Transmission of media keys

• US 20070230703A1
• Filed: 03/31/2006
• Published: 10/04/2007
• Est. Priority Date: 03/31/2006
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Barrus, John, Graham, Jamey, Piersol, Kurt
• Granted Patent: US 9,525,547 B2
• Time in Patent Office: Days
• US Class Current: 380/277
• CPC Class Codes: H04L 2209/60 Digital content management, e.g. content distribution
• CPC Class Codes: H04L 2209/80 Wireless network architectures or network communication protocols for wireless network security H04W12/00
• CPC Class Codes: H04L 9/0819 Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) network architectures or network communication protocols for key distribution in a packet data network H04L63/062
• CPC Class Codes: H04L 9/0838 Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these network architectures or network communication protocols for key exchange in a packet data network H04L63/061

Abstract

Techniques are described for communicating electronic media keys from one device to another. The target device may comprise different mechanisms for indicating that transmission of a media key is in progress and also to indicate successful transmission. Various actions may be performed in response to transmission of media keys.

Claims

1. A method of transmitting an electronic media key, the method comprising:

indicating, on a first device, initiation of transmission of an electronic media key to the first device from a second device, the electronic media key comprising a data identifier and a decryption key; and

indicating, on the first device, completion of the transmission of the electronic media key from the second device to the first device.

2. The method of claim 1 further comprising printing media data corresponding to the data identifier using the first device.

3. The method of claim 1 wherein the first device is a digital display, the method further comprising displaying media data corresponding to the data identifier on the digital display.

4. The method of claim 1 wherein the first device is a projector, the method further comprising outputting media data corresponding to the data identifier using the projector.

5. The method of claim 1 wherein the first device is a storage device, the method further comprising storing media data corresponding to the data identifier on the storage device.

6. The method of claim 1 further comprising:

communicating the electronic media key from the first device to a third device.

7. The method of claim 6 further comprising:

storing the electronic media key at the first device; and

wherein the communication comprises communicating the electronic media key to the third device when a set of one or more conditions are met.

8. The method of claim 6 further comprising:

storing the electronic media key at the first device; and

wherein the communication comprises communicating the electronic media key to the third device according to a schedule.

9. The method of claim I wherein indicating completion of the transmission comprises displaying media data corresponding to the data identifier on the first device.

10. A device comprising:

a first indicator configured to indicate initiation of transmission of an electronic media key to the device from a second device, the electronic media key comprising a data identifier and a decryption key; and

a second indicator configured to indicate completion of the transmission of the electronic media key from the second device to the device.

11. The device of claim 10 further configured to print media data corresponding to the data identifier.

12. The device of claim 10 further comprising a display configured to display media data corresponding to the data identifier.

13. The device of claim 10 wherein the device is a projector configured to output media data corresponding to the data identifier.

14. The device of claim 10 further comprising a memory configured to store media data corresponding to the data identifier.

15. The device of claim 10 further comprising:

a module configured to communicate the electronic media key from the device to a third device.

16. The device of claim 15 further comprising:

a memory configured to store the electronic media key; and

wherein the module is configured to communicate the electronic media key to the third device when a set of one or more conditions are met.

17. The device of claim 15 further comprising:

a memory configured to store the electronic media key; and

wherein the module is configured to communicate the electronic media key to the third device according to a schedule.

18. A method of communicating a media key, the method comprising:

determining, at a first device, a data identifier for media data;

determining, at a first device, a decryption key;

generating, at the first device, an electronic media key comprising the data identifier and the decryption key; and

receiving, at the first device, a signal to communicate the electronic media key from the first device to a second device; and

communicating the electronic media key from the first device to the second device responsive to the signal.