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    TELEVISION SYSTEM
    1.
    发明专利
    TELEVISION SYSTEM 未知

    公开(公告)号：CA1026452A

    公开(公告)日：1978-02-14

    申请号：CA236486

    申请日：1975-09-26

    Applicant: SONY CORP

    Inventor： KATO YOSHIRO ,  FUJITA CHOICHI

    IPC: H04N5/91 ,  G11B20/02 ,  H04N5/44 ,  H04N5/765 ,  H04N5/775

    Abstract: A combination of a television receiver and a television signal recording and/or reproducing apparatus, such as a so-called video tape recorder, forming a television system for receiving, recording and/or reproducing television signals and displaying images thereof, wherein the television receiver portion contains two separate signal selecting and receiving circuitries each including a separately tunable tuner, an intermediate frequency stage and a detector stage, and specific television signals received by the respective circuitries are selectively applied by selecting switches in the television receiver portion to the display stage of the portion of the television receiver for display of images or to the portion of the signal recording and/or reproducing apparatus for recording.

    CONTOUR EMPHASIZING CIRCUIT
    3.
    发明专利
    CONTOUR EMPHASIZING CIRCUIT 失效

    公开(公告)号：JPH02121575A

    公开(公告)日：1990-05-09

    申请号：JP27480288

    申请日：1988-10-31

    Applicant: SONY CORP

    Inventor： USAMI MORIHISA ,  TOKUHARA MASAHARU ,  TERASAWA NAOMI ,  FUJITA CHOICHI

    IPC: H04N5/208

    Abstract: PURPOSE:To suppress a ringing or noise component that deteriorates the picture quality by providing a non-linear circuit having core ring characteristics and clipping characteristics in the low and high level areas of an input signal respectively into a secondary differentiating circuit. CONSTITUTION:A contour emphasizing signal generating circuit consists of a differentiating circuit 10, a polarity inversion amplifier 11, a level control variable amplifier 12, a non-linear amplifier 13, and a differentiating circuit 14 which are connected in series. The output of the circuit is connected to an addition circuit 15, and the output of the circuit 15 is connected to a terminal 2. The amplifier 13 has the 5-broken line characteristics whose gains are reduced in the low and high level areas of an input signal. Thus the amplifier 13 amplifies only the signal components set within a prescribed level range of a primary differential signal B and suppresses the ringing, the noises, and the excessive component that cause the deterioration of picture quality of a video receiver.

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