The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2013
Filed:
Oct. 26, 2009
Rochelle L. Stortz, Austin, TX (US);
Raymond A. Bertram, Austin, TX (US);
Rochelle L. Stortz, Austin, TX (US);
Raymond A. Bertram, Austin, TX (US);
VIA Technologies, Inc., New Taipei, TW;
Abstract
A system which uses common adder circuitry to perform either one of a horizontal minimum instruction and a sum of absolute differences instruction including multiple adders, a sum circuit, a compare circuit, and a routing circuit. The input operands include multiple digital values which are delivered by the routing circuit to the adders depending upon which instruction is indicated. Each adder determines a difference between a pair of digital values. The differences are grouped and summed together by the sum circuit for the sum of absolute differences instruction. The adders are paired together for the horizontal minimum instruction, in which each pair provides carry and propagate outputs. The upper portions of a pair of digital values are compared by the upper adder and the lower portions are compared by the lower adder, and the carry and propagate outputs are collectively used to determine the minimum value.