1767results about How to "Increase signal strength" patented technology

Systems and methods for beamforming in radio frequency identification (RFID) applications are disclosed. A beamforming system uses a distributed architecture and techniques for antenna beamforming using a feedback control loop to direct radio frequency (RF) energy onto a specific region, referred to as an interrogation zone, which includes a calibration node where one or more RFID tags may be located. The distributed architecture of the beamforming system is resistant to fading and shadowing effects, providing accurate RFID reader operation even in environments with multi-path reflections or environmental changes, such as people moving around or changes in the location of equipment.

The present invention is directed to the selective provision of interference canceled signal streams to demodulating fingers in a communication receiver. According to the present invention, potential interferer signal paths are identified. Signal streams having one or more potential interferer signals removed or canceled are created, and a correlation is performed to determine whether the strength of a desired signal path increased as a result. If the correlation indicates that the strength of a desired signal path was increased by the signal cancellation, the interference canceled signal stream is provided to the demodulation finger assigned to track the desired signal path. If the correlation determines that the strength of the desired signal path did not increase as a result of performing interference cancellation, the raw or a different interference canceled signal stream is provided to the demodulation finger.

A remotely accessible power controller communicates power reduction command signals by power line carrier (PLC) signaling over existing AC power distribution conductors for automatically disconnecting building lighting loads. Turn-off command signals from a local or remote controller automatically disconnect building lighting loads according to a time-of-day schedule to comply with mandated energy consumption codes applicable to the automatic shutoff of electrical lighting. Load shedding (selective turn off and / or dimming) command signals transmitted from public or private utility companies automatically disconnect or reduce building lighting loads in accordance with load curtailment agreements to limit total connected power consumption below an agreed level. The power controller is connected by a minimum amount of retrofit wiring into an existing end-user alternating current power distribution network, for example, a building power distribution network having AC power conductors that service multiple lighting loads interconnected in one or more power phase groups. Each dimming lighting load is equipped with an addressable dimming module for decoding and executing dimming and turn-on and turn-off power reduction commands. Fluorescent lamps are equipped with addressable electronic dimming ballasts.

A system is disclosed for generating and transmitting data signals to the surface of the earth while drilling a borehole, the system operating by generating pressure pulses in the drilling fluid filling the drill string. The system is designed to maximize signal strength while minimizing the probability of jamming by drilling fluid particulates. The system uses a rotary valve modulator consisting of a stator with flow orifices through which drilling fluid flows, and a rotor which rotates with respect to the stator thereby opening and restricting flow through the orifices and thereby generating pressure pulses. The flow orifices with the stator in a "closed" position are configured to reduce jamming, and to simultaneously minimize flow area in order to maximize signal strength. This is accomplished by imparting a shear to the fluid flow through the modulator, and minimizing the aspect ratio and maximizing the minimum principal dimension of the closed flow area. A preferred embodiment and three alternate embodiments of the modulator are disclosed.

Distributed antenna systems provide location information regarding client devices communicating with remote antenna units (RAU) in a service area. The location information can be used to determine the location of client devices relative to the RAU(s) with which the client devices are communicating. A location processing unit (LPU) is configured to provide location information for client devices. The LPU includes a control system configured to receive uplink radio frequency (RF) signals communicated by a client device wirelessly communicating to a plurality of RAUs. The control system determines location information for a client device based on which RAU receives the strongest signal from the client device.

An optical reader including an image sensor, imaging optics, a short range aiming assembly, and a long range aiming assembly. The short range aiming assembly may comprise a plurality of LEDs. The long range aiming assembly may comprise a laser diode assembly which projects an aiming pattern that is readily visible at reading distances of several feet. The optical reader can be configured so that long range aiming assembly is enabled or disabled depending upon a present operating condition.

The invention discloses an alignment system applied in a lithography device, which uses three periods phase grating with crude precision combination in a substrate marker or a substrate station reference marker, uses a first order diffraction light of the three periods as an alignment signal, simultaneously realizes a big capture range and gets high alignment precision, gets labeled deformation information and other useful information, and through the optimum design of the match and / or the layout of the three periods, the influence on an alignment position by asymmetrical deformation of the marker is effectively reduced.

A method for generating electromagnetic waves in the ELF / ULF comprising the steps of using a ground-based Horizontal Electric Dipole (HED) antenna to send electromagnetic pulses upwardly in the E-region of the ionosphere to form an oscillatory or pulsed electric field; allowing said pulsed electric field to interact with magnetized plasma of the lower ionosphere to generate a pulsed horizontal and vertical current which have associated Horizontal and Vertical Electric Dipole moment; and allowing them to radiate.

