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Program monitoring management system based on digital water-print and two-way top-set box

A two-way set-top box, digital watermarking technology, which is applied in the components of TV systems, digital video signal modification, analog security/charging system, etc. rate surveys, etc.

Inactive Publication Date: 2007-10-03
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this instrument can't really do the ratings survey on specific program content, nor can it be used in the future digital TV broadcasting environment
In addition, based on the digital TV broadcasting environment, there is a technology to complete the audience rating survey by recording the content of the information table in the transport stream, but this technology still cannot really complete the program monitoring and management at the content level

Method used

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  • Program monitoring management system based on digital water-print and two-way top-set box
  • Program monitoring management system based on digital water-print and two-way top-set box
  • Program monitoring management system based on digital water-print and two-way top-set box

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Embodiment Construction

[0037] We define an eight-bit binary sequence as the program number identification, one of which is used to indicate the watermark information embedded in the first frame and the end frame. Then the 8-bit sequence can identify 128 different programs in total. Suppose the identification sequence "10110010" "10110011", where the last bit "0" or "1" of the sequence represents the watermark information of the first frame and the last frame respectively. Afterwards, 128-bit pseudo-random sequence is used for spread spectrum modulation to generate the watermark sequence for embedding operation. Referring to Figure 2, the process of embedding digital watermark in the program stream:

[0038] 1. Generate the watermark information W to be embedded from the basic watermark information sequence A representing the program number through the spread-spectrum modulation of the pseudo-machine sequence Z. The last bit of information in the sequence A is used to identify the first frame or th...

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Abstract

This invention utilizes digital watermark technology to identify program content and test and process the digital watermark information inserted into a specific program of a 2-way set-top box to finish collection of owners of copyright, the play time and length, then a back-transfer module finishes the transfer of information from the box to the front system to finish further data process, which can also finish the control to the box and the watermark test module by a dual channel.

Description

technical field [0001] The invention relates to the field of digital television broadcasting, in particular to a program monitoring and management system based on digital watermarks and two-way set-top boxes. Background technique [0002] Digital TV is a new technology of broadcasting TV, which uses digital signals instead of analog signals to broadcast TV programs. Compared with the analog cable TV system, one of the main differences in transmission is that one frequency point in the analog cable TV system only broadcasts one set of analog TV program signals, while one frequency point in the digital TV system can broadcast multiple sets of multiplexed digital signals. TV program signal. In a digital TV system, users need to use a set-top box (STB: Set Top Box) to receive digital TV programs broadcast by the headend. STB is also called Integrated Receive Decoder (IRD, Integrated Receive Decoder). Its main function is to convert the received digital TV signal into analog TV...

Claims

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Application Information

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IPC IPC(8): H04N7/167H04N7/16H04N7/30H04N7/26H04N5/00H04N19/467H04N21/2389H04N21/24H04N21/8358
Inventor 季伟孙建德刘琚崔卫庄文君
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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