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. 02, 2016
Filed:
Oct. 13, 2014
Silicon Laboratories Inc., Austin, TX (US);
Javier Elenes, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
Systems and methods are disclosed for rapid detection of digital content within received radio frequency (RF) signals. The disclosed embodiments digitize received RF signals and apply a cyclic prefix correlation to generate correlation values that are accumulated over a plurality of symbol times. The accumulated correlation values are then stored in a dump register after these plurality of symbol times, and the accumulated correlation values are used to determine whether or not digital content is present within the broadcast channel being analyzed. The disclosed embodiments are useful, for example, in determining whether DAB (Digital Radio Broadcast) digital content is present within audio broadcast channels by detecting the cyclic prefix within the DAB transmissions.