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METHOD FOR PRODUCING A TELEVISION TRANSMISSION SIGNAL WITH ADDITIONAL INFORMATION AND DEVICE FOR SEPARATING THE ADDITIONAL INFORMATION FORM THE TELEVISION TRANSMISSION SIGNAL
METHOD FOR PRODUCING A TELEVISION TRANSMISSION SIGNAL WITH ADDITIONAL INFORMATION AND DEVICE FOR SEPARATING THE ADDITIONAL INFORMATION FORM THE TELEVISION TRANSMISSION SIGNAL
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机译:用附加信息产生电视传输信号的方法以及用于从电视传输信号中分离附加信息的装置
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摘要
The invention relates to a method for generating a television transmission signal containing additional information, comprising the following steps: a) digitization of the visual recording signal received; b) compression of the visual recording signal by a non-reversible compression method; c) decompression of the previously compressed visual recording signal; d) comparison of the visual signal thus obtained with the visual recording signal; at the same time, the microstructure of the visual recording signal eliminated during compression is detected; e) storage of digital user information and digital or digitized management information in the positions of the eliminated fine structure; at the same time, a transmission signal containing the user information is obtained; f) conversion of the digital transmission signal into an analog transmission signal. The invention also relates to a device for implementing this method, and for separating the additional information from the transmission signal.
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