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9119 results about "Signal" patented technology

In signal processing, a signal is a function that conveys information about a phenomenon. In electronics and telecommunications, it refers to any time varying voltage, current or electromagnetic wave that carries information. A signal may also be defined as an observable change in a quantity.

Method and apparatus for directional measurement of subsurface electrical properties

A directional induction logging tool is provided for measurement while drilling. This tool is preferably placed in a side pocket of a drill collar, and it comprises transmitter and receiver coils and an electromagnetic reflector. The reflector, which may be a layer of highly conductive material placed between the coils and the body of the drill collar, serves to focus the electromagnetic fields generated and sensed by the tool in the direction away from the reflector, thus providing a directional response to formation conductivity with a relatively high depth of investigation. In preferred embodiments of the invention, magnetically permeable cores are placed within the coils to concentrate the magnetic fields that pass through them. Circuitry is described for balancing the mutual inductive coupling of the coils by injecting a direct current signal through one or more of the coils, which alters the magnetic permeability of the core material. The magnitude of the direct current required to achieve a balanced condition may be derived from the quadrature phase component of the return signal. Circuitry is also provided for generating a transmitted signal and for processing the return signals, including digital-to-analog conversion circuitry for providing digital data for transmission to the surface. This tool may be employed to provide real-time directional conductivity information that may be used to detect and follow bed boundaries in geosteering operations.
Owner:SINCLAIR PAUL L

Monitoring physiological condition and detecting abnormalities

A system for monitoring an individual's physiological condition and detecting abnormalities therein, comprising concurrently receiving at least a first signal and a second signal. The first and second signals are conditioned to minimize background extraneous noise after which, each signal is concurrently processed and analyzed to detect repeating cyclical patterns and further characterized to identify individual components of the repeating cycles. At least one individual component in one signal is selected as a reference marker for a selected component in the other signal. The two signals are then synchronized, outputs produced therefrom and stored in a database. The system is provided with a plurality of devices for acquiring, transmitting and conditioning at least two physiological signals, a software program cooperable with a microprocessor configured for receiving said transmitted signals and conditioned signals, and processing said signals to characterize and synchronize said signals and provide signal outputs derived therefrom, a database for storing said transmitted signals, conditioned signals, synchronized signals, and output signals derived therefrom. The output signals are useful for reporting and optionally for retransmission to the individual's body and providing physiologically stimulatory signals thereto.
Owner:HEART FORCE MEDICAL

System, method and computer-readable medium for estimating direction of arrival of a signal incident on at least one antenna array

ActiveUS20160103199A1Simple and accurate procedureDirection findersAntennasSystems approachesAntenna array
Exemplary embodiments include a computer-implemented method for configuring at least one antenna array comprising receiving a plurality of samples corresponding to signals incident on a plurality of antennas; using a computer arrangement, computing one or more data related to an envelope of the samples and estimating a direction of arrival of the signals incident on the antennas based on the one or more computed data; and configuring the at least one antenna array based on the estimated direction of arrival. The computing and estimating procedures can be performed for each of a plurality of direction-of-arrival candidates. The one or more data can be statistics corresponding to multipath shape factor parameters. The spatial selectivity of the at least one antenna array can be configured based on the estimated direction of arrival. Other exemplary embodiments include apparatus and computer-readable media embodying one or more of the exemplary computer-implemented methods and / or procedures.
Owner:NEW YORK UNIVERSITY

Ambiguity estimation of GNSS signals for three or more carriers

Methods and apparatus are provided for factorized processing of a set of GNSS signal data derived from signals having at least three carriers. A geometry filter is applied to the set of GNSS signal data using a geometry carrier-phase combination to obtain an array of ambiguity estimates for the geometry carrier-phase combination and associated statistical information. A bank of ionosphere filters is applied to the set of GNSS signal data using a geometry-free ionosphere carrier-phase combination to obtain an array of ambiguity estimates for the ionosphere carrier-phase combination and associated statistical information. At least one bank of Quintessence filters is applied to the set of GNSS signal data using a geometry-free and ionosphere-free carrier-phase combination to obtain an array of ambiguity estimates for the geometry-free and ionosphere-free carrier-phase combination and associated statistical information. At least one code filter is applied to the set of GNSS signal data using a plurality of geometry-free and ionosphere-free code-carrier combinations to obtain an array of ambiguity estimates for the code-carrier combinations and associated statistical information. The resulting arrays are combined to obtain a combined array of ambiguity estimates for all carrier phase observations and associated statistical information.
Owner:TRIMBLE NAVIGATION LTD

