Patent application number | Description | Published |
20080310852 | Misalignment tolerant free space optical transceiver - In accordance with an aspect of the invention, a system has a transmitter and a receiver, where the transmitter includes a beam source and an optical element. The beam source produces a beam that represents information, and the optical element alters the beam so that the beam has a uniform intensity over a cross-sectional area. The receiver is separated from the transmitter by free space through which the beam propagates and includes an active area positioned to receive a portion of the beam that the receiver converts into a received signal. To accommodate possible misalignment, the cross-sectional area of the beam is larger than the active area by an amount that accommodates a range of misalignment of the receiver with the transmitter. | 12-18-2008 |
20090034985 | Optical interconnect - An optical interconnect includes a first circuit board having an optical source and an optical receiver; and a second circuit board having data source and an optical modulator optically coupled with the optical source and optical receiver, wherein the optical modulator is configured to encode data from the data source into an optical signal from the optical source. The optical receiver is configured to receive the optical signal from the optical modulator. A method of optical communication includes generating on a first circuit board an optical signal directed at a second circuit board; modulating the optical signal with data at the second circuit board; reflecting the optical signal to the first circuit board; and demodulating the optical signal to receive the data at the first circuit board. | 02-05-2009 |
20100232738 | METHODS OF MANIPULATING OPTICAL ENERGY WITHIN A WAVEGUIDE - A micro-ring configured to selectively detect or modulate optical energy includes at least one annular optical cavity; at least two electrodes disposed about the optical cavity configured to generate an electrical field in the at least one optical cavity; and an optically active layer optically coupled to the at least one optical cavity. A method of manipulating optical energy within a waveguide includes optically coupling at least one annular optical cavity with the waveguide; and selectively controlling an electrical field in the at least one annular optical cavity to modulate optical energy from the waveguide. | 09-16-2010 |
20110006284 | PHOTONIC STRUCTURE - A photonic structure includes a plurality of annealed, substantially smooth-surfaced ellipsoids arranged in a matrix. Additionally, a method of producing a photonic structure is provided. The method includes providing a semiconductor material, providing an etch mask comprising a two-dimensional hole array, and disposing the etch mask on at least one surface of the semiconductor material. The semiconductor material is then etched through the hole array of the etch mask to produce holes in the semiconductor material and thereafter applying a passivation layer to surfaces of the holes. Additionally, the method includes repeating the etching and passivation-layer application to produce a photonic crystal structure that contains ellipsoids within the semiconductor material and annealing the photonic crystal structure to smooth the surfaces of the ellipsoids. | 01-13-2011 |
20140209821 | VIEWING-ANGLE IMAGING - An example apparatus may include a light source for illuminating a sample, an objective lens positioned on a light path extending from the sample, a lenslet array having a plurality of lenslets and positioned along the light path to receive light from the objective lens. The lenslet array may be positioned along the light path at substantially a Fourier plane of the sample. The example apparatus may also include a detector positioned along the light path approximately one lenslet focal length from the lenslet array. The plurality of lenslets of the lenslet array may correspond to portions of the detector. Each lenslet of the lenslet array may transmit to a corresponding portion of the detector an image of the same portion of the sample from a different viewing angle. | 07-31-2014 |
20140240960 | DISPLAY HAVING A BACKPLANE WITH AN EDGE SURFACE THAT MAKES AN ANGLE WITH THE TOP SURFACE - A display is disclosed. The display has a backplane with a top surface and an edge surface. The edge surface makes an angle α with respect to the top surface. An optical system is used to create a collimated light beam that is coupled to the edge surface. The collimated light beam makes an angle β with respect to the top surface. The optical axis of the light beam has a refracted angle β′ with respect to the top surface. Angles α and β are selected such that β′ is no smaller than α. | 08-28-2014 |
20150192782 | OPTICAL DEVICES BASED ON NON-PERIODIC SUB-WAVELENGTH GRATINGS - Various embodiments of the present invention are directed to optical devices comprising planar lenses. In one aspect, an optical device includes two or more planar lenses, and one or more dielectric layers. Each planar lens includes a non-periodic, sub-wavelength grating layer, and each dielectric layer is disposed adjacent to at least one planar lens to form a solid structure. The two or more planar lenses are substantially parallel and arranged to have a common optical axis so that light transmitted through the optical device substantially parallel to the optical axis is refracted by the two or more planar lenses. | 07-09-2015 |
