Invention Grant
- Patent Title: Optical disc with a theft deterrent coating
- Patent Title (中): 带有防盗涂层的光盘
-
Application No.: US12174841Application Date: 2008-07-17
-
Publication No.: US08830806B2Publication Date: 2014-09-09
- Inventor: Wayne M. Smith , Christopher J. Cookson , Lewis S. Ostrover , Alan E. Bell
- Applicant: Wayne M. Smith , Christopher J. Cookson , Lewis S. Ostrover , Alan E. Bell
- Applicant Address: US CA Burbank
- Assignee: Warner Bros. Entertainment Inc.
- Current Assignee: Warner Bros. Entertainment Inc.
- Current Assignee Address: US CA Burbank
- Agency: Gottlieb, Rackman & Reisman, P.C.
- Main IPC: G06F21/00
- IPC: G06F21/00 ; G11B7/24 ; G11B23/28 ; G11B20/00

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.
Public/Granted literature
- US20090010127A1 OPTICAL DISC WITH A THEFT DETERRENT COATING Public/Granted day:2009-01-08
Information query