Digital broadcasting system and data processing method

• US 8,307,400 B2
• Filed: 01/26/2012
• Issued: 11/06/2012
• Est. Priority Date: 07/29/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Song, Jae Hyung, Choi, In Hwan, Suh, Jong Yeul, Kim, Jin Pil, Lee, Chul Soo
• Primary Examiner(s): Pendleton, Brian
• Assistant Examiner(s): Lin, Jason K
• Application Number:
  US13/359,426
• Publication Number:
  US 20120121035A1
• Time in Patent Office: 285 Days
• Field of Search: None
• US Class Current: 725/62
• CPC Class Codes: H04H 60/73 using meta-information

Abstract

A method of processing data in a transmitter includes separating ensembles including mobile service data; building a Reed-Solomon (RS) frame including the mobile service data, dividing the built RS frame into RS frame portions; encoding signaling data including fast information channel (FIC) data including cross layer information for mobile service acquisition and transport parameter channel (TPC) data including FIC version information for identifying an update of the FIC data, wherein the TPC data is RS-encoded at a first code rate, and the FIC data is block-interleaved after being RS-encoded at a second code rate; forming a data group including data of an RS frame portion and the signaling data; and transmitting a broadcast signal including the formed data group.

Claims

1. A method of processing data in a transmitter, the method comprising:

separating ensembles including mobile service data;

building a Reed-Solomon (RS) frame including the mobile service data, wherein building the RS frame comprises;

performing RS encoding for each of a plurality of columns of a payload of the RS frame; and

adding cyclic redundancy check (CRC) data to the RS encoded payload of the RS frame;

dividing the built RS frame into RS frame portions;

encoding signaling data including fast information channel (FIC) data including cross layer information for mobile service acquisition and transport parameter channel (TPC) data including FIC version information for identifying an update of the FIC data, wherein the TPC data is RS-encoded at a first code rate, and the FIC data is block-interleaved after being RS-encoded at a second code rate, and wherein the TPC data is not included in the FIC data;

forming a data group including data of an RS frame portion and the signaling data;

transmitting a broadcast signal including the formed data group, wherein the ensemble is carried through a parade, the parade being a collection of data groups and the TPC data further includes information for a parade repetition cycle which represents a number of frames which do not contain a current parade and which are between frames that contain the current parade, and

wherein the TPC data is included in each of the data groups belonging to the parade and same information for the parade repetition cycle is transmitted repeatedly through the data groups of the parade.

2. The method of claim 1, wherein each of the ensembles includes a service map table (SMT), the SMT including access information of each mobile service included in the ensemble and service type information identifying a category of each mobile service.

3. The method of claim 1, wherein the TPC data further includes a parade identifier identifying the parade to which the data group belongs.

4. The method of claim 3, wherein the SMT includes an ensemble identifier identifying an ensemble, wherein the ensemble identifier is derived from the parade identifier.

5. An apparatus for processing data in a transmitter, the apparatus comprising:

a demultiplexer configured to separate ensembles including mobile service data;

a Reed-Solomon-cyclic rudimentary check (RS-CRC) encoder configured to;

build a Reed-Solomon (RS) frame including the mobile service data;

perform RS encoding for each of a plurality of columns of a payload of the RS frame; and

add cyclic redundancy check (CRC) data to the RS encoded payload of the RS frame;

an RS frame divider configured to divide the built RS frame into RS frame portions;

a signaling encoder configured to encode signaling data including fast information channel (FIC) data including cross layer information for mobile service acquisition and transport parameter channel (TPC) data including FIC version information for identifying an update of the FIC data, wherein the TPC data is RS-encoded at a first code rate, and the FIC data is block-interleaved after being RS-encoded at a second code rate, and wherein the TPC data is not included in the FIC data;

a group formatter configured to form a data group including data of an RS frame portion and the signaling data;

a transmission unit configured to transmit a broadcast signal including the formed data group,

wherein the ensemble is carried through a parade, the parade being a collection of data groups and the TPC data further includes information for a parade repetition cycle which represents a number of frames which do not contain a current parade and which are between frames that contain the current parade, and

wherein the TPC data is included in each of the data groups belonging to the parade and same information for the parade repetition cycle is transmitted repeatedly through the data groups of the parade.

6. The apparatus of claim 5, wherein each of the ensembles includes a service map table (SMT), the SMT including access information of each mobile service included in the ensemble and service type information identifying a category of each mobile service.

7. The apparatus of claim 5, wherein the TPC data further includes a parade identifier identifying the parade to which the data group belongs.

8. The apparatus of claim 7, wherein the SMT includes an ensemble identifier identifying an ensemble, wherein the ensemble identifier is derived from the parade identifier.