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:
May. 24, 1988
Filed:
Sep. 03, 1986
Alan L Wilson, Hoffman Estates, IL (US);
Michael W Bright, Arlington Heights, IL (US);
Eric F Ziolko, Schaumburg, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A detector locates a shift register sequence within a digital data stream by correlating the data stream with a sequence generated locally from a portion of the data stream. Error correction circuitry estimates errors that may have corrupted the sequence during transmission across a noisy channel and corrects them to the extent possible. The data stream and local sequence are correlated during an interval that is shifted either ahead or behind the portion of the error-corrected data stream used to initialize the local sequence generator, thereby avoiding the region during which short-term correlation between the data stream and local sequence would otherwise cause false indications of detection when only noise or random data is being received.