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    Light amount detecting apparatus, and light amount information processing apparatus
    41.
    发明授权
    Light amount detecting apparatus, and light amount information processing apparatus 有权
    光量检测装置和光量信息处理装置

    公开(公告)号：US08742314B2

    公开(公告)日：2014-06-03

    申请号：US13380407

    申请日：2009-07-01

    申请人： Kiyoshi Tateishi ,  Yoshihiro Hanada ,  Michiaki Nakamura

    发明人： Kiyoshi Tateishi ,  Yoshihiro Hanada ,  Michiaki Nakamura

    IPC分类号： H03F3/08

    CPC分类号： H03F3/45475 ,  G01J1/44 ,  H03F3/082 ,  H03F3/087 ,  H03F3/45183 ,  H03F3/4565 ,  H03F2203/45082 ,  H03F2203/45138 ,  H03F2203/45528 ,  H03F2203/45702

    摘要： A light amount detecting apparatus includes: a photoelectric converting element converting quantity of light inputted to current; a current/voltage converting device having a positive input terminal connected to a first terminal of the photoelectric converting element, a negative input terminal connected to a second terminal of the photoelectric converting element, a negative output terminal for reversing polarity of a current inputted to the positive input terminal and outputting it as a voltage, a positive output terminal for reversing polarity of a current inputted to the negative input terminal and outputting it as a voltage, a first negative feedback resistor connecting the positive and negative output terminals, and a second negative feedback resistor connected between the negative and positive output terminals, the current/voltage converting device setting the photoelectric converting element in zero bias and converting the converted current to the voltage; and an amplifying device for amplifying the converted voltage.

    摘要翻译： 光量检测装置包括：光电转换元件，将输入到电流的光量进行转换; 电流/电压转换装置，具有连接到光电转换元件的第一端子的正输入端子，连接到光电转换元件的第二端子的负输入端子，用于反转输入到光电转换元件的电流的极性的负输出端子 正输入端子并将其输出为电压;正输出端子，用于反转输入到负输入端子的电流的极性并将其输出为电压;第一负反馈电阻器，连接正极和负极输出端子;以及第二负极 反馈电阻连接在负输出端和正输出端之间，电流/电压转换装置将光电转换元件设置为零偏置并将转换后的电流转换为电压; 以及用于放大转换电压的放大装置。

    OVERLOAD PROTECTION FOR AMPLIFIER OF PHOTODIODE SIGNAL
    42.
    发明申请
    OVERLOAD PROTECTION FOR AMPLIFIER OF PHOTODIODE SIGNAL 有权
    光电信号放大器的过载保护

    公开(公告)号：US20140110566A1

    公开(公告)日：2014-04-24

    申请号：US14058247

    申请日：2013-10-20

    申请人： PRIMESENSE LTD.

    发明人： Raviv Weber

    IPC分类号： H03F1/52

    CPC分类号： H03F1/52 ,  H03F3/08 ,  H03F3/087

    摘要： A method for sensing includes connecting an input of a trans-impedance amplifier (TIA) to a first terminal of a sensor, which generates a current in response to an input signal that is incident on the sensor, the signal comprising pulses of a characteristic duration. A resistor is connected in series between a second terminal of the sensor and a power supply, which is set to drive the sensor at a selected voltage. A capacitor is connected to the second terminal in parallel with the sensor and the TIA and in series with the resistor. An upper limit is set on the current that is to be input to the TIA from the sensor, and respective values of the resistor and the capacitor are chosen, responsively to the characteristic duration of the pulses and the selected voltage, to prevent the current input to the TIA from exceeding the upper limit.

    摘要翻译： 一种用于感测的方法包括将跨阻抗放大器（TIA）的输入端连接到传感器的第一端子，该传感器的第一端口响应入射在传感器上的输入信号产生电流，该信号包括特征持续时间的脉冲 。 电阻器串联连接在传感器的第二端子和电源之间，电源被设置成以选定的电压驱动传感器。 电容器与传感器和TIA并联连接到第二端子并与电阻器串联。 对要从传感器输入到TIA的电流设置上限，并且响应于脉冲的特征持续时间和所选择的电压来选择电阻器和电容器的各个值，以防止电流输入 到TIA超过上限。

