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:
Aug. 04, 2015
Filed:
Jul. 03, 2012
Applicant:
Jeffrey Tackett, Allen Park, MI (US);
Inventor:
Jeffrey Tackett, Allen Park, MI (US);
Assignee:
Harman International Industries, Inc., Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 11/00 (2006.01); H04R 29/00 (2006.01); H04R 3/00 (2006.01);
U.S. Cl.
CPC ...
H04R 29/007 (2013.01); H04R 3/007 (2013.01);
Abstract
An audio system includes a diagnostic capability to check for faults to a power source and faults to ground for output audio channels configured to drive loudspeakers. The fault to ground analysis involves analysis of a number of digital samples to determine if a predetermined threshold is exceeded during a predetermined period of time. The analysis may involve both a digital signal processor and a microprocessor performing a zero crossing analysis using the predetermined threshold and the predetermined window of time.