Broadcasting signal transmitting apparatus, broadcasting signal receiving apparatus, broadcasting signal transmitting method, and broadcasting signal receiving method

Patent metadata

Field	Value
Publication number	US-11228385-B2
Application number	US-202117155948-A
Country	US
Kind code	B2
Filing date	Jan 22, 2021
Priority date	Jul 21, 2015
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

A method for processing a broadcast service at a Primary Device (PD), and which includes performing a discovery process with a Companion Device (CD) application in a CD by receiving a discovery request from the CD and providing an endpoint for a WebSocket server of the PD; establishing a connection between the WebSocket server and the CD application based on the endpoint; in response to receiving a query for a current service from the CD, transmitting a response for the current service to the CD application based on the connection; receiving a broadcast signal having signaling information including flag information to obtain emergency data in the broadcast signal; and time de-interleaving Forward Error Correction (FEC) blocks including the emergency data based on a Time Interleaving (TI) block, wherein the FEC blocks are de-interleaved based on position for one or more virtual FEC blocks and the FEC blocks. In addition, the signaling information further includes information for a maximum number for the FEC blocks. The method also includes transmitting a notification message including the emergency data to the CD.

First claim

What is claimed is:

1. A method for processing a broadcast service at a Primary Device (PD), the method comprising:
performing, by a companion manager of the PD, a discovery process with a Companion Device (CD) application in a CD by receiving a discovery request from the CD and providing an endpoint for a WebSocket server of the PD;
handling, by the WebSocket server, a connection established by the CD application based on the endpoint;
in response to receiving a query for a current service from the CD, transmitting, by the WebSocket server, a response including information identifying the current service to the CD application based on the connection;
receiving, by a tuner, a broadcast signal having signaling information including flag information to obtain emergency data in the broadcast signal;
time de-interleaving, by a time de-interleaver, Forward Error Correction (FEC) blocks including the emergency data based on a Time Interleaving (TI) block,
wherein the FEC blocks are de-interleaved based on positions for the FEC blocks and one or more virtual FEC blocks that are skipped,
wherein the signaling information further includes information for a maximum number for the FEC blocks; and
transmitting, by the Websocket server, a notification message including the emergency data to the CD.

2. The method of claim 1 , wherein the response and the notification message are delivered with a JavaScript Object Notation (JSON) format.

3. The method of claim 1 , further comprising:
parsing a Service List Table (SLT) in the broadcast signal, the SLT providing information for discovering Service Layer Signaling (SLS); and
acquiring an electronic service guide (ESG) based on the SLT via: a broadcast network through a Real Time Delivery Over Unidirectional Transport (ROUTE) session, or a broadband by requesting an ESG fragment from an ESG server, the SLT including a signaling Uniform Resource Locator (URL) for the ESG server.

4. The method of claim 1 , further comprising:
in response to changing of the current service, transmitting a notification message for the changed current service to the CD application.

5. A device for processing a broadcast service, the device comprising:
a Companion Device (CD) manager that:
performs a discovery process with a CD application in a CD by receiving a discovery request from the CD and providing an endpoint for a WebSocket server of the device;
the Websocket server that handles a connection established by the CD application based on the endpoint;
a tuner that receives a broadcast signal having signaling information including flag information to obtain emergency data in the broadcast signal;
a time de-interleaver that performs time de-interleaving on Forward Error Correction (FEC) blocks including the emergency data based on a Time Interleaving (TI) block,
wherein the FEC blocks are de-interleaved based on positions for the FEC blocks and one or more virtual FEC blocks that are skipped,
wherein the signaling information further includes information for a maximum number for the FEC blocks,
wherein the Websocket server transmits a notification message including the emergency data to the CD, and
wherein the Websocket server further transmits a response including information identifying a current service to the CD application based on the connection in response to receiving a query for the current service from the CD.

6. The device of claim 5 , wherein the response and the notification message are delivered with a JavaScript Object Notation (JSON) format.

7. The device of claim 5 , further comprising:
a Service List Table parser configured to parse a Service List Table (SLT) in the broadcast signal to obtain an electronic service guide (ESG) based on the SLT via: a broadcast network through a Real Time Delivery Over Unidirectional Transport (ROUTE) session, or a broadband by requesting an ESG fragment from an ESG server, the SLT including a signaling Uniform Resource Locator (URL) for the ESG server, wherein the SLT providing information for discovering Service Layer Signaling (SLS).

8. The device of claim 5 , wherein the Websocket server further transmits a notification message for changed current service to the CD application in response to changing of the current service.

Assignees

• Lg Electronics Inc

Inventors

• Yang Seungryul
• Kwak Minsung
• Ko Woosuk
• Hong Sungryong
• Moon Kyoungsoo

Classifications

• H04L67/55

  Push-based network services · CPC title

• H04L67/51 Primary

  Discovery or management thereof, e.g. service location protocol [SLP] or web services · CPC title

• H04L67/02

  based on web technology, e.g. hypertext transfer protocol [HTTP] · CPC title

• H04L65/65

  Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP] · CPC title

• H04L65/611

  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 title