ELECTRONIC DEVICE AND METHOD OF TRANSMITTING CONTENT ITEM

• US 20170317988A1
• Filed: 07/13/2017
• Published: 11/02/2017
• Est. Priority Date: 08/31/2011
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: HIRAYAMA, Noriyuki, KOKUBO, Takashi
• Granted Patent: US 10,091,173 B2
• Time in Patent Office: Days
• 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 2209/24 Key scheduling, i.e. generating round keys or sub-keys for block encryption
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 9/30 Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
• CPC Class Codes: H04N 21/2347 involving video stream encryption
• CPC Class Codes: H04N 21/2541 Rights Management protecting software against unauthorised usage in a vending or licensing environment G06F21/10; security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
• CPC Class Codes: H04N 21/4408 involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/835 Generation of protective data, e.g. certificates protecting software against unauthorised usage in a vending or licensing environment G06F21/10

Abstract

According to one embodiment, an electronic device includes a content transmitter. The content transmitter is configured to output a content item including first data and second data to one transmission path, by applying a first copyright protection system to copyright protection of the first data and applying a second copyright protection system to copyright protection of the second data. The first copyright protection system involves encryption of data to be copyright-protected. The second copyright protection system involves no encryption of data to be copyright-protected.

Claims

1. An electronic apparatus comprising:

processor circuitry configured to;

establish a key of high-bandwidth digital content protection (HDCP) with a first electronic apparatus;

encrypt a packetized elementary stream (PES) payload for video of audiovisual content to generate encrypted video data in accordance with the HDCP, wherein audio data for audio of the audiovisual content is subject to never copy; and

multiplex the encrypted video data and the audio data to generate multiplexed data; and

a transmitter configured to transmit the multiplexed data to the first electronic apparatus over a wireless network, and transmit a registration descriptor to the first electronic apparatus over the wireless network, wherein existence of the registration descriptor indicates that the video of the audiovisual content is subject to copyright protection of the HDCP and the audio of the audiovisual content is handled as never copy.

2. The electronic apparatus of claim 1, wherein the transmitter is further configured to transmit the multiplexed data in accordance with a real-time protocol (RTP), and the registration descriptor is included in a program map table (PMT).

3. The electronic apparatus of claim 1, wherein the processor circuitry is further configured to:

encode the video of the audiovisual content to generate video data comprising the PES payload for video of the audiovisual content; and

encode the audio of the audiovisual content to generate the audio data.

4. The electronic apparatus of claim 1, wherein

the wireless network is a wireless local network conforming to IEEE 802.11 standards, and

the HDCP comprises HDCP 2.0 or a succeeding standard of the HDCP 2.0.

5. The electronic apparatus of claim 1, further comprising:

a display configured to display the video of the audiovisual content; and

a speaker configured to output the audio of the audiovisual content.

6. The electronic apparatus of claim 1, further comprising an optical disc drive configured to read the audiovisual content from a disc.

7. An electronic apparatus comprising:

a receiver configured to;

receive multiplexed data comprising (1) encrypted video data comprising a packetized elementary stream (PES) payload for video of audiovisual content is encrypted in accordance with the HDCP and (2) audio data for audio of the audiovisual content over a wireless network; and

receive a registration descriptor over the wireless network, wherein existence of the registration descriptor indicates that the video of the audiovisual content is subject to copyright protection of the HDCP and the audio of the audiovisual content is handled as never copy; and

processor circuitry configured to;

decrypt the encrypted video data to generate video data; and

handle the audio data as never copy.

8. The electronic apparatus of claim 7, wherein

the receiver is further configured to receive the multiplexed data in accordance with a real-time protocol (RTP), and

the registration descriptor is included in a program map table (PMT).

9. The electronic apparatus of claim 7, wherein the processor circuitry is further configured to:

decode the video data to generate the video of the audiovisual content; and

decode the audio data to generate the audio of the audiovisual content.

10. The electronic apparatus of claim 7, wherein

the wireless network is a wireless local network conforming to IEEE 802.11 standards, and

the HDCP comprises HDCP 2.0 or a succeeding standard of the HDCP 2.0.

11. The electronic apparatus of claim 7, further comprising:

a display configured to display the video of the audiovisual content based on the video data; and

a speaker configured to output the audio of the audiovisual content based on the audio data.

12. A transmission method of an electronic apparatus, the method comprising:

establishing a key of high-bandwidth digital content protection (HDCP) with a first electronic apparatus;

encrypting a packetized elementary stream (PES) payload for video of audiovisual content to generate encrypted video data in accordance with the HDCP, wherein audio data for audio of the audiovisual content is subject to never copy;

multiplexing the encrypted video data and the audio data to generate multiplexed data; and

transmitting the multiplexed data and a registration descriptor to the first electronic apparatus over the wireless network, wherein existence of the registration descriptor indicates that the video of the audiovisual content is subject to copyright protection of the HDCP and the audio of the audiovisual content is handled as never copy.

13. The method of claim 12, wherein the transmitting comprises transmitting the multiplexed data in accordance with a real-time protocol (RTP), and the registration descriptor is included in a program map table (PMT).

14. The method of claim 12, further comprising:

encoding the video of the audiovisual content to generate video data comprising the PES payload for video of the audiovisual content; and

encoding the audio of the audiovisual content to generate the audio data.

15. The method of claim 12, wherein

the wireless network is a wireless local network conforming to IEEE 802.11 standards, and

the HDCP comprises HDCP 2.0 or a succeeding standard of the HDCP 2.0.

16. The method of claim 12, further comprising:

displaying the video of the audiovisual content; and

outputting the audio of the audiovisual content.

17. The method of claim 12, further comprising reading the audiovisual content from a disc.

18. A reception method of an electronic apparatus, the method comprising:

receiving multiplexed data comprising (1) encrypted video data comprising a packetized elementary stream (PES) payload for video of audiovisual content is encrypted in accordance with the HDCP and (2) audio data for audio of the audiovisual content over a wireless network;

receiving a registration descriptor over the wireless network, wherein existence of the registration descriptor indicates that the video of the audiovisual content is subject to copyright protection of the HDCP and the audio of the audiovisual content is handled as never copy;

decrypting the encrypted video data to generate video data; and

handling the audio data as never copy.

19. The method of claim 18, wherein

the receiving the multiplexed data comprises receiving the multiplexed data in accordance with a real-time protocol (RTP), and

the registration descriptor is included in a program map table (PMT).

20. The method of claim 18, further comprising:

decoding the video data to generate the video of the audiovisual content; and

decoding the audio data to generate the audio of the audiovisual content.

21. The method of claim 18, wherein

the wireless network is a wireless local network conforming to IEEE 802.11 standards, and

the HDCP comprises HDCP 2.0 or a succeeding standard of the HDCP 2.0.

22. The method of claim 18, further comprising:

displaying the video of the audiovisual content based on the video data; and

outputting the audio of the audiovisual content based on the audio data.