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:
Dec. 16, 2003
Filed:
Dec. 08, 2000
Razak Hossain, San Diego, CA (US);
STMicroelectronics, Inc., Carrollton, TX (US);
Abstract
There is disclosed a circuit for determining if an N-bit number is equal to a power of two. The circuit comprises: 1) a first stage of detection gates, each of the first stage detection gates capable of receiving a first data bit and a second data bit from the N-bit number and generating a first output bit and a second output bit, wherein the first and second output bits are 01 if the first and second data bits are different and are one of 00 and 11 if the first and second data bits are the same; and 2) a second stage of detection gates coupled to the outputs of the first stage of detection gates, each of the second stage detection gates receiving three of the first stage output bits and generating a first output bit and a second output bit, wherein the first and second output bits of the second stage detection gates are 01 if only one of the three first stage output bits is equal to Logic 1 and are one of 00 and 11 otherwise.