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:
Oct. 03, 1989
Filed:
Jul. 09, 1986
Applicant:
Inventor:
Tadao Fujita, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; H04N / ;
U.S. Cl.
CPC ...
371 30 ; 358314 ; 358336 ; 360 381 ;
Abstract
An input receives a digital video signal that when free of error lies within a given frequency band and when not free of error contains components lying outside the frequency band. Such components have an amplitude versus frequency distribution that is a function of the number and location of errors in the digital video signal. A detector is responsive to the input for detecting components of the digital video signal lying outside the frequency band, and a pattern recognition circuit responsive to the detector produces an output indicative of the number and location of the errors.