APPARATUS FOR TRANSMITTING BROADCAST SIGNAL, APPARATUS FOR RECEIVING BROADCAST SIGNAL, METHOD FOR TRANSMITTING BROADCAST SIGNAL AND METHOD FOR RECEIVING BROADCAST SIGNAL

• US 20170180077A1
• Filed: 11/20/2015
• Published: 06/22/2017
• Est. Priority Date: 11/20/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Jangwon, KWAK, Minsung, MOON, Kyoungsoo, KO, Woosuk, HONG, Sungryong
• Granted Patent: US 10,205,556 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0042 Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape H04L1/0067 takes precedence
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/236 Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream multiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• 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

Abstract

A method for generating and processing a broadcast signal according to an embodiment of the present invention includes encoding broadcast data for one or more broadcast services, encoding first level signaling information including information describing attributes of the one or more broadcast services, encoding second level signaling information including information for scanning the one or more broadcast services, and generating a broadcast signal including the broadcast data, the first level signaling information, and the second level signaling information, wherein the second level signaling information includes first capability information identifying capabilities needed to decode one or more pieces of broadcast content for the one or more broadcast services.

Claims

1-15. -15. (canceled)

16. A method for generating and processing a broadcast signal, the method comprising:

encoding broadcast data for one or more broadcast services;

encoding first level signaling information including information describing attributes of the one or more broadcast services;

encoding second level signaling information including information for scanning the one or more broadcast services;

FEC (Forward Error Correction) encoding the encoded broadcast data, the encoded first level signaling information and the encoded second level signaling information;

bit interleaving the FEC encoded broadcast data, the FEC encoded first level signaling information and the FEC encoded second level signaling information;

time interleaving the bit interleaved broadcast data, the bit interleaved first level signaling information and the bit interleaved second level signaling information;

mapping the time interleaved broadcast data, the time interleaved first level signaling information and the time interleaved second level signaling information into at least one signal frame; and

generating the broadcast signal including the at least one signal frame,

wherein the at least one signal frame includes third level signaling information configuring physical layer parameters,

wherein the second level signaling information includes first capability information identifying capabilities needed to decode and present a first broadcast content for all broadcast services described in the second level signaling information,

wherein the second level signaling information further includes service identifying information identifying a broadcast service of the one or more broadcast services, and

wherein the second level signaling information further includes second capability information identifying capabilities needed to decode and present a second broadcast content for the broadcast service identified by the service identifying information.

17. The method according to claim 16, wherein the first capability information identifies a media type of the first broadcast content.

18. The method according to claim 17, wherein the first capability information further identifies a download protocol used to download the first broadcast content.

19. The method according to claim 16, wherein the first level signaling information includes user service description (USD) information describing service layer properties of the broadcast service.

20. The method according to claim 19, wherein, if information indicated by the first capability information is different from information indicated by the second capability information, a priority is assigned to the second capability information.

21. The method according to claim 16, wherein the second level signaling information further includes physical layer pipe (PLP) identification information identifying a PLP transmitting the first level signaling information.

22. The method according to claim 21, wherein the second level signaling information further includes service category information identifying whether the broadcast service identified by the service identifying information corresponds to a linear service, an application service, or an electronic service guide (ESG) service.

23. A broadcast signal receiver comprising:

a broadcast signal receiver configured to receive a broadcast signal including at least one signal frame, wherein the at least one signal frame includes third level signaling information configuring physical layer parameters;

a parser configured to parse broadcast data, first level signaling information and second level signaling information from the at least one signal frame;

a time deinterleaver time configured to deinterleave the parsed broadcast data, the parsed first level signaling information and the parsed second level signaling information;

a bit deinterleaver bit configured to deinterleave the time deinterleaved broadcast data, the time deinterleaved first level signaling information and the time deinterleaved second level signaling information;

an FEC (Forward Error Correction) decoder configured to FEC decode the bit deinterleaved broadcast data, the bit deinterleaved first level signaling information and the bit deinterleaved second level signaling information;

a decoder configured to decode the second level signaling information including information for scanning one or more broadcast services, the first level signaling information including information describing attributes of the one or more broadcast services, and the broadcast data for the one or more broadcast services,

wherein the second level signaling information includes first capability information identifying capabilities needed to decode and present a first broadcast content for all broadcast services described in the second level signaling information,

wherein the second level signaling information further includes service identifying information identifying a broadcast service of the one or more broadcast services, and

wherein the second level signaling information further includes second capability information identifying capabilities needed to decode and present a second broadcast content for the broadcast service identified by the service identifying information; and

a processor configured to perform a control function to present the one or more broadcast services by using the second level signaling information and the first level signaling information.

24. The broadcast signal receiver according to claim 23, wherein the first capability information identifies a media type of the first broadcast content.

25. The broadcast signal receiver according to claim 24, wherein the first capability information further identifies a download protocol used to download the first broadcast content.

26. The broadcast signal receiver according to claim 23, wherein the first level signaling information includes user service description (USD) information describing service layer properties of the broadcast service.

27. The broadcast signal receiver according to claim 26, wherein, if information indicated by the first capability information is different from information indicated by the second capability information, a priority is assigned to the second capability information.

28. The broadcast signal receiver according to claim 23, wherein the second level signaling information further includes physical layer pipe (PLP) identification information identifying a PLP transmitting the first level signaling information.

29. The broadcast signal receiver according to claim 28, wherein the second level signaling information further includes service category information identifying whether the broadcast service identified by the service identifying information corresponds to a linear service, an application service, or an electronic service guide (ESG) service.

30. The broadcast signal receiver according to claim 23, wherein the processor generates a channel map and processes the one or more broadcast services related to the first capability information in the channel map only when capabilities needed in the receiver, indicated by the first capability information, is capability supported by the broadcast signal receiver.