Digital broadcasting system and method of processing data in the digital broadcasting system

• US 10,091,009 B2
• Filed: 07/26/2016
• Issued: 10/02/2018
• Est. Priority Date: 08/24/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Jeong Woo, Choi, In Hwan, Lee, Chul Soo, Song, Jae Hyung, Park, Sang O
• Primary Examiner(s): Peng, Fred
• Application Number:
  US15/220,349
• Publication Number:
  US 20160337139A1
• Time in Patent Office: 798 Days
• CPC Class Codes: H04H 60/11 Arrangements for counter-measures when a portion of broadcast information is unavailable
• CPC Class Codes: H04L 1/0036 arrangements specific to the receiver
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04L 12/18 for broadcast or conference , e.g. multicast
• CPC Class Codes: H04L 2025/03382 Single of vestigal sideband
• CPC Class Codes: H04L 25/03203 Trellis search techniques
• CPC Class Codes: H04L 27/04 Modulator circuits; Transmitter circuits
• CPC Class Codes: H04L 45/16 Multipoint routing
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04N 1/0036 Alphanumeric symbols
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/40 Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
• CPC Class Codes: H04N 21/414 Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
• 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 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/61 Network physical structure; Signal processing H04B takes precedence
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006

Abstract

A broadcast transmitter and a method of processing broadcast data in the broadcast transmitter are disclosed. The method includes the steps of performing RS encoding and CRC encoding on mobile service data to build RS frames belonging to an ensemble, wherein each of the RS frames are mapped into data groups, wherein each of the data groups comprises known data sequences and a portion of FIC data including information for rapid mobile service acquisition, wherein the information for rapid mobile service acquisition includes transport stream identification information for identifying a mobile broadcast carrying a mobile service that includes the mobile service data and C/N indication information for indicating whether the FIC data are applicable to a current transmission frame or a next transmission frame, multiplexing data in the data groups and main service data, and transmitting a transmission frame including the multiplexed data.

Claims

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

Forward Error Correction (FEC) encoding media service data for a broadcast service;

forming first frames including the FEC-encoded media service data; and

transmitting a second frame including the first frames,

wherein the media service data includes first media data and second media data,

wherein both of the first media data and the second media data represent perceptually equivalent content for the broadcast service, but the first media data is coded differently from the second media data,

wherein the second frame includes first signaling information,

wherein the first signaling information includes information for seamless switching between the first media data and the second media data while presenting the equivalent content,

wherein the first signaling information further includes information for a relative time difference to compensate a presentation start time of the first media data or the second media data, and

wherein the second frame further includes second signaling information, the second signaling information including information for fast acquisition of the broadcast service.

2. The method of claim 1, wherein the first signaling information further includes:

location information specifying a location where the first media data or the second media data are provided,

wherein data groups in the first media data and the second media data are delivered during respective sequences of time intervals, and

wherein the first and second media data have respective start times in a common timeline.

3. The method of claim 2, wherein the first signaling information further includes:

sampling rate information specifying a sampling rate of the first media data or the second media data when the first media data or the second media data corresponds to audio data of the content.

4. The method of claim 3, wherein the first signaling information further includes:

type information specifying a media type of the first media data or the second media data.

5. A broadcast transmitter for processing data, the broadcast transmitter comprising:

a Forward Error Correction (FEC) encoder that encodes media service data for a broadcast service;

a frame generator that forms first frames including the FEC-encoded media service data; and

a transmitting device that transmits a second frame including the first frames,

wherein the media service data includes first media data and second media data,

wherein both of the first media data and the second media data represent perceptually equivalent content for the broadcast service, but the first media data is coded differently from the second media data,

wherein the second frame includes first signaling information

wherein the first signaling information includes information for seamless switching between the first media data and the second media data while presenting the equivalent content,

wherein the first signaling information further includes information for a relative time difference to compensate a presentation start time of the first media data or the second media data, and

wherein the second frame further includes second signaling information, the second signaling information including information for fast acquisition of the broadcast service.

6. The broadcast transmitter of claim 5, wherein the first signaling information further includes:

location information specifying a location where the first media data or the second media data are provided,

wherein data groups in the first media data and the second media data are delivered during respective sequences of time intervals, and

wherein the first and second media data have respective start times in a common timeline.

7. The broadcast transmitter of claim 6, wherein the first signaling information further includes:

sampling rate information specifying a sampling rate of the first media data or the second media data when the first media data or the second media data corresponds to audio data of the content.

8. The broadcast transmitter of claim 7, wherein the first signaling information further includes:

type information specifying a media type of the first media data or the second media data.