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. 29, 2012
Filed:
Mar. 27, 2009
Applicants:
Pingnan Shi, Greenwood, IN (US);
Daniel K. Chappell, Greenwood, IN (US);
Walter Miller, Greenwood, IN (US);
Gregory W. Massey, Greenfield, IN (US);
Inventors:
Pingnan Shi, Greenwood, IN (US);
Daniel K. Chappell, Greenwood, IN (US);
Walter Miller, Greenwood, IN (US);
Gregory W. Massey, Greenfield, IN (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/46 (2006.01); H04B 17/00 (2006.01); H04Q 1/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for measuring Hum on a digital QAM carrier using a testing device for testing digital TV signals including a QAM demodulator therein, and to a testing device implementing the method. A micro-controller is used to sample a register associated with an AGC circuit in the QAM demodulator, and to process the collected register values to obtain one or more Hum characteristics.