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    • 1. 发明申请
    • DC-DC CONVERTER AND CONTROL CIRCUIT FOR DC-DC CONVERTER
    • DC-DC转换器的DC-DC转换器和控制电路
    • US20090051339A1
    • 2009-02-26
    • US12257222
    • 2008-10-23
    • Morihito HasegawaChikara TsuchiyaHidenobu Ito
    • Morihito HasegawaChikara TsuchiyaHidenobu Ito
    • G05F1/618
    • H02M1/38H03K2017/307
    • A DC-DC converter prevents through current from flowing in an output transistor. A first transistor receives an input voltage. A second transistor is connected to the first transistor. A comparator is connected to the second transistor. The comparator detects current flowing through a choke coil based on the potential difference between two terminals of the second transistor to generate a switching control signal for turning the second transistor on and off. The second transistor and the comparator form an ideal diode. A control circuit of the DC-DC converter generates an activation signal for turning the first transistor on and off based on a pulse signal to keep an output voltage constant. A through current prevention pulse generation circuit generates a pulse signal for turning off the second transistor from before the first transistor is turned on to after the first transistor is turned on.
    • DC-DC转换器防止直流电流流入输出晶体管。 第一晶体管接收输入电压。 第二晶体管连接到第一晶体管。 比较器连接到第二晶体管。 比较器基于第二晶体管的两个端子之间的电位差来检测流过扼流线圈的电流,以产生用于使第二晶体管接通和关断的开关控制信号。 第二个晶体管和比较器构成一个理想的二极管。 DC-DC转换器的控制电路基于脉冲信号产生用于使第一晶体管导通和截止的激活信号,以保持输出电压恒定。 通过电流防止脉冲产生电路在第一晶体管导通之后到第一晶体管导通之后产生用于使第二晶体管截止的脉冲信号。
    • 2. 发明授权
    • Offset cancel circuit of voltage follower equipped with operational amplifier
    • 具有运算放大器的电压跟随器的偏移消除电路
    • US07358946B2
    • 2008-04-15
    • US11181774
    • 2005-07-15
    • Masatoshi KokubunShinya UdoChikara Tsuchiya
    • Masatoshi KokubunShinya UdoChikara Tsuchiya
    • G09G3/36
    • G09G3/3685H03F3/45753
    • A differential amplifying circuit 11 includes a current mirror circuit having first and second current ends to which drains of MOS transistors M8 and M9 are respectively connected, and a pair of differential MOS transistors M1 and M2 having gates between which a switch SW1 is connected. A reference potential Vref is applied to the gate of the MOS transistors M9. A switch SW2 is connected between the output VO of an output buffer circuit 12 and the gate of a MOS transistor M1, and a switch SW3 is connected between the output VO and the gate of the MOS transistor M8. During the offset-cancel preparation period, the switches SW1 and SW3 are on and the switch SW2 is off. Next, the switches SW1 to SW3 are turned over, consequently outputting offset-canceled potential VO.
    • 差分放大电路11包括具有分别连接MOS晶体管M 8和M 9的漏极的第一和第二电流端的电流镜电路,以及具有栅极的一对差分MOS晶体管M 1和M 2,开关SW 1连接。 参考电位Vref被施加到MOS晶体管M 9的栅极。 开关SW 2连接在输出缓冲器电路12的输出VO和MOS晶体管M 1的栅极之间,开关SW 3连接在输出VO和MOS晶体管M8的栅极之间。 在偏移取消准备期间,开关SW 1和SW 3接通,开关SW 2断开。 接下来,开关SW 1至SW 3翻转,从而输出偏移抵消电位VO。
    • 3. 发明授权
    • X-Y address type solid-state image pickup device with an image averaging circuit disposed in the noise cancel circuit
    • 具有设置在噪声消除电路中的图像平均电路的X-Y地址型固态图像拾取装置
    • US07242427B2
    • 2007-07-10
    • US10055901
    • 2002-01-28
    • Masatoshi KokubunKatsuyosi YamamotoShinya UdoJun FunakoshiChikara Tsuchiya
    • Masatoshi KokubunKatsuyosi YamamotoShinya UdoJun FunakoshiChikara Tsuchiya
    • H04N5/217
    • H04N5/378H04N5/343H04N5/347
    • The invention relates to an X-Y address type solid-state image pickup device manufactured by a CMOS process, and has an object to provide an X-Y address type solid-state image pickup device in which a chip area is not increased, manufacturing costs are suppressed, and an image averaging processing can be carried out. Pixel regions Pmn are arranged in a matrix form in regions defined by horizontal selection lines RWm and vertical selection lines CLn. Each of the pixel regions Pmn includes a photodiode 10, a source follower amplifier 14 for converting an electric charge of the photodiode 10 into a voltage and amplifying it to output image data, and a horizontal selection transistor 16 for outputting the image data to a predetermined one of the vertical selection lines CLn. An amplifier/noise cancel circuit 6 has a built-in image averaging circuit for carrying out an averaging processing of the image data outputted from at least two of the plurality of the pixel regions Pmn.
    • 本发明涉及一种通过CMOS工艺制造的XY地址型固态摄像装置,其目的是提供一种XY地址型固态摄像装置,其中芯片面积不增加,制造成本被抑制, 并且可以执行图像平均处理。 像素区域Pmn以由水平选择线RWm和垂直选择线CLn限定的区域中的矩阵形式排列。 每个像素区Pmn包括光电二极管10,用于将光电二极管10的电荷转换成电压并放大以输出图像数据的源极跟随器放大器14以及用于将图像数据输出到预定的水平选择晶体管16 垂直选择线CLn之一。 放大器/噪声消除电路6具有内置图像平均电路,用于对从多个像素区域Pmn中的至少两个输出的图像数据进行平均处理。
    • 10. 发明申请
    • Linear regulator circuit
    • 线性稳压电路
    • US20070216381A1
    • 2007-09-20
    • US11499718
    • 2006-08-07
    • Chikara TsuchiyaEiji Nishimori
    • Chikara TsuchiyaEiji Nishimori
    • G05F1/00
    • G05F1/575
    • A linear regulator circuit for suppressing power supply noise that propagates to an output voltage. An LDO circuit functioning as the linear regulator circuit is provided with an output transistor including a source for receiving input voltage, a drain for outputting the output voltage, and a control terminal. An error amplifier powered by the input voltage generates a control voltage for controlling the output transistor based on a potential difference between a feedback voltage, which corresponds to the output voltage, and a reference voltage. A first capacitor and a resistor are connected in series between the source of the output transistor and an output terminal of the error amplifier.
    • 一种用于抑制传播到输出电压的电源噪声的线性调节器电路。 用作线性调节器电路的LDO电路设置有包括用于接收输入电压的源极,用于输出输出电压的漏极和控制端子的输出晶体管。 由输入电压供电的误差放大器基于对应于输出电压的反馈电压与参考电压之间的电位差产生用于控制输出晶体管的控制电压。 第一电容器和电阻器串联连接在输出晶体管的源极和误差放大器的输出端子之间。