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    COLOR SATURATION AND CONTRAST CONTROL CIRCUITRY RESPONSIVE TO AMBIENT LIGHT
    1.
    发明专利
    COLOR SATURATION AND CONTRAST CONTROL CIRCUITRY RESPONSIVE TO AMBIENT LIGHT 未知

    公开(公告)号：CA1049137A

    公开(公告)日：1979-02-20

    申请号：CA226967

    申请日：1975-05-14

    Applicant: SONY CORP

    Inventor： NAGAI KUNIO ,  AKUTAGAWA TOORU

    IPC: H04N5/58 ,  H04N9/68 ,  H04N9/12

    Abstract: An control circuit used in a color television receiver for controlling a reproduced picture in response to an ambient light level has a photo-sensitive device, a transistor a base electrode of which is connected to the photo-sen-sitive device, a variable resistor connected to the transistor in series a voltage controlled contrast control circuit and a voltage controlled color saturation control circuit both controlled by a control voltage obtained at a movable contact of said variable resistor commonly, a switch connected to the transistor in parallel which is closed in a manual condition.

    SIGNAL TRANSLATING CIRCUITS
    2.
    发明专利
    SIGNAL TRANSLATING CIRCUITS 未知

    公开(公告)号：CA1214269A

    公开(公告)日：1986-11-18

    申请号：CA443842

    申请日：1983-12-20

    Applicant: SONY CORP

    Inventor： AKUTAGAWA TOORU ,  MACHIDA YUKIHIKO

    IPC: H03F3/34 ,  G11B5/027 ,  G11B5/03 ,  H01L27/02 ,  G11B5/008 ,  H03F1/34

    Abstract: SIGNAL TRANSLATING CIRCUITS A signal translating circuit comprises first and second transistors connected to each other in such a manner that a collector of the first transistor is coupled with a base of the second transistor and an emitter of the second transistor is coupled with a base of the first transistor so as to form a negative feedback circuit arrangement, an input resistor connected between the base of the first transistor and a source of an input voltage signal for converting the input voltage signal into an input current signal to be supplied to the base of the first transistor, a biasing current source connected to the base of the first transistor, first and second current sources supplying with the same currents and connected to the emitter of the first transistor and a collector of the second transistor, respectively, and means for deriving an output current signal from the collector of the second transistor.

    COLOR TEMPERATURE CONTROL DEVICE FOR IMAGE RECEIVING TUBE
    5.
    发明专利
    COLOR TEMPERATURE CONTROL DEVICE FOR IMAGE RECEIVING TUBE 失效

    公开(公告)号：JPS56112191A

    公开(公告)日：1981-09-04

    申请号：JP1536480

    申请日：1980-02-08

    Applicant: SONY CORP

    Inventor： AKUTAGAWA TOORU ,  OKADA TAKAFUMI ,  TANAKA YUTAKA

    IPC: H04N9/73

    Abstract: PURPOSE:To prevent deterioration of pulse characteristic and generation of color smear by inserting a circuit, in which blue primary signal voltage becomes larger than red primary signal voltage when the ratio of input to output is located on the white level side more than a certain specified level, into the front stage of a video output circuit and controlling color temperature so as to have desired characteristic. CONSTITUTION:Red, green and blue primary signal voltage outputted from color decoder 10 is added to the bases of transistors TRQR, QG and QB through resistance RXR, RXG and RXB of linear or nonlinear circuit 40. The output of TRQR, QG and QB is supplied to video output circuit 20 through drive adjusting volumes RDR, RDG and RDB. The bases of TRQR and QG are connected with the emitter of TRQO through the series circuit consisting of resistance RYR and RYG and diodes DR and DG and voltage VO is applied to the base of TRQO. When red and green primary signal voltage is higher than level VO, a blue primary signal is extended and the color temperature of image receiving tube 30 is controlled to desired characteristic, preventing the generation of color smear.