High sensitivity, high resolution detection of signals

A system and method providing for the detection of an input signal by distributing the input signal into independent signal components that are independently amplified. Detection of an input signal comprises generating from the input signal a plurality of spatially separate elementary charge components, each having a respective known number of elementary charges, the number of the plurality of spatially separate elementary charge components being a known monotonic function of the magnitude of said input signal; and independently amplifying each of the plurality of spatially divided elementary charge components to provide a respective plurality of signal charge packets, each signal charge packet having a second number of elementary charges greater than the respective known number by a respective amplification factor.
Owner:AMPLIFICATION TECH INC

Simulation model using object-oriented programming

InactiveUS6053947AIncrease execution speedEfficiency and flexibilityAnalogue computers for electric apparatusCAD circuit designComputer basedPriority scheduling
A method, apparatus and system for simulating the operation of a circuit using a computer-based simulator comprising: (a) distributing at least one signal upon to one or more simulation model subcircuit functions, which use the signal, upon a change in the signal; (b) scheduling one or more subcircuit functions that use the signal for execution according to a priority assigned to each subcircuit function; and (c) providing an output value to the simulator when no subcircuit functions are scheduled, otherwise, executing one or more subcircuit functions with the highest priority and returning to step (a) to repeat the process.
Owner:BELL SEMICON LLC

Ambiguity estimation of GNSS signals for three or more carriers

Methods and apparatus are provided for factorized processing of a set of GNSS signal data derived from signals having at least three carriers. A geometry filter is applied to the set of GNSS signal data using a geometry carrier-phase combination to obtain an array of ambiguity estimates for the geometry carrier-phase combination and associated statistical information. A bank of ionosphere filters is applied to the set of GNSS signal data using a geometry-free ionosphere carrier-phase combination to obtain an array of ambiguity estimates for the ionosphere carrier-phase combination and associated statistical information. At least one bank of Quintessence filters is applied to the set of GNSS signal data using a geometry-free and ionosphere-free carrier-phase combination to obtain an array of ambiguity estimates for the geometry-free and ionosphere-free carrier-phase combination and associated statistical information. At least one code filter is applied to the set of GNSS signal data using a plurality of geometry-free and ionosphere-free code-carrier combinations to obtain an array of ambiguity estimates for the code-carrier combinations and associated statistical information. The resulting arrays are combined to obtain a combined array of ambiguity estimates for all carrier phase observations and associated statistical information.
Owner:TRIMBLE NAVIGATION LTD

Methods and systems for encoding and protecting data using digital signature and watermarking techniques

Systems and methods are provided for protecting and managing electronic data signals that are registered in accordance with a predefined encoding scheme, while allowing access to unregistered data signals. In one embodiment a relatively hard-to-remove, easy-to-detect, strong watermark is inserted in a data signal. The data signal is divided into a sequence of blocks, and a digital signature for each block is embedded in the signal via a watermark. The data signal is then stored and distributed on, e.g., a compact disc, a DVD, or the like. When a user attempts to access or use a portion of the data signal, the signal is checked for the presence of a watermark containing the digital signature for the desired portion of the signal. If the watermark is found, the digital signature is extracted and used to verify the authenticity of the desired portion of the signal. If the signature-containing watermark is not found, the signal is checked for the presence of the strong watermark. If the strong watermark is found, further use of the signal is inhibited, as the presence of the strong watermark, in combination with the absence or corruption of the signature-containing watermark, provides evidence that the signal has been improperly modified. If, on the other hand, the strong mark is not found, further use of the data signal can be allowed, as the absence of the strong mark indicates that the data signal was never registered with the signature-containing watermark.
Owner:INTERTRUST TECH CORP

Methods and apparatus for transmitting signals through network elements for classification

The present invention provides techniques for transmitting at least one signal through an element of a classification system. One or more input signals are received at the element. One or more functional components are extracted from the one or more input signals, and one or more membership components are extracted from the one or more input signals. An output signal is generated from the element comprising a functional component and a membership component that correspond to one or more functional components and membership components from one or more input signals.
Owner:GOOGLE LLC

