University of Rochester

Advis, Inc.

Other

Carestream Health, Inc.

Zeljko Ignjatovic

Mark Frederick Bocko

Swetha S George

Michael Huang

William J Sehnert

Hanan Dery

David Headlam

Jovan Mitrovic

Swetha George

A transducer transmits into the bone a first plurality of excitation pulses at a plurality of frequencies and measures a plurality of echoes corresponding to the plurality of excitation pulses. An ultrasound machine calculates a plurality of energies each corresponding to a respective one of the plurality of echoes and identifies a lowest echo corresponding to a lowest of the plurality of energies. The ultrasound machine matches the lowest echo to a corresponding one of the first plurality of excitation pulses, the corresponding one of the first plurality of excitation pulses having a chosen frequency. The ultrasound machine generates an acoustic impulse response by deconvolving the corresponding one of the first plurality of excitation pulses with the lowest echo, and generates an updated sensing matrix by convolving the initial sensing matrix with the acoustic impulse response. Subsequent ultrasounds use the updated sensing matrix.

System and method for ultrasound imaging of tissue through bone

An ultrasound imaging system includes an array of ultrasound transducer elements chat send ultrasound energy into an object when energized for respective transmission time periods and provide responses to ultrasound energy emitted from the object for respective reception time periods, a reception modulation circuit modulating the responses with irregular sequences of modulation coefficients, a combiner circuit combining the modulated responses, and an image reconstruction processor configured to computer-process the combined modulated responses into one or more images of the object.

Ultrasound system for high-speed and high resolution imaging applications

Ultrasound imaging at high spatial resolution that makes use of both magnitude and phase of echoes in an image reconstruction process that applies unique constraints to a fitting of echoes from the object of interest to echoes from an array of known scatterers.

Deep tissue super-resolution ultrasound imaging method and system

An analog-to-digital conversion devices and methods that approach a linear relationship between resolution and oversampling rate. The process involves modulating an input analog signals with an essentially chaotic encoding signal that is deterministic, aperiodic in that it lacks spectral tones above a threshold, and bounded. The resulting encoded signal is quantized into a bit stream and decoded by applying to that bit stream a non-linear estimation related to said chaotic signal to thereby produce an output representing said input analog signal in digital form.

Analog-to-digital converters employing continuous-time chaotic internal circuits to maximize resolution-bandwidth product&#x2014;CT TurboADC

A detector of terahertz (THz) energy includes a MOSFET having an extended source region, and a channel region depleted of free carriers, which MOSFET operates in a sub-threshold voltage state and has an output that is an exponential function of THz energy supplied to the gate.

THz radiation detection in standard CMOS technologies based on thermionic emission

The present invention is directed to a circuit device configured to monitor a sensor device. The sensor device is configured to measure a predetermined physical parameter and provide a sensor output signal corresponding to the predetermined physical parameter. The circuit device includes a sampling circuit configured to sample the sensor output signal to obtain a predetermined number (N) of sensor output signal samples. an analog multiplication circuit to generate one of a plurality of predetermined digital sequences. and an analog integrator circuit. configured to add the N multiplication products to generate an analog signal power estimation value which corresponds to a degree of correlation between the sensor output signal and the selected predetermined digital sequence.

Input signal power sensing sentry

In general, a method includes comparing a first input signal with a second input signal to produce an output signal. The first input signal corresponds to an amount of light detected by a sensor, and the second input signal corresponds to an aggregated value of the output signal. The method may also include aggregating the output signal in a digital accumulator and converting a digital signal from an output of the digital accumulator to an analog signal.

Image sensing system

In an image sensor, the current through the in-pixel readout transistor is sensed by a circuit that is external to the pixel, and according to the measured current value a feedback current is supplied to charge the read-line parasitic capacitance. The feedback current is supplied by a circuit that also is external to the pixel area. The amplifier structure is reconfigurable so that it can be used both to read out and to reset the pixel.

CMOS image sensor readout employing in-pixel transistor current sensing

A method of embedding useful data in a digital music file in a way that maintains compatibility with existing digital music formats and players and has no effect on the size of the digital music file or sound quality. A digital music file is analyzed to determine a list of start and end locations of at least n consecutive zeros, defining a list of record locations, where n is an integer greater than two. The file store locations are written in initial record locations of the list of record locations and the data and a start key is written remaining record locations of the list of record locations. A process of retrieving the embedded data is also disclosed.

Embedding and employing metadata in digital music using format specific methods

A sigma-delta ADC (A) uses blue-noise (random, pseudo-random) modulation () to reduce the effect of the substrate noise. Pairs of blue-noise multipliers () are placed before and after each non-delayed integrator (). In the case of a sample-delayed integrator, the integrator is first separated into a non-delayed integrator () followed by the delay element (). The multiplying sequence is a sequence of 1's and &#x2212;1 's that has blue-noise spectral characteristics (i.e., the spectrum has a low frequency deficiency).

Blue-noise-modulated sigma-delta analog-to-digital converter

In an array of imaging elements, a pixel level analog-to-digital-converter design splits the quantizer into an input transistor at the pixel location and a quantizer body for each row. The feedback digital-to-analog converter is also split into two components, one at the pixel location and one provided either for each row or for the entire array.

Multiplexed-input-separated &#x3a3;-&#x394; analog-to-digital converter for pixel-level analog-to-digital conversion utilizing a feedback DAC separation

Data are embedded in an audio signal for watermarking, steganography, or other purposes. The audio signal is divided into time frames. In each time frame, the relative phases of one or more frequency bands are shifted to represent the data to be embedded. In one embodiment, two frequency bands are selected according to a pseudo-random sequence, and their relative phase is shifted. In another embodiment, the phases of one or more overtones relative to the fundamental tone are quantized.

Data hiding via phase manipulation of audio signals

In a high-pass (mirrored) integrator structure that employs chopper modulation, the input and output of the mirrored integrator are connected to the input and output ports of the operational amplifier, bypassing the chopper stabilization modulators. The mirrored integrator can be used in sigma-delta analog-to-digital converters.

Growing community of inventors

Rochester, NY, United States of America

Zeljko Ignjatovic