초록 ▼

A system and method for delivering digital media content to a user over a network is disclosed. The illustrative embodiment of the present invention enables multiple types of electronic devices to access the same digital media content for the same end user through the use of a smart card equipped wi

A system and method for delivering digital media content to a user over a network is disclosed. The illustrative embodiment of the present invention enables multiple types of electronic devices to access the same digital media content for the same end user through the use of a smart card equipped with a license for the digital media content. Depending on the format of the digital media content, devices such as phones, pagers, internet appliances or PDAs can be used to present the digital media content to a user, as can traditional consumer electronic devices such as DVD players and VCRs. The encrypted content may be freely transferred and stored without copyright concerns since the decryption key is generated by the smart card containing the license.

대표청구항 ▼

We claim: 1. A method for delivering digital media content, said method for use with a network, said network interfaced with a storage medium containing digital media content and further interfaced with an electronic device, said electronic device interfaced with a first smart card and second smart

We claim: 1. A method for delivering digital media content, said method for use with a network, said network interfaced with a storage medium containing digital media content and further interfaced with an electronic device, said electronic device interfaced with a first smart card and second smart card, said method comprising the steps of: sending a request for said digital media content over said network from said electronic device; receiving a stream of said digital media content in encrypted form from said medium with said electronic device, said encrypted digital media content being stored on said electronic device; extracting a cipher from said digital media content and sending said cipher to said second smart card; generating a new cipher with said second smart card and sending said new cipher from said second smart card to said first smart card, said first smart card equipped with a license for said digital media content; obtaining a first decryption key in response to said new cipher using said first smart card, said decryption key being transmitted from said first smart card to said electronic device; obtaining a second decryption key using said second smart card, said second decryption key being transmitted from said second smart card to said electronic device; and using said first and second decryption keys and a decryption algorithm located on said electronic device to decrypt said digital media content stored on said electronic device. 2. The method of claim 1, said method comprising the further step of: presenting said digital media content to said user. 3. The method of claim 1 further comprising the steps of: denoting as a reference point on said smart card a place in the stream of digital media content being presented to a user where said user stops receiving a group of digital media content. 4. The method of claim 1 comprising the steps of: denoting as reference points on said smart cad each place in a stream of digital media content where each one of a plurality of users has stopped receiving a group of digital media content.