An apparatus, including an alert device having a receiver, and method are provided for receiving alert information broadcast via particular telecommunication transmitters operating within a cellular, PCS, or other wireless telecommunications network, thereby allowing delivery of a message. The alert device includes a receiver for receiving digital messages in the form of broadcast messages on a digital control channel, a microcomputer having a monitoring circuit that monitors received digital messages for the presence of an alert code associated with alert messages regarding an alert condition, and a plurality of peripheral devices which produce various tones and flashing lights in response to the alert device's reception of an appropriate alert message. The alert device can be provisioned over the air to respond to particular preferred system providers and controlled user groups. The alert device can also control and external device to provide a warning to the user.

A network protocol for the delivery of wireless broadband integrated services digital network (ISDN) using asynchronous transfer mode (ATM).

An antenna system that includes a plurality of lens sets. Each lens set includes a lens and at least one feed element. At least one feed element is aligned with the lens and configured to direct a signal through the lens at a desired direction.

A design and proof of concept of a new type of WLAN, complete with simulation and results from the simulation has been described. Each AP Node is implemented as a self-contained embedded OS unit, with all algorithms resident in its Operating system. The normal day-to-day functioning of the AP node is based entirely on resident control algorithms. Upgrades are possible through a simple secure communications interface supported by the OS kernel for each AP node. Benefits provided by a wireless network, as proposed in this invention, are that: it installs out of the box; the network is self-configuring; the network is redundant in that mesh network formalism is supported, ensuring multiple paths; load balancing is supported; there is no single point of failure; allows for decentralized execution; there is a central control; it is network application aware; there is application awareness; there is automatic channel allocation to manage and curtail RF interference, maximize non interference bandwidth and enable seamless roaming between adjoining wireless sub networks (BSS) and it supports the wireless equivalent for switching—for seamless roaming requirements.

An apparatus for providing location-specific alert information associated with an alert condition relevant to a geographical area may include a receiver adapted to receive transmissions comprising formatted text on a communication channel of a wireless bi-directional communication network; a peripheral device operable to indicate an alert condition, including displaying the formatted text; and a controller communicatively coupled to the receiver and the peripheral device. The controller is operable to monitor a communication channel of the network for the receipt of a transmission of location-specific alert information from a transmitter servicing a geographical area and to operate the peripheral device in response to the reception of the transmission of the location-specific alert information to display the formatted text. The location-specific alert information is broadcast within the geographical area by at least one transmitter of the wireless bi-directional communication network having communication channels and transmitters which are each positioned to provide communication services to specific geographical areas serviced by the communication network.

A method, system and RF tag for tracking and locating travel bags during their shipment (e.g. by airlines) by providing owner's identification, destination, historical, and other pedigree information about such shipped travel bags. The RF travel tags are active (e.g. battery or solar cell powered), operate at low radio frequencies, below 15 MHz (e.g. 128 kHz), and comprise a large storage device which stores information. The stored information comprises both identification information that identifies said travel bag and an owner (e.g. name, address) thereof and database information concerning characteristics of the travel bag, the database information including the destination, origin, travel history of the bag, and historical characteristics of said travel bag. The RF travel bag tag has a first loop antenna, a transceiver operatively connected with the first antenna and operable to receive a first RF interrogation signal at a low frequency not exceeding 15 MHz (e.g. 128 kHz) from a first reader and to transmit RF signals in response.

Described herein are novel polynucleotides associated with liver cancer. The polynucleotides are miRNAs, miRNA precursors, and associated nucleic acids. Methods and compositions are described that can be used for diagnosis, prognosis, and treatment of liver cancer. Also described herein are methods that can be used to identify modulators of the disease-associated polynucleotides. Also described herein are methods and compositions for linear amplification and labeling of a targeted nucleic acid. The amplified targeted molecules may be used in hybridization techniques like Luminex and Microarray analysis.

An antenna implantable through minimally invasive techniques, preferably comprising a coil with conductive probes is provided. The antenna is preferably superelastic nickel-titanium having an insulative coating. The antenna may conduct a signal originating from a device external to the body of the implantee, or from another implanted device connected to the antenna depending on whether the antenna is employed for sending, receiving, or transceiving signals. Signals may contain data, operational commands, and may be used to transfer power. The implantable antenna may be connected to another implanted device, such as a blood pressure monitor, or may be implanted as a stand-alone device for purposes such as stimulating tissue.

