Receiver

• US 7,280,660 B2
• Filed: 06/29/2001
• Issued: 10/09/2007
• Est. Priority Date: 06/30/2000
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Aaltonen, Janne, Salo, Juha
• Primary Examiner(s): Zand; Kambiz
• Application Number:
  US09/894,532
• Publication Number:
  US 20020021809A1
• Time in Patent Office: 2,293 Days
• Field of Search: 380/200, 380/202, 380/210, 380/270
• US Class Current: 380/200
• CPC Class Codes: H04H 20/42 Arrangements for resource management
• CPC Class Codes: H04H 2201/40 characterised in that additional data relating to the broadcast data are available via a different channel than the broadcast channel
• CPC Class Codes: H04H 60/23 using cryptography, e.g. encryption, authentication, key distribution
• CPC Class Codes: H04H 60/46 for recognising users' preferences
• CPC Class Codes: H04H 60/91 Mobile communication networks for accessing the Internet H04H60/85
• CPC Class Codes: H04L 63/18 using different networks or channels, e.g. using out of band channels cryptographic mechanisms or cryptographic arrangements for key distribution involving distinctive intermediate devices or communication paths H04L9/0827; cryptographic mechanisms or cryptographic arrangements for authentication using a plurality of channels H04L9/3215
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/488 Data services, e.g. news ticker systems specially adapted for using meteorological information in broadcast systems H04H60/71
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/64315 DVB-H
• CPC Class Codes: H04N 5/38 Transmitter circuitry for the transmission of television signals according to analogue transmission standards H04N5/14 takes precedence
• CPC Class Codes: H04N 7/142 Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
• 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: H04W 12/03 Protecting confidentiality, e.g. by encryption

Abstract

The present invention provides a method and apparatus for receiving and transmitting signals via multiple communication channels involving receivers capable of receiving digital television signals, such as signals according to the terrestrial digital video broadcasting (DVB-T) standard are also commonplace.

Claims

1. A terminal including a first receiver and a second receiver, wherein the first receiver is configured to receive an encrypted first signal from a first communications network and the second receiver is configured to receive from a second communications network a second signal conveying information for decrypting the encrypted first signal, wherein the first receiver is further configured to decrypt the encrypted first signal using the information received from the second communication network, and wherein the first receiver is different from the second receiver.

2. The terminal according to claim 1, comprising a subscriber identification module (SIM) containing security data for use in conjunction with the second signal for enabling the encrypted first signal to be decrypted.

3. The terminal according to claim 1, wherein the encrypted first signal is a digital video broadcasting signal (DVB) signal, and the first receiver is a digital video broadcasting (DVB) signal.

4. The terminal according to claim 1, wherein the second signal is a global system for mobile (GSM) signal, and the second receiver is a global system for mobile (GSM) receiver.

5. The terminal according to claim 1, wherein the second signal is a general packet radio service (GPRS) signal, and the second receiver is a general packet radio service (GPRS) receiver.

6. A terminal including a first receiver and a second receiver and a subscriber identification module (SIM) wherein:

the first receiver is different from the second receiver, and

the first receiver is configured to receive an encrypted first signal from a first communications network, the second receiver is configured to receive, from a second communications network, a second signal conveying decryption information and the subscriber identification module (SIM) containing security data, wherein the first receiver uses the conveyed decryption information in conjunction with the security data to decrypt the encrypted first signal.

7. An apparatus including:

a first transmitter for transmitting to a terminal, including a first receiver and a second receiver, an encrypted signal to the first receiver on a first communications network, wherein the first receiver is different from the second receiver; and

a second transmitter for transmitting on a second communications network information to the second receiver, wherein the information is used by the terminal to decrypt the encrypted signal.

8. The apparatus according to claim 7, wherein the encrypted signal is a digital broadcast video (DVB) signal, and the first communications network is a digital video broadcasting (DVB) network.

9. The apparatus according to claim 7, wherein the second communications network is a global system for mobile (GSM) network, and the transmitter is a global system for mobile (GSM) transmitter.

10. The apparatus according to claim 7, wherein the second communications network is a general packet radio service (GPRS) signal, and the second transmitter is a general packet radio service (GPRS) receiver.

11. A method of receiving with a terminal comprising a first receiver and a second receiver, wherein the first receiver is different from the second receiver, the method comprising the steps of:

with the first receiver, receiving an encrypted first signal from a first communications network;

with the second receiver, receiving from a second communications network a second signal conveying information for decrypting the encrypted signal; and

decrypting, with the first receiver, said encrypted first signal using said received information.

12. The method according to claim 11, comprising using security data stored on a subscriber identification module (SIM) in conjunction with the second signal for decrypting the encrypted first signal.

13. The method according to claim 11, comprising transmitting the signal as a digital video broadcasting (DVB) signal.

14. The method according to claim 11, comprising transmitting complementary information as the second signal via a global system for mobile (GSM) network.

15. The method according to claim 11, comprising transmitting complementary information as the second signal via a general packet radio service (GPRS) network.

16. A method of receiving with a terminal comprising a first receiver and a second receiver, wherein the first receiver is different from the second receiver, the method comprising the steps of:

with the first receiver, receiving an encrypted first signal from a first communications network;

with the second receiver, receiving from a second communications network a second signal conveying information for decrypting the encrypted first signal ; and

decrypting, with the first receiver, the encrypted first signal using the received information and security data retrieved from a subscriber identification module (SIM).

17. A method of transmitting to a terminal comprising a first receiver and a second receiver, wherein the first receiver and the second receiver are different, the method comprising the steps of:

with a first transmitter, transmitting an encrypted signal on a first communications network which is received by the first receiver; and

with a second transmitter, transmitting on a second communications network information which is received by the second receiver, wherein the terminal uses the information received by the second receiver to decrypt the encrypted signal.

18. The method according to claim 17, comprising transmitting the encrypted signal as a digital video broadcasting (DVB) signal.

19. The method according to claim 17, comprising transmitting complementary information as the information via a global system for mobile (GSM) network.

20. The method according to claim 17, comprising transmitting complementary information as the information via a general packet radio service (GPRS) network.