Method and apparatus for playing content

• US 7,506,377 B2
• Filed: 06/11/2003
• Issued: 03/17/2009
• Est. Priority Date: 06/11/2003
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Hanks, Darwin Mitchel
• Primary Examiner(s): Zand; Kambiz
• Assistant Examiner(s): POLTORAK, PIOTR
• Application Number:
  US10/460,559
• Publication Number:
  US 20050005104A1
• Time in Patent Office: 2,106 Days
• Field of Search: None
• US Class Current: 726/26
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: H04L 2209/12 Details relating to cryptographic hardware or logic circuitry
• CPC Class Codes: H04L 2209/60 Digital content management, e.g. content distribution
• CPC Class Codes: H04L 9/0822 using key encryption key

Abstract

Methods and apparatus are disclosed for playing content. In one embodiment, an identification key is generated. The identification key is encrypted and transmitted to a playback drive. Encrypted content containing a content identification key is received. If the content identification key matches the identification key that was generated, the content is decrypted and played.

Claims

1. A method comprising:

receiving, at the playback device, a session key from the playback drive;

configuring programmable hardware using the received session key;

generating an identification key;

encrypting the identification key via the programmable hardware;

transmitting the encrypted identification key from a playback device to a playback drive;

decrypting the encrypted identification key transmitted from the playback device;

receiving, at the playback device, encrypted content containing a content identification key from the playback drive;

decrypting the content identification key; and

if the content identification key matches the identification key, decrypting

at least a portion of the encrypted content via the programmable hardware, and playing the portion.

2. The method of claim 1, wherein the playing comprises driving a graphics card of a personal computer monitor.

3. The method of claim 1, wherein the playing comprises driving a video display component.

4. The method of claim 1, wherein the playing comprises driving an audio component.

5. The method of claim 1, wherein the programmable hardware comprises a field programmable gate array (FPGA).

6. The method of claim 1, further comprising transmitting the encrypted content from the playback drive directly to the playback device.

7. The method of claim 1, further comprising:

configuring second programmable hardware based on the session key,

wherein the decrypting the encrypted identification key transmitted from the playback device is performed by the second programmable hardware.

8. A playback device comprising:

an identification key generator;

an interface to transmit an encrypted identification key and to receive encrypted content embedded with a content identification key;

an encryption device having programmable hardware, the encryption device to configure the programmable hardware using a received session key, the programmable hardware configured by the session key to encrypt the identification key, the programmable hardware further configured by the session key to decrypt the content identification key and to decrypt at least a portion of the encrypted content, thereby forming decrypted content, if the content identification key matches the identification key; and

a play mechanism to play the decrypted content.

9. The playback device of claim 8, further comprising a digital to analog converter to convert the decrypted content to analog format, and wherein the display device displays the decrypted content in analog form.

10. The playback device of claim 8, wherein the programmable hardware comprises a field programmable gate array (FPGA).

11. The playback device of claim 8, wherein the play mechanism comprises one of a stereo component, a television, and a computer monitor.

12. A system comprising:

a playback device to transmit an encrypted identification key to a playback drive and to receive encrypted content from the playback drive, the playback device including an identification key generator to generate an identification key, a first encryption device, and a play mechanism to play decrypted content, the first encryption device having programmable hardware, the first encryption device to configure the programmable hardware using a session key received from the playback drive, the programmable hardware configured by the session key to encrypt the identification key, to decrypt a content identification key received with the encrypted content, and to decrypt at least a portion of the encrypted content if the content identification key matches the identification key; and

the playback drive, the playback drive to receive the encrypted identification key from the playback device and to transmit the encrypted content to the playback device, the playback drive including a second encryption device, the second encryption device to decrypt the encrypted identification key, to insert the identification key into at least one location of content, and to encrypt the content containing the identification key.

13. A system comprising:

a playback drive to receive a first key, in encrypted form, the playback drive to decrypt the first key and to encrypt content, the playback drive further to transmit a session key and the content, in encrypted form, wherein the transmitted content is based on the first key and includes a content identification key; and

a playback device to transmit the first key, in encrypted form, to the playback drive, the playback device further to receive the transmitted content and session key and to configure programmable hardware using the session key, the programmable hardware configured by the session key to encrypt the first key and to decrypt at least a portion of the transmitted content based on the first key if the content identification key matches the first key, the playback device further to play the decrypted content.

14. The system of claim 13, wherein the playback device comprises a video monitor having the programmable hardware.

15. The system of claim 13, wherein the playback device comprises a television having the programmable hardware.

16. The system of claim 13, wherein the playback device comprises a stereo having the programmable hardware.

17. The system of claim 13, the playback device to read the content from a media coupled to the playback drive.