Mstar Semiconductor, Inc.

Yu-Hsiang Tseng

Cheng-Yu Hsieh

Chih-Hao Chang

Wei-Hsiang Hong

An image processing method is provided. The method is for calculating a first weighted sum of absolute difference (WSAD) of a first search window and a corresponding first target window, and a second WSAD of a second search window and a corresponding second target window. The first and second search windows have a common matching window, and the first and second target windows have a common target block. The method includes: a) calculating a plurality of absolute differences of the common matching window and the common target block; b) determining a first weight coefficient group and a second weight coefficient group; and c) summing up products of multiplying the absolute differences by the first weight coefficient group to generate the first WSAD, and summing up products of multiplying the absolute differences by the second weight coefficient group to generate the second WSAD.

Image processing circuit and method thereof

A decompression circuit for decompressing data includes a first decompression unit and a second decompression unit. The data sequentially includes a compressed first string, a compressed distance-length pair and a compressed second string. The first decompression unit performs a first decompression on the data to obtain a first string, a distance-length pair and a second string. The second decompression unit receives and decompresses the first string, the distance-length pair and the second string. The first decompression unit does not involve data associated with the distance-length pair when decompression the second string.

Decompression circuit and associated compression method and decompression method

A decompression circuit includes a first decompression unit and a second decompression unit. The first decompression unit performs a first decompression operation on data to generate first decompressed data. The first decompressed data includes a plurality of literals and a distance-length pair. The second decompression unit receives the first decompressed data, and sequentially performs a second decompression operation on the literals and the distance-length pair to generate second decompressed data. After the second decompression unit receives the distance-length pair from the first decompression unit and before the second decompression unit completes decompressing the distance-length pair, the second decompression unit transmits data required for the subsequent first decompression operation performed by the first decompression unit to the first decompression unit according to the distance-length pair.

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Hsinchu Hsien, Taiwan

Yu-Hsiang Tseng