A method of operating a wireless communication system (FIG. 4) is disclosed. The method includes receiving downlink control information (702) for transmission to a user equipment (UE) in enhanced physical downlink control channel (EPDCCH). A pseudo-random number generator is initialized (706) for generating a pseudo-random sequence. A plurality of demodulation reference signals (DMRS) are generated with the pseudo-random sequence. The plurality of DMRS is mapped with the EPDCCH and transmitted to the UE (712).

A system and method for enhancing and displaying a target object, that generally comprises: a processor that demodulates the rate of movement of the target object to produce a demodulated signal; computes the power of the demodulated signal; creates an image sequence, based on the power of the demodulated signal, that comprises the enhanced periodic motion pixels; and forms an image sequence of the enhanced periodic motion pixels to form an image display of at least the target object; and an image display device to display the target object.

The nasal bone conduction wireless communication transmitting device of the present invention comprises a bone conduction inputting device; a wireless communication transmitting device electrically connected to the bone conduction inputting device; a bone conduction outputting device having a second oscillator; and a carrier device for supporting those abovementioned devices. The invention is characterized by that the carrier device is a carrier provided on the nose for making the bone conduction outputting device and the bone conduction inputting device supported by it closely touching the skin of the nasal bone, and making the oscillating wave of the bone conduction outputting device being sent to the ear via the nasal bone conduction after the resonance in the nasal cavity; and converting the sound provided through the nasal conduction resonance by the bone conduction inputting device into an electrical wave, and then transmitting it to the wireless communication transmitting device for signaling.

An apparatus for writing and reading holograms, comprising a spatial light modulator (SLM) operable in phase mode, having a plurality of pixels for generating an object beam that overlaps with a reference beam; a holographic recording medium (HRM) in the path of the object beam; and a first lens element disposed in the path of the object beam between the SLM and the HRM; wherein the HRM is disposed at or near the Fourier transform plane of the first lens element.

Enhanced reception of transmitted signals in a communication system is achieved by synchronously combining transmissions from a cluster of transmitters at a distant receiver. The transmitters coordinate transmissions such that each substantially simultaneously transmits the same signal on the same communication channel. As a consequence of the spatial diversity of the transmitters, the transmitted signals arrive at the receiver at different times. The receiver essentially treats the different transmitted signals as though they were different multipath signals from a single transmitter. A multipath equalizer or combiner is used to determine timing offsets among the received signals, and the received signals are time aligned by phase rotating the signals in accordance with the estimated timing offsets. The time-aligned signals are then coherently combined and detected. The combined signal has a greater signal-to-noise ratio than the individual received signals, permitting detection at a greater range or with a lower bit error rate.

Reducing via stub resonance in printed circuit boards. In one aspect, a method for reducing via stub resonance in a circuit board includes determining that resonance exists for a signal to be transmitted through a signal via extending across a plurality of layers in the circuit board. The resonance is caused by a via stub of the signal via, the via stub extending past a layer connected to the signal via. A location is determined for a ground via to be placed relative to the signal via, the location of the ground via being determined based on reducing the resonance for the signal to be transmitted in the signal via.

Disclosed is a method for in situ detection of one or more target nucleic acids based on a combination of RNAscope® method and a general ISH signal amplification method. This new method produces high signal intensity and while keeps low background noise of signal amplification. The result can be consistently reproduced and the method can be easily adopted for routine clinic diagnostic use. Further, the invention relates to a kit, comprising the components of RNAscope® assay and a general ISH signal amplification assay, for sensitive detection of one or more target nucleic acids.

This invention relates to cells and devices for harvesting light. Specifically the cell comprises at least one electrode which comprises graphene or modified graphene and layer of a transition metal dichalcogenide in a vertical heterostructure. The cell may be part of a light harvesting device. The invention also relates to materials and methods for making such cells and devices.

The present disclosure relates to providing a method of improving data rates in a heterogeneous network which is composed of macro cells and pico cells. User equipment is connected to the network via a macro base station serving a macro cell or a low power node serving a pico cell. A signal strength indicator is received from one or more UEs located in a macro cell and adjacent one or more pico cell. The location of a UE within a region of a macro cell or a pico cell is identified according to the signal strength indicator. Then, a weak coverage area of macro cell is identified according to the signal strength indicator and a beam forming antenna of a macro base station serving the macro cell where the UE is located, is directed to steer the antenna beam to an area of the cell requiring an improved signal strength indicator.