Byte-switching arithmetic unit

Details Byte-switching arithmetic unit Byte-switching arithmetic unit

1998-10-27

2000-12-26

An, Meng-Ai T.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

708653, 370208, 370211, G06F 738, G06F 752

Patent

active

061674184

ABSTRACT:
The present invention provides a byte-switching arithmetic unit comprising at least three stages, each of which has a plurality of two-input selectors operable in a predetermined minimum bit width unit, the byte-switching arithmetic unit having two inputs of a predetermined input bit width, wherein a first stage has a first number of first stage two-input selectors where the first number corresponds to a quotient of a division to the predetermined input bit width by the predetermined minimum bit width unit, wherein a second stage has a second number of second stage two-input selectors where the second number corresponds to a half of the first number so that the second stage two-input selectors receive a half of outputs from the first stage two-input selectors, and wherein a third stage has a third number of third stage two-input selectors where the third number also corresponds to the half of the first number so that the third stage two-input selectors receive both a half of outputs from the second stage two-input selectors and a half of outputs from a remaining half group of the first stage two-input selectors.

REFERENCES:
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patent: 5517437 (1996-05-01), Yamashita et al.
patent: 5638367 (1997-06-01), Gaytan et al.
patent: 5737256 (1998-04-01), Nakagawa et al.
patent: 5787031 (1998-07-01), Ichikawa et al.
patent: 5789985 (1998-08-01), Yamauchi et al.
patent: 5951625 (1999-09-01), Duvanenko et al.

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