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. 30, 2008
Filed:
Feb. 25, 2005
Jung-hun Heo, Suwon-si, KR;
Jung-Hun Heo, Suwon-si, KR;
Abstract
The n-to-m bit down-scaling correlates a plurality of n-bit correlation integral values into a plurality of m-bit data (n>m). The n-bit correlation integral values are obtained by correlating global positioning system (GPS) signals with a plurality of expected codes. Upper (n−m+1) bits are selected from the n-bit correlation integral values, and (n−m+1)-bit estimated absolute values are obtained. A significant bit of a maximum value of the upper (n−m+1) bits of the estimated absolute values is selected. A scale level is obtained based on the significant bit of the maximum value. The n-bit correlation integral values are down-scaled into the m-bit data based on the scale level. The amount of n-bit correlation integral values is reduced into m-bit correlation integral values by the down-scaling method, and thereby reducing a size of the memory for storing the correlation integral values.