Electrical computers: arithmetic processing and calculating – Electrical analog calculating computer – Particular function performed
Patent
1999-01-25
2000-05-30
Mai, Tan V.
Electrical computers: arithmetic processing and calculating
Electrical analog calculating computer
Particular function performed
708422, 382278, G06G 712, G06F 1715
Patent
active
060701838
ABSTRACT:
In a correlation arithmetic system adapted to detect a relative difference between two functions, an operation is simplified. This makes it possible to perform the operation with a small scale of hardware and also with great accuracy. There is adopted an operation g*h instead of the "product" in the correlation arithmetic operation. There is disclosed an arithmetic unit in which two numeral values a and b are inputted, and the two numerical values a and b are subjected to a predetermined operation process, so that a numerical value c representative of an operation result is derived. The arithmetic unit has an absolute value operation unit for evaluating an absolute value .vertline.c.vertline. of the numerical value c, and a sign operation unit for evaluating a sign "sign (c)" of the numerical value c.
REFERENCES:
patent: 4622588 (1986-11-01), Chapuis et al.
patent: 5075879 (1991-12-01), Anderson
patent: 5148386 (1992-09-01), Hori
patent: 5384722 (1995-01-01), Dulong
patent: 5548665 (1996-08-01), Gion et al.
Kawakami Susumu
Okamoto Hiroaki
Takatsu Motomu
Fujitsu Limited
Mai Tan V.
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