International Business Machines Corporation

Mitsubishi Denki Kabushiki Kaisha

Hideki Inomata

Tokumichi Murakami

Takeshi Kubota

Takahide Nogayama

Okikazu Tanno

Daisuke Mogi

Yu Ito

A method, executed by one or more processors, includes receiving a first bit sequence corresponding to source data having a source encoding bit-length (BLS), generating one or more additional bit sequences by shifting the first bit sequence by shift lengths that are equal to a multiple of the source encoding bit-length, partitioning the first bit sequence and the one or more additional bit sequences according to a target encoding bit-length (BLT) to provide a plurality of target encoding search patterns, and searching a target character string encoded with the target encoding using the plurality of target encoding search patterns. A computer system and computer program product corresponding to the above method are also disclosed herein.

Searching base encoded text

A picture analyzer detects coding difficulty information by analyzing the source picture data. A picture converter converts the format of the source picture data using spatial conversion or temporal conversion, or both. A coding unit then codes the converted picture data output from the picture converter. A preprocess controller controls the picture converter based on the coding difficulty information, selecting either spatial conversion or temporal conversion, or both. The resulting encoded picture features visually outstanding image quality in which block distortion is not conspicuous, and the coding unit avoids using a coarser than necessary quantization step even when the bit rate is low.

Picture coding apparatus, and picture coding method

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Tokyo, Japan

Hideki Inomata