Disclosed is a wireless surround sound speaker system wherein a transmitter broadcasts a variety of FM signals that correspond to the individual speaker channels commonly found in a surround sound system. Receivers, individually equipped with signal receiving, conditioning and amplification components, are configured to receive any one of the broadcast signals in a remote location and are used to drive a conventional loudspeaker in that location. Powered by wall socket or via DC battery packs, the receivers, used in conjunction with the transmitter, provide surround sound capabilities without the need for complex and difficult wiring.

A wireless small motor driver, in which power consumption is decreased by adjusting a gear ratio, the efficiency of an operation is increased due to a high torque, and the safety of a worker at night is ensured using an illumination lamp. The wireless small motor driver includes a driver case inside of which a motor is provided. A driver bit has a predetermined length in a bilateral direction, the driver bit being replaceable, with one or both ends thereof conforming to the shape of a bolt, and has a fixing projection. A socket is coupled to an end portion of the driver case, the driver bit being fastened to the socket. A rotation reduction gear is coupled to the motor, the rotation reduction gear transmitting rotary force to the socket and increasing a torque. A USB and a battery for supplying uniform power to the motor are added.

A device for stripping coating from electric wires is provided with a function to detect any contact between a wire core and stripping blades even for electric wires which have been cut short. This device has a signal analyzer circuit for measurement of impedance via stripping blades capable of detecting any contact between the stripping blades and the wire core by detecting a change in impedance as a result of addition of impedance of the wire core to that of the stripping blades at the moment of any contact of the stripping blades with the core of the electric wire in the course of stripping coating from the electric wire.

Wireless strain and displacement sensors wirelessly monitor structural health and integrity, and are made by printing inductor-interdigital capacitor sensing circuits on a variety of substrates, including ceramic substrates, with thermally processable conductive inks. Sensors of the invention can be employed to detect strain and displacement of civil structures, such as bridges and buildings. The sensors include sensing elements that are mounted or printed on stiff, inflexible substrates, which prevent the sensing elements from bending, stretching, or otherwise warping when the sensor is strained. An interlayer between the sensing elements allows the sensing elements to move with respect to each other during application of strain. Thus, strain causes the sensing elements to move but not to deform, causing changes in sensor resonance that can be detected through wireless radio-frequency interrogation. Because the sensing elements do not change shape when under strain, the sensor can undergo millions of measurement cycles before breaking.

Various embodiments of the invention may be used to verify that a person being authorized by biometric techniques to use a device is a living person and not some form of recording intended to spoof the system. Some embodiments may try to cause a change in a measured biometric feature, and compare images taken before and after the change to verify the change occurred. In some embodiments, multiple stages of verification may be used, either to increase the difficulty of spoofing the security system, or to provide different levels of security for different levels of access to the device's functionality.

A method for forming a piece of a sheet metal is performed by positioning a consumable body, made of metal, proximate to the piece of the sheet metal. The consumable body is rapidly vaporized, and the gas pressure generated thereby is directed into the piece of the sheet metal. This results in acceleration of the piece of sheet metal, and it is collided into a stationary body at a velocity, generally in excess of 200 m/s. Depending upon the type of stationary body, the piece of sheet metal is deformed into a predetermined shape or is welded onto the stationary body. The vaporization is accomplished by passing a high current of electricity into the consumable body. The effect of the vaporized metal may be augmented by additional components in the consumable body.

The invention relates to a method for the production of a strand (11) of several wires (12), consisting of an electrically conductive material, which are hard drawn to a final diameter in at least a single or multiblock wire-drawing machine (19, 28) or drawing apparatus in a last drawing step before the stranding, so that in each case the wire or wires (12) have a tensile strength of at least 300N/mm2, and that subsequently the hard drawn wires (12) or a mixture of hard drawn wires (12) and soft-annealed wires are stranded into a strand (11) in a stranding machine (21), without a subsequent annealing process, as well as a strand which is produced according to the present method.