    Amplifier circuit device of video tape recorder
    6.
    发明专利
    Amplifier circuit device of video tape recorder 失效
    视频磁带记录仪的放大器电路设备

    公开(公告)号：JPS59127204A

    公开(公告)日：1984-07-23

    申请号：JP23424982

    申请日：1982-12-30

    Applicant: Sony Corp

    Inventor： AKUTAGAWA TOORU ,  MACHIDA MASAHIKO

    IPC: G11B5/027 ,  G11B20/24

    CPC classification number: G11B20/24

    Abstract: PURPOSE:To eliminate the need for an electronic switch which connects and disconnects a resistance for dubbing and a bias power source for dubbing by connecting the series circuit of a resistance and a capacitor between the input terminal and output terminal of a recording amplifier circuit, and feeding back the output of the recording amplifier circuit negatively. CONSTITUTION:When the output terminal 22 of the recording amplifier circuit 11 and the input terminal 23 of a regenerative amplifier circuit 12 are connected to a rotary head 34 through a rotary transformer 33 without the intervention of a changeover switch, dubbing is performed so that a recording current does not resonate owing to the inductance and stray capacity of a rotary head 34 during recording and a reproduced signal has no deterioration in S/N ratio during reproduction. For this purpose, the series circuit of the resistance RF and capacitor CF is connected between the output terminal 22 and input terminal 21 of the recording amplifier circuit 11 and negative feedback from the output terminal 22 of the recording amplifier 11 to the input terminal 21 is provided.

    Abstract translation: 目的：为了消除对连接和断开用于复制的电阻的电子开关的需要，以及通过在记录放大器电路的输入端子和输出端子之间连接电阻和电容器的串联电路来进行转录的偏置电源，以及 反馈记录放大器电路的输出。 构成：当记录放大器电路11的输出端子22和再生放大器电路12的输入端子23通过旋转变压器33连接到旋转磁头34而不用转换开关时，执行转录 记录电流由于旋转磁头34在记录期间的电感和杂散能力而不会谐振，并且再现信号在再现期间S / N比没有劣化。 为此，电阻RF和电容器CF的串联电路连接在记录放大器电路11的输出端子22和输入端子21之间，并且从记录放大器11的输出端子22到输入端子21的负反馈是 提供。

    Voltage-current converting circuit
    7.
    发明专利
    Voltage-current converting circuit 失效
    电流转换电路

    公开(公告)号：JPS59125106A

    公开(公告)日：1984-07-19

    申请号：JP23424882

    申请日：1982-12-30

    Applicant: Sony Corp

    Inventor： AKUTAGAWA TOORU ,  MACHIDA MASAHIKO

    IPC: H03F3/34 ,  G11B5/027 ,  G11B5/03

    CPC classification number: G11B5/03 ,  G11B5/027

    Abstract: PURPOSE: To suppress the generation of distortions by using the negative feedback to set an input point at zero impedance and therefore stabilizing the signal current with a resistance put between an input source and the input point.
    CONSTITUTION: An input source 20 is supplied to the base of an input transistor (TR)Q
    11 via a resistance RI. The collector output of the TRQ
    11 is negatively fed back to the base of the TRQ
    11 via the base and the emitter of the 2nd TRQ
    12 . As a result, the input impedance is set at zero and an input current iIN is decided by the input voltage eIN and the resistance RI. The constant current sources 16 and 17 are connected to the emitter and the collector of the TRQ
    12 respectively, and these current values are set at the same level by TRs Q
    13 ∼ Q
    18 . Therefore the current I
    4 delivered to a TRQ
    20 from the TRQ
    12 is equal to the current iIN.
    COPYRIGHT: (C)1984,JPO&Japio

    Abstract translation: 目的：通过使用负反馈来将输入点设置为零阻抗来抑制失真的产生，从而通过输入源和输入点之间的电阻来稳定信号电流。 构成：通过电阻RI将输入源20提供给输入晶体管（TR）Q11的基极。 TRQ11的集电极输出通过第二TRQ12的基极和发射极负反馈回TRQ11的基极。 结果，输入阻抗设定为零，输入电流iIN由输入电压eIN和电阻RI决定。 恒流源16和17分别连接到TRQ12的发射极和集电极，这些电流值由TRs Q13-Q18设置在相同电平。 因此，从TRQ12传递到TRQ20的当前I4等于当前的iIN。

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