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    FREQUENCY CHARACTERISTICS IMPROVING CIRCUIT FOR CHROMINANCE SIGNAL
    141.
    发明专利
    FREQUENCY CHARACTERISTICS IMPROVING CIRCUIT FOR CHROMINANCE SIGNAL 失效

    公开(公告)号：JPS5511608A

    公开(公告)日：1980-01-26

    申请号：JP8372178

    申请日：1978-07-10

    Applicant: SONY CORP

    Inventor： TADA MASAHIRO ,  ISHIGAKI YOSHIO ,  OKADA TAKAFUMI ,  OOMORI SHIYOUJI

    IPC: H04N9/68

    Abstract: PURPOSE:To realize reduction of the delay elements in an extremely simple way and thus to simplify the circuit constitution by supplying the luminance signals to the control circuit immediately after the video detection. CONSTITUTION:The correct color correction is impossible unless a perfect agreement is obtained between color difference signal (R - Y)L - (B - Y)L, control signals XA-XC and luminance signal Y supplied to frequency characteristics improving circuit 100 for the chrominance signal. In this connection, both signal Y and signal (R - Y)L - (B - Y)L must be delayed by 2 sec. in accordance to the delay time (about 2 sec.) of signals XA-XC in case control circuit 40 is used. Here luminance signal SO obtained from video detection circuit 101 and right after the video detection is used for luminace signal Y which is to be supplied to circuit 40. At the same time, delay element 110 featuring the delay time of 1 sec. is provided at the transmission line of the detection output and at the front step of trap circuit 102 as well as delay element 104. As a result, the number of the delay elements can be decreased.

    FREQUENCY CHARACTERISTIC IMPROVING CIRCUIT FOR COLOR SIGNAL
    142.
    发明专利
    FREQUENCY CHARACTERISTIC IMPROVING CIRCUIT FOR COLOR SIGNAL 失效

    公开(公告)号：JPS5510289A

    公开(公告)日：1980-01-24

    申请号：JP8372078

    申请日：1978-07-10

    Applicant: SONY CORP

    Inventor： TADA MASAHIRO ,  ISHIGAKI YOSHIO ,  OKADA TAKAFUMI ,  OOMORI SHIYOUJI

    IPC: H04N9/68

    Abstract: PURPOSE:To make it possible to obtain a sharp regenerative screen with a blur of color removed by selecting either one of correction signals generated by two color correction circuits by a switching circuit controlled by two control signals. CONSTITUTION:Switching circuit 19 selects either one of correction signals generated independently by color correction circuits 10 and 20 and superposes it upon a color difference signal. In this case the 1st and 2nd control signals are generated and supplied to the control circuit 40 since circuit 40 selects correction signals; the 1st control signal is generated on the basis of the differentiation output of the low-band signal of luminance signal Y, and the 2nd control signal is on the basis of the integral output of the high-band signal of luminance signal Y and the differentiation output of a signal with a band narrower than that of the low-band signal. Consequently, a sharp regenerative screen can be obtained with a blur of color removed.

    ERCEIVER
    143.
    发明专利
    ERCEIVER 失效

    公开(公告)号：JPS54138321A

    公开(公告)日：1979-10-26

    申请号：JP4624378

    申请日：1978-04-19

    Applicant: SONY CORP

    Inventor： TADA MASAHIRO ,  OOUCHI KOUJI ,  TSURUMARU SHINOBU

    IPC: H01Q3/26 ,  H04N1/10

    Abstract: PURPOSE:To enable to match the phase of the both reception circuits with a simple constitution, by correcting the voltage fed to the channel selection filter of the second reception circuit with the voltage from the preset circuit, in performing the reception with the first and second reception circuits. CONSTITUTION:The output signal of the channel selection circuit 11 is fed to the transistors Tr13a...13n of the selecrion preset circuit 12, and Tr13 is provided with the potentiometers 14a...14n forming the tuning voltage of each channel. Further, the voltage from the meter 14 is fed to the channel selection filter of the reception circuit 2a and the local oscillator 3 through Tr 15. On the other hand, the voltage fed to the channel selection filter of the reception circuit 2b is corrected with the voltage from the preset circuit 17 for the voltage from the circuit 12. Thus, the phase of the reception circuits 2a and 2b can be made in agreement with each other with a simple constitution.

