Method for controlling electronic program information and apparatus for receiving the electronic program information

• US 8,276,177 B2
• Filed: 04/07/2008
• Issued: 09/25/2012
• Est. Priority Date: 04/06/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Jong Moon, Choi, In Hwan, Kwak, Kook Yeon, Kim, Byoung Gill, Song, Won Gyu, Kim, Jin Woo, Cho, Eun Hyung, Lee, Hyoung Gon
• Primary Examiner(s): HOSSAIN, FARZANA E
• Application Number:
  US12/098,719
• Publication Number:
  US 20090125940A1
• Time in Patent Office: 1,632 Days
• Field of Search: 725 39- 61, 725/114, 725/131, 725/138, 725/139, 725/144, 725/146, 725/151
• US Class Current: 725/54
• CPC Class Codes: H04L 1/006 Trellis-coded modulation
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• 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 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4381 Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/462 Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006

Abstract

A data transmission system for minimizing the number of errors during Tx/Rx times of digital data under mobile environments, and a data processing method for the same are disclosed. The system additionally codes digital data, and transmits the resultant coded data. As a result, the program information has a strong resistance to noise and channel variation, and can quickly cope with the rapid channel variation.

Claims

1. A method for receiving a broadcast signal, the method comprising:

receiving a broadcast signal carrying a transmission frame, wherein a collection of data groups is carried within specific time periods in the transmission frame, each of the data groups including known data sequences, signaling information and mobile service data, which comprise broadcast service data for a mobile broadcast system, wherein each of the data groups includes;

a first region in which the mobile service data is not multiplexed with main service data,

a second region including a first data segment in which K bytes of the main service data are multiplexed with the mobile service data, and

a third region including a second data segment in which M bytes of the main service data are multiplexed with the mobile service data, wherein K<

M,

wherein the first region is positioned between two regions of the second region and the first and second regions are positioned between two regions of the third region in each of the data groups,

wherein the collection of data groups carries the mobile service data encoded through a Reed-Solomon (RS) frame, and wherein the signaling information includes an RS code mode for the RS frame;

demodulating the received broadcast signal;

building the RS frame including the mobile service data in the data groups and decoding the RS frame according to the RS code mode;

extracting electronic program information about the mobile service data in the decoded RS frame; and

displaying the extracted electronic program information.

2. The method according to claim 1, wherein the receiving of the broadcast signal is implemented by selective reception of multiplexed main service data and the mobile service data.

3. The method according to claim 1, wherein the receiving a broadcast signal includes:

receiving main service data and the mobile service data within the specific time periods in which the mobile service data and main service data are multiplexed.

4. The method according to claim 1, wherein demodulating the received broadcast signal includes:

performing at least one of a carrier recovery and timing recovery on the received mobile service data using at least one known data sequence in the data groups.

5. The method according to claim 1, wherein the demodulating step includes:

compensating for channel distortion contained in the demodulated broadcast signal using at least one known data sequence in the data groups.

6. The method according to claim 1, wherein the demodulating step includes:

decoding the mobile service data in units of a block.

7. The method according to claim 1, further comprising:

storing the extracted electronic program information.

8. The method according to claim 1, further comprising:

configuring the extracted electronic program information in the form of a display format.

9. The method according to claim 1, further comprising:

receiving a user control signal; and

controlling a display of the electronic program information by the received user control signal.

10. The method according to claim 1, further comprising:

receiving a user control signal; and

controlling processing of the broadcast signal by the received user control signal.

11. An apparatus for receiving a broadcast signal, the apparatus comprising:

a signal receiving unit for receiving a broadcast signal carrying a transmission frame, wherein a collection of data groups is carried within specific time periods in the transmission frame, each of the data groups including known data sequences, signaling information and mobile service data, which comprise broadcast service data for a mobile broadcast system, wherein each of the data groups includes;

a first region in which the mobile service data is not multiplexed with main service data,

a second region including a first data segment in which K bytes of the main service data are multiplexed with the mobile service data, and

a third region including a second data segment in which M bytes of the main service data are multiplexed with the mobile service data, wherein K<

M,

wherein the first region is positioned between two regions of the second region and the first and second regions are positioned between two regions of the third region in each of the data groups,

wherein the collection of data groups carries the mobile service data encoded through a Reed-Solomon (RS) frame, and wherein the signaling information includes an RS code mode for the RS frame;

a demodulating unit for demodulating the received broadcast signal;

an RS frame decoder for building the RS frame including the mobile service data in the data groups and decoding the RS frame according to the RS code mode;

a data decoder for extracting electronic program information about the mobile service data in the decoded RS frame; and

an application controller for controlling a display of the extracted electronic program information.

12. The apparatus according to claim 11, wherein the signal receiving unit receives main service data and the mobile service data within the specific time periods in which the mobile service data and main service data are multiplexed.

13. The apparatus according to claim 11, wherein the demodulating unit includes:

a known sequence detector for detecting the known data sequences in the data groups.

14. The apparatus according to claim 11, wherein the demodulating unit includes:

a demodulator which performs at least one of a carrier recovery and timing recovery on the received mobile service data using at least one known data sequence in the data groups.

15. The apparatus according to claim 11, wherein the demodulating unit includes:

a channel equalizer which compensates for channel distortion contained in the demodulated broadcast signal using at least one known data sequence in the data groups.

16. The apparatus according to claim 11, wherein the demodulating unit includes:

a block decoder which decodes the mobile service data in units of a block.

17. The apparatus according to claim 11, wherein the data decoder extracts electronic program information about the mobile service data, and stores the extracted electronic program information to a PSI/PSIP database.

18. A method for transmitting a broadcast signal, the method comprising:

encoding mobile service data to build a Reed-Solomon (RS) frame according to an RS code mode;

forming data groups of the mobile service data using separated portions from the RS frame, wherein each of the data groups include known data sequences, signaling information and the mobile service data, which comprise broadcast service data for a mobile broadcast system, wherein each of the data groups includes;

a first region in which the mobile service data is not multiplexed with main service data,

a second region including a first data segment in which K bytes of the main service data are multiplexed with the mobile service data, and

a third region including a second data segment in which M bytes of the main service data are multiplexed with the mobile service data, wherein K<

M,

wherein the first region is positioned between two regions of the second region and the first and second regions are positioned between two regions of the third region in each of the data groups,

wherein the signaling information includes the RS code mode for the RS frame;

forming mobile data packets including data in the data groups;

interleaving data in the formed mobile data packets; and

transmitting the interleaved data via a broadcast signal carrying a transmission frame, wherein a collection of the data groups is carried within specific time periods in the transmission frame, wherein the collection of data groups carries the mobile service data encoded through the RS frame.

19. A method for receiving a broadcast signal, the method comprising:

receiving a broadcast signal carrying a transmission frame, wherein a collection of data groups is carried within specific time periods in the transmission frame, each of the data groups including known data sequences, signaling information and mobile service data, which comprise broadcast service data for a mobile broadcast system, wherein each of the data groups includes;

a first region in which the mobile service data is not multiplexed with main service data,

a second region including a first data segment in which K bytes of the main service data are multiplexed with the mobile service data, and

a third region including a second data segment in which M bytes of the main service data are multiplexed with the mobile service data, wherein K<

M,

wherein the first region is positioned between two regions of the second region and the first and second regions are positioned between two regions of the third region in each of the data groups,

wherein the collection of data groups carries the mobile service data encoded through a Reed-Solomon (RS) frame, and wherein the signaling information includes an RS code mode for the RS frame;

demodulating the received broadcast signal; and

building the RS frame including the mobile service data in the data groups and decoding the RS frame according to the RS code mode.