A safety system for a wireless snowplow controller makes the wireless controller safer and more effective. The system includes a vehicle, a snowplow, a wireless controller and a tether. The controller wirelessly sends one or more control signs to one or more control modules coupled to the vehicle and/or the snowplow. The control signals may be used to control operation of the snowplow. The controller may be configured such that it is only able to send control signals when it is connected, via the tether, to a power supply coupled to the vehicle.

A wireless charging device comprises an electronic switch and a transmitting coil (L1) electrically connected with a power source in sequence. A control end of the electronic switch is connected with a transmitting control unit. The wireless charging device further comprises a current limiting resistance (R1) connected in serial with the transmitting coil. The wireless charging device further comprises a compensation capacitor (C1) connected in parallel with the transmitting coil. An insert total electromagnetic coupling structure is further employed for charging. Such wireless charging device is particularly suitable for electronic cigarette, with low cost, stable and reliable working status and high efficiency, and specific heat sink is not required.

An apparatus for assigning a plurality of access nodes of a wireless communication network to control areas includes a processing apparatus. The processing apparatus is configured to assign each access node in the plurality of access nodes to a control area of a plurality of control areas and to determine a first control phase. The first control phase is a period of time during which the assignment of access nodes to control areas remains constant. The processing apparatus is configured to, when changing from the first control phase to a following second control phase, reassign at least a subset of access nodes which were assigned during the first control phase to a first control area to a second control area and reassign at least a subset of access nodes which were assigned during the first control phase to a third control area to the first control area.

A method for transmitting uplink (UL) data requiring low latency in a wireless communication system according to the present invention, the method performed by a user equipment comprises transmitting contention PUSCH resource block (CPRB) indication information used for identifying a particular UE and/or particular data to an eNB; transmitting UL data to the eNB through CPRB resources of a contention based PUSCH (CP) zone; and receiving a hybrid automatic retransmit request (HARQ) response with respect to the UL data from the eNB through a physical hybrid ARQ indicator channel (PHICH).

Disclosed are a method for transmitting and receiving a frame in a wireless local area network (WLAN) system and an apparatus for the same. A method for generating interference/non-interference station lists includes receiving a first frame from a second station, acquiring a receiver address of the first frame from the first frame, and setting, based on whether to receive a second frame that is a response to the first frame from a third station indicated by the receiver address within a preset time from a time when the first frame has been received, the third station as an interference station or a non-interference station. Therefore, the performance of a communication system may be improved.

A system, apparatus and method is disclosed for multiband wireless communication. Frequency bands and/or transmission formats are identified as available within a range for wireless communication. The system evaluates signal quality metrics for each frequency band and selects a communication method based on the evaluation. Multiple frequency bands and communication methods can be utilized by the system such that a combination of licensed, unlicensed, semilicensed, and overlapped frequency bands can be simultaneously used for communication. The system monitors communications and can report link performance for adaptive control of the selected communication methods.

In one embodiment, a server of a first wireless communication network receives a wireless communication originated by a terminal of the first wireless communication network, the wireless communication containing a current geographic location of the terminal as determined by the terminal. The server may then determine acceptable communication parameters for the terminal to communicate on the first wireless communication network, e.g., based on preventing transmission by the terminal that might interfere with operation of one or more unintended receivers. The server then generates an instruction message for the terminal based on the acceptable communication parameters, and transmits the instruction message toward the terminal to cause the terminal to only continue transmitting according to acceptable communication parameters.

The present invention relates to a wireless communication system, and a method for determining a resource for device-to-device communication by a user equipment is disclosed. A method for determining a resource for device-to-device communication according to an embodiment of the present invention may comprise the steps of: receiving, from an eNode B (eNB), configuration information related to a resource pool configured for each level; selecting the resource pool of the device-to-device communication on the basis of the configuration information; and selecting a resource for the device-to-device communication in the resource pool. Herein, the resource pool may be configured to have two or more levels.

