Device and method for noise suppression
Granted: April 19, 2011
Patent Number:
7930174
An analog signal is sampled to provide a digitized signal and the resultant digitized signal is output to a delay element, which provides a delayed digital signal. The analog signal is also input to an analog noise detector, which provides a noise detector output signal to a digital logic unit. The digital logic unit processes the noise detector output signal to determine if noise is present in the analog signal, and provides a control signal. An amplifier receives the delayed digital…
Motion estimation and/or compensation
Granted: April 19, 2011
Patent Number:
7929609
Estimating and/or compensating motion in a video image is provided wherein an image segment of the video image is selected, a search area is defined around the image segment, the defining being based on a range of possible motion vectors for the image segment, and image data related to said search area is retrieved. The search area is defined to have its center offset from a center of the image segment. The offset may be determined by a global motion parameter.
Method for determining weighting factors for the color calculation of a color value of texels for a footprint
Granted: April 12, 2011
Patent Number:
7924289
In a method for determining weighting factors for the color calculation of a color value of texels for a footprint covering a plurality of texels in a texel grid, in a graphic system, form information of the footprint is determined at first. Afterwards, the edges of the footprint are determined and the edges determined in this way are approximated by a staircase function. The texels of the texel grid contacted by the staircase function are determined and a weighting factor is determined…
Method of automatically testing audio-video synchronization
Granted: April 12, 2011
Patent Number:
7924929
A method of testing audio/video synchronization comprising calculating a frequency of a device used to encode a digital stream based on program clock references calculating first time differences between audio decoding time stamps and actual audio decoding times; calculating second time differences between audio presentation time stamps and actual audio presentation times; calculating third time differences between video decoding time stamps and 4 actual video decoding times; and…
Method and circuit arrangement for suppressing an orthogonal perturbation
Granted: April 5, 2011
Patent Number:
7920653
The invention relates to a method as well as a circuit arrangement for suppression of a perturbing quadrature component of a carrier signal of an amplitude-modulated signal during the recovery of the carrier signal in a synchronous demodulator, which outputs a quadrature signal (Q). The perturbing quadrature component of the carrier signal is estimated and the estimated quadrature component is subtracted from the quadrature signal (Q).
Method and apparatus for a multicarrier receiver circuit with guard interval size detection
Granted: March 29, 2011
Patent Number:
7916815
A method and apparatus for a multicarrier receiver circuit with guard interval size detection described. The invention allows the FFT size and guard interval size to be detected quickly even in the presence of relatively noisy input signals. The method is robust in noise environments, and also sufficiently robust to process signals having severe multipath and/or co-channel interference. Moreover, the method is of low complexity, and can be implemented in a VLSI circuit.
Method and device for determining motion vectors
Granted: February 22, 2011
Patent Number:
7894529
An image to be interpolated is subdivided into a number of image blocks and a motion estimation technique is implemented to provide at least one initial motion vector for each of the image blocks. A modified motion vector is generated for each image block based on the initial motion vectors assigned to the individual image blocks. At least one additional image block is determined through which the motion vector assigned to the given image block passes at least partially, and the modified…
Stereo signal processing apparatus
Granted: February 22, 2011
Patent Number:
7894609
Disclosed is a stereo signal processing apparatus, in particular for a digital BTSC television decoder, comprising a sub-channel signal processing section which comprises an input for inputting an input sub-channel signal, a DBX expanding means and an output for outputting an output sub-channel signal. The particularity of the present invention is that said sub-channel signal processing section further comprises a phase error compensating means for correcting a phase error of said DBX…
Apparatus for and method of controlling a feedforward filter of an equalizer
Granted: February 8, 2011
Patent Number:
7885325
A method of synchronizing a feedforward filter (46) that receives a signal resulting from the transmission of a series of symbols through a channel, wherein the series of symbols includes a predetermined sequence of symbols includes the step of developing a plurality of samples from the received symbols (60), wherein a sequence of samples corresponds to the predetermined sequence of symbols. The method further includes the steps of estimating a channel impulse response from the plurality…
Motion estimation with video mode detection
Granted: February 1, 2011
Patent Number:
7881500
The invention relates to a method for providing a motion parameter set and/or a picture repetition pattern from an input video signal, in particular for de-interlacing a video signal with using a candidate motion parameter set weighted with a picture repetition pattern value for calculating a motion compensated pixel from a pixel value of a first image. To provide motion compensation which accounts for field repetition patterns, minimizing an error criterion between at least one pixel…
Arrangement for generating a 3D video signal
Granted: February 1, 2011
