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:
Sep. 29, 1987
Filed:
Apr. 26, 1984
Applicant:
Inventors:
David A Kiewit, Palm Harbor, FL (US);
Daozheng Lu, Dunedin, FL (US);
Assignee:
A. C. Nielsen Company, Northbrook, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04H / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
358 84 ; 455-2 ;
Abstract
A method and apparatus for identifying programs such as television programs received from various sources detects the occurrence of predetermined events such as scene changes in a video signal and extracts a signature from the video signal. The signatures and the times of occurrence of the signatures are stored and subsequently compared with reference signatures to identify the program. The signatures may be compared in pairs to increase resolution, and the time interval between events or signatures may also be used to identify the program, either by themselves or in conjunction with the signatures.
Published as:
EP0161512A1; JPS60236331A; BR8501964A; BR8501965A; ES8700531A1; ES8708110A1; US4697209A; ES8800468A1; ES8800813A1; ES8802095A1; EP0283570A2; EP0283570A3; EP0161512B1; ATE44849T1; DE3571733D1; CA1279124C;