公开(公告)号：US07745776B2

公开(公告)日：2010-06-29

申请号：US11864286

申请日：2007-09-28

申请人： Atsushi Wada ,  Kuniyuki Tani ,  Hajime Takashima

发明人： Atsushi Wada ,  Kuniyuki Tani ,  Hajime Takashima

IPC分类号： H01L31/062

CPC分类号： H04N5/235 ,  H04N5/335 ,  H04N5/35509 ,  H04N5/374 ,  H04N5/37452

摘要： In a photo detecting apparatus, a first capacitance is caused by a photo detecting element and the first capacitance is charged or discharged by current flowing through the photo detecting element. A second capacitance is connected in parallel with the photo detecting element, and the second capacitance charges or discharges an electric charge overflowing from the first capacitance. A current control element is connected to a terminal of the second capacitance on a side where the electric charge flows in, and the current control element delivers a current to cancel part of an electric charge when the electric charge overflowing from the first capacitance is stored in the second capacitance.

摘要翻译： 在光检测装置中，由光检测元件引起第一电容，并且通过流过光检测元件的电流对第一电容进行充电或放电。 第二电容与光检测元件并联连接，第二电容对从第一电容溢出的电荷进行充电或放电。 电流控制元件连接到电荷流入侧的第二电容的端子，并且当从第一电容溢出的电荷被存储在电流控制元件中时，电流控制元件输出电流以消除部分电荷 第二电容。

公开(公告)号：US20080067325A1

公开(公告)日：2008-03-20

申请号：US11858583

申请日：2007-09-20

申请人： Kuniyuki Tani ,  Hajime Takashima ,  Atsushi Wada

发明人： Kuniyuki Tani ,  Hajime Takashima ,  Atsushi Wada

IPC分类号： H01L27/144

CPC分类号： H04N5/235 ,  H01L27/14609 ,  H01L27/14621 ,  H01L27/14656 ,  H04N5/3559 ,  H04N5/3591 ,  H04N5/3594 ,  H04N5/374

摘要： A plurality of pixel circuits, provided with a plurality of photo detecting elements, respectively, cause photocurrent corresponding to an incident light. The pixel circuits are placed on intersections of a plurality of data lines and scanning lines, respectively. A second capacitance charges and discharges an electric charge overflowing from a first capacitance caused by the photo detecting element. Each second capacitance is shared by a plurality of pixel circuits. A plurality of pixel circuits sharing the second capacitance are controlled so that exposure periods of the pixel circuits do not overlap with one another.

摘要翻译： 分别具有多个光检测元件的多个像素电路分别引起与入射光对应的光电流。 像素电路分别放置在多条数据线和扫描线的交点上。 第二电容对由光检测元件引起的第一电容溢出的电荷进行放电。 每个第二电容由多个像素电路共享。 控制共享第二电容的多个像素电路，使得像素电路的曝光周期彼此不重叠。

公开(公告)号：US20050270215A1

公开(公告)日：2005-12-08

申请号：US11140964

申请日：2005-06-01

申请人： Atsushi Wada ,  Kuniyuki Tani

发明人： Atsushi Wada ,  Kuniyuki Tani

IPC分类号： H03M1/06 ,  H03M1/12 ,  H03M1/16 ,  H03M1/18

CPC分类号： H03M1/181 ,  H03M1/0695 ,  H03M1/167

摘要： A DSP calculates time integration of the light amount received by a CCD, using an input image. Determination is made regarding whether or not the light amount is equal to or smaller than a predetermined threshold. In a case that the light amount is equal to or smaller than the predetermined threshold, the DSP outputs a control signal to an AD converter for operation in the 8-bit mode. In a case that the light amount is greater than the threshold, the DSP outputs a control signal to the AD converter for operation in the 10-bit mode. The AD converter has a function of dynamic adjustment of conversion bits according to control from the DSP.

