| 摘要 |
A signal processor for extracting chrominance information from a composite video signal has transversal filters (45, 46) developing first and second signals (A and B). A look-up table (47) generates a control signal (C) which is a non-linear function of the ratio A/B and simultaneously develops the product B*C. A filter of this form can combine steep frequency response with minimal degradation of the response to pulses.
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