Abstract: A method of modeling wireless communication channels in angular domain is disclosed. The method includes considering radiation patterns 101, 102 of the transmitter antenna and the receiver antenna, wherein the radiation patterns are represented by antenna characteristics sampled at a plurality of angular directions. A method of channel estimation based on the method of modeling wireless communication channel in angular domain is also disclosed.

Abstract: A lens actuation device for an optical system includes a housing, a carrier at least partially installed in the housing, and a plurality of transducers arranged around the carrier in the housing. All the transducers are coupled with the mount, and at least one transducer includes at least one magnet and at least one coil. At least one transducer includes at least one yoke. All the transducers when powered on may generate independent or consistent movement to cause the mount to make linear movement, rotation, or both relative to the housing. An optical system adopting the lens actuation device and a camera using the same are also presented. The device of the present invention uses the transducers to drive the carrier, such that the lens set is driven to make linear movement, rotation, or both, thereby achieving the flexible manipulation of the lens.

Abstract: A programmable voltage generator has software-programmable registers that may be decoded to generate control bits that turn on select transistors that control a variable resistor network. An external power voltage is input to a regulator transistor, which has a channel resistance controlled by a gate voltage. The channel resistance of the regulator transistor produces a regulated voltage as an output. An op amp compares a reference voltage to a feedback voltage to generate the gate voltage. The feedback voltage is taken from a tap within the variable resistor network. The variable resistor network has select transistors that select one resistor between the regulated voltage and an upper node, and that select one resistor between a lower node and ground. Switches select a tap within a series of resistors between the upper and lower nodes. Y (fine) control bits select the tap while X (coarse) control bits enable select transistors.

Abstract: An antenna system comprising a first antenna element, a second antenna element, the first and second elements defining at least in part a slot element, an active switching network in communication with one or both of the first and second antenna elements, the switching network operable to cause the antenna system to resonate in each of two modes: a first mode wherein the first element resonates at a first set of frequencies, and the first element and a second element resonate together at a second set of frequencies; and a second mode wherein the first element resonates at the first set of frequencies, and the slot element resonates at a third set of frequencies.

Abstract: The present invention provides an illumination module, and a display and a general lighting apparatus using the same. Said illumination module includes a plurality of light guiding strips arranged in juxtaposition with a predefined distance; a plurality of light sources, disposed on at least one end of said light guiding strips respectively for providing the light into said light guiding strips; and a plurality of light reflecting units, disposed between said light guiding strips for reflecting the light from said light guiding strips. The light reflecting units according to the present invention can guide the light from the sides of light guiding strips or other light not toward the right side of the illumination module back to the right side of the illumination module, and thus improving the light output efficiency and uniformity.

Abstract: A method comprises receiving a transmission including at least two Orthogonal Frequency Division Multiplexing (OFDM) symbols, estimating a sampling frequency offset associated with the OFDM symbols at least in part by employing a term representing a density of pilots in the OFDM symbols, and compensating for the sampling frequency offset using the estimated sampling frequency offset.

Abstract: Apparatuses for backlighting and manufacturing processes thereof are disclosed. There is provided a backlight module. The backlight module comprises a double-sided circuit board with thermal conducting material as one of the core layers; a plurality of light source components mounted on the first surface of the circuit board; and, a plurality of electronic components mounted on the second surface of the circuit board. The thermal conducting core layer discharges heat generated by the light source components. The circuit board has at least one window on the surface layer at the second surface to expose the thermal conducting core layer for thermal dissipation. As such, the component heights on the illuminating side of the circuit board are unified, and the reflector can be made as a smooth planar sheet to provide a more uniform backlight illumination compared to a single-side circuit board design. Further, such an arrangement reduces the complexity in manufacturing the reflector and hence the cost thereof.

Abstract: An alumina substrate and method of making an alumina substrate using oxidation is provided. Generally, photoresist masks are used to protect selected areas of an aluminum layer. The unprotected or exposed areas of the aluminum layer are then oxidized during a photolithography process. The protected, unexposed areas of the aluminum layer retain their conductive properties while the oxidized areas are converted to alumina, or aluminum oxide, which is non-conductive. Accordingly, an alumina substrate having conductive areas of aluminum is formed. In one embodiment, the alumina substrate includes an alumina layer, one or more aluminum vias formed within the alumina layer, each of the one or more aluminum vias extending between the bottom of the alumina layer and the top of the alumina layer, wherein the one or more aluminum vias are integrally formed within the alumina layer.

Abstract: The invention discloses a imaging device, comprising an imaging module, used for optical to electrical signal conversion, which comprises at least a first imaging unit and a second imaging unit, the first imaging unit used for capturing an image, the second imaging unit used for detecting the movement of the image or the imaging device; a control and processing module, used for controlling the imaging module to output electrical signals, and for processing the electrical signal to generate and to output the motion signal and image signal. The invention also discloses an image capture device which uses the said imaging device. The imaging device can output the motion signal and the image signal simultaneously by adding the second imaging unit used for detecting the movement of the image or the imaging device; consequently better captured image quality can be obtained. Also, the structure can become simpler and the manufacture cost can be lower.

