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:
Jul. 26, 1988
Filed:
May. 04, 1987
Applicant:
Inventors:
Glen Wittrock, Sioux Falls, SD (US);
Barry A Arneson, Sioux Falls, SD (US);
Assignee:
Sencore, Inc., Sioux Falls, SD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358139 ; 358156 ;
Abstract
A composite RF television signal is converted to an IF signal, passed through an AGC circuit and the amplitudes of the horizontal sync pulses are sampled only during the horizontal sync period. The high and low peak samples are stored and the difference between the levels of these peak samples, which is proportional to the HUM in the system, drives a meter calibrated to show the percent of HUM in the composite RF television signals.