |
Disk drive with variable TPI servo tracks The present invention is directed to utilizing the capabilities of multi-stage actuators in disk drives to write servo tracks that have a variable number of... |
| US-6,493,175 |
Run-out correction adjustment method and system A disk drive system corrects run-out errors without substantial PES transients and without significant response time. The disk drive system includes a servo... |
| US-6,493,174 |
Optical servo system for use with magnetic data storage tape having
magnetic reference indicators Optical servo systems and magnetic data storage tape for use with magnetic data storage drives. The servo system utilizes a head mechanism that includes an... |
| US-6,493,173 |
Headerless disk drive comprising repeatable runout (RRO) correction values
recorded at a user data rate A disk drive is disclosed comprising a track recorded on a disk, wherein the track has repeatable runout (RRO). The track comprises a plurality of embedded servo... |
| US-6,493,172 |
Disturbance rejection of mechanical interaction for dual-actuator disc
drives using adaptive feedforward servo The present invention incorporates an add-on adaptive feedforward controller into the existent track-following servomechanism of a dual-actuator disc drive to... |
| US-6,493,171 |
Adaptive skew setting for a disk drive A method of manufacturing a disk drive (10) including determining and implementing skew values for each head (12a-12d) of the disk drive (10) during a production... |
| US-6,493,170 |
Interference device and position detection device using the same In an interference device, an elastic member elastically contacts a portion of an object to be detected. An optical probe is so constructed that light emitted... |
| US-6,493,169 |
Disk drive employing spindle motor commutation time variation for reducing
acoustic noise A disk drive incidentally generates undesirable acoustic noise during an operation mode and includes a spindle motor having windings and a rotor rotatable at an... |
| US-6,493,168 |
Method for cleaning a slider in a disk drive The present invention is directed to a disk drive that employs a proximity recording interface in which a slider that carries a head is designed to remain in... |
| US-6,493,167 |
Magnetic tape unit Disclosed herein is a magnetic tape unit having a magnetic head for reading and writing data from and onto a magnetic tape. The magnetic tape is traveled in... |
| US-6,493,166 |
Tape cassette and tape recording and/or reproducing apparatus A tape streamer device in which the current arraying state of partitions formed on a tape-shaped recording medium can be known even on addition or deletion of... |
| US-6,493,165 |
Magnetic disk drive There is provided a magnetic disk drive in which the adaptability of read signal processing of the magnetic disk drive is enhanced so that the frequency of retry... |
| US-6,493,164 |
Magnetic recording apparatus and method of magnetic recording A magnetic recording apparatus having a magnetic recording medium having a recording layer formed on a substrate, the recording layer being constituted by... |
| US-6,493,163 |
Increased lock range PLL for constrained data A disk drive system is disclosed that includes a disk device coupled to control circuitry. The disk device transfers a read signal representing data to the... |
| US-6,493,162 |
Frame synchronization for viterbi detector A method and apparatus for synchronizing a Viterbi detector to data frames corresponding to code words read from of a medium is provided. A timing pattern and a... |
| US-6,493,161 |
Pulse-mode writer A pulse-mode data writing protocol is disclosed which reduces the time required to implement a transition in the direction of magnetization of a recording... |
| US-6,493,160 |
Pseudo raid implementation within a single disk drive A single disk drive uses data mirroring techniques to store data within the drive. Each piece of data received by the disk drive for storage is written to at... |
| US-6,493,159 |
Optical element and its manufacturing process An optical device has a base body with a surface, a first optically effective, multilayer system in the base body, terminating at an intersection, and a second... |
| US-6,493,158 |
Lens driving apparatus for optical disc player and printed circuit board
coils for lens driving apparatus for... A lens driving apparatus of a disc player which can avoid the rolling of a movable portion without increasing a weight of a movable portion of an actuator and... |
| US-6,493,157 |
Image-capturing lens An image-capturing lens is formed of front and rear lens groups having negative and positive refractive power, respectively, in order from the object side. The... |
| US-6,493,156 |
High resolution lens A high resolution lens is provided as a condensing lens for collecting light made incident from a light source, of which one face is plane and the other face is... |
| US-6,493,155 |
Thin infrared lens A novel thin infrared lens comprising an infrared lens and a hard and thin substrate that allows infrared lights to penetrate, is disclosed. The infrared lens... |
| US-6,493,154 |
Method and apparatus for further enhanced high-speed perception (EHP) of a
moving object using an optical... Presented are electronically controlled optical shutter spectacles for achieving biofeedback between the operation of the optical shutter spectacles when worn... |
| US-6,493,153 |
Mechanism for moving optical element of an optical system First lens frame has first front and rear shaft bearings that engage with the first guiding shaft along the optical axis, and a second shaft bearing that engages... |
| US-6,493,152 |
Wide converter lens An afocal, wide converter lens is provided in order to shorten the focal length of a main lens, thereby shortening the projection distance that is needed to... |
