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:
Aug. 08, 2000
Filed:
May. 19, 1998
Applicant:
Inventors:
Hongyi Chen, Beijing, CN;
Zhiqiang Zeng, Beijing, CN;
Assignee:
United Microelectronics Corp., Hsinchu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
708700 ; 708400 ; 708530 ;
Abstract
A method and an apparatus for controlling calculation error produced by the accumulation error due to digit truncation in a non-integer computation. The error is eliminated by controlling the values of LSB, C.sub.in and the addition/subtraction selecting signal as, so that C.sub.in is not necessarily equal to C.sub.in. Considering a even number of cascaded pipelines, C.sub.in in the odd pipelines is set as 0, wherein C.sub.in in the even pipelines is set as 1. The resultant error is thus eliminated mutually by odd and even pipelines.