182results about How to "For signal reception" patented technology

A wearable digital video camera (10) is equipped with wireless connection protocol and global navigation and location positioning system technology to provide remote image acquisition control and viewing. The Bluetooth® packet-based open wireless technology standard protocol (400) is preferred for use in providing control signals or streaming data to the digital video camera and for accessing image content stored on or streaming from the digital video camera. The GPS technology (402) is preferred for use in tracking of the location of the digital video camera as it records image information. A rotating mount (300) with a locking member (330) on the camera housing (22) allows adjustment of the pointing angle of the wearable digital video camera when it is attached to a mounting surface.

A battery powered electronic device (1) comprising a housing (2) and a movable part (3) extending from the housing (2). The movable part (3) is movably attached to the housing (2), such that it can be moved between a compact position and an extended position. The electronic device comprises a switch, which is adapted to sense, whether the movable part (3) is in the compact position or not, and the switch is utilised to switch the electronic device (1) On, when the movable part (3) is in the extended position, and Off, when the movable part (3) is in the compact position. The electronics of the device (1) is adapted to be set to off or into a low-power shipping mode, all though the movable part (3) is in the extended position.

A Multi-User Detection device and method for DS-CDMA to allow enhanced signal reception under Multi-User Interference (MUI) at either the Remote Station or the Base Station is disclosed. The method includes the steps of relaying current channelization code use at Base Stations to Remote Stations operating in the vicinity of the Base Stations. This information is used by an MUD device at the Remote Station, to improve its ability to separate signals transmitted from different Base Stations. The downlink channelization code information is used to recreate the interference received by all neighboring Base Stations transmissions at the Remote Station. The same method can be applied at the Base Station side. The Uplink Channelization Code Usage information is relayed to each Base Station from its neighboring Base Stations. Recreating the total Remote Station interference at the Base Station allows a multistage interference cancellation based MUD to enhance its capability of receiving Remote Stations in its coverage area.

An ultra wide bandwidth, high speed, spread spectrum communications system uses short wavelets of electromagnetic energy to transmit information through objects such as walls or earth. The communication system uses baseband codes formed from time shifted and inverted wavelets to encode data on a RF signal. Typical wavelet pulse durations are on the order of 100 to 1000 picoseconds with a bandwidth of approximately 8 GHz to 1 GHz, respectively. The combination of short duration wavelets and encoding techniques are used to spread the signal energy over a an ultra wide frequency band such that the energy is not concentrated in any particular narrow band (e.g. VHF: 30-300 MHz or UHF: 300-1000 MHz) and is not detected by conventional narrow band receivers so it does not interfere with those communication systems. The use of pulse codes composed of time shifted and inverted wavelets gives the system according to the present invention has a spatial resolution on the order of 1 foot which is sufficient to minimize the negative effects of multipath interference and permit time domain rake processing.

A navigation system includes an in-vehicle portion and a removable navigational unit, where the removable navigation unit is a portable device with navigation capability on its own. The removable navigation unit is capable of being connected to the in-vehicle portion through an navigation interface to perform the navigation function in combination with the in-vehicle portion. The removable navigation unit seamlessly integrates with the in-vehicle portion of the vehicle to provide portability of navigation function when used independently from the in-vehicle portion, and taking advantage of the components of in-vehicle portion when used in conjunction with the in-vehicle portion.

A navigation system includes an in-vehicle portion and a removable navigational unit, where the removable navigation unit is a portable device with navigation capability on its own. The removable navigation unit is capable of being connected to the in-vehicle portion through an navigation interface to perform the navigation function in combination with the in-vehicle portion. The removable navigation unit seamlessly integrates with the in-vehicle portion of the vehicle to provide portability of navigation function when used independently from the in-vehicle portion, and taking advantage of the components of in-vehicle portion when used in conjunction with the in-vehicle portion.

A plane focus antenna includes a plurality of stacking substrates. Each substrate has one side formed a periodic array plane consisting of a plurality of resonant coils and other side laid a metal wire formed in a periodic structure. The magnetic permeability of the stacking double split-ring resonators is negative and the electric permittivity of the metal wire is negative at the same time that can interact with electromagnetic waves to fabricate a negative refractive index material (NRIM) to form the plane focus antenna. By means of the special refractive effect of the NRIM receiving signals can be converged in a very small area to enhance the receiving signals. The plane antenna also does not generate distortion.

