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:
Mar. 11, 2008
Filed:
Oct. 08, 2003
Applicants:
Lewis S. Ostrover, Los Angeles, CA (US);
Steven M. Blumenfeld, Lafayette, CA (US);
Inventors:
Lewis S. Ostrover, Los Angeles, CA (US);
Steven M. Blumenfeld, Lafayette, CA (US);
Assignee:
Time Warner Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K 1/00 (2006.01); H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus is described that prevents viewing or other type of playback of unauthorized copies of media files, whether received through a network or retrieved from a magnetic or optical disc. The apparatus uses data in a metadata field that forms a part of the media files. Viewing or playback is allowed only if the data meets certain predetermined criteria. An apparatus is also provided that can be used to generate a new metadata field if a media file has a metadata field with unacceptable data.