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. 27, 2001
Filed:
Sep. 16, 1998
Sung-Soo Park, Seoul, KR;
LG Semicon Co., Ltd., Choongcheongbuk-Do, KR;
Abstract
A FOD (First-One-Detector) circuit for detecting the number of leading zeros counted from a most significant bit to a first one in a binary number includes a plurality of sub-FODs respectively having a plurality of unit blocks connected in cascade, when a fraction input is less than 16 bits, depending on the number of bits and respectively provided with a plurality of transmission transistors. When the fraction input is more than 16 bits, the plurality of sub-FODs respectively output the number of leading zeros with regard to predetermined bits of fraction inputs, and a determinative signal for determining whether the fraction inputs are all zeros. The sub-FODs respectively further include an encoding circuit for encoding the number of leading zeros outputted from the plurality of sub-FODs and the determinative signal and outputting the resultant number of leading zeros. The FOD circuit employs a fewer number of transistors and realizes a faster normalization by a quick detection of leading zeros.