| 摘要 |
<p>A method for identifying and diagnosing interferences in television signals, whether analogue or digital, in which, for each frequency, frequency interval (1, 2, 3, 4) or carrier wave (P 1 to P 9 ,...), there is a predetermined optimal level of a spectrum control variable (D, A), based on time (spectrum), such as for example, intensity, radiated power, MER, BER, etc. It consists of the following phases:
associating to each spectrum control variable level or value (no, n 1 , ..., n 4 ) a respective, standard determined value (c 0 , c 1 , ..., c 4 ) of a determined visible control characteristic;
graphically representing, for each time instant (t) and each frequency or frequency interval (1, 2, 3, 4), or for each carrier wave (P 1 to P 9 ,...), the value of the previous determined visible characteristic; and
determining the presence of an interference (D', D", A') when a discontinuity in the value of the previous determined visible characteristic is produced, giving rise to a new value (c 5 , c 6 , c 7 ) different to that of the expected standard determined visible characteristic (c 1 , c 1 , c 0' ).</p> |