Abstract: An optical module, a camera, and a mobile terminal device are provided. The optical module includes a lens unit, a lens driving unit, a driving control unit, and a vibration sensing unit. The vibration sensing unit is configured to detect vibration/shaking of the optical module, the camera, or the mobile terminal device and transmit a detected signal to the driving control unit. The driving control unit generates a corresponding vibration/shaking compensation signal according to the detected signal of the vibration sensor, and performs a vibration/shaking compensation movement by driving the lens with the lens driving unit. The optical module is applied in the camera and the mobile terminal device. The present invention has not only an auto-focusing function, but also an added anti-vibration function, so as to overcome influences on image degradation resulted from vibration/shaking of the optical module, the camera, or the mobile terminal device.

Abstract: A decision feedback-based communication system comprising a unit for computing an estimated Error Propagation Probability (EPP) for a plurality of received signals, and a unit for receiving the EPP estimation and improving detected signal quality based thereon. The system can be a coded system or an uncoded system.

Abstract: A distance measuring apparatus includes an optical transmitter having an optical source for transmitting modulated optical signals towards a remote object, and an optical receiver for detecting the modulated optical signals upon reflection from the remote object. The optical receiver includes a photo-detector which is configured for gated detection of optical signals by gating signals applied thereto. The gating signals are arranged to be in a constant time or phase relationship with the modulated optical signals. The optical receiver calculates the distance of the remote object with reference to delay information between transmitted and detected optical signals, with the delay information being determined by gated detection of optical signals at the photo-detector.

Abstract: A heat exchange structure includes elongated air ducts. Each air duct has a first opening and a second opening at two ends of the air duct to allow air to enter and exit the air duct, respectively. The heat exchange structure includes an exterior heat exchange surface and interior heat exchange surfaces, in which the exterior heat exchange surface is configured to receive thermal energy from heat generators that are mounted on the exterior heat exchange surface, and the exterior heat exchange surface dissipates a portion of the thermal energy received from the heat generators and transfers another portion of the thermal energy to the interior heat exchange surfaces. The interior heat exchange surfaces are in the elongated air ducts and configured to exchange thermal energy with air flowing in the air ducts, enhancing air flow in the air ducts by buoyancy of heated air.

Abstract: An optoelectronic distance sensor with slant component 200 having a spacer 202 bonded on a mother substrate 201 is disclosed. The spacer 202 has slant surface for receiving one or more optoelectronic components 204, such as an optical sensor, that are mounted at an angle to the mother substrate 201. Such electronic components 204 are bonded on a daughter substrate 203 which attaches to the spacer 202 at the slant surface. The optoelectronic assembly 200 can be manufactured at chip-level, including by one ore more of exemplary methods disclosed herein.

Abstract: A light source includes a plurality of lighting elements arranged to illuminate different regions of visual perception. Circuitry coupled to the light source is configured to supply power to a first subset of the lighting elements according to a first waveform and to a second subset of the lighting elements according to a second waveform out of phase with the first waveform.

Abstract: A method of making a thin gallium-nitride (GaN)-based semiconductor structure is provided. According to one embodiment of the invention, the method includes the steps of providing a substrate; sequentially forming one or more semiconductor layers on the substrate; etching a pattern in the one or more semiconductor layers; depositing a dielectrics layer; forming a photoresist on a portion of the dielectrics layer, wherein the portion of the dielectrics layer is deposited on the one or more semiconductor layers; depositing a primer; removing the photoresist layer, wherein the primer on the photoresist is also removed; depositing a superhard material, wherein the superhard material forms in the pattern; and removing the substrate. Accordingly, the superhard material may be selectively deposited in only areas where the superhard material is desired. Vertical GaN-based light emitting devices may then be formed by cutting the semiconductor structure.

Abstract: Subject matter disclosed herein may relate to energy harvesting piezoelectric modules as may be used, for example, in power supplies for tire pressure monitoring systems.

Abstract: A controller for a backlight for a liquid crystal display (LCD) panel has at least two methods for determining illumination value for the backlight. The controller selects between the two methods based on properties of the image being displayed. The properties of the image include its color and its intensity.

Abstract: A method for routing data through a network of devices is disclosed. Each device using the information provided by immediate neighbors 1013 dynamically determines which immediate neighbor 1013 should be the next hop to the destination 1018.

Abstract: A method and apparatus for image enhancement in a display illuminated by a lighting device. Enhancement is via use of a non-linear mapping function. An illumination level for the lighting device is determined and used with the mapping function to find a compensation factor for each pixel of the image. The brightness property of each pixel is adjusted by its compensation factor.