DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM

• US 20140086230A1
• Filed: 11/27/2013
• Published: 03/27/2014
• Est. Priority Date: 08/24/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Chul Soo, CHOI, In Hwan, KWAK, Kook Yeon, KIM, Jin Woo, SONG, Jae Hyung, KIM, Jin Pil, SONG, Won Gyu, LEE, Hyoung Gon, KIM, Byoung Gill, SUH, Jong Yeul
• Granted Patent: US 9,154,817 B2
• Time in Patent Office: Days
• US Class Current: 370/345
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04L 1/0047 Decoding adapted to other signal detection operation in conjunction with sequence estimation or equalization H04L25/03286
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 27/02 Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation H04L27/32 takes precedence
• 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 21/4305 Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets arrangements for synchronising receiver with transmitter by comparing receiver clock with transmitter clock H04L7/0012; arrangements for synchronising receiver with transmitter wherein the receiver takes measures against momentary loss of synchronisation H04L7/0083
• 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
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A digital broadcasting system and a data processing method are disclosed. The data processing method includes receiving a broadcast signal in which main service data and mobile service data are multiplexed, demodulating the broadcast signal to acquire fast-information-channel signaling information including reference time information for a system clock, and outputting demodulation time information of a specific position of a frame of the broadcast signal, decoding the fast-information-channel signaling information, and establishing the reference time information as the system clock at a demodulation time according to on the outputted demodulation time information and decoding the mobile service data according to the system clock.

Claims

1. A method of transmitting a broadcast signal, the method comprising:

encoding broadcast data;

allocating the encoded broadcast data; and

transmitting a transmission frame including the encoded broadcast data,

wherein the transmission frame includes first signaling information having transmission parameters and second signaling information for a service acquisition,

wherein the transmission frame further includes a service signaling table to provide component level information for a service of the broadcast data, and

wherein the service signaling table includes a plurality of component level descriptors and a plurality of service level descriptors.

2. The method of claim 1, wherein the first signaling information and the second signaling information are encoded.

3. The method of claim 1, wherein the service signaling table further includes an identifier for identifying the service of the broadcast data.

4. The method of claim 1, wherein the service signaling table further includes an identifier for identifying the service signaling table.

5. The method of claim 1,

wherein the plurality of component level descriptors includes an audio descriptor for an audio component of the service, and

wherein the audio descriptor includes language information for specifying a language used by the audio component.

6. The method of claim 1, wherein the service signaling table further includes number information indicating a number of components of the service.

7. The method of claim 1, wherein the service signaling table further includes type information indicating a type of the service.

8. The method of claim 1,

wherein the service signaling table further includes status of the service, and

wherein the status of the service is active, inactive or hidden.

9. An apparatus for transmitting a broadcast signal, the apparatus comprising:

an encoder for encoding broadcast data; and

a transmission unit for allocating the encoded broadcast data and transmitting a transmission frame including the encoded broadcast data,

wherein the transmission frame includes first signaling information having transmission parameters and second signaling information for a service acquisition,

wherein the transmission frame further includes a service signaling table to provide component level information for a service of the broadcast data, and

wherein the service signaling table includes a plurality of component level descriptors and a plurality of service level descriptors.

10. The apparatus of claim 9, wherein the first signaling information and the second signaling information are encoded.

11. The apparatus of claim 9, wherein the service signaling table further includes an identifier for identifying the service of the broadcast data.

12. The apparatus of claim 9, wherein the service signaling table further includes an identifier for identifying the service signaling table.

13. The apparatus of claim 9,

wherein the plurality of component level descriptors includes an audio descriptor for an audio component of the service, and

wherein the audio descriptor includes language information for specifying a language used by the audio component.

14. The apparatus of claim 9, wherein the service signaling table further includes number information indicating a number of components of the service.

15. The apparatus of claim 9, wherein the service signaling table further includes type information indicating a type of the service.

16. The apparatus of claim 9,

wherein the service signaling table further includes status of the service, and

wherein the status of the service is active, inactive or hidden.