# US 2021/0344734 A1 · Apparatuses and methods for transmitting or receiving a broadcast content via one or more networks

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- Number: US 2021/0344734 A1
- Document ID: US20210344734A1
- Status: Published application
- Kind: A1
- Application number: 17/368,431
- Filed: 2021-07-06
- Published: 2021-11-04
- Earliest claimed: 2014-01-13
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Sejin OH; Jangwon LEE; Woosuk KO; Sungryong HONG; Woosuk KWON; Kyoungsoo MOON
- Web page: https://patentgrep.com/patent/US20210344734A1

## CPC

- 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)}
- H04H 20/18: Arrangements for synchronising broadcast or distribution via plural systems
- H04H 60/82: the transmission system being the Internet
- 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)
- H04L 65/65: Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
- H04L 67/02: based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L 69/18: Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
- H04L 69/28: Timers or timing mechanisms used in protocols
- H04N 21/2362: Generation or processing of Service Information [SI]
- 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)}
- 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)
- H04N 21/242: Synchronisation processes, e.g. processing of PCR [Programme Clock References] {(arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18)}
- H04N 21/6437: Real-time Transport Protocol [RTP]
- H04N 21/64707: {for transferring content from a first network to a second network, e.g. between IP and wireless}
- H04N 21/8456: {by decomposing the content in the time domain, e.g. in time segments}
- H04N 21/85403: {by describing the content as an MPEG-21 Digital Item}
- H04N 21/8547: involving timestamps for synchronizing content
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04H: BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A digital receiver for synchronizing multiple components delivered on a broadband network and a broadcast network, the digital receiver including a broadband network interface configured to receive broadband data including at least one audio component for a service via the broadband network, wherein the at least one audio component relates to a Dynamic Adaptive Streaming over HTTP (DASH) segment, wherein the broadband network comprises an internet network; a broadcast network interface configured to receive a broadcast signal including a video component for the service, first timing information, and second timing information via the broadcast network, wherein the broadcast signal further includes a MPD (Media Presentation Description) having a DASH representation containing a segment URL for the DASH segment delivered over the broadband network; and a processor configured to calculate an offset based on a receiver wall clock, and process at least one of the at least one audio component or the video component which is time-aligned based on the calculated offset.

## Claims

### Claim 1

A digital receiver for synchronizing multiple components delivered on a broadband network and a broadcast network, the digital receiver comprising:
a broadband network interface configured to receive broadband data including at least one audio component for a service via the broadband network, wherein the at least one audio component relates to a Dynamic Adaptive Streaming over HTTP (DASH) segment,
wherein the broadband network comprises an internee network;
a broadcast network interface configured to receive a broadcast signal including a video component for the service, first timing information, and second timing information via the broadcast network, wherein the broadcast signal further includes a MPD (Media Presentation Description) having a DASH representation containing a segment URL for the DASH segment delivered over the broadband network; and
a processor configured to calculate an offset based on a receiver wall clock, and process at least one of the at least one audio component or the video component which is time-aligned based on the calculated offset.

### Claim 2 (depends on 1)

The digital receiver of claim 1, wherein the first timing information and the second timing information are included in an adaptation set level or a representation level of DASH MPD.

### Claim 3 (depends on 2)

The digital receiver of claim 2, wherein the DASH segment is generated based on an ISO BMFF (Base Media File Format).

### Claim 4 (depends on 3)

The digital receiver of claim 3, wherein the service is a collection of continuous media components.

### Claim 5 (depends on 4)

The digital receiver of claim 4, wherein the digital receiver comprises a television or a set top box.

### Claim 6

A method for synchronizing multiple components delivered on a broadband network and a broadcast network in a digital receiver, the method comprising:
receiving, by the receiver, broadband data including at least one audio component for a service via the broadband network, wherein the at least one audio component relates to a Dynamic Adaptive Streaming over HTTP (DASH) segment,
wherein the broadband network comprises an internet network;
receiving, by the receiver, a broadcast signal including a video component for the service, first timing information, and second timing information via the broadcast network, wherein the broadcast signal further includes a MPD (Media Presentation Description) having a DASH representation containing a segment URL for the DASH segment delivered over the broadband network;
calculating an offset based on a receiver wall clock; and
processing at least one of the at least one audio component or the video component which is time-aligned based on the calculated offset.

### Claim 7 (depends on 6)

The method of claim 6, wherein the first timing information and the second timing information are included in an adaptation set level or a representation level of DASH MPD.

### Claim 8 (depends on 7)

The method of claim 7, wherein the DASH segment is generated based on an ISO BMFF (Base Media File Format).

### Claim 9 (depends on 8)

The method of claim 8, wherein the service is a collection of continuous media components.

### Claim 10 (depends on 9)

The method of claim 9, wherein the digital receiver comprises a television or a set top box.

### Claim 11

A digital transmitter for transmitting multiple components via a broadband network and a broadcast network, the digital transmitter comprising:
a broadband network interface configured to transmit broadband data including at least one audio component for a service via the broadband network, wherein the at least one audio component relates to a Dynamic Adaptive Streaming over HTTP (DASH) segment,
wherein the broadband network comprises an internet network; and
a broadcast network interface configured to transmit a broadcast signal including a video component for the service, first timing information, and second timing information via the broadcast network, wherein the broadcast signal further includes a MPD (Media Presentation Description) having a DASH representation containing a segment URL for the DASH segment delivered over the broadband network.

### Claim 12 (depends on 11)

The digital transmitter of claim 11, wherein the first timing information and the second timing information are included in an adaptation set level or a representation level of DASH MPD.

### Claim 13 (depends on 12)

The digital transmitter of claim 12, wherein the DASH segment is generated based on an ISO BMFF (Base Media File Format).

### Claim 14 (depends on 13)

The digital transmitter of claim 13, wherein the service is a collection of continuous media components.

### Claim 15

A method for transmitting multiple components delivered on a broadband network and a broadcast network in a digital transmitter, the method comprising:
transmitting broadband data including at least one audio component for a service via the broadband network, wherein the at least one audio component relates to a Dynamic Adaptive Streaming over HTTP (DASH) segment,
wherein the broadband network comprises an internet network; and
transmitting a broadcast signal including a video component for the service, first timing information, and second timing information via the broadcast network, wherein the broadcast signal further includes a MPD (Media Presentation Description) having a DASH representation containing a segment URL for the DASH segment delivered over the broadband network.

### Claim 16 (depends on 15)

The method of claim 15, wherein the first timing information and the second timing information are included in an adaptation set level or a representation level of DASH MPD.

### Claim 17 (depends on 16)

The method of claim 16, wherein the DASH segment is generated based on an ISO BMFF (Base Media File Format).

### Claim 18 (depends on 17)

The method of claim 17, wherein the service is a collection of continuous media components.