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:
Feb. 07, 2017
Filed:
May. 07, 2012
Applicants:
Christopher R. Wingert, San Diego, CA (US);
Pooja Aggarwal, San Diego, CA (US);
Inventors:
Christopher R. Wingert, San Diego, CA (US);
Pooja Aggarwal, San Diego, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); G06F 21/10 (2013.01); H04N 7/167 (2011.01); H04N 7/173 (2011.01); H04N 21/2347 (2011.01); H04N 21/4405 (2011.01); H04N 21/4627 (2011.01); H04N 21/6377 (2011.01); H04N 21/8355 (2011.01); H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
H04L 63/06 (2013.01); G06F 21/10 (2013.01); H04L 9/0822 (2013.01); H04L 9/0825 (2013.01); H04L 63/045 (2013.01); H04N 7/1675 (2013.01); H04N 7/17318 (2013.01); H04N 21/2347 (2013.01); H04N 21/4405 (2013.01); H04N 21/4627 (2013.01); H04N 21/63775 (2013.01); H04N 21/8355 (2013.01); H04L 2209/603 (2013.01);
Abstract
A Digital Rights Management (DRM) system provides a lightweight layering of encryption and decryption of keys that allows efficient use of different cryptographic techniques to effect the secure delivery of multimedia content. Asymmetric cryptography, where a public key is used to encrypt information that can only be decrypted by a matched private key, is used by the DRM system to deliver symmetric keys securely.