Abstract: A computing device includes an array of processing elements mutually connected to perform single instruction multiple data (SIMD) operations, memory cells connected to each processing element to store data related to the SIMD operations, and a cache connected to each processing element to cache data related to the SIMD operations. Caches of adjacent processing elements are connected. The same or another computing device includes rows of mutually connected processing elements to share data. The computing device further includes a row arithmetic logic unit (ALU) at each row of processing elements. The row ALU of a respective row is configured to perform an operation with processing elements of the respective row.

Abstract: A processing element includes an input zero detector to detect whether the input from the neighbor processing element contains a zero. When the input from the neighbor processing element contains the zero, a zero disable circuit controls the input from the neighbor processing element and respective data of the memory to both appear as unchanged to the arithmetic logic unit for the operation. A controller of an array of processing elements adds a row of error-checking values to a matrix of coefficients, each error-checking value of the row of error-checking values being a negative sum of a respective column of the matrix of coefficients. The controller controls a processing element to perform an operation with the matrix of coefficients and an input vector to accumulate a result vector. Owing to the error-checking values, when a sum of elements of the result vector is non-zero, an error is detected.

Abstract: A method of converting video data from a YUV format to an RGB format comprising (a) performing a matrix transformation of Y, U and V pixel data of a set of possible Y, U and V parameters into corresponding R, G and B parameters, (b) determining whether the set of R, G and B parameters forms a first lookup table whose size exceeds the size of a particular memory space, (c) in the event the lookup table is too large for the memory space, truncating least significant bits of at least the U and V parameters, (d) repeating steps (a), (b) and (c) until the first lookup table fits the memory space, and then storing the first lookup table in the memory space, and (e) using the first lookup table to provide RGB pixel data using the YUV data as addresses thereto.

Abstract: A method of reconstructing a stream of digital frequency domain audio signal samples into audio signals comprising parsing the stream of samples and reconstructing subband data in the frequency domain, processing the subband data to obtain a processed frequency domain digital audio signal, and constructing a time domain audio output signal from the processed frequency domain digital audio signal.

Abstract: A method of drawing moving images on a graphics display comprising (a) receiving data defining an input image in a predetermined resolution, (b) commanding a graphics processor to draw a corresponding image frame on a display having a number of scanning lines which is a multiple m of a number of scanning lines of the input image and a multiple n of a number of pixels in a horizontal line of the input image, (c) drawing successive lines of the input image on a first and on each m.sup.th scanning line of the graphics display, while stretching each pixel on each drawn line over n pixels, (d) copying each drawn line on respective immediately following m-1 lines, and (e) repeating steps (b)-(d) for successive frames of the input image.