Apparatus and method for controlling output of protected content on a television

• US 9,100,715 B2
• Filed: 02/14/2012
• Issued: 08/04/2015
• Est. Priority Date: 05/18/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, Jongsung, Lee, Kunil
• Primary Examiner(s): Lewis, Jonathan V
• Application Number:
  US13/396,087
• Publication Number:
  US 20120297413A1
• Time in Patent Office: 1,267 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04N 21/25816 involving client authentication restricting access to computer systems by authenticating users using a predetermined code G06F21/33; cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06
• CPC Class Codes: H04N 21/26606 for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM] arrangements for conditional access to broadcast information or to broadcast-related services H04H60/14
• CPC Class Codes: H04N 21/4181 for conditional access
• CPC Class Codes: H04N 21/4182 for identification purposes, e.g. storing user identification data, preferences, personal settings or data restricting access to computer systems by authenticating users using a predetermined code in combination with an additional device, e.g. dongle or smart card G06F21/123
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/4353 involving decryption of additional data arrangements using cryptography for the use of broadcast information or broadcast-related information H04H60/23
• CPC Class Codes: H04N 21/4623 Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message] arrangements for conditional access to broadcast information or to broadcast-related services H04H60/14
• CPC Class Codes: H04N 21/6377 directed to server one-way streaming services wherein the source is controlled by the destination H04L65/613
• CPC Class Codes: H04N 21/63775 for uploading keys, e.g. for a client to communicate its public key to the server key management H04L9/08; network support of key management H04L63/06
• CPC Class Codes: H04N 7/163 by receiver means only
• CPC Class Codes: H04N 7/165 Centralised control of user terminal subsequent to an upstream request signal H04N7/17345; Registering at central by two-way working H04N7/17309
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58

Abstract

An apparatus for a television includes storage areas for storing a key and authentication information, a communication unit to transmit and receive information from a server supplying protected content, and a controller to control output of the protected content from the server based on an authentication procedure. This procedure includes encrypting the stored authentication information with the key, transmitting the encrypted authentication information to the server, and then outputting the protected content received from the server for display after transmission of the encrypted authentication information if determined to be valid.

Claims

1. An apparatus for a television comprising:

a first storage area to store a key;

a second storage area to store authentication information in an encrypted form;

a transceiver to transmit a first signal requesting connection to a server through a network and to receive a second signal from the server requesting authentication information for the television; and

a controller to control output of the protected content received from the server based on an authentication procedure, wherein the authentication procedure includes;

detection of the authentication information stored in the second storage area in the encrypted form,

decryption of the detected authentication information stored in the encrypted form,

encryption of the decrypted authentication information with the key,

transmission of a third signal that includes the encrypted authentication information to the server,

reception of a fourth signal requesting additional authentication information for authenticating the television from the server,

encryption of the additional authentication information with the stored key,

transmission of a fifth signal including the encrypted additional authentication information to the server, and

outputting the protected content received from the server for display after transmission of the fifth signal.

2. The apparatus of claim 1, wherein the authentication information includes a string stored in the second storage area in an encrypted form.

3. The apparatus of claim 1, wherein the authentication information includes an Electronic Serial Number (ESN) stored in the second storage area.

4. The apparatus of claim 1, wherein the authentication information includes a string and an Electronic Serial Number (ESN) stored in the second storage area.

5. The apparatus of claim 1, further comprising:

a device to receive information indicative of a gesture of a user,

wherein the controller interprets the gesture information as a command for performing a predetermined operation.

6. The apparatus of claim 1, wherein the key is a private key.

7. The apparatus of claim 1, wherein:

the transceiver receives information indicating that the encrypted authentication information transmitted in the third signal is invalid, and

the controller controls output of a message for display based on the received information indicating that the encrypted authentication information is invalid.

8. A method for managing information for a television, comprising:

storing a key in a first storage area;

storing authentication information in a second storage area, wherein the authentication information is stored in an encrypted form; and

performing an authentication procedure that includes;

transmitting a first signal requesting a connection to a server,

receiving a second signal from the server requesting authentication information for the television,

detecting the authentication information in the encrypted form from the second storage area,

decrypting the detected authentication information stored in the encrypted form,

encrypting the decrypted authentication information with the key,

transmitting a third signal that includes the encrypted authentication information to the server,

receiving a fourth signal from the server requesting additional information for authenticating the television,

encrypting the additional authentication information with the key,

transmitting a fifth signal including the encrypted additional authentication information to the server after receiving the fourth signal, and

controlling output of protected content received from the server for display after transmission of the fifth signal.

9. The method of claim 8, wherein the authentication information includes a string stored in the second storage area in an encrypted form.

10. The method of claim 8, wherein the authentication information includes an Electronic Serial Number (ESN) stored in the second storage area.

11. The method of claim 8, wherein the authentication information includes a string and an Electronic Serial Number (ESN) stored in the second storage area.

12. The method of claim 8, wherein the key is a private key.