摘要翻译： DSP使用输入图像计算由CCD接收的光量的时间积分。 确定光量是否等于或小于预定阈值。 在光量等于或小于预定阈值的情况下，DSP将控制信号输出到AD转换器，以在8位模式下操作。 在光量大于阈值的情况下，DSP向AD转换器输出控制信号，以在10位模式下操作。 根据DSP的控制，AD转换器具有转换位的动态调整功能。

公开(公告)号：US06882297B2

公开(公告)日：2005-04-19

申请号：US10808566

申请日：2004-03-25

申请人： Atsushi Wada ,  Kuniyuki Tani

发明人： Atsushi Wada ,  Kuniyuki Tani

IPC分类号： H03M1/44 ,  H03M1/00 ,  H03M1/12 ,  H03M1/14 ,  H03M1/16 ,  H03M1/38 ,  H03M1/46 ,  H03M1/60

CPC分类号： H03M1/002 ,  H03M1/167

摘要： A multi-stage pipelined AD converter has n stages of conversion units, such as a first conversion unit, a second conversion unit, an (n−1)th conversion unit, and an nth conversion unit, which successively convert an analog signal into a digital signal each by several bits starting from the most significant bit. Each of the converted digital signals of several bits is combined in a digital output circuit. A first voltage source supplies a higher voltage than a second voltage source. The first voltage source supplies a high voltage to the first stage or the first conversion unit, while the second voltage source supplies a low voltage to the second and subsequent stages of the second conversion unit to the nth conversion unit which require a lower analog accuracy.

摘要翻译： 多级流水线AD转换器具有n级转换单元，例如第一转换单元，第二转换单元，第（n-1）转换单元和第n转换单元，其将模拟信号连续地转换为 数字信号每个从最高有效位开始几位。 在数字输出电路中组合了数位转换的数字信号。 第一电压源提供比第二电压源更高的电压。 第一电压源向第一级或第一转换单元提供高电压，而第二电压源将第二转换单元的第二级和后级提供低电压到第n个转换单元，这需要较低的模拟精度。

公开(公告)号：US06727747B2

公开(公告)日：2004-04-27

申请号：US10053870

申请日：2002-01-24

申请人： Kuniyuki Tani ,  Atsushi Wada

发明人： Kuniyuki Tani ,  Atsushi Wada

IPC分类号： H03F345

CPC分类号： G06F17/5063 ,  H03F1/301 ,  H03F1/303 ,  H03F3/45183 ,  H03F3/72

摘要： Three kinds of shrink factors, 1 time, 0.5 time, and 0.25 time, are prepared and three sets of operational amplifier layout information are also prepared as a library in correspondence with the three kinds of shrink factors. At each shrink factor, the bias voltage is varied between upper and lower limits to vary the bias current.

摘要翻译： 准备了3种收缩因子，1次，0.5次和0.25次，并且还将三组运算放大器布局信息准备为与三种收缩因子对应的库。 在每个收缩因子下，偏置电压在上限和下限之间变化，以改变偏置电流。

公开(公告)号：US07435937B2

公开(公告)日：2008-10-14

申请号：US11390424

申请日：2006-03-28

申请人： Yoh Takano ,  Atsushi Wada ,  Kuniyuki Tani

发明人： Yoh Takano ,  Atsushi Wada ,  Kuniyuki Tani

IPC分类号： G01J1/44 ,  H01L27/00 ,  H04N3/14

CPC分类号： H04N5/3745 ,  H01L27/14643

摘要： A set of voltage output units outputs the light intensity detected by a photodetection device in the form of a voltage value. With the set of voltage output units, the capacitance of the cathode terminal of a photodiode PD provided within the pixel is charged or discharged using the photoelectric current. A current output unit outputs photoelectric current Iph flowing from the photodetection device. The current output unit includes a current output transistor provided between one terminal of the photodetection device and the data line. A pixel circuit effects control of the pixel so as to activate either the set of the voltage output units or the current output unit, thereby outputting either voltage value or photoelectric current to the data line connected to the pixel.