    NOISE-MATCHING DYNAMIC BIAS FOR COLUMN RAMP COMPARATORS IN A CMOS IMAGE SENSOR
    44.
    发明申请
    NOISE-MATCHING DYNAMIC BIAS FOR COLUMN RAMP COMPARATORS IN A CMOS IMAGE SENSOR 有权
    CMOS图像传感器中的色散比较器的噪声匹配动态偏置

    公开(公告)号：US20140048685A1

    公开(公告)日：2014-02-20

    申请号：US13585492

    申请日：2012-08-14

    申请人： Guangbin Zhang ,  Zhiqiang Song

    发明人： Guangbin Zhang ,  Zhiqiang Song

    IPC分类号： H01L27/146

    CPC分类号： H01L27/14641 ,  H03F3/087 ,  H04N5/365 ,  H04N5/3658 ,  H04N5/374 ,  H04N5/378

    摘要： Embodiments of an image sensor including a pixel array with a plurality of pixels arranged into rows and columns. Control circuitry coupled to the pixels in each row, and an analog-to-digital converter is coupled to the pixels in each column of the pixel array. Each analog-to-digital converter includes a ramp comparator, and a variable current source coupled to the ramp comparator to provide a variable bias current to the ramp comparator. The bias current can adjusted during reading of a row of pixels according to a dynamic bias current profile that maintains at least a specified margin between the random noise of the pixels and an acceptable noise level. Other embodiments are disclosed and claimed.

    摘要翻译： 包括具有排列成行和列的多个像素的像素阵列的图像传感器的实施例。 耦合到每行中的像素的控制电路和模数转换器耦合到像素阵列的每列中的像素。 每个模数转换器包括斜坡比较器和耦合到斜坡比较器的可变电流源，以向斜坡比较器提供可变偏置电流。 根据在像素的随机噪声和可接受的噪声水平之间保持至少指定的裕度的动态偏置电流分布，可以在读取一行像素期间调整偏置电流。 公开和要求保护其他实施例。

    DIODE ENHANCED AMPLIFIER CIRCUITS AND METHODS THEREOF
    45.
    发明申请
    DIODE ENHANCED AMPLIFIER CIRCUITS AND METHODS THEREOF 有权
    二极管增强放大器电路及其方法

    公开(公告)号：US20130293296A1

    公开(公告)日：2013-11-07

    申请号：US13870671

    申请日：2013-04-25

    申请人： ADAPTIVE I/O TECHNOLOGIES, INC.

    发明人： James Proffitt

    IPC分类号： H03F3/68

    CPC分类号： H03F3/68 ,  H03F3/08 ,  H03F3/087 ,  H03F3/211 ,  H03F2203/21109 ,  Y10T29/49117

    摘要： An enhanced amplifier circuit includes an amplifier having an input and an output and a current source. A diode is coupled between the current source and the input of the amplifier. The enhanced amplifier circuit may include a number of current sources with associated diodes and amplifiers. The diode prevents the amplifier from interacting with some undesired properties of the current source, such as capacitance and resistance, prevents current sources from interacting with one another, and allows for the use of intrinsic properties of the diode to modify the current source output signal, among other advantages.

    摘要翻译： 增强放大器电路包括具有输入和输出以及电流源的放大器。 二极管耦合在电流源和放大器的输入端之间。 增强放大器电路可以包括具有相关联的二极管和放大器的多个电流源。 二极管防止放大器与电流源的一些不期望的性质（例如电容和电阻）相互作用，防止电流源彼此相互作用，并且允许使用二极管的固有特性来修改电流源输出信号， 其他优点。

    PHOTOELECTRIC CONVERSION CIRCUIT
    47.
    发明申请
    PHOTOELECTRIC CONVERSION CIRCUIT 失效
    光电转换电路

    公开(公告)号：US20120273659A1

    公开(公告)日：2012-11-01

    申请号：US13286644

    申请日：2011-11-01

    申请人： Tatsuyuki Maki

    发明人： Tatsuyuki Maki

    IPC分类号： H03F3/08

    CPC分类号： H03F3/087

    摘要： There are provided a photodiode 11, an inverting amplifier 12 which includes an operational amplifier 12a and a first resistor 12b, a second resistor 21 which has a smaller resistance value than the first resistor 12b and which is inserted between the positive side of a power supply and the photodiode 11, a differential amplifier 22 which outputs a voltage across both ends of the second resistor 21, and a diode 23 which is connected between a ground and a connection point between the photodiode 11 and an inverting input terminal of the operational amplifier 12a and which changes to a non-conductive state when the inverting amplifier 12 is not saturated and changes to a conductive state when the inverting amplifier 12 is saturated so that the output current of the photodiode 11 is bypassed.

    摘要翻译： 设置有光电二极管11，反相放大器12，其包括运算放大器12a和第一电阻器12b，第二电阻器21的电阻值比第一电阻器12b小，并且插入电源的正极侧 光电二极管11，输出第二电阻21的两端的电压的差分放大器22和连接在地与光电二极管11与运算放大器12a的反相输入端之间的连接点的二极管23 并且当反相放大器12不饱和时变为非导通状态，并且当反相放大器12饱和时变为导通状态，使得旁路光电二极管11的输出电流。

    LIGHT RECEIVING CIRCUIT WITH DIFFERENTIAL OUTPUT
    48.
    发明申请
    LIGHT RECEIVING CIRCUIT WITH DIFFERENTIAL OUTPUT 有权
    具有不同输出功能的光接收电路

    公开(公告)号：US20120249241A1

    公开(公告)日：2012-10-04

    申请号：US13075474

    申请日：2011-03-30

    申请人： Akihiro MOTO ,  Keiji TANAKA

    发明人： Akihiro MOTO ,  Keiji TANAKA

    IPC分类号： H03F3/45

    CPC分类号： H03F3/087 ,  H03F2200/411 ,  H03F2203/45528

    摘要： A trans-impedance amplifier (TIA) for a light-receiving circuit is disclosed where the TIA reduces the power consumption as suppressing the degradation of the signal quality in high frequency regions. The TIA comprises a primary core, a dummy core, and a differential amplifier that receives each output of two cores in the differential mode. Two cores have an arrangement substantially same to each other except that the power consumption thereof is smaller in the dummy core. Because the output impedance of two cores becomes substantially equal, the scattering parameter of the common mode to the differential mode at the output of the primary core becomes small enough.

    摘要翻译： 公开了一种用于光接收电路的跨阻放大器（TIA），其中TIA在抑制高频区域中的信号质量劣化的情况下降低了功耗。 TIA包括在差分模式下接收两个核心的每个输出的初级核心，虚拟核心和差分放大器。 两个芯具有彼此基本相同的布置，除了在虚拟芯中的功耗较小。 因为两个核的输出阻抗变得基本相等，所以在初级核的输出处的共模到差分模的散射参数变得足够小。

    VARIABLE GAIN AMPLIFIER COMPENSATING FREQUENCY RESPONSE THEREOF
    49.
    发明申请
    VARIABLE GAIN AMPLIFIER COMPENSATING FREQUENCY RESPONSE THEREOF 有权
    可变增益放大器补偿频率响应

    公开(公告)号：US20120217381A1

    公开(公告)日：2012-08-30

    申请号：US13401887

    申请日：2012-02-22

    申请人： Taizou TATSUMI

    发明人： Taizou TATSUMI

    IPC分类号： H03F3/08 ,  H03G3/20 ,  H03F3/45

    CPC分类号： H03F3/087 ,  H03F3/45089 ,  H03F2200/405 ,  H03F2203/45138 ,  H03F2203/45302 ,  H03G1/0023 ,  H03G3/3084

    摘要： A variable gain amplifier canceling the dependence of the frequency bandwidth thereof on the gain is disclosed. The variable gain amplifier includes a differential stage with a cascade transistor put between an amplifying transistor and a load resistor. The amplifier further includes a current supplier and a current extractor. The current supplier extracts a current flowing in the second transistor by supplying an additional current to the amplifying transistor. The current extractor adds the additional current flowing in the load resistor which is extracted by the additional current by the current supplier. The bias condition of the load resistor is kept substantially constant independent of the equivalent impedance of the cascade transistor.

    摘要翻译： 公开了一种消除其频率带宽对增益的依赖性的可变增益放大器。 可变增益放大器包括放大晶体管和负载电阻之间的级联晶体管的差分级。 放大器还包括当前供应商和当前提取器。 当前的供应商通过向放大晶体管提供附加电流来提取在第二晶体管中流动的电流。 电流提取器增加流过负载电阻器的额外电流，该额定电流由当前供应商由附加电流提取。 不管级联晶体管的等效阻抗，负载电阻的偏置条件保持基本恒定。