20150288145 | VERTICAL-CAVITY SURFACE-EMITTING LASERS WITH NON-PERIODIC GRATINGS - Various embodiments of the present invention are directed to surface-emitting lasers with the cavity including at least one single-layer, non-periodic, sub-wavelength grating. In one embodiment, a surface-emitting laser comprises a grating layer configured with a non-periodic, sub-wavelength grating, a reflective layer, and a light-emitting layer disposed between the grating layer and the reflector. The non-periodic, sub-wavelength grating is configured with a grating pattern that controls the shape of one or more internal cavity modes, and controls the shape of one or more external transverse modes emitted from the surface-emitting laser. | 10-08-2015 |
20150333479 | UNIDIRECTIONAL RING LASERS - A laser includes an active ring, a passive waveguide, and a reflector. The active ring is to generate light. The passive waveguide is associated with the active ring to capture generated light. The reflector is associated with the passive waveguide to cause captured light from the waveguide to be coupled into the active ring to trigger domination of unidirectional lasing in the active ring to generate light. | 11-19-2015 |
20150355403 | DIRECTIONAL GRATING-BASED BACKLIGHTING - A directional grating-based backlight includes a light guide to guide light and three sets of diffraction gratings. The diffraction grating sets are to selectively couple out portions of light to be guided by the light guide. The light is to propagate within the light guide in three different propagation directions separated in angle by about 120 degrees. The sets of diffraction gratings are to couple out different portions of the guided light as substantially collimated light using diffraction coupling. The substantially collimated light is to be emitted from the directional grating-based backlight in substantially the same direction. | 12-10-2015 |
Patent application number | Description | Published |
20080317666 | Colonic Delivery of Active Agents - Drug delivery devices that are orally administered, and that release active ingredients in the colon, are disclosed. In one embodiment, the active ingredients are those that inactivate antibiotics, such as macrolides, quinolones and beta-lactam containing antibiotics. One example of a suitable active agent is an enzyme such as beta-lactamases. In another embodiment, the active agents are those that specifically treat colonic disorders, such as Chrohn's Disease, irritable bowel syndrome, ulcerative colitis, colorectal cancer or constipation. The drug delivery devices are in the form of beads of pectin, crosslinked with calcium and reticulated with polyethyleneimine. The high crosslink density of the polyethyleneimine is believed to stabilize the pectin beads for a sufficient amount of time such that a substantial amount of the active ingredients can be administered directly to the colon. Advantageously, the amount of polyethyleneimine is sufficient to allow a substantial portion of the pectin beads to pass through the gastrointestinal tract to the colon without releasing the active agent, and is also sufficient such that the pectin beads are sufficiently degraded in the colon to release an effective amount of the active agent. | 12-25-2008 |
20090047314 | MICROENCAPSULATION SYSTEMS AND APPLICATIONS OF SAME - The invention relates to microencapsulation systems which are characterised in that they are developed from oily substances or sugars and in that they form an essentially organised assembly corresponding to stacks of crystalline structures. The inventive systems can be used for the microencapsulation of one or more substances which are of interest, such as therapeutically-active substances, or which can be used in cosmetics. | 02-19-2009 |
20090162339 | GALENIC FORMULATION FOR COLON-TARGETED DELIVERY OF ACTIVE INGREDIENTS - The invention concerns multiparticulate galenic formulations for oral administration and designed for colon targeted delivery of active principles selected from the group comprising enzymes capable of inactivating macrolides and the like, enzymes capable of inactivating quinolones and β-lactamases. | 06-25-2009 |
20090324568 | Colonic Delivery of Adsorbents - Orally administrable, site-specific (colonic), particulate delivery systems including adsorbents are disclosed. When delivered specifically to the colon, they can remove various substances present in, or as they reach, the colon. Methods of treatment using the delivery systems, and methods of preparing the delivery systems, are also disclosed. The particulate delivery systems are based on adsorbent matrices encapsulated into and/or onto particles, which selectively deliver the adsorbents to the colon. Representative drug delivery devices include pectin beads, which can optionally be crosslinked with metal ions such as zinc and/or calcium. The delivery system protects the adsorbent and prevents its adsorbing effect in the upper gastro-intestinal (GI) tract. When the particles are made from pectin, and the beads are administered to the colon, specific pectinolytic enzymes in the colon degrade the pectin, allowing the adsorbent to be released and to be fully active. Antibiotics, toxins, and other absorbable substances present in the colon will then be inactivated by adsorption into or onto the adsorbent. | 12-31-2009 |
20110281948 | COSMETIC AND PHARMACEUTICAL FORMULATIONS OF CALIXARENE MOLECULES - The invention relates to the use of calixarenes for preventing or limiting the transfer of an actinide in the body from a site of skin contamination. | 11-17-2011 |
