METHOD OF DECODING A DVB SERVICE, METHOD OF MANAGING THE DECODING, ASSEMBLY OF A DVB-H RECEIVER AND OF A MEMORY AND TERMINAL

• US 20110243247A1
• Filed: 12/22/2008
• Published: 10/06/2011
• Est. Priority Date: 12/21/2007
• Status: Abandoned Application

• Current Assignee: Dibcom
• Original Assignee: Dibcom
• Inventors: Defoug, Guillaume, Antunes, Joseph
• Application Number:
  US12/809,659
• Publication Number:
  US 20110243247A1
• Time in Patent Office: Days
• US Class Current: 375/240.25
• CPC Class Codes: H04H 60/73 using meta-information
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/64315 DVB-H
• CPC Class Codes: H04N 7/163 by receiver means only

Abstract

Method of decoding a DVB digital television service by a handheld DVB-H digital television receiver intended to be integrated into a terminal, characterized in that it includes: a step of retaining in memory, in a memory of the terminal (2), SI/PSI tables, while the terminal is switched off; a step of switching on (28) the terminal; a step of loading (30) the SI/PSI tables from the memory of the terminal; and a step of attempted decoding (40), of the DVB service using the SI/PSI tables loaded.

Claims

1. A method of decoding a DVB digital television service by a handheld DVB-H digital television receiver (4) intended to be integrated into a terminal (2), characterized in that it comprises:

a step of retaining in memory, in a memory (10) of the terminal (2), SI/PSI tables, while the terminal (2) is switched off;

a step of switching on (28) the terminal (2);

a step of loading (30) from the memory (10) of the terminal (2) the SI/PSI tables which were retained in memory when the terminal was switched off; and

a step of attempted decoding (40) of said DVB service using the SI/PSI tables loaded.

2. A decoding method according to claim 1, characterized in that the switching on (28) of the terminal (2) is performed by a user.

3. A decoding method according to claim 1, characterized in that it comprises, between the loading step (30) and the attempted decoding step (40):

a step of transmission (32) of a message indicating that the receiver (4) is ready, from the DVB-H receiver (4) to the terminal (2); and

a step of reception of a request (38) for decoding said DVB service.

4. A decoding method according to claim 1, characterized in that it comprises, after the step of switching on the receiver (2), a step of updating (42) the SI/PSI service information tables.

5. A decoding method according to claim 3, characterized in that it comprises, prior to the step of retaining in memory:

a step of saving (22) the SI/PSI tables in the memory (10); and

a step of switching off (26) the terminal (2).

6. A decoding method according to claim 5, characterized in that the switching off (26) of the terminal (2) is performed by a user.

7. A method of managing, by means of a terminal (2) comprising a DVB-H digital television receiver (4), the decoding of a DVB digital television service, characterized in that it comprises the steps of the method of decoding said service by the DVB-H receiver (4) according to claim 5, and in that it further comprises:

between the step of reception of a request (20) for switching off the terminal (2) and the step of switching off (26) the terminal (2), a step of saving (24) an identifier of the DVB service by the terminal (2);

between the step of transmission (32) of a message indicating that the receiver is ready and the step of reception of a request (38) for decoding said service;

a step of reception (34) by the terminal (2) of the message indicating that the receiver is ready; and

in response to the message indicating that the receiver is ready, a step of transmission (36), by the terminal (2), of a request for decoding said DVB service, to the DVB-H receiver (4).

8. A method according to claim 7, characterized in that the step of updating (42) each of the SI/PSI tables comprises:

a step of reading the version field value of the SI/PSI table conveyed by the transport packet TS;

a step of comparison of the read value of the version field of said SI/PSI table with a recorded value; and

in the case where the read value is different from the recorded value;

a step of recovery of the whole of the SI/PSI table.

9. A method according to claim 7, characterized in that the step of updating (42) the SI/PSI service information tables comprises a step of recovery of all the following succeeding SI/PSI service information tables.

17. A decoding method according to claim 2, characterized in that it comprises, between the loading step (30) and the attempted decoding step (40):

a step of transmission (32) of a message indicating that the receiver (4) is ready, from the DVB-H receiver (4) to the terminal (2); and

a step of reception of a request (38) for decoding said DVB service.

18. A decoding method according to claim 2, characterized in that it comprises, after the step of switching on the receiver (2), a step of updating (42) the SI/PSI service information tables.

19. A decoding method according to claim 3, characterized in that it comprises, after the step of switching on the receiver (2), a step of updating (42) the SI/PSI service information tables.

20. A decoding method according to claim 1, characterized in that it comprises, prior to the step of retaining in memory:

a step of saving (22) the SI/PSI tables in the memory (10); and

a step of switching off (26) the terminal (2).

10. An assembly of a DVB-H digital television receiver (4) and of a memory (10), said assembly being intended to be integrated into a terminal (2), characterized in that the memory (10) is designed to retain SI/PSI tables in memory, while the terminal (2) is switched off, and in that the receiver (4) comprises

means for switching on (12) the terminal (2);

means for loading (14) from the memory (10) the SI/PSI tables which were retained in memory when the terminal was switched off; and

means for attempted decoding (16) of said DVB service using the SI/PSI tables loaded.

11. An assembly according to claim 10, characterized in that the means for switching on (12) the terminal (2) are adapted to be actuated by a user.

12. An assembly according to claim 10, characterized in that the receiver comprises:

means for transmission (6), to the terminal (2), following the loading of the SI/PSI tables, of a message indicating that the receiver is ready;

means for reception (6) of a request from the terminal (2) for decoding said DVB service.

13. An assembly according to claim 10, characterized in that the receiver comprises means for updating (16) SI/PSI service information tables.

14. An assembly according to claim 10, characterized in that the receiver comprises:

means for saving SI/PSI service information tables in the memory (10); and

means for switching off (12) the terminal (2).

15. An assembly according to claim 14, characterized in that the means for switching off (12) the terminal (2) are adapted to be actuated by a user.

16. A terminal (2), characterized in that it comprises an assembly of a DVB-H digital television receiver (4) and of a memory (10) according to claim 10, and in that it further comprises:

means for saving, following the reception of a request for switching off the terminal (2), an identifier of the current DVB service;

means for reception (6) of the message indicating that the receiver is ready; and

means for transmission (6), following the reception of the message indicating that the receiver is ready, of a request to the DVB-H receiver (4) for decoding said DVB service, the identifier of which was saved by the saving means.