A fast data transfer collection system using message authentication and contactless RF proximity card technology in non-contact storage and retrieval applications. The system is generally comprised of Host computers (application computer systems), Target radio frequency (RF) terminals, and a plurality of portable Tags ("smart" or "proximity" cards). A Host provides specific application functionality to a Tag holder, with a high degree of protection from fraudulent use. A Target provides control of the RF antenna and resolves collisions between multiple Tags in the RF field. A Tag provides reliable, high speed, and well authenticated secure exchanges of data / information with the Host resulting from the use of a custom ASIC design incorporating unique analog and digital circuits, nonvolatile memory, and state logic. Each Tag engages in a transaction with the Target in which a sequence of message exchanges allow data to be read(written) from(to) the Tag. These exchanges establish the RF communication link, resolve communication collisions with other Tags, authenticate both parties in the transaction, rapidly and robustly relay information through the link, and ensure the integrity and incorruptibility of the transaction. The system architecture provides capabilities to ensure the integrity of the data transferred thus eliminating the major problem of corrupting data on the card and in the system. The architecture and protocol are designed to allow simple and efficient integration of the transaction product system into data / information processing installations.

A multiple integration hypothesis C / A code acquisition system resolves bit boundaries using parallel correlators providing magnitude hypotheses during acquisition to reduce losses over the 20 ms integration period to improve the performance and sensitivity of C / A code receivers to achieve low C / No performance using inexpensive, imprecise oscillators and long noncoherent dwell periods, well suited for in-building, multipath, and foliage attenuated GPS signaling applicable to E911 communications with several dB of additional improvement in receiver sensitivity due to the ability to detect bit synchronization during acquisition.

A package with integral tracking device and method of forming includes a panel having an upper edge, an opposed lower edge and two side edges that form a flexible pouch. A tracking device is disposed within an air pocket formed in a seal. An opening means is integrally formed in the panel for accessing a product contained within the pouch. In another embodiment, the package is a container having a base wall and a side wall extending upwardly from an edge of the base wall. A cover removable encloses the container, and a valve is disposed in the cover for venting a gas from the container. The tracking device is disposed within an enclosed air pocket integrally formed in a base wall or a side wall of the container.

The present invention provides a data processing apparatus and method for generating trace signals. The data processing apparatus comprises a component whose behaviour is to be traced, and a trace generation unit for receiving input signals from the component indicative of the behaviour, and for generating from the input signals high priority and low priority trace signals for outputting to a trace receiving device. The trace generation unit is responsive to assertion of a suppression signal from the trace receiving device to suppress generation of the low priority trace signals, with the aim of avoiding overflow of the trace receiving device. Furthermore, in the event that multiple trace modules are provided within a data processing apparatus, embodiments of the present invention provide funnel logic to enable the trace signals generated by those various trace modules to be combined into a single trace stream having a bandwidth which is less than the collective maximum bandwidth of the individual trace streams generated by the multiple trace modules.

The present invention relates to a hearing instrument which comprises: (a) a housing; (b) an RF receiver; (c) plurality of conductive elements, each conductive element has the form of a plate, is positioned on said housing so it provides coupling with the device wearer's skin while the instrument is in use, thereby forming an antenna element together with the wearer's body; (d) a switch for each conductive element, for connecting or disconnecting the respective antenna element from the receiver; (e) a controller for periodically initiating a testing cycle wherein during said cycle: (e.1) the controller sequentially scans said switches by closing each time another switch, thereby to connect each time a respective antenna element to said receiver; (e.2) each time said antenna switching is performed and a specific antenna element is connected to the receiver, the controller samples and stores a respective quality indication signal which is indicative of the quality of the received signal by said receiver via said respective antenna; (e.3) the controller inspects all said stored indications, determines from all said stored indications the one that relates to a best quality signal, and connects the antenna element which corresponds to said best quality signal to said receiver for a time duration which is substantially longer than the duration of said testing cycle, until performance of a next testing cycle.