20120107367 | Site-Specific Intestinal Delivery of Adsorbents, Alone or in Combination with Degrading Molecules - Compositions which deliver adsorbents, alone or in combination with active drug “degrading molecules,” in a site-specific manner to the intestine, and which eliminate or at least lower the concentration of residual unwanted material within the intestine, and methods of treatment using the compositions, are disclosed. The compositions are ideally designed to specifically release the adsorbents in a programmed manner at a specific site of the intestinal tract. Programmed delivery prevents adsorbents from interfering with the normal absorption process of a given molecule after oral absorption, until it reaches the lower part of the small intestine. The compositions can be used to adsorb, and therefore remove, any residual drug, metabolite thereof, or bacterial toxin after oral or parenteral administration which would otherwise cause adverse effects in the lower intestine and/or colon. | 05-03-2012 |
20120231084 | GALENIC FORM SUITABLE FOR ABSORBING, IN A SPECIFIC MANNER, THE UNDESIRABLE MOLECULES IN THE DIGESTIVE TRACT - The present invention relates to a galenic form comprising particles capable of specifically adsorbing the undesirable molecules present in the digestive tract, to the method for preparing same and to the use thereof in particular for producing a medicine intended for preventing or treating undesirable effects linked to an imbalance of the intestinal and/or colonic flora that can result for example from treatment with antibiotics. | 09-13-2012 |
Patent application number | Description | Published |
20100183222 | System and method for edge-enhancement of digital images using wavelets - Systems, methods, and techniques are provided for performing any one or more of edge-preserving image sharpening, edge-preserving image smoothing, edge-preserving image dynamic range compression, and edge-aware data interpolation on digital images, wherein a pixel prediction module is adapted for coupling to a memory storing pixel data representative of a digital image and extracts from the image predicted pixel values using robust smoothing. The predicted pixels are stored in a memory and respective detail values equal to the difference between respective original and predicted values are computed. A pixel update module computes approximation values by averaging the respective detail values with original pixel values using robust smoothing, and stores the approximation values for subsequent rendering. The prediction and update modules run recursively and a manipulation module increases or decreases the detail values and the approximation values depending on their magnitude and depending on the kind of edge enhancement required. | 07-22-2010 |
20100259651 | METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR SINGLE IMAGE DE-HAZING - A method, apparatus and computer program product are provided for recovering a haze-free image given a single input image. The method may include receiving a single input image I, wherein the input image is made up of a plurality of pixels. A surface radiance vector J of the input image I may be modeled as a product of a surface albedo coefficient R and a shading factor l. The method may further include determining, for each of the plurality of pixels, a value of a transmission t of the pixel, such that a covariance C | 10-14-2010 |
20120328210 | METHOD AND SYSTEM FOR GENERATING AN OUTPUT IMAGE OF INCREASED PIXEL RESOLUTION FROM AN INPUT IMAGE - A method and system ( | 12-27-2012 |
20130343669 | BLUR-KERNEL ESTIMATION FROM SPECTRAL IRREGULARITIES - A method for deriving a blur kernel from a blurred image is provided herein. The method may include the following steps: obtaining a blurred image B, being a product of a blur kernel k applied to an original image I; calculating f | 12-26-2013 |
20140219579 | APPLYING RAPID NUMERICAL APPROXIMATION OF CONVOLUTIONS WITH FILTERS FOR IMAGE PROCESSING PURPOSES - A computer implemented method for A computer implemented method for applying a numerical approximation of a convolution of image I as represented by hierarchical signals a | 08-07-2014 |
Patent application number | Description | Published |
20090249155 | METHOD AND APPARATUS FOR DECODING - Aspects of the disclosure can provide a method and an apparatus to decode a data stream based on multiple transmissions with efficient usages of storage and power resources. The method for decoding can include receiving a first plurality of encoded code blocks corresponding to a first transmission of a transport block, decoding the first plurality of encoded code blocks into decoded code blocks, error detecting the decoded code blocks, and storing a decoding history of the decoded code blocks. Further, the method can include receiving a second plurality of encoded code blocks corresponding to a retransmission of the transport block. The second plurality of encoded code blocks can map the first plurality of encoded code blocks, respectively. The method can selectively decode a subset of the second plurality of encoded code blocks based on the decoding history. In addition, the method can include storing soft bits for code blocks that failed decoding. The soft bits can be a combination of soft bits from multiple transmissions. The memory size for storing the soft bits can be reduced by dynamically freeing memory space associated with successfully decoded code blocks. | 10-01-2009 |