摘要翻译： 一组电压输出单元以电压值的形式输出由光检测装置检测的光强度。 利用该组电压输出单元，使用光电流对设置在像素内的光电二极管PD的阴极端子的电容进行充电或放电。 电流输出单元输出从光检测装置流出的光电流Iph。 电流输出单元包括设置在光检测装置的一个端子与数据线之间的电流输出晶体管。 像素电路实现像素的控制，以激活电压输出单元或电流输出单元，从而将电压值或光电流输出到连接到像素的数据线。

公开(公告)号：US07148832B2

公开(公告)日：2006-12-12

申请号：US11140964

申请日：2005-06-01

申请人： Atsushi Wada ,  Kuniyuki Tani

发明人： Atsushi Wada ,  Kuniyuki Tani

IPC分类号： H03M1/12

CPC分类号： H03M1/181 ,  H03M1/0695 ,  H03M1/167

摘要： A DSP calculates time integration of the light amount received by a CCD, using an input image. Determination is made regarding whether or not the light amount is equal to or smaller than a predetermined threshold. In a case that the light amount is equal to or smaller than the predetermined threshold, the DSP outputs a control signal to an AD converter for operation in the 8-bit mode. In a case that the light amount is greater than the threshold, the DSP outputs a control signal to the AD converter for operation in the 10-bit mode. The AD converter has a function of dynamic adjustment of conversion bits according to control from the DSP.

摘要翻译： DSP使用输入图像计算由CCD接收的光量的时间积分。 确定光量是否等于或小于预定阈值。 在光量等于或小于预定阈值的情况下，DSP将控制信号输出到AD转换器，以在8位模式下操作。 在光量大于阈值的情况下，DSP向AD转换器输出控制信号，以在10位模式下操作。 根据DSP的控制，AD转换器具有转换位的动态调整功能。

公开(公告)号：US20050062855A1

公开(公告)日：2005-03-24

申请号：US10918359

申请日：2004-08-16

申请人： Kuniyuki Tani ,  Atsushi Wada

发明人： Kuniyuki Tani ,  Atsushi Wada

IPC分类号： H03M1/10 ,  H04N1/028 ,  H04N5/16 ,  H04N5/225 ,  H04N5/228 ,  H04N5/235 ,  H04N5/335 ,  H04N5/361 ,  H04N5/369 ,  H04N5/372

CPC分类号： H04N5/165 ,  H04N5/361 ,  H04N5/378

摘要： A signal adjustment circuit which aims to simplify measurement of a component to be adjusted and to improve precision of adjustment. An analog front-end circuit of an imaging device corresponds to a signal processing circuit. By feeding back a black-level signal that is the component to be adjusted, the black-level signal is removed from an imaging signal. A black-level adjustment circuit includes a bypass circuit for allowing the black-level signal to be fed back to bypass a PGA that is a variable gain amplifier. When a black level is measured, the black-level signal passes through the bypass circuit. Thus, setting of a gain does not affect on the black-level signal. An offset component of the PGA has no adverse effect on the measurement of the black level. Moreover, a structure may be provided that inputs a reference voltage to an AD converter and detects and cancels an offset component of the AD converter. Furthermore, a similar structure may be also provided for the PGA.

摘要翻译： 一种信号调整电路，其目的是简化要调整的部件的测量并提高调整精度。 成像装置的模拟前端电路对应于信号处理电路。 通过反馈作为要调整的分量的黑电平信号，从成像信号中去除黑电平信号。 黑电平调整电路包括用于允许反馈黑电平信号旁路作为可变增益放大器的PGA的旁路电路。 当测量黑电平时，黑电平信号通过旁路电路。 因此，增益的设置不会影响黑电平信号。 PGA的偏移分量对黑色电平的测量没有不利影响。 此外，可以提供将参考电压输入到AD转换器的结构，并且检测和消除AD转换器的偏移分量。 此外，也可以为PGA提供类似的结构。

公开(公告)号：US06538246B2

公开(公告)日：2003-03-25

申请号：US10137427

申请日：2002-05-03

申请人： Atsushi Wada ,  Takeshi Otsuka ,  Kuniyuki Tani

发明人： Atsushi Wada ,  Takeshi Otsuka ,  Kuniyuki Tani

IPC分类号： