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Battery-less active float for inductive sensor for monitoring fluid level and displacement
A fluid level sensor system includes a primary coil, at least one secondary coil adjacent the primary coil, a control system operative for applying a time varying signal to the primary coil and for detecting a response of the secondary coil to the time varying signal in the primary coil, and...

Kinetic flame device
An apparatus creating a flickering flame effect. The apparatus includes a housing with an interior space with first and second stages. A drive mechanism generates a time varying electromagnetic field extending into the first stage. A first pendulum member is pivotally mounted in the interior space of the first stage and...

Kinetic flame device
An apparatus creating a flickering flame effect. The apparatus includes a housing with an interior space with first and second stages. A drive mechanism generates a time varying electromagnetic field extending into the first stage. A first pendulum member is pivotally mounted in the interior space of the first stage and...

Advanced underground homing system, apparatus and method
A boring tool that is moved by a drill string to form an underground bore. A transmitter transmits a time varying dipole field as a homing field from the boring tool. A pitch sensor detects a pitch orientation of the boring tool. A homing receiver is positionable at a target location...

Traffic monitoring based on non-imaging detection
Traffic monitors based on non-imaging radiation detectors are described. A traffic monitor includes a non-imaging radiation detector that senses spatially patterned radiation emanating from objects moving in a traffic pattern. The detector generates a time varying output signal based on the sensed radiation. Signal processing circuitry is used to analyze the...

Method and apparatus to measure differntial phase and frequency modulation distortions for audio equipment
A testing method or apparatus utilizes multiple frequencies applied to a device under test for measuring newly discovered frequency modulation effects. An embodiment may include a lower frequency signal combined with two (or more) higher frequency signals to test a dynamic change in frequency response, gain, and or phase of the...

Combining multiple video streams
Methods, computer-readable media, and systems are provided for combining multiple video streams. One method for combining the multiple video streams includes extracting a sequence of media frames (--) from presenter (-) video and from shared digital rich media (-) video (). The media frame (--) content is analyzed () to determine...

System and method for media stream playback and buffer management
A media stream playback and buffer management system includes: a server; a wireless router being connected with the server through a network cable; at least a media stream receiver being connected to the wireless router through a network cable, including a buffer, and configured to download media stream frames from the...

Apparatus and method for dating a body or body sample
A method and apparatus for dating a dating a body sample, such as blood, includes taking at least one spectroscopic measurement () of the sample at least two predetermined positions in the spectrum having spectral characteristics corresponding to at least two predetermined substances present in the sample that have a time...

Portable rfid reading terminal with visual indication of scan trace
A portable radio-frequency identifier (RFID) reading terminal can comprise a microprocessor, a memory, an RFID reading device, and a display. The portable RFID reading terminal can be configured to display a scan trace provided by a line comprising a plurality of time varying points. Each point can be defined by a...

Filter structure for iterative signal processing
A method is for communicating by tracking time varying channels in a multiple access packet based communication network. Each packet includes a preamble portion including a data symbol, and a data portion including data symbols. The method may include initializing a channel estimate reference from an initial channel estimate based upon...

Adaptive optical system testbed with karhunen-loeve polynomial based method for simulating atmospheric turbulence
A system and method for simulating atmospheric turbulence for testing optical components. A time varying phase screen representing atmospheric turbulence is generated using Karhunen-Loeve polynomials and a splining technique for generating temporal functions of the noise factor for each Zernike mode. The phase screen is input to a liquid crystal spatial...

Systems and methods for spatio-temporal analysis
High resolution time sequences of 3D images that show the dynamics of a time varying changes are provided. The 3D time series of images representing an object that include time varying changes may be produced from lower dimensional image time sequences, such as 2D images. The 2D images may be generated...

Deriving arterial pulse transit time from a source video image
What is disclosed is a system and method for determining an arterial pulse transit time of a subject of interest in a remote sensing environment. A video imaging system is used to capture a time varying source images of a proximal and distal region of a subject intended to be analyzed...

Time varying channels having pilots
A wireless communication unit for recovering transmit data comprises a receiver for receiving a signal comprising a data payload and at least two pilots, wherein at least a first pilot type of the at least two pilots is different to a second pilot type of the at least two pilots. The...

Removing environment factors from signals generated from video images captured for biomedical measurements
What is disclosed is a system and method for automatically removing undesirable periodic or random background noise from heart rate measurement signals obtained from a video camera, ambient illuminator and other unknown electromagnetic sources to improve the overall reliability of biomedical measurements. In one embodiment, a time varying video image acquired...

Photon detector
A photon detection system comprising an avalanche photo-diode, said avalanche photodiode comprising a p-n junction formed from a first semiconductor layer having a first conductivity type and a second semiconductor layer having a second conductivity type, wherein the first conductivity type is one selected from n-type or p-type and the second...

Force-equalization stationary-coil actuator for fluid movers
A fluid mover includes a first dynamic armature attached to a flexible member and a second dynamic armature attached to a second flexible member. The fluid mover also includes a housing and first and second flexible members being attached to the housing so as to form a fluid chamber volume bounded...

Time varying density of tissues
Systems for providing time varying density signatures of tissues are presented. The time varying density signatures can be calculated based on obtained sensor data reflecting one or more properties (e.g., physical, mechanical, electrical, etc.) of a target tissue. The time varying density signatures can then be used to generate an output...

Kinetic flame device
An apparatus for creating flickering flame effects. The apparatus includes a housing with an interior space with first and second stages. A drive mechanism generates a time varying electromagnetic field extending into the first stage. A first pendulum member is pivotally mounted in the interior space of the first stage and...

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