20110065443 | BLOCK ENCODING WITH A VARIABLE RATE BLOCK CODE - A control channel encoder includes a determiner to determine a current value of K for encoding control signals of a length M, wherein K is a function of a code rate for a data channel. A table generator generates first and second block encoding matrices, each of the first and second block encoding matrices having a variable length, from a fixed block encoding matrix by variably repeating rows from the fixed block encoding matrix to produce a repeated matrix of length K, puncturing the repeated matrix a first time to generate the first block encoding matrix, and puncturing the first block encoding matrix a second time to generate the second block encoding matrix. A block encoder utilizes the block encoding matrix to encode M input control bits as K encoded control bits. | 03-17-2011 |
20110177835 | MULTI-USER COMPRESSION SCHEMES - A method in a communication system, in which multiple transmitters transmit respective messages to a receiver over a communication channel, includes allocating respective resources of the communication channel to the messages so as to cause, for each message, a respective likelihood of interference between the message and at least one other message to depend on a respective impact of the interference on an overall performance measure defined for the communication system. The messages are transmitted from the transmitters over the communication channel using the allocated resources. | 07-21-2011 |
20130151920 | METHOD AND APPARATUS FOR DECODING - Aspects of the disclosure can provide a method and an apparatus to decode a data stream based on multiple transmissions with efficient usages of storage and power resources. The method can include receiving a first plurality of encoded code blocks corresponding to a first transmission of a transport block, decoding the first plurality of encoded code blocks into decoded code blocks, error detecting the decoded code blocks, and storing a decoding history of the decoded code blocks. Further, the method can include receiving a second plurality of encoded code blocks corresponding to a retransmission of the transport block. The second plurality of encoded code blocks can map the first plurality of encoded code blocks, respectively. The method can selectively decode a subset of the second plurality of encoded code blocks based on the decoding history. In addition, the method can include storing soft bits for code blocks that failed decoding. | 06-13-2013 |
Patent application number | Description | Published |
20120140537 | ACTIVE RECTIFICATION CONTROL - An active rectification system includes an active rectifier, a pulse width modulation (PWM) control, and a closed loop vector control. The PWM control portion is configured to control switching of the active rectifier and the closed loop vector control is configured to generate the required duty cycles for the PWM signals that regulate the DC voltage output and force a three-phase current input of the active rectifier to align with a three-phase pole voltage input of the active rectifier. | 06-07-2012 |
20120257427 | ACTIVE RECTIFICATION OUTPUT CAPACITORS BALANCING ALGORITHM - An active rectification system includes an active rectifier that converts an alternating current (AC) input to a direct current (DC) output. The active rectifier includes a plurality of switching devices and at least a first output capacitor and a second output capacitor connected at the DC output of the active rectifier. A controller includes a DC output regulation portion and an output capacitor balancing portion, wherein the DC output regulation portion monitors the DC output and in response generates control signals for regulating the DC output to a desired value. The output capacitor balancing portion monitors first and second output capacitor voltages associated with the first and second output capacitors, respectively, and generates an accumulated adjustment value that modifies the control signals provided by the DC output regulation portion to balance the first and second output capacitor voltages. | 10-11-2012 |
20120268974 | HIGH-RESOLUTION AND LOW-RESOLUTION SENSORS FOR PHASE DETECTION - A phase detection system includes a low-resolution sensor and a high-resolution sensor for monitoring an alternating current (AC) voltage. A phase detector receives voltage samples from both the low-resolution sensor and the high-resolution sensor. The phase detector monitors the low-resolution sensor to detect approaching zero cross events (i.e., monitored voltage values approaching zero). In response to an approaching zero-cross event, the phase detector uses the magnitude of the high-resolution voltage samples measured on either side of the zero cross event to determine the phase of the monitored AC voltage. | 10-25-2012 |
20130088903 | CONTROL ARCHITECTURE FOR A MULTI-LEVEL ACTIVE RECTIFIER - The present invention is a control architecture for an active rectifier. The control architecture monitors the AC input voltage provided to the active rectifier at a sampling rate grater than the frequency of the AC input voltage and calculates, in response, a phase estimate associated with the monitored AC input voltage that is updated with each new sample of the AC input voltage. Based on the phase and frequency estimates, along with monitoring of the AC input current and DC output voltage, the control architecture calculates voltage commands that are used to generate the pulse-width modulation (PWM) controls signals for provision to solid-state switching devices in the active rectifier. | 04-11-2013 |
20140328100 | ACTIVE RECTIFICATION CONTROL - A method of active rectification control of an active rectifier includes detecting a phase angle and a frequency of a voltage input of the active rectifier; regulating a DC output voltage of the active rectifier with d-q components of a pole voltage; and aligning a reference current input of the active rectifier to the d-q components of the pole voltage. | 11-06-2014 |