| 摘要 |
Processing arrangement for enhancing signal contours of a signal, having a transition zone between low-amplitude and high-amplitude areas, including a device for multiplexing the samples of the input signal processed during the duration of the transition zone and non-processed samples located outside said zone. This multiplexing device is preceded by a first non-processed input sample transfer path (1) and, parallel thereto, a second path (2) for transferring processed input samples, the second transfer path including: (1) a circuit (10, 20, 30) for calculating the derivative and the sign of the derivative of the input signal; (2) a normalization circuit (50, 60, 70, 80, 90, 100); (3) a transformation circuit (1) for replacing each output value x of the first multiplier by a numerical equivalent of a function f(x) if x is not higher than 1/2, or by a numerical equivalent of a function 1-F(1-x) when x is higher than 1/2; and (4) a denormalization circuit (120, 130, 140, 150).
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