In a time-division multiplexing wireless communication system, an antenna module has plural antenna elements. Receiver high-frequency circuit synthesizes signals from the antenna elements according to an antenna directivity having a desired beam pattern. Demodulator selects one of the received signals from wireless terminals according to the synthesized received signals, and determines transmission beam direction information for use in directing the beam in the selected direction. Weighting circuit generates weight coefficients for setting of the beam patterns and transmission beam directions according to the transmission beam direction information, and produces transmission time slots according to a table listing the relations of the transmission beam directions and the time slots for use in the beam radiation in those directions. Down-link fixed beam-forming circuit and modulator control the antenna module using the generated beam pattern, beam direction and transmission time slots to transmit the down-link signal.

A method and apparatus is disclosed for improving signal reception in a wireless communication device by selectively processing one of two or more signals received over two or more antennas that are configured at least partially orthogonal. In one embodiment, the signal source selection is based on comparison of a signal error rate to a threshold value. Error rates in excess of the threshold value may initiate a switching apparatus to selectively enable signal reception from a different antenna to improve the error rate. In one embodiment, amplifiers are located between the switching apparatus and the two or more antennas to thereby reduce noise. In an alternative embodiment control signals selectively enable and disable the amplifiers to control signal reception.

A low-profile antenna system to be mounted to a moving vehicle for receiving signals, such as from a Digital Broadcast Satellite, includes a base for mounting to the surface of the vehicle, a platen mounted to the base for rotation, an azimuth drive motor for rotating the platen, an array of half-cylinder antenna elements mounted to the platen, an elevation drive motor for pivoting the antenna elements individually about their axes to change the elevation at which the antenna elements are pointing, and a cover. The azimuth drive motor and the elevation drive motor together allow the array of antenna elements to be pointed at a satellite over a wide range of vehicle orientations.

A satellite tracking system for tracking a synchronous satellite includes a satellite antenna system movably supported on a roof of a vehicle via a roof frame to move between an operation position and a folded position. At the operation position, the satellite antenna system is rotated on the roof frame to adjust a horizontal orientation of a parabolic reflector of the satellite antenna system while the parabolic reflector is pivotally lift at a predetermined inclination angle to align with the satellite. At the folded position, the parabolic reflector is pivotally dropped down until the parabolic reflector faces downwardly to the roof of the vehicle to conceal a signal transmitting device of the satellite antenna system between the parabolic reflector and the roof of the vehicle. Therefore, the satellite antenna system provides a relatively low profile at the folded position when the vehicle travels.

A method and apparatus is presented for providing improved responsiveness of a receiver device. One embodiment includes a receiver device including an avalanche photodiode (APD), a transimpedance amplifier (TIA), and an automatic gain control (AGC) device configured to adjust the reverse bias voltage applied to the APD according to an approximate DC average of the incoming optical signal. A switch in the AGC device may be used to increase or decrease the time constant of an RC combination determining the DC averaging time period, thereby tailoring the response of the AGC device to characteristics of the incoming data pattern. The resulting receiver exhibits improved responsiveness and sensitivity by adapting to varying data patterns including those with data bursts interspersed with gaps.

An audio and video (AV) flashlight has a head portion, a body portion and a rear portion. Mounted on the head portion is a video camera module incorporating a visible light source and an infrared light source. Mounted on the body portion are a GPS module, an electronic compass module, a display module, a map database module, and a control module to read map information from the map database within a predetermined angle range with reference to an azimuth angle detected through the electronic compass module, display the read information on the display module, and display current location information and current location information of one or more main objects in a forward direction along with linear distance information to the current location. The flashlight enables relative measuring of distance with an eye with respect to a monitoring object based on the linear distance information of the main objects.

