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:
Apr. 19, 1988
Filed:
May. 02, 1986
William L Thomas, Arapahoe County, CO (US);
Steven J Sletten, Aurora, CO (US);
John W Mathews, Jr, Pine, CO (US);
Jeffrey C Swinehart, Arapahoe County, CO (US);
Michael W Fellinger, Boulder, CO (US);
John E Hershey, Boulder, CO (US);
George P Hyatt, Nederland, CO (US);
Robert F Kubichek, Nederland, CO (US);
Control Data Corporation, Bloomington, MN (US);
Abstract
A method, apparatus and system are provided for recognizing broadcast segments, such as commercials, in real time by continuous pattern recognition without resorting to cues or codes in the broadcast signal. Each broadcast frame is parametized to yield a digital word and a signature is constructed for segments to be recognized by selecting, in accordance with a set of predefined rules, a number of words from among random locations throughout the segment and storing them along with offset information indicating their relative locations. As a broadcast signal is monitored, it is parametized in the same way and the library of signatures is compared against each digital word and words offset therefrom by the stored offset amounts. A data reduction technique minimizes the number of comparisons required while still maintaining a large database.