METHOD FOR TRANSMITTING BROADCAST SIGNALS AND METHOD FOR RECEIVING BROADCAST SIGNALS

• US 20190320241A1
• Filed: 06/26/2019
• Published: 10/17/2019
• Est. Priority Date: 12/03/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: AN, Seungjoo, MOON, Kyoungsoo, LEE, Jinwon, KO, Woosuk, OH, Sejin, KANG, Donghyun, HONG, Sungryong
• Granted Patent: US 10,827,232 B2
• Time in Patent Office: Days
• CPC Class Codes: H04H 20/93 which locates resources of other pieces of information, e.g. URL [Uniform Resource Locator]
• CPC Class Codes: H04H 2201/50 characterised by the use of watermarks
• CPC Class Codes: H04H 60/13 Arrangements for device control affected by the broadcast information
• CPC Class Codes: H04N 21/2353 specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
• 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 21/23892 involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level
• CPC Class Codes: H04N 21/4126 The peripheral being portable, e.g. PDAs or mobile phones
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 21/8133 specifically related to the content, e.g. biography of the actors in a movie, detailed information about an article seen in a video program
• CPC Class Codes: H04N 21/8358 involving watermark protecting executable software by watermarking G06F21/16; image watermarking in general G06T1/0021; watermarks inserted in still images for transmission purposes H04N1/32144; inserting watermarks during video coding H04N19/467
• CPC Class Codes: H04N 21/8547 involving timestamps for synchronizing content
• CPC Class Codes: H04N 21/8586 by using a URL processing chained hypermedia data for information retrieval G06F16/94; information retrieval from the Internet by using URLs G06F16/955; URL in broadcast information H04H20/93; Web-based protocols H04L67/02

Abstract

A method of processing supplementary content in a digital receiver is discussed. The method includes connecting to an external input source being different from a broadcaster; receiving uncompressed A/V content from the external input source being different from the broadcaster; extracting audio watermark from the uncompressed A/V content; wherein the audio watermark includes domain type information, time information and event flag; constructing a first URL based on the domain type information, the time information and the event flag included in the audio watermark; transmitting an HTTP request to a remote server based on the first URL; receiving a second URL for the supplementary content from the remote server; and presenting the supplementary content based on the second URL.

Claims

1. A method of processing supplementary content in a digital receiver, the method comprising:

connecting to an external input source being different from a broadcaster;

receiving uncompressed A/V content from the external input source being different from the broadcaster;

extracting audio watermark from the uncompressed A/V content;

wherein the audio watermark includes domain type information, time information and event flag;

constructing a first URL based on the domain type information, the time information and the event flag included in the audio watermark;

transmitting an HTTP request to a remote server based on the first URL;

receiving a second URL for the supplementary content from the remote server; and

presenting the supplementary content based on the second URL.

2. The method of claim 1, wherein the digital receiver processes the supplementary content based on an automatic content recognition (ACR).

3. The method of claim 2, wherein the domain type information is used to identify a small domain or a large domain, the time information is used to identify an interval of content in which the audio watermark is embedded, and the event flag is used to signal when an event is available.

4. The method of claim 3, further comprising:

extracting video watermark from the uncompressed A/V content.

5. The method of claim 4, wherein the video watermark includes first URL data and second URL data, the first URL data includes signaling bits which identify a first portion of a final URL, wherein the second URL data includes a second portion of the final URL, wherein values of the signaling bits are pre-assigned to specific URL strings.

6. A digital receiver of processing supplementary content, the digital receiver comprising:

a first interface configured to connect to an external input source being different from a broadcaster, wherein the first interface is further configured to receive uncompressed A/V content from the external input source being different from the broadcaster; and

a controller configured to extract audio watermark from the uncompressed A/V content, wherein the audio watermark includes domain type information, time information and event flag,

wherein the controller is further configured to;

construct a first URL based on the domain type information, the time information and the event flag included in the audio watermark,

cause a second interface to transmit an HTTP request to a remote server based on the first URL,

cause the second interface to receive a second URL for the supplementary content from the remote server, and

cause a display module to present the supplementary content based on the second URL.

7. The digital receiver of claim 6, wherein the controller processes the supplementary content based on an automatic content recognition (ACR).

8. The digital receiver of claim 7, wherein the domain type information is used to identify a small domain or a large domain, the time information is used to identify an interval of content in which the audio watermark is embedded, and the event flag is used to signal when an event is available.

9. The digital receiver of claim 8, wherein the controller is further configured to extract video watermark from the uncompressed A/V content.

10. The digital receiver of claim 9, wherein the video watermark includes first URL data and second URL data, the first URL data includes signaling bits which identify a first portion of a final URL, wherein the second URL data includes a second portion of the final URL, wherein values of the signaling bits are pre-assigned to specific URL strings.