专利汇可以提供Edge detecting circuit专利检索,专利查询,专利分析的服务。并且PURPOSE: To discriminate a high frequency component in a signal from an edge by generating a reference level signal by using a full-wave rectifier circuit and an integration circuit, and comparing it with an amplitude comparator.
CONSTITUTION: Adders 1 and 4, delay elements 2 and 6, the full-wave rectifier 3, coefficient multipliers 5 and 7, the amplitude comparator 8, a differentiation circuit 11, and the integration circuit 12 are provided. An input signal is the one in which a high frequency sine wave small in amplitude is unified with a rectangular wave large in amplitude, and the output A of the differentiation circuit 11 is a synthetic waveform synthesizing an impulse in which the edge of the rectangular wave is differentiated and a sine wave. A waveform B full- wave rectifying the waveform A becomes a signal of single polarity, and a synthetic waveform C synthesizing a DC level signal corresponding to the amplitude of an input sine wave and the waveform in which the impulse is integrated can be obtained. The waveform C is set as the reference level signal, and it is compared with the waveform B by the comparator 8. At such a case, only the edge component can be detected by setting the parameters (a) and (b) of an integrator appropriately even when the high frequency component and the edge are included in an input signal.
COPYRIGHT: (C)1990,JPO&Japio,下面是Edge detecting circuit专利的具体信息内容。
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