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:
Aug. 17, 2010
Filed:
Dec. 02, 2003
Wei Yen, Los Altos Hills, CA (US);
John Princen, Cupertino, CA (US);
Raymond Lo, Mountain View, CA (US);
Pramila Srinivasan, Palo Alto, CA (US);
Wei Yen, Los Altos Hills, CA (US);
John Princen, Cupertino, CA (US);
Raymond Lo, Mountain View, CA (US);
Pramila Srinivasan, Palo Alto, CA (US);
iGware Inc, Mountain View, CA (US);
Abstract
Delivery of licenses in a closed distribution system including a playback device and secure processor. The secure processor allows only use of authorized content, and the playback device is authorized to execute content. A user requests a license to selected content using a communication link, without the playback device, outside the closed content system to a license server. The user requests licenses using SMS, sending small amounts of information, possibly including proofs of purchase. The server responds using SMS, providing the user with a code representing information interpretable as a license, such as an encrypted content key or a shared secret known to the user. The user, using a keypad or other device, inputs that code to the playback device, which determines if it authorizes use of the content. The playback device authenticates the license, determining whether that license authorizes the user for the content, and enforces the licensed rights.