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:
Nov. 16, 1993
Filed:
May. 21, 1992
Gordon T Davis, Raleigh, NC (US);
Baiju D Mandalia, Boca Raton, FL (US);
John C Sinibaldi, Pompano Beach, FL (US);
William M Zevin, Boca Raton, FL (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus for efficient computation of a demodulation process on a digital signal processor for a sampled signal, which includes programming a digital signal processor to apply the sampled signal to an interpolating filter to add interpolation samples to the sampled signal, to search the sampled signal for a threshold crossing associated with a start bit, performing a linear interpolation to find a point where the threshold crossing occurs when a threshold crossing is detected, responsive to determining the point of the threshold crossing, determining a center of a start bit when the point of the threshold crossing has been determined, calculating a supplemental delay, and determining center points for subsequent of data bits utilizing the supplemental delay period from the center of the start bit.