Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2007-05-15
2007-05-15
Mai, Tan V. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S710000
Reexamination Certificate
active
10283246
ABSTRACT:
A system for adding multiple sets of numbers via a fixed-width adder includes an adder for receiving each of the sets of binary numbers at corresponding sets of adder inputs, and for generating a sum of each set of binary numbers. Each set of numbers defines a distinct data path through the adder. For each set of numbers, the system further includes a logic gate for inhibiting a carry path, from each portion of the adder corresponding to each carry path, to a next adjacent carry path. The system isolates two or more contiguous data paths through the fixed-width adder corresponding to each of the two or more sets of two binary numbers. The invention prevents unwanted signals from crossing summing lane boundaries in different processing modes. The same adder logic can thus be used for each processing mode by varying the combination of mode select control signals.
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Simon Knowles, “A Family of Adders”,IEEE, pp. 30-37, 1999.
Broadcom Corporation
Mai Tan V.
Sterne Kessler Goldstein & Fox PLLC
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