Compression and expansion of amplitude modulated signals

摘要

The compression and expansion of amplitude modulated signals is used for at least two signals one of which can be an amplitude modulated signal and the other additional data. The information is multiplied by a factor and is rounded off. In the first and second image points of each line will be two calibration signals that allow the decoding to be to the correct format. In one version signals (a, b) are to be transmitted and each are multiplied by different factors and are summed followed by calibration pulse values selected in the signal range.