Redundant binary type digital operation unit

Details Redundant binary type digital operation unit Redundant binary type digital operation unit

1992-04-07

1993-10-05

Smith, Jerry

Boots, shoes, and leggings

364745, 364737, G06F 738, G06F 1100

Patent

active

052511669

ABSTRACT:
This redundant binary type digital operation unit is provided with a redundant binary adder which gives a plurality of carry margin digits to the word length of the input redundant binary data on the higher digit side and further gives a protection digit for overflow judgment at the highest position to form the entire operation word length. It is also provided with a fixed value data output circuit to which a carry signal from the redundant binary adder showing whether a carry exists or not is input and which outputs the maximum value data when the carry signal value is "1" and the minimum value data when the carry signal value is a value other then "1", as well as a selection circuit which selects and outputs the output data from the redundant binary adder when the sign bit of the protection digit at the highest position sent from the redundant binary adder is "0", and the maximum or minimum value data from the fixed value data output circuit when the sign bit is "1".

REFERENCES:
patent: 4722066 (1988-01-01), Armer et al.
patent: 4945507 (1990-07-01), Ishida et al.
patent: 4985861 (1991-01-01), Yamashina et al.
patent: 5144576 (1992-09-01), Briggs et al.

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