Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2006-10-03
2006-10-03
Mai, Tan V. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S491000
Reexamination Certificate
active
07117237
ABSTRACT:
An information processing system that is configured in such a manner that computational processing is performed on input data in accordance with a processing sequence, for outputting data, comprises: a plurality of arithmetic units (7-1to7-x), each computing at an arithmetic precision 2mbits (where m is a natural number) based on the processing sequence; and a plurality of cascade connection terminals for cascading these arithmetic units each other. When the maximum arithmetic precision that is required during computational processing is 2nbits (where n is a natural number and is fixed), x numbers of (where x is a natural number) the arithmetic units are cascaded in a manner such that the inequality x≧2n/2mis satisfied. When an arithmetic precision of 2n1bits (where n1≦n, and n1 is variable) is necessary during computational processing, x1 numbers of the arithmetic units are cascaded in a manner such that the inequality x1≧2n1/2m(where x1 is a natural number and is variable) is satisfied. This makes it possible to easily implement an information processing system for performing computations to any desired precision in a hardware manner, and also makes it possible to support a simple hardware-based method of expanding the arithmetic precision.
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Amano Kazuhiko
Kasahara Hiroshi
Nakamura Tsugio
Shimoda Tatsuya
Mai Tan V.
Watson Mark P.
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