Method and device for feeding back channel state information reports

The invention discloses a method and a device for feeding back channel state information reports. The method includes the following steps that: a base station configures parameters of a plurality of groups of channel state information (CSI) reports; and the base station informs UE about the parameters of the plurality of groups of channel state information (CSI) reports and instructs the UE to feed back the channel state information (CSI) reports of a predetermined group. The parameters of each group of channel state information (CSI) reports in the plurality of groups of channel state information (CSI) reports comprise a resource allocation parameter of one or a plurality of channel state information reference signal (CSI-RS) resources which are used for channel measurement. The parameters of each group of channel state information (CSI) reports in the plurality of groups of channel state information (CSI) reports further comprise one of the following parameters: distribution information of one or a plurality of interference measurement resources corresponding to each channel state information reference signal (CSI-RS) resource in one or the plurality of channel state information reference signal (CSI-RS) resources; a parameter which is used for indicating the corresponding relationship between one or the plurality of channel state information reference signal (CSI-RS) resources and the interference measurement resources; a parameter which is used for indicating the corresponding relationship between the channel state information reference signal (CSI-RS) resources and channel state information reference signal (CSI-RS) resources used for interfering calculation; and/or a parameter used for indicating the corresponding relationship between one or a plurality of channel state information reference signal (CSI-RS) resources and component carriers in carrier aggregation.
Owner:ZTE CORP

System and method for enabling an operator to analyze a database of acquired signal pulse characteristics

A pulse management system configured to perform a plurality of pulse measurements on each of a plurality of pulses of an acquired signal and to store results of the pulse measurements in an accessible data structure. The pulse management system includes a pulse analyzer that searches the data structure for pulses of the acquired signal that satisfy operator-provided search criteria. Similarly, the pulse analyzer can sort the selected subset of pulses based on sort criteria provided, for example, by an operator. The pulse analyzer can provide the operator with a user interface environment in which the operator specifies the search and sort criteria and in which the pulse analyzer displays the selected pulses with their associated pulse measurement results. The operator can advance through the selected pulses in any manner desired to display different pulses together or separately. The pulse analyzer thereby provides an operator with the capability to gain insights into a large number of acquired pulses through the selection of individual pulses meeting desired characteristics or relative time of occurrence, through the filtering or selection of pulses meeting specified criteria, and through the arrangement of those pulses according to the same or different criteria.
Owner:AGILENT TECH INC

Transmitter and Controlling Method Thereof

A transmitter is provided by the present application. The transmitter comprises a first element, configured to receive signal with a first frequency group, wherein first impedance value of the first element is changed according to a force, a second element with a second frequency group, and a tip section, configured to receive outputs of the first and the second elements and to transmit an electric signal, wherein the tip section is used to receive the force.
Owner:EGALAX EMPIA TECH INC

Authentication techniques in a monitoring system

An Electronic House Arrest Monitoring (EHAM) system of the present invention includes a transmitter attached to a monitored offender and a receiver positioned in the vicinity of the desired monitoring location. The transmitter and the receiver each have a pattern stored or generated therein for determining the interval of time between signal transmissions and receptions. The pattern is pseudo-random to offer improved protection against imposter transmitters, in other words the time intervals are selected to be unequal and randomly varying but the pattern is repeated or cycled to allow continuing signal transmission by the transmitter. The transmitter transmits signals at varying time intervals according to this pattern, and the receiver authenticates signals it receives as coming from the monitored transmitter based on the expected time intervals from the pattern. The pattern may include any number of time intervals and, in one embodiment, includes more than one subpattern to extend the length of the repeat cycle to increase the difficulty of defeating the monitoring system. As further protection against imposter devices, the receiver may verify the signals based on information unique to the transmitter included in each signal. The receiver may further use the received signals and unique time interval patterns to determine a number of operating states, including New Transmitter ID Received, Transmitter In Range and Locked to Transmitter, Transmitter In Range and Not Locked, Transmitter Out of Range, and Imposter Likely. The monitoring system may also include a remote host computer linked to the receiver or receivers to enable these operating states to be monitored remotely by enforcement personnel.
Owner:BI
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