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:
Jun. 22, 1993
Filed:
May. 08, 1991
Applicant:
Inventors:
Rabab K Ward, Vancouver, CA;
Qin Zhang, Vancouver, CA;
Assignee:
The University of British Columbia, Vancouver, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; G06K / ;
U.S. Cl.
CPC ...
358139 ; 382 43 ;
Abstract
A cable television signal for example may be monitored and impairments determined and in many cases classified by grabbing at least portion of a transmitted frame of video information somewhere on the network to provide a video signal, performing a two dimensional Fourier transform on the video signal and analyzing the Fourier transform so obtained to determine the location of areas indicating above average occurrence of specific frequencies to provide an indication of an impairment.
Ward, Rabab. (1993). Signal quality monitoring system (U.S. Patent No. 5221967). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5221967
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile