Fujitsu Corporation

Kazuhiro Nomoto

Manabu Kubota

Yoshinori Soejima

Teruyuki Sato

Makiko Ito

Hideaki Kurihara

Yasuko Shirai

Masato Ito

A processor, which executes m number of arithmetic operations in parallel, executes a partial sum instruction which takes an i-th to (i+m&#x2212;1)-th elements of an input data series as input elements, so as to obtain first vector data, executes the partial sum instruction which takes a (i+x)-th to (i+x+m&#x2212;1)-th elements of the input data series as the input elements, so as to obtain second vector data, and performs operations to subtract the p-th element of the first vector data and add the p-th element of the second vector data from and to a sum of the i-th to (i+x&#x2212;1)-th elements of the input data series in parallel for each of the 0-th to (m&#x2212;1)-th elements, so as to calculate sums of elements for m sections different from each other in parallel, and moving average processing to calculate a moving average from the sums of elements of the sections.

Moving average processing in processor and processor

A CODEC has a DSP which can consecutively execute a plurality of algorithms without restriction of a memory capacity. The DSP performs an encoding/decoding operation on a digital signal. A program memory stores a program divided into a plurality of block programs, the program being stored on an individual block program basis. A data memory stores a set of data used for executing each block program stored in the program memory, the set of data being divided into a plurality of data blocks and stored on an individual data block basis. A program executing unit executes each block program stored in the program memory by using a corresponding data block stored in the data memory. A program changing unit obtains a new block program from an external device each time execution of one of the block programs by the program executing unit is completed so as to store the obtained new block program in the program memory.

CODEC for consecutively performing a plurality of algorithms

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Fukuoka, Japan

Kazuhiro Nomoto