Broadcast signal transmitting apparatus, broadcast signal receiving apparatus, broadcast signal transmitting method and broadcast signal receiving method

Patent metadata

Field	Value
Publication number	US-2016337672-A1
Application number	US-201515110885-A
Country	US
Kind code	A1
Filing date	Apr 8, 2015
Priority date	Apr 18, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

Provided is a method for transmitting a broadcast signal. The method for transmitting a broadcast signal, according to the present invention, can be a broadcast content transmitting method, comprising the steps of: generating, by a first module, a first media stream for broadcast content wherein the first media stream includes a plurality of packets, and at least one of the packets includes time information; generating, by a second module, a second media stream for the broadcast content; transmitting, by a third module, the first media stream through a broadcast network; receiving, by a fourth module, a request for the second media stream from a receiver; and transmitting, by the fourth module, the second media stream to the receiver through the Internet network.

First claim

1 . A method for transmitting broadcast content, the method comprising:
generating a first media stream of broadcast content by a first module, the first media stream comprising a plurality of packets and at least one of the packets comprising time information; generating a second media stream of the broadcast content by a second module; transmitting the first media stream through a broadcast network by a third module; receiving a request for the second media stream from a receiver by a fourth module; and transmitting the second media stream to a receiver through the Internet by the fourth module.

2 . The method according to claim 1 , wherein:
the at least one packet comprises an extension header comprising the time information; and the time information comprises timestamp information indicating presentation time of the first media stream.

3 . The method according to claim 2 , wherein the extension header comprises only a portion of the timestamp.

4 . The method according to claim 2 , wherein the extension header further comprises timestamp information indicating presentation time of the second media stream.

5 . The method according to claim 2 , wherein the extension header further comprises information on suggested presentation delay up to consumption time from generating time of the first media stream.

6 . The method according to claim 5 , wherein the timestamp indicating presentation time of the first media stream indicates a presentation time value of the first media stream to which the suggested presentation delay is applied.

7 . The method according to claim 2 , wherein a payload of the at least one packet comprises first timeline reference information for configuring a timeline of the first media stream and second timeline reference information for configuring a timeline of the second media stream.

8 . The method according to claim 7 , wherein the payload of the at least one packet further comprises information on suggested presentation delay up to consumption time of generating time of the first media stream and the second media stream.

9 . The method according to claim 8 , wherein the first timeline reference information and the second timeline reference information have a value to which the suggested presentation delay is applied.

10 . The method according to claim 1 , wherein:
the first media stream is a video stream of the broadcast content; and the second media stream is an audio stream of the broadcast content.

11 . An apparatus for transmitting broadcast content, the apparatus comprising:
a first module configured to generate a first media stream of broadcast content, the first media stream comprising a plurality of packets and at least one of the packets comprising time information; a second module configured to generate a second media stream of the broadcast content; a third module configured to transmit the first media stream through a broadcast network; and a fourth module configured to receive a request for the second media stream from a receiver and to transmit the second media stream to a receiver through the Internet.

12 . The apparatus according to claim 11 , wherein:
the at least one packet comprises an extension header comprising the time information; and the time information comprises timestamp information indicating presentation time of the first media stream.

13 . The apparatus according to claim 12 , wherein the extension header comprises only a portion of the timestamp.

14 . The apparatus according to claim 12 , wherein the extension header further comprises timestamp information indicating presentation time of the second media stream.

15 . The apparatus according to claim 12 , wherein the extension header further comprises information on suggested presentation delay up to consumption time from generating time of the first media stream.

16 . The apparatus according to claim 15 , wherein the timestamp indicating presentation time of the first media stream indicates a presentation time value of the first media stream to which the suggested presentation delay is applied.

17 . The apparatus according to claim 12 , wherein a payload of the at least one packet comprises first timeline reference information for configuring a timeline of the first media stream and second timeline reference information for configuring a timeline of the second media stream.

18 . The apparatus according to claim 17 , wherein the payload of the at least one packet further comprises information on suggested presentation delay up to consumption time of generating time of the first media stream and the second media stream.

19 . The apparatus according to claim 18 , wherein the first timeline reference information and the second timeline reference information have a value to which the suggested presentation delay is applied.

20 . The apparatus according to claim 11 , wherein:
the first media stream is a video stream of the broadcast content; and the second media stream is an audio stream of the broadcast content.

Assignees

• Lg Electronics Inc

Inventors

• Lee Jangwon
• Oh Sejin
• Ko Woosuk
• Moon Kyoungsoo
• Hong Sungryong

Classifications

• H04L1/004

  by using forward error control (H04L1/0618 takes precedence; coding, decoding or code conversion, for error detection or correction H03M13/00) · CPC title

• H04B7/0413

  MIMO systems · CPC title

• H04N21/236

  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 title

• H04N21/2381 Primary

  Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network {(transmission of MPEG streams over ATM H04L12/5601)} · CPC title

• H04L1/0071

  Use of interleaving (interleaving per se H03M13/27) · CPC title