| US-6,493,151 |
Variable focus lens by small changes of the equatorial lens diameter A variable focus lens is constructed by making small changes in the equatorial diameter of an elastically deformable lens. The lens may be deformed by radial... |
| US-6,493,150 |
Real image mode variable magnification finder A real image mode variable magnification finder has an objective optical system with positive refracting power, an image erecting optical system, and an ocular... |
| US-6,493,149 |
Optical unit and image display device thereof A single plate type optical unit and display device to utilize light with high efficiency in a simple method is configured so a dichroic mirror separates light... |
| US-6,493,148 |
Increasing laser beam power density A group of diode lasers emitting beams at a first wavelength is positioned above and below a stack of laser diodes emitting beams at a second wavelength. The... |
| US-6,493,147 |
Optronic device equipped with a focusing mirror for visor display An optronic device fitted with a focusing mirror for projection on a visor. A plane mirror is placed between the last active component of the optronic device and... |
| US-6,493,146 |
Image display apparatus An image display apparatus has a reflective display device, an illumination optical system with a reflective surface A for guiding light from a light source to... |
| US-6,493,145 |
Solar lighting apparatus A solar lighting apparatus includes a transparent dome. The transparent dome is provided, at its ceiling center, with a control box accommodating a stepping... |
| US-6,493,144 |
Optical component An optical component is produced by forming an anti-reflection film on a surface of a molding of a norbornene resin having a polar group. The anti-reflection... |
| US-6,493,143 |
Diffractive optical element and optical system incorporating the same A diffractive optical element, as well as an optical system incorporating the same, has a comparatively large minimum grating pitch and, hence, is easy to... |
| US-6,493,142 |
Zoom lens and photographing apparatus having it A zoom lens includes the following lens units in the order named from the object side a first lens unit of a positive optical power, which has a first lens... |
| US-6,493,141 |
Multi-functional optical device utilizing multiple polarization beam
splitters and non-linear interferometers The present invention provides a multi-functional separator which may be used as a demultiplexer or as a multiplexer in wavelength division multiplexed optical... |
| US-6,493,140 |
Polarization splitter and combiner and optical devices using the same A polarization splitter and combiner for processing a beam containing a first polarization and a second polarization to spatially separate these polarizations by... |
| US-6,493,139 |
Optical switch The present invention relates to optical switches in which switching occurs by changing the rotation of the plane of polarization by application of an externally... |
| US-6,493,138 |
Microscopic optical system A microscopic optical system which is used in an ultraviolet range of short wavelengths and has good off-axis performance, such as chromatic aberration of... |
| US-6,493,137 |
Monocular mounting for multi-channel panoramic night vision goggle having a
hot shoe connector There is disclosed a multi-channel panoramic night vision goggle (PNVG) system having two monocular subassemblies, each having a first channel and a second... |
| US-6,493,136 |
Clip-on optical mounting structure An optical accessory of the type used by medical professionals is coupled to a clip-on mount, enabling the assembly to be used with ordinary eyeglass frames. The... |
| US-6,493,135 |
Temperature regulated microscope A microscope with an objective turret (2) carrying an objective (1) and with a specimen holder (4) serving to receive a specimen (3), in order to assure an... |
| US-6,493,134 |
Surgical microscope The invention concerns a microscope having a power and data transfer system between a microscope body (1) and an external control device or peripheral device (2,... |
| US-6,493,133 |
System and method for increasing capacity of undersea cables A method of increasing usable bandwidth on a long-haul cable system having at least one optical fiber, the method comprising the steps of: (a) effecting... |
| US-6,493,132 |
Monolithic optically pumped high power semiconductor lasers and amplifiers The present invention, a monolithic, high power, single mode electro-optic device is disclosed. The electro-optic device generally includes an electrically... |
| US-6,493,131 |
Wavelength-locking of optical sources A device is used to wavelength lock two optical signals to some frequency offset. A photomixer section produces a frequency test signal from the beat component... |
| US-6,493,130 |
Laser imaging device A laser imaging device is provided with a laser source that emits a laser beam including a plurality of wavelength components. The wavelength components are... |
| US-6,493,129 |
Tunable optical filter An optical filter having a changeable optical transmittance versus wavelength characteristic curve to variably filter a light. The curve maintains a fixed... |
| US-6,493,128 |
Chromogenic window assembly construction and other chromogenic devices A chromogenic window panel assembly, and a chromogenic skylight each includes an outer panel and a chromogenic member having an optical property which varies... |
| US-6,493,127 |
Modulation systems using dual channel optical modulators An optical modulation system for externally modulating two independent optical signals with first, second, third and fourth electrical input signals with two... |
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