Patent Number:
7880784
The invention relates to an arrangement for generating a 3D video signal, which produces a 3D effect when it is displayed on a screen, from an input video signal that is made up of frames, each of which has an odd field and an even field, where in order to generate the 3D video signal alternately an even field n and an odd field n?1 (or vice versa) and subsequently alternately an even field n+1 and an odd field n (or vice versa) are displayed, where in order to generate the 3D video…
Circuit arrangement and method for locking onto and/or processing data, in particular audio, T[ele]v[ision] and/or video data
Granted: January 11, 2011
Patent Number:
7868949
In order to further develop a circuit arrangement (100; 102; 104; 106) and a method of locking onto and/or processing data, in particular audio, television and/or video data, by means of at least one phase locked loop (40), wherein phase information is detected by means of at least one phase detector (44), in particular following the arrival of at least one rising edge and/or falling edge of at least one analog input signal (50; 50), at least one increment (24) is determined by means of…
Method and data processing device for processing digital data of a signal
Granted: January 4, 2011
Patent Number:
7864904
The invention relates to a method for processing of a signal (s), wherein desired data (d(f(N))) are received via a desired channel (N) of a plurality of frequency channels (N?2, N?1, N, N+1, N+2) and unwanted data (d(f(N?2)), d(f(N?1)), d(f(N+1)), d(f(N+2))) can be received on a neighboring channel (N?2, N?1, N+1, N+2) and wherein the signal (s) is sampled with a sampling frequency (fa) to avoid aliasing of the desired channel (N) in order to create digital data (do), wherein the…
Iterative method of interpolating image information values
Granted: November 30, 2010
Patent Number:
7843509
The invention relates to an iterative method for determining an interpolated image information value in an image that comprises a number of image regions arranged in a matrix-like fashion having original image regions to which one image information value has been assigned, and having at least one image region to be interpolated. In order to determine an interpolated image information value, the method specifies a starting interpolation direction and determines a quality measure for the…
Apparatus for and method of controlling a feedforward filter of an equalizer
Granted: October 26, 2010
Patent Number:
7822112
A method of synchronizing a feedforward filter that receives a signal resulting from the transmission of a series of symbols through a channel, wherein the series of symbols includes a predetermined sequence of symbols includes the step of developing a plurality of samples from the received symbols, wherein a sequence of samples corresponds to the predetermined sequence of symbols. The method may further include the steps of estimating a channel impulse response from the plurality of…
Adaptive reduction of noise signals and background signals in a speech-processing system
Granted: October 26, 2010
Patent Number:
7822602
An audio input signal is filtered using an adaptive filter to generate a prediction output signal with reduced noise, wherein the filter is implemented using a plurality of coefficients to generate a plurality of prediction errors and to generate an error from the plurality of prediction errors, wherein the absolute values of the coefficients are continuously reduced by a plurality of reduction parameters.
Method and device for processing received data of a radio interface
Granted: August 17, 2010
Patent Number:
7778308
The invention relates to an apparatus and method for processing received data (I1/Q1, I2/Q2; d1, d2) of a radio interface, wherein the received data includes a sequence of data which have been transmitted for the purpose of error reduction through different branches of a carrier (Rk) of the radio interface, and which are combined into a sequence of data (DATAOUT) to be outputted, wherein the combining is implemented on the basis of carrier information values (Req,k, SINRk) of the…
Method and system for reducing mosquito noise in a digital image
Granted: August 17, 2010
Patent Number:
7778482
A method and system is provided for reducing mosquito noise in a digital image. The method and system receives an input luminance value for a first pixel in the digital image, and determines whether the first pixel is in relative close proximity to an object appearing in the digital image, based on a comparison of the variation between the input luminance value for the first pixel and luminance values of a first plurality of neighboring pixels. If the first pixel is in relative close…
Processor for processing data using access addresses linked to the data type of the processed data
Granted: August 3, 2010
Patent Number:
7769989
A processor architecture, for example, a SIMD processor architecture, includes at least two arithmetic/logic units to implement data processing, a data memory arrangement or a memory device interface to a memory arrangement to store data of different data types, an addressing unit to generate access addresses for the data to be stored in the data memory arrangement, and an address memory arrangement to store access addresses. The access addresses are logically linked to the given data…
Efficient decoders for LDPC codes
Granted: August 3, 2010
Patent Number:
7770090
An LDPC decoder, applicable to LDPC codes including codes where check nodes within the same group are connected to a common bit node, successively processes groups of check nodes in a particular iteration, including updating bit nodes in that same iteration responsive to messages generated in response to processing a group of check nodes. Within an iteration, the LDPC decoder may also track the number of unresolved parity check equations, and cease iterating or output to an outer block…
