A method and apparatus for generating a sequence of displacement vectors and associated minimal error values. The vectors and-associated values represent the best match of a current block of elements of a first frame of a signal with one of a plurality of search blocks of elements located within a corresponding search window of a second frame. A first stream of data, representing the elements of the first frame is transmitted to a linear array of processing units; a second stream of data, repres...

A motion estimation coprocessor for use in a video data system. The motion estimation coprocessor may be used with a video memory that subdivides a P row.times.Q column image of pixels into several pages. The page structure enables efficient loading of video data into the coprocessor. The motion estimation coprocessor may perform several block matches simultaneously. The motion estimation coprocessor may perform exhaustive block matching or use a hierarchical search.

A voltage estimator for a generating system having a DC link and an inverter detects the magnitudes of the voltage and current on the DC link and develops an estimate signal representing the estimated magnitude of a fundamental component of output voltage developed by the inverter from the sensed DC voltage and current magnitudes.

A method for motion estimation includes steps for comparing image signals of image blocks within a previous frame corresponding to a motion vector detected among error values used for detecting the motion vector of a pixel unit and surrounding image blocks which are generated by moving the reference image block in every direction by one pixel, respectively, with the image signal of image blocks within a present frame for which the motion estimation is performed, and then generating error values ...

A channel estimation device receives at one end of the channel a training sequence corresponding to a learning sequence produced at the other end of the channel. The estimation device generates a replica of the learning sequence and establishes the correlation of the learning and training sequences in order to produce a set of correlation coefficients. The estimation device includes a corrector device for eliminating the coefficients having the lowest moduli. The criteria used for eliminating th...

A coherent RAKE receiver utilizes a "blind block" path gain estimation scheme, based on a maximum likelihood criterion, to estimate path gains in the receiver. It is "blind" in that preliminary hard decisions on coded bits (i.e., coded bits from the corrupt transmitted signal) are not used. Instead, a form of soft decisions are used. It is a "block" scheme in that the complex path gains are estimated for an isolated block, for example a block of B correlator outputs. The path gains varying with ...

A motion estimation coprocessor for use in a video data system. The motion estimation coprocessor may be used with a video memory that subdivides a P row.times.Q column image of pixels into several pages. The page structure enables efficient loading of video data into the coprocessor. The motion estimation coprocessor may perform several block matches simultaneously. The motion estimation coprocessor may perform exhaustive block matching or use a hierarchical search.

A range or distance estimating apparatus and method estimates the range to various points within a scene by imaging the scene through an optical mask and a lens onto a CCD, and then digitally processing the light intensity values stored in the CCD. The optical mask is designed such that the optical system transformation matrix is rank deficient for a particular set of object ranges. In this way, linear functions can be found to annihilate given sampled image data at a plurality of ranges, indepe...

A terrain estimation system and procedure in which prior knowledge of terrain configuration is taken as a starting point in the estimation procedure. The gravity field of the earth is sensed by a gradiometer which measures the gravity gradient as the gradiometer is transported by a moving platform past the earth's surface to obtain data of the topology of the earth's surface and of the geology of the terrain including subterranean oil and iron deposits. Optimal filter means, operative in respons...

The bit error rate (BER) estimation process of the present invention receives encoded data over a channel, decodes the data, and estimates the number of errors induced by the channel. The process of the present invention requires reduced processing time by the processor thereby reducing the power requirements of the processor.