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:
May. 21, 2013
Filed:
Sep. 07, 2005
Stefan Andersson, Klagerup, SE;
Markus Liwell, Malmo, SE;
Stefan Andersson, Klagerup, SE;
Markus Liwell, Malmo, SE;
Sony Ericsson Mobile Communications AB, Lund, SE;
Abstract
The invention relates to a method for distributing content to a mobile device using a digital rights management (DRM) scheme, adapted for the case when files are exchanged over an external memory or over a serial connection between a computer (PC) and the mobile device, and a mobile device (ME) adapted therefor. The mobile device creates a request file (RORe-questrop) comprising information necessary for forming a rights object file. On the computer side, the request file is retrieved and a response file is sent back to the mobile device including the encrypted content (Contentdcf) and a rights object file (Content.ro). The mobile device receives the response file and decrypts and stores the content. The files may be exchanged over a DRM folder, arranged in the mobile device and accessible by the computer in mass storage mode, or the DRM folder may be arranged in an external memory (MS) alternately accessible by the mobile device and the computer.