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    TELEVISION PICTURE RECEIVER
    51.
    发明专利
    TELEVISION PICTURE RECEIVER 失效

    公开(公告)号：JPS54118129A

    公开(公告)日：1979-09-13

    申请号：JP2503978

    申请日：1978-03-07

    Applicant: SONY CORP

    Inventor： ISHIGAKI YOSHIO ,  OKADA TAKAFUMI ,  KURIKI CHIYOUEI

    IPC: H04N3/34

    Abstract: PURPOSE:To reduce the coarseness of the raster without lowering the vertical resolution as well as to enhance the picture quality by giving the micro-oscillation to the electron beam of the cathode-ray tube in the vertical direction for the TV picture receiver. CONSTITUTION:The reception video signal is supplied to cathode-ray tube 14 from signal input terminal 10 and then directly to 1st input terminal 15a of level comparator 15 in interrelation detector circuit 11 as well as to 2nd input terminal 15b via delay circuit 16. Circuit 16 features the delay characteristics to supply the delay time identical to one horizontal scanning period to the reception video signal, and comparator 15 performs the level comparison between the original signal and the delay signal supplied to terminal 15a and 15b. The micro-oscillation signal supplied from oscillator circuit 12 receives the amplitude modulation via modulator circuit 13, and the modulation output signal from circuit 13 is supplied to the wobbling deflecting coil of tube 14 to give the micro-oscillation to the electron beam in the vertical direction.

    SIGNAL PROCESSING CIRCUIT
    52.
    发明专利
    SIGNAL PROCESSING CIRCUIT 失效

    公开(公告)号：JPS5470021A

    公开(公告)日：1979-06-05

    申请号：JP13679977

    申请日：1977-11-15

    Applicant: SONY CORP

    Inventor： OKADA TAKAFUMI ,  NIIMURA TSUTOMU ,  TSUCHIYA TAKAHISA ,  KUNIYOSHI YASUNOBU

    IPC: H04N9/793 ,  G11B5/027 ,  H04N9/83

    Abstract: PURPOSE:To well control color signal levels constant with a simple circuit constitution by processing the color signals in video signal by using ACC circuit and frequency conversion circuit for both recording and reproducing. CONSTITUTION:At the recording, the color signals having passed through a BPF 13, ACC circuit 13 and switch 32 are supplied to a phase comparator 33 to which the oscillation output of an oscillator 34 is applied. The phase compared outputs therefrom are applied to the oscillator 34, the oscillation outputs having been locked to the phases of the color signals whereof are then applied to a frequency conversion circuit 14. This cuases the burst color signal levels to be controlled to a constant level in a circuit 13 via phase detection circuit 43 and to be applied to heads after having been undergone low frequency level conversion by the frequency conversion circuit 14. At the reproducing, the color signals having passed through the circuits 13, 14, switch 32 are applied to the comparator 33 and at the same time the frequency divided signal of the reproduced horizontal synchronizing signal is applied to a comparator 38. According to both comparison outputs, the phase of the oscillator 39 is clocked, whereby high frequency range conversion is accomplished. Hence, the ACC circuit and frequency conversion circuit are used for both recording and reproducing, whereby the color signal processing circuits are simplified.

    VIDEO SIGNAL TRANSMITTER
    53.
    发明专利
    VIDEO SIGNAL TRANSMITTER 失效

    公开(公告)号：JPS53141007A

    公开(公告)日：1978-12-08

    申请号：JP5564477

    申请日：1977-05-14

    Applicant: SONY CORP

    Inventor： OKADA TAKAFUMI

    IPC: H04N5/92 ,  G11B5/027 ,  G11B20/02 ,  G11B20/06 ,  H04N9/83

    Abstract: PURPOSE:To increase the SN ratio of video signal by converting one signal so that the high frequency component derived from the video signal makes frequency interleaving with the original video signal, superposing both signals to intensify the high frequency component then transmitting the signal.

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