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. 09, 2014
Filed:
Jul. 17, 2008
Wayne M. Smith, La Cañada, CA (US);
Christopher J. Cookson, Studio City, CA (US);
Lewis S. Ostrover, Los Angeles, CA (US);
Alan E. Bell, San Marino, CA (US);
Wayne M. Smith, La Cañada, CA (US);
Christopher J. Cookson, Studio City, CA (US);
Lewis S. Ostrover, Los Angeles, CA (US);
Alan E. Bell, San Marino, CA (US);
Warner Bros. Entertainment Inc., Burbank, CA (US);
Abstract
An optical disc used for storing content includes a theft control area selected to render the disc unreadable. The disc must be exposed to radiation of a specific wavelength before it can be read by a regular device. The theft control area may include an area that contains data that instructs the device not to read the disc. This area includes a coating that changes its optical characteristics when exposed to the radiation. The material could be radiochromic or thermochromic. Alternatively, the theft control area includes an RFID device that includes an element that is radiation sensitive. In this embodiment, when the disc is irradiated, the element changes its electrical characteristics.