CN202455480U

CN202455480U - Digital watermark system for verifying digital television copyright

Info

Publication number: CN202455480U
Application number: CN2011205566296U
Authority: CN
Inventors: 曾泽君; 许胜武; 龚克宇; 易启鹏; 黄巍
Original assignee: Chengdu Doyen Information Technology Co Ltd
Current assignee: Chengdu Doyen Information Media Co., Ltd.
Priority date: 2011-12-28
Filing date: 2011-12-28
Publication date: 2012-09-26
Anticipated expiration: 2021-12-28

Abstract

The utility model discloses a digital watermark system for verifying a digital television copyright. The digital watermark system comprises a program operator side, a satellite network, a wired front end, a wired network, a user side, a digital watermark satellite receiver and a watermark monitoring side, wherein the digital watermark satellite receiver is used for receiving a satellite signal transmitted by the satellite network, decoding the satellite signal into a video signal, embedding a digital watermark comprising the ID (Identity) of a smart card of the satellite receiver into the video signal, and transmitting the video signal comprising the digital watermark to the wired front end; and the watermark monitoring side is used for receiving and monitoring digital television program contents from the wired network, and making an alarm if digital watermarks implied in the digital program contents are illegal.

Description

The digital watermarking system that is used for the DTV copyright authentication

Technical field

The utility model belongs to digital TV field, relates in particular to a kind of system that utilizes digital watermarking that the copyright of digital television program is verified.

Background technology

DTV is day by day accepted by users because of its controllable characteristics and is liked; Exactly because and storing of DTV such as can edit at characteristic; Make the digital television program copy right piracy serious day by day; Copyright protection to digital content of TV program is very urgent, and how effectively management has become the emphasis that program operator pays close attention to the control figure content of TV program.Program operator is transferred to ciphered program the satellite receiving equipment place of each local broadcasting stations via satellite, and this satellite receiving equipment for transparent program, then broadcasts the ciphered program deciphering in cable network separately.Some Virtual network operator is paid license fee in order to escape to program operator, might from other cable networks, steal certain program, joins in oneself the content to play.In order to alleviate this problem, the copyright control of existing program mainly adopts CA (Conditional Access) condition reception technique to protect, and be about to scrambling and encrypted content and broadcast, and each user side can only receive and decipher certain content.The fingerprint Display Technique is mainly adopted in evaluation to copyright; But because the fingerprint Display Technique needs program operator to send finger print information to national network or a certain Local Area Network; Can both see this finger print information in the national or regional network; Cause other user experiences not good, and it is difficult to trace Virtual network operator, the anti-piracy poor effect in historical facts or anecdotes border.

The utility model content

To the problems referred to above; The system that the purpose of the utility model is to provide a kind of digital watermarking that utilizes Virtual network operator that the copyright of digital television program is verified, thus the effect that the user of other networks watches do not influenced when reaching pirate source, quick location.

The above-mentioned purpose of the utility model reaches by the following technical programs: a kind of digital watermarking system that is used for the DTV copyright authentication; Comprise program operator end, satellite network, wired front end, cable network and user side, also comprise digital watermarking DVB and watermark monitoring side; Said digital watermarking DVB is used to receive the satellite-signal that satellite network transmits; And the deciphering of this satellite-signal is vision signal; The digital watermarking that will comprise this DVB smart card ID simultaneously is embedded in the vision signal, and the vision signal that will comprise digital watermarking at last sends to wired front end; Said watermark monitoring side is used to receive and monitor the digital television program content from cable network, if find that digital watermarking implicit in this digital program content is illegal, then alarms.

Further, said digital watermarking is translucent.Translucent watermark can not influence the user and watch.

The beneficial effect of the utility model is: the digital watermarking that will comprise this DVB smart card ID through the digital watermarking DVB is embedded in the vision signal; Monitor the digital watermarking of current digit content of TV program again by the watermark monitoring side; If find that this digital watermarking does not conform to rule and alarms, the purpose that pirate source reaches copyright authentication can be located fast based on digital watermarking by program operator thus; Digital watermarking is simultaneously only propagated in a cable network, can not have influence on other users.

Description of drawings

Fig. 1 is the modular structure sketch map of the utility model specific embodiment.

Embodiment

Disclosed all characteristics in this specification, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.

Disclosed arbitrary characteristic in this specification (comprising any claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.The description to alternative features is to being equal to the description of technical characterictic, must not being regarded as the donation to the public in this specification simultaneously.

Term in this specification (comprising any claim, summary and accompanying drawing) like no specified otherwise, all is defined as the peculiar implication in this area if having the peculiar implication of general sense and this area simultaneously.

Be illustrated in figure 1 as the modular structure sketch map of the utility model specific embodiment.The utility model is made up of program operator end, satellite network, digital watermarking DVB, wired front end, cable network, user side and watermark monitoring side.

Program operator end provides the digital television program content, and then network is broadcasted via satellite; The digital watermarking DVB receives the satellite-signal that satellite network transmits; And the deciphering of this satellite-signal is vision signal; The digital watermarking that will comprise this DVB smart card ID simultaneously is embedded in the vision signal, and the vision signal that will comprise digital watermarking at last sends to wired front end; Wired front end sends to each user side with the vision signal that this comprises digital watermarking through cable network; The watermark monitoring side receives and monitors the digital television program content from cable network, if find that digital watermarking implicit in this digital program content is illegal, then alarms.

So; After the alarm of watermark monitoring side; Program operator can read smart card ID through digital watermarking; Because a smart card ID has its particular network operator, so program operator can locate the Virtual network operator that copy right piracy takes place fast, program operator can be pirate this Virtual network operator of advisory of copyright; And the connection that requires this Virtual network operator to break off pirate cable network, thereby the abuse that can investigate Virtual network operator and pirate cable network reaches the purpose of protecting copyright.

Simultaneously because different digital watermarkings only to the network after the DVB, can not have influence on the user of other networks.According to an embodiment of the utility model, digital watermarking is translucent, can make the user experience better rating impression.

Claims

1. a digital watermarking system that is used for the DTV copyright authentication comprises program operator end, satellite network, wired front end, cable network and user side, it is characterized in that:

Also comprise digital watermarking DVB and watermark monitoring side;

Said digital watermarking DVB is used to receive the satellite-signal that satellite network transmits; And this satellite-signal is decoded as vision signal; The digital watermarking that will comprise this DVB smart card ID simultaneously is embedded in the vision signal, and the vision signal that will comprise digital watermarking at last sends to wired front end;

Said watermark monitoring side is used to receive and monitor the digital television program content from cable network, if find that digital watermarking implicit in this digital program content is illegal, then alarms.

2. according to the said digital watermarking system that is used for the DTV copyright authentication of claim 1, it is characterized in that:

Said digital watermarking is translucent.