In one embodiment, a device of a first wireless communication network determines a link budget from a terminal in the first communication network to an unintended receiver for a communication from the terminal to an intended receiver in the first wireless communication network, based on the communication being configured with initial communication parameters. The device also determines whether one or more adjusted communication parameters would result in reducing a received power at the unintended receiver being below a link budget threshold, while still satisfying a receive sensitivity of the intended receiver. If so, the device causes the terminal to transmit the communication using the adjusted communication parameters. In one embodiment, the device is the terminal, and causing comprises transmitting as the terminal. In another embodiment, the device is a server of the first communication network, and causing comprises instructing the terminal to transmit the communication using the adjusted communication parameters.

A method and a radio network node for scheduling wireless devices. The node assigns, to each wireless device, a D2D pair out of the D2D pairs based on spatial compatibilities for each of the D2D pairs with respect to each wireless device. The node estimates, for each wireless device and the assigned D2D pair, a first respective throughput for cellular communication and D2D communication, and estimates, for each wireless device, a second respective throughput for only cellular communication. The node schedules one or more of the wireless devices of the cellular network based on the first and second respective throughputs. Each of the wireless devices is scheduled for cellular communication together with the D2D communication of the assigned D2D pair when the first respective throughput exceeds the second respective throughput, or for only cellular communication when the first respective throughput is below the second respective throughput.

Embodiments of the present invention disclose a wireless access point, including: a first radio frequency module, a second radio frequency module, and a processor. A frequency band of the first radio frequency module is the same as that of the second radio frequency module; the first radio frequency module and the second radio frequency module work on different channels; a first transmit power upper limit of the first radio frequency module is greater than a second transmit power upper limit of the second radio frequency module; and the processor is configured to schedule a terminal whose signal strength is greater than a threshold to associate with the wireless access point by using the second radio frequency module. The complexity of hardware design for integrating two radio frequency modules of a same frequency band into one AP may be reduced.

A method, in a network node, for managing a wireless device is disclosed. The method comprises conducting spectrum opportunity detection within a spectrum band and indicating a result of the spectrum opportunity detection to the wireless device. For the purposes of the method, a spectrum opportunity comprises a channel within the spectrum band which is at least temporarily available for use by the wireless device. Also disclosed is a method in a wireless device in a network. The method comprises detecting an indication of a result of spectrum opportunity detection conducted by a network node within a spectrum band and if the indication indicates a detected spectrum opportunity, conducting one of a transmission or reception operation on the detected spectrum opportunity. Also disclosed are a computer program product for carrying out the above methods, a network node and a wireless device.

According to one embodiment, a wireless communication device includes: a receiver that configured to receives a first frame; and a transmitter that configured to transmits a second frame including a first identifier and acknowledgement information on the first frame, the first identifier being extracted from a predetermined field of the first frame and being different from a source address of the first frame.

A method includes: monitoring a plurality of wireless working frequency bands supported by a smart terminal; when a Peer to Peer (P2P) data packet is received at any of the wireless working frequency bands, analyzing the P2P data packet and obtaining device information of a smart device; and establishing a wireless connection with the smart device at the wireless working frequency band according to the device information.

Provided are a device-to-device (D2D) operation method carried out by a terminal in an RRC connection state in a wireless communication system, and a terminal using the method. The method is characterized by: determining whether a radio resource control (RRC) connection establishment process is problematic; and transmitting a D2D signal using an exception resource, when the RRC connection establishment process is determined to be problematic.

Provided are a device-to-device (D2D) operation method carried out by a terminal in an RRC connection state in a wireless communication system, and a terminal using the method. The method is characterized by: determining whether a communication link with a base station is problematic; and transmitting a D2D signal using an exception resource, when the communication link with the base station is determined to be problematic.

Provided is a network self-healing method in which, when a link between a parent device and a child device breaks down in a wireless communication network of a cluster-tree structure in which a main communication device (referred to an access point (AP)) manages network operation, routers that are devices capable of having their child devices, and end devices that are devices incapable of having their child devices are associated with each other in a parent-child device relationship, the link is restored. When a router becomes an orphan device, the router makes network re-association in a cluster unit while maintaining synchronized operation with its child devices, and thus time, energy and signaling burden for network self-healing is largely reduced.

An archwire for use with a passive self-ligation orthodontic bracket is described and which includes a resilient main body which is received in the archwire slot, and which further has a predetermined width dimension, and a variable thickness dimension, and wherein the variable thickness dimension of the archwire can be varied so as to facilitate an adjustable application of a force to the passive self-ligation orthodontic bracket so as to achieve a clinician selectable and controllable second and third order movement of a patient's tooth.

Techniques and methods for utilizing ion implantation to modify dental archwires are provided. An example of a method of ion implanting a wire target includes providing the wire target in an ion implant system, implanting ions into the wire target such that a color of the wire target material after the implanting exhibits a changed appearance from the color of the wire target material before the implanting, and removing the wire target from the ion implant system. An example of a copper-aluminum-nickel (CuAlNi) wire includes an ion implanted atomic species wherein a color of an implanted CuAlNi wire is white, off-white and/or silver and further wherein the implanted CuAlNi wire exhibits mechanical properties of an unimplanted CuAlNi wire.

The invention relates to a self-contained and wireless monitoring device (10) for use in a washing machine (1) to indicate shortage of detergent in said washing machine. The monitoring device comprises a sensor (13) arranged to monitor detergent concentration in washing liquid (5) of said washing machine and to provide an alarm signal (A) when said monitored detergent concentration is below a target value. The monitoring device is capable of floating in said washing liquid and comprises signalling means (11) for indicating said shortage of detergent in response to said alarm signal. The invention further relates to a package containing such a monitoring device and a method for indicating shortage of detergent.

A system includes a voltage-controlled oscillator (VCO) to generate an output signal based on an input voltage and a multi-stage delay network to receive the output signal from the VCO. Each stage of the delay network produces a phase-shifted output signal. The system includes a multi-stage digital-to-analog converter (DAC) network, where each stage of the DAC network is associated with a corresponding stage of the delay network. Each stage of the DAC network receives the phase-shifted output signal from its corresponding stage of the delay network and generates a weighted output signal based on the received phase-shifted output signal. The DAC network combines the weighted output signal of each stage. A weighting factor for each stage of the DAC network is selected to reduce harmonic content of the combination of weighted output signals.

A wire profile comprises a rib portion and a plurality of teeth over the length of the rib portion. The teeth are sloped with a back slope representing the backbone of the teeth and a front slope representing the side in direct contact with fiber. The back slope has a tangent forming a hack angle with the rib portion, and the front slope is divided into at least two segments, a tip segment converging with the back slope to form a tip of the teeth and serving to penetrate between fibers, and an undercut segment to retain the fibers. The undercut segment has a tangent forming an undercut angle with the rib portion, and the undercut angle is at each point in the undercut segment greater than the maximum of the hack angle and smaller than the smallest value of the tip angle.

A wire profile having a rib portion and plurality of teeth over the length of said rib portion, wherein said plurality of teeth is inclined at an angle with respect to the said rib portion, wherein said teeth has a front portion and a back portion, wherein said front portion is the inner portion of the said teeth leaning towards the rib portion and said back portion is the outer portion of the said teeth, and wherein at least one teeth with said back portion comprises at least one nose cut segment.

A wireless access control system may include a remote access wireless communications device and a lock assembly to be mounted on a door. The lock assembly may include a lock, a door position sensor, interior and exterior directional antennas, lock wireless communications circuitry, a touch sensor, and a lock controller. The lock controller may be configured to unlock the lock based upon the touch sensor, determine when the door is closed after being opened based upon the door position sensor, determine whether the remote access wireless device is in an interior or an exterior based upon the directional antennas, switch the lock to the locked position when the door is closed and when the remote access wireless device is in the interior, and not switch the lock to the locked position when the door is closed and when the remote access wireless device is in the exterior.

A wireless access control system may include a remote access wireless communications device and a lock assembly to be mounted on a door. The lock assembly may include a lock, a door position sensor, interior and exterior directional antennas, lock wireless communications circuitry, and a lock controller. The lock controller determine whether the lock is manually unlocked, determine when the door is closed after being opened based upon the door position sensor, and determine whether the remote access wireless device is in an interior or an exterior based upon the directional antennas. The lock controller may also switch the lock to the locked position when the door is closed and when the remote access wireless device is in the exterior, and not switch the lock to the locked position when the door is closed and when the remote access wireless device is in the interior.

A patient care system and a corresponding method that provide patient monitoring. The system includes a server, at least one patient communication device, and at least one caregiver communication device. The communication devices send receiving signals and notifications wirelessly to/from the server, and may be adapted to be worn on a user's wrist. Notifications can be sent to the caregiver communication device to notify the user to provide care to a patient in response to a patient request for assistance based on defined conditions, which may be proximity based. The server may track all received and sent notifications and may provide analytics of this information to improve quality of healthcare in a facility.

An adaptive algorithm based battery-powered long distance wireless temperature and humidity sensor module. The sensor module uses an adaptive algorithm to transmit data on an event basis and/or a reduced basis to extend battery life to more than 10 years. It also uses a low power wireless transmitter which has frequency of sub-1 GHz and an effective transfer distance of up to 250 meters, a low power temperature and humidity sensor, and a long lasting lithium battery which has shelf life of 20 years.

A semiconductor device is provided that includes an n-type field effect transistor including a plurality of vertically stacked silicon-containing nanowires located in one region of a semiconductor substrate, and a p-type field effect transistor including a plurality of vertically stacked silicon germanium alloy nanowires located in another region of a semiconductor substrate. Each vertically stacked silicon-containing nanowire of the n-type field effect transistor has a different shape than the shape of each vertically stacked silicon germanium alloy nanowire of the p-type field effect transistor.

A wire gripping assembly for securing an electrical box or light fixture to a support. The wire gripping assembly includes a wire gripping device having a body with open channels and a through bore, a clip member having legs for sliding engagement within the channels, a cable having an end connector thereon, and a thumbscrew for adjusting the clip member with respect to the body. The thumbscrew includes a head having an outer circumference with serrations to enable hand tightening and an end with a slot for engagement by a screwdriver or similar tool. The wire gripping assembly eases installation of an electrical device to an overhead support by enabling a two-step connection including initial hand tightening using the serrated outer surface of the thumbscrew and subsequent secure tightening by engaging the slot of the thumbscrew with a screwdriver or similar tool.

A binding screw for a wire connection assembly comprises a driving section, a threaded section, and a contact section. The contact section has a tapered penetration portion establishing electrical contact with a stranded wire. A length of the penetration portion is at least three-quarters of a diameter of the binding screw in the threaded section.

Methods and apparatus are described. A method, implemented in a decoder, includes receiving two or more signals from an encoder over two or more respective wires. At least one of the two or more signals includes at least one code that was recoded by the encoder. The decoder receives a recoding table. The recoding table provides a mapping indicating the recoding for each code that was recoded by the encoder in the received two or more signals. The decoder decodes the two or more received signals using the received recoding table.

A remote control for a wireless load control system, the remote control comprising: a housing having a front surface and an outer periphery defined by a length and a width; an actuator provided at the front surface of the housing; a wireless transmitter contained within the housing; and a controller contained within the housing and coupled to the wireless transmitter for causing transmission of a wireless signal in response to an actuation of the actuator, the wireless transmitter and the controller adapted to be powered by a battery contained within the housing; wherein the length and the width of the housing are slightly smaller than a length and a width of a standard opening of a faceplate, respectively, such that the outer periphery of the housing is adapted to be received within the standard opening of the faceplate when the housing and the faceplate are mounted to a vertical surface.

Aspects of the subject disclosure may include, for example, an antenna structure having a feed point for coupling to a dielectric core of a cable that propagates electromagnetic waves without an electrical return path, and a dielectric antenna, substantially or entirely devoid of conductive external surfaces, coupled to the feed point, the dielectric antenna facilitating receipt, at the feed point, the electromagnetic waves for propagating the electromagnetic waves to an aperture of the dielectric antenna for radiating a wireless signal. Other embodiments are disclosed.

An antenna having a passive antenna element that is integrated in a wireless communication chassis, is naturally in resonance, and is galvanically coupled to ground, and a passive indirect antenna element feed that is non-galvanically coupled to the antenna element. If the chassis is foldable, a parasitic element may be located opposite an antenna element feed when the foldable chassis is in at least one of a closed mode and a tablet mode.

A transmission apparatus includes a first metal plate including a first surface, a second surface opposite to the first surface, and a first through hole penetrating from the first surface to the second surface, the first metal plate; a first board being disposed on the first surface side of the first metal plate, the first board including a first patch antenna positioned inside the first through hole; and a second board being disposed on the second surface side of the first metal plate, the second board including a second patch antenna positioned inside the first through hole and opposed to the first patch antenna, wherein an interval between the first patch antenna and the second patch antenna is set in accordance with a distance for wireless communicating between the first patch antenna and the second patch antenna in a near field.

A waveguide device includes a first electrically conductive member having a first electrically conductive surface; a second electrically conductive member having a second electrically conductive surface which opposes the first electrically conductive surface; and a ridge-shaped waveguide member on the second electrically conductive member. The second electrically conductive member has a throughhole which splits the waveguide member into first and second ridges. The first and second ridges each have an electrically conductive end face, the end faces opposing each other via the throughhole. The opposing end faces and the throughhole together define a hollow waveguide. The hollow waveguide is connected to a first waveguide extending between the waveguide face of the first ridge and the first electrically conductive surface, and to a second waveguide extending between the waveguide face of the second ridge and the second electrically conductive surface.

A slot array antenna includes: a first conductive member having a first conductive surface and a plurality of slots therein, the slots being arrayed in a first direction and in a second direction which intersects the first direction; a second conductive member having a second conductive surface which opposes the first conductive surface; a plurality of waveguide members arrayed between the first and second conductive members along a direction which intersects the first direction, each waveguide member having an conductive waveguide face which extends along the first direction so as to oppose at least one of the slots; and an artificial magnetic conductor in a subregion which is within a region between the first and second conductive members but outside of a subregion containing the waveguide members. Neither an electric wall nor an artificial magnetic conductor exists in a space between two adjacent waveguide faces among the waveguide members.

A catheter includes a catheter body having a proximal end, a beveled distal end, and a lumen therethrough. The beveled distal end defines an elliptical port for releasing contrast or other media through the lumen and from the elliptical port. The catheter may also be used delivering devices or for aspirating or extracting materials from the vasculature or other body lumens. A fixed guidewire extends distally from the distal end of the catheter body, typically from the distal-most edge of the elliptical port. The fixed wire is typically malleable so that it can be manually formed into a desired shape. The elliptical port may be flat or concave.

Superconducting nanowire avalanche photodetectors (SNAPs) have using meandering nanowires to detect incident photons. When a superconducting nanowire absorbs a photon, it switches from a superconducting state to a resistive state, producing a change in voltage that can be measured across the nanowire. A SNAP may include multiple nanowires in order to increase the fill factor of the SNAP's active area and the SNAP's detection efficiency. But using multiple meandering nanowires to achieve high fill-factor in SNAPs can lead to current crowding at bends in the nanowires. This current crowding degrades SNAP performance by decreasing the switching current, which the current at which the nanowire transitions from a superconducting state to a resistive state. Fortunately, staggering the bends in the nanowires reduces current crowding, increasing the nanowire switching current, which in turn increases the SNAP dynamic range.

An electrical energy receiving end capable of overvoltage protection and a wireless electrical energy transmission device are provided. An electrical energy receiving coil is divided into a first receiving coil and a second receiving coil, so that under normal operation the first receiving coil and the second receiving coil jointly resonate with an impedance matching network to receive energy. When the electrical energy receiving end has an overvoltage, the first receiving coil and the impedance matching network (or the second receiving coil and the impedance matching network) form a loop, and due to the impedance mismatch, the energy received by the electrical energy receiving end is greatly reduced to solve the problem of overvoltage at the electrical energy receiving end.

Putting the AirTurn BT-200S-4 bluetooth foot controller to the test for hands-free DAW control.

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