    TELEVISION RECEIVER FOR AUTOMOBILE
    144.
    发明专利
    TELEVISION RECEIVER FOR AUTOMOBILE 失效

    公开(公告)号：JPS54136225A

    公开(公告)日：1979-10-23

    申请号：JP4388878

    申请日：1978-04-14

    Applicant: SONY CORP

    Inventor： TADA MASAHIRO ,  OOUCHI KOUJI

    IPC: H04N5/52 ,  H04N5/50

    Abstract: PURPOSE:To sharpen the TV picture, by detecting the running speed of a mobile body, changing the time constant of AGC for the reception system with the detection signal, and preventing the flicker of automobile inder running. CONSTITUTION:The reception signal from the antennas 1a and 1b is picked up with the selection circuit 2 after selection and it is fed to the detection circuit 5 via the tuner 3 and the IF amplifier 4. Further, the output signal from the detection circuit 5 is fed to the peak detection circuit 7 to detect the level of the output signal, and this signal is fed to the time constant circuit 8. Further, the signal such as noise detected from the loop antenna 9 is fed to the time constant circuit 8 via the amplifier 10, wave shape circuit 11, and integration circuit 12. Further, the AGC signal from the time constant circuit 8 is fed to the level detection circuit 15 via the time constant circuit 14 to detect that the AGC signal is less than a given level, and this signal is fed to the FF circuit 16 and the control signal from the output of the circuit 16 is fed to the selection circuit 2, allowing to prevent the flicker caused by the running of automobile.

    PICTURE QUALITY IMPROVING SYSTEM FOR TELEVISION PICTURE
    145.
    发明专利
    PICTURE QUALITY IMPROVING SYSTEM FOR TELEVISION PICTURE 失效

    公开(公告)号：JPS5459025A

    公开(公告)日：1979-05-12

    申请号：JP12618877

    申请日：1977-10-20

    Applicant: SONY CORP

    Inventor： TADA MASAHIRO ,  NAKAGAWA TAKEYO ,  UTSUNOMIYA KIMITAKE

    IPC: H04N5/74 ,  H04N5/21

    Abstract: PURPOSE:To improve the TV picture quality lowered by piling of the unnecessary signals such as the ghost signals or the like, by projecting the pictures of the first and second cathode-ray tubes piled on each other onto the screen provided to oppose to the surfaces of the two cathode-ray tubes. CONSTITUTION:TV composite video signal 1 is supplied to first cathode-ray tube 54 via luminance signal amplifier 51, color signal circuit 52 and matrix circuit 53, and then undergoes waveform shaping 104 in accordance with the time difference between the main signal and the ghost signal to be then supplied to second cathode- ray tube 113 via lumnance signal amplifier 105, color signal circuit 106 and matrix circuit 107 respetively. Then lens 114 and 115 are distributed opposing to the surfaces of cathode-ray tube 54 and 113, and furthermore screen 116 is provided opposing to these lenses. The picture images are then projected on screen 116 in piling from tube 54 and 113 via lense 114 and 115. Thus, the both pictures are piled on each other on screen 116, and the deterioration of the picture quality caused by the unnecessary signals piled on the TV signal can be improved virtually.

    THREE COLORS SEPARATION OPTICAL APPARATUS
    146.
    发明专利
    THREE COLORS SEPARATION OPTICAL APPARATUS 失效

    公开(公告)号：JPS5448258A

    公开(公告)日：1979-04-16

    申请号：JP11430477

    申请日：1977-09-22

    Applicant: SONY CORP

    Inventor： TADA MASAHIRO ,  KOMURO SHIGEO

    IPC: G02B26/12 ,  G02B5/20 ,  G02B27/10 ,  H04N9/09 ,  H04N9/097

    Abstract: PURPOSE:To surely correct astigmatisms and make correction errors extremely small by disposing a second dichronic mirror in the posture turned 90 deg. about its incident optical axis with respect to a first dichronic mirror. CONSTITUTION:A first dichronic mirror 12 of red reflection formed on one side of a first parallel plane substrate 13 composed of a glass plate of a specified thickness (2t) and a second dichronic mirror 12 of blue reflection formed between second and third parallel plane substrates 15, 16 composed of respective glass plates of a thickness (t) are disposed in the posture wherein they are inclined by 45 deg. on the optical axis of the incident light being entered via image pickup lens 17, i.e., they are rotated by 90 deg. with respect to the first dichronic mirror about the second chronic mirror 8 and optical axis. Thereby, the astigmatisms produced in the first parallel plane substrate and the correction errors made extremely small.

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