distortion (Total 15747 Patents Found)

A method and apparatus for reducing channel distortion in a broadband, wireless network comprising a residential communications gateway that accepts all incoming communications signals and securely broadcasts those signals throughout a residence. In one embodiment, the gateway comprises a space time block encoder to re...
In one implementation, the present invention includes a diode device to receive an incoming radio frequency (RF) signal to be amplified in a gain device of an amplifier and to provide a pre-distorted signal. Based on this pre-distorted signal, the gain device can output an amplified RF signal having substantial lineari...
A method of contact lithography includes predicting distortions likely to occur in transferring a pattern from a mold to a substrate during a contact lithography process; and modifying the mold to compensate for the distortions. A contact lithography system includes a design subsystem configured to generate data descri...
A delta-sigma Analog-to-Digital Converter (ADC) (IC) which includes an input feed-forward path extending from an input to the ADC to a feed-forward summing circuit disposed between a loop filter and quantizer of the ADC, and a filter disposed in the feed-forward path as an apparatus for improving distortion performance...
A distortion compensation system includes a first communication node including a first reception unit including an equalizer configured by a first digital filter unit and a first transmission unit including an emphasis circuit configured by a second digital filter unit, and a second communication node including a secon...
A more accurate model parameter estimation is achieved by using a Kalman filter for discretely estimating the model parameters between the consecutive frames of the frame sequence and performing the correction of the time-discrete Kalman filter twice per frame, firstly using a measurement value which depends on a compl...
A hand-held test meter for use with an analytical test strip in the determination of an analyte in a bodily fluid sample includes a housing, a clock module disposed in the housing, a micro-controller disposed in the housing, a low-distortion signal generation circuit block (“LDSGCB”) disposed in the housing, and a ...
One embodiment relates a method of correcting skew and/or duty cycle distortion in a differential signal using a transmitter buffer circuit. Skew and/or duty cycle distortion may be detected in the differential signal. Delay times for at least two variable-delay buffer circuits are adjusted. The variable-delay buffer c...
L'invention porte sur un procédé de compensation automatique d'une déformation transitoire thermique relative à court terme de la traverse porte-outil d'un dispositif d'usinage sur portique, lequel procédé comprend les étapes consistant à mesurer la dilatation horizontale de la traverse porte-ou...
A method of compensating for the distortion in a recording layer of a reversible thermosensitive recording medium, for which transparency of the recording layer is changeable, depending upon the temperature thereof, and the recording layer is capable of forming images and erasing the images reversibly. The distortion i...
A magnetic resonance apparatus includes a main magnet ( 12 ) which generates a main magnetic field through and surrounding an examination region ( 14 ). The main magnetic field contains inhomogeneities which affect image quality. A gradient coil assembly ( 22 ) generates gradient magnetic fields across the examination ...
A three dimensional (3D) magnetic resonance imaging (MRI) system ( 100 ) performs object-induced geometric distortion correction. The MRI system performs ( 202 ) a 3D MRI pulse sequence to acquire a first 3D MR image of an examination region containing at least a portion of a subject and performs ( 202 ) the 3D MRI pul...
An apparatus includes a microphone to generate a voice signal. The apparatus further includes an adjustable gain circuit coupled to the microphone to selectively apply a gain to the voice signal. In addition the apparatus includes an analog front end circuit coupled to the adjustable gain circuit to transmit the voice ...
A line driver with positive feedback reduces the output signal amplitude excursion required for driving a communication line, and enables the driver's output impedance to be synthesized using a reduced component value, thereby achieving a reduction in power loss through the output resistor, while simultaneously mat...
A combination distortion pedal and amplifier includes a foot pedal controls the distortion and the amplification of audio signals. The level of distortion and amplification are determined by the position of the foot pedal with a low level of distortion and amplification when the foot pedal is in a released position and...
Certain embodiments of the present invention provide for a system and method for modeling S-distortion in an image intensifier. In an embodiment, the method may include identifying a reference coordinate on an input screen of the image intensifier. The method also includes computing a set of charged particle velocity v...
A method ( 200 ) for improving quality of output audio ( 126 ). The method can include detecting an output acoustic signal ( 128 ) and generating a receive audio signal ( 134 ) based, at least in part, on the detected output acoustic signal. A frequency domain representation ( 140 ) of the receive audio signal can be c...
A distributed-feedback laser has a diffractive grating, an optical waveguide layer, and an active region. The optical waveguide layer has equivalent refractive indexes larger towards cavity end facets and smaller towards a device center portion along a cavity. The active region containing the optical waveguide layer ha...
The disclosed invention is a method of seismic exploration using non-impulsive vibratory sources activated by stationary, Gaussian codes in a wellbore environment. The method adds a distortion-free quality to the full-waveform seismic records....
An apparatus and method for acquiring an image of a patterned object such as a fingerprint including a light refracting device, a focusing lens, and a light source. The light refracting device can, for example, be a prism and includes an imaging surface, a light receiving surface and a viewing surface. Incident light f...
An image distortion correction method is provided which is capable of correcting for distortion of a projected image by designating an arbitrary correction point by using a simple and easy operation without independently providing a display device and/or a pointing device. The distortion correction method includes a fi...
An electronic ballast for driving a gas discharge lamp includes a rectifier, a valley-fill circuit, an inverter having first and second series-connected controllably conductive switches having complementary duty cycles, a control circuit for controlling the controllably conductive switches, and an independent cat ear p...
A method and system for a printing device is disclosed. The method and system comprise printing a test pattern on a print medium and generating a digital image of the printed test pattern by an imaging device. The method and system include analyzing an interference pattern to measure for distortion of the print medium ...
L'invention porte, selon des modes de réalisation, sur un système de pré-distorsion numérique où le signal de référence émis est transformé, comprenant un sous-échantillonnage, une transposition en fréquence et analogue, pour adapter le signal de rétroaction, qui subit un traitement de transformation an...
A print-distortion compensating apparatus and method for an improved electrostatic type ink jet printing apparatus including a print-distortion compensating means, in which the compensating amounts for the print-distortion due to the influence of the neighboring ink droplets, such print-distortion being variable depend...
The effect of non-linear distortion on a received signal point is reduced by the use of a circular limiter. In particular, the circular limiter computes the distance of the received signal point from the center of the signal point constellation. If this distance exceeds a desired limit, then both dimensions of the rece...