A circuit for a radar level gauge for measuring the level of the surface of a product stored in a container, wherein the gauge includes a radar for transmitting microwave signals from a multiband antenna unit towards the surface for receiving microwave signals reflected by the surface and for determining the level based on an evaluation of the time lapsed between the received and the transmitted signals and said radar operating on at least two different frequency bands. The circuit includes: a first microwave provision means for providing a microwave signal of a first frequency band having a first center frequency, a second microwave provision means for providing a microwave signal of a second frequency band having a second center frequency. The ratio between the second and the first center frequency is quantified as at least greater than 1.5:1 and preferably greater than 2:1. Switches are operated by means of a control signal for switching the circuit to operate on said first frequency band or said second frequency band.

Disclosed is a wireless transmitter / receiver provided with: a local oscillator which oscillates at a predetermined local oscillator frequency; a mixer which mixes a local oscillation signal of the local oscillation frequency outputted from an output terminal of the local oscillator and a radio signal received by an antenna; a modulation circuit which modulates the local oscillator signal and generates a radio signal; and a transmission / reception switching unit which selectively switches over between a reception state in which the output terminal of the local oscillator is connected to the mixer and a transmission state in which the output terminal is connected to the antenna without passing through the mixer.

A device for receiving and re-radiating electromagnetic signals. The device includes at least a waveguide with a first set of slot radiators for receiving electromagnetic signals, and a second set of slot radiators for transmitting electromagnetic signals generated on the basis of the received electromagnetic signals in the waveguide. The first set of slot radiators includes one or more slot radiators, and the second set of slot radiators includes one or more slot radiators. The device also relates to a method for receiving and re-radiating electromagnetic signals by a device including at least a waveguide, and the use of the device as a repeater of electromagnetic signals, for transferring electromagnetic signals through a structure, and / or as a building product.

An antenna structure for receiving digital television broadcast signals includes a vase antenna housing having a generally hourglass shape with conically-shaped upper and lower segments joined together to define a narrower diameter middle portion. The antenna structure further includes a signal receiving antenna etched on the inner surface of the vase antenna housing. The signal receiving antenna conforms to the shape of the vase antenna housing and thereby exhibits an arcuate, partial hourglass shape. The signal receiving antenna may be a cloverleaf antenna or a spiral antenna.

The velocity of a wireless communications device (106) is estimated. In response to this estimate, a filter bandwidth, such as a pilot filter (310) bandwidth, is adjusted so that the introduction of noise and distortion to a signal received by the device is mitigated. The filter bandwidth is adjusted by increasing it as the estimated velocity increases; and decreasing it as the estimated velocity decreases. Such adjustments may be accomplished through providing a number of predetermined bandwidths that each correspond to a particular velocity range, and setting the filter bandwidth to the predetermined bandwidth that corresponds to the estimated velocity.

An adjusting method for a smart antenna is provided. The adjusting method divides all possible reading directions of the smart antenna into a plurality of scanning directions and a plurality of idle directions by a first form. In searching for the optimal parameters of each of a plurality of communication channels, the adjusting method firstly adjusts the reading direction according to the plurality of scanning directions, and then adjusts the reading direction according to the plurality of idle directions. Further, the first form remain updated in accordance the process of searching for the optimal parameters of each of the communication channels, thus effectively saving the time spent on the full frequency scanning process. Further, the optimal parameters of each of the communication channels are recorded in a second form, so that the smart antenna is regulated according to the second form.

The present invention provides a data processing apparatus and method for generating trace signals. The data processing apparatus comprises a component whose behaviour is to be traced, and a trace generation unit for receiving input signals from the component indicative of the behaviour, and for generating from the input signals high priority and low priority trace signals for outputting to a trace receiving device. The trace generation unit is responsive to assertion of a suppression signal from the trace receiving device to suppress generation of the low priority trace signals, with the aim of avoiding overflow of the trace receiving device. Furthermore, in the event that multiple trace modules are provided within a data processing apparatus, embodiments of the present invention provide funnel logic to enable the trace signals generated by those various trace modules to be combined into a single trace stream having a bandwidth which is less than the collective maximum bandwidth of the individual trace streams generated by the multiple trace modules.

A license plate frame assembly comprises a license plate frame, a seat member attached to the license plate frame, and a first antenna carried at the seat member in a position facing at an angle from the vertical. Also, multiple antennas may be carried by the license plate frame.