METHOD FOR TRANSMITTING BROADCAST SIGNALS AND METHOD FOR RECEIVING BROADCAST SIGNALS

• US 20180027306A1
• Filed: 09/21/2017
• Published: 01/25/2018
• 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 10,356,490 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 providing a broadcast content, comprising: receiving a broadcast content from an external input source, the broadcast content derived from a broadcast stream, wherein the broadcast content includes a plurality of watermarks carrying fragments of full watermark information, wherein the full watermark information includes first URL data and second URL data, the first URL data including signaling bits which identify a portion of a final URL, the second URL data including the rest of the final URL, wherein values of the signaling bits are pre-assigned to specific URL strings, wherein the full watermark information further includes type information and point information, the type information specifying type of a corresponding watermark, and the point information identifying where the corresponding watermark is embedded in the broadcast content; extracting the watermarks from the broadcast content; re-assembling the full watermark information using the watermarks.

Claims

1. A method of providing a broadcast content, comprising:

receiving a broadcast content from an external input source, the broadcast content derived from a broadcast stream, wherein the broadcast content includes a plurality of watermarks carrying fragments of full watermark information,

wherein the full watermark information includes first URL data and second URL data, the first URL data including signaling bits which identify a portion of a final URL, the second URL data including the rest of the final URL, wherein values of the signaling bits are pre-assigned to specific URL strings,

wherein the full watermark information further includes type information and point information, the type information specifying type of a corresponding watermark, and the point information identifying where the corresponding watermark is embedded in the broadcast content;

extracting the watermarks from the broadcast content;

re-assembling the full watermark information using the watermarks;

generating the final URL using the first URL data and the second URL data;

requesting supplementary information for the broadcast content to a server using the final URL; and

retrieving the supplementary information from the server.

2. The method of claim 1,

wherein the full watermark information further includes both a channel ID and a content ID, the channel ID identifying a broadcast service associated with the broadcast content, and the content ID identifying the broadcast content.

3. The method of claim 2,

wherein the channel ID includes a major channel number and a minor channel number, and

wherein the content ID is an EIDR (Entertainment Industry Data Registry).

4. The method of claim 1,

wherein a watermark of the watermarks includes a fragment number field and a last fragment field,

the fragment number field indicating a fragment number of a fragment carried in the watermark, and

the last fragment field indicating a fragment number of last fragment of the full watermark information to which the fragment carried in the watermark belongs.

5. A method for providing a broadcast content, comprising:

generating a broadcast content and full watermark information;

dividing the full watermark information into a plurality of fragments;

inserting a plurality of watermarks carrying the fragments into the broadcast content;

transmitting the broadcast content via a broadcast stream,

wherein the full watermark information includes first URL data and second URL data, the first URL data including signaling bits which identify a portion of a final URL, the second URL data including the rest of the final URL, wherein values of the signaling bits are pre-assigned to specific URL strings,

wherein the full watermark information further includes type information and point information, the type information specifying type of a corresponding watermark, and the point information identifying where the corresponding watermark is embedded in the broadcast content, and

wherein the full watermark information is re-assembled in a receiver by using the watermarks, and the final URL is to be generated by using the first URL data and the second URL data; and

delivering supplementary information for the broadcast content to the receiver upon a request.

6. The method of claim 5,

wherein the full watermark information includes both a channel ID and a content ID, the channel ID identifying a broadcast service associated with the broadcast content, and the content ID identifying the broadcast content.

7. The method of claim 6,

wherein the channel ID includes a major channel number and a minor channel number, and

wherein the content ID is an EIDR (Entertainment Industry Data Registry).

8. The method of claim 5,

wherein a watermark of the watermarks includes a fragment number field and a last fragment field,

the fragment number field indicating a fragment number of a fragment carried in the watermark, and

the last fragment field indicating a fragment number of last fragment of the full watermark information to which the fragment carried in the watermark belongs.