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:
Nov. 15, 2011
Filed:
Sep. 10, 2004
Carmen Laura Basile, Maidenhead, GB;
Jonny Boyd Reckless, Newark, GB;
Lee Avery, Fremont, CA (US);
Glenn Allen Siebert, Morgan Hill, CA (US);
Kordian Jacek Kurowski, San Jose, CA (US);
Carmen Laura Basile, Maidenhead, GB;
Jonny Boyd Reckless, Newark, GB;
Lee Avery, Fremont, CA (US);
Glenn Allen Siebert, Morgan Hill, CA (US);
Kordian Jacek Kurowski, San Jose, CA (US);
Rovi Solutions Corporation, Santa Clara, CA (US);
Abstract
Generally the more effective is the copy protection provided on an optical disc, such as a DVD, the greater is the likelihood that the copy protection will adversely interfere with legitimate uses of the optical disc. It is therefore proposed to include at least one region of subversive data within the content in the data area of an optical disc, and then to prevent access to each such region of subversive data during normal playback of the disc. For a DVD, the subversive data may be incorporated within video objects and/or may be in gaps between files in the DVD_Video zone. It is arranged that there are no navigable paths to the regions of subversive data.