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Apparatus for compensating contour of television signal

  • US 4,912,556 A
  • Filed: 02/23/1989
  • Issued: 03/27/1990
  • Est. Priority Date: 08/28/1986
  • Status: Expired due to Fees
First Claim
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1. An apparatus for compensating a contour of a television signal in an apparatus for processing a television signal in which a predetermined control signal including at least a field interpolation control signal to control an interpolating method when reconstructing by an interpolation an image signal which was band compressed by executing a sub-Nyquist sampling is time sharingly multiplexed for a blanking period, said compensating apparatus comprising:

  • an animation image system processing circuit to process an animation area of an input image signal;

    a still image system processing circuit to process a still area;

    a mixing circuit to mix output signals of both of said processing circuits;

    a movement amount detecting circuit to generate a movement amount signal to change a mixture ratio in said mixing circuit in accordance with a movement;

    a binarizing circuit for receiving the movement amount signal as an output of said movement amount detecting circuit and binarizing;

    a two-dimensional contour compensating circuit for receiving an output of the mixing circuit as an input signal and for two-dimensionally emphasizing a contour of an image; and

    a switch for selecting either one of the output signal of the mixing circuit and an output signal of said two-dimensional contour compensating circuit on the basis of an OR of an output signal of said binarizing circuit and the field interpolation control signal which is transmitted by being multiplexed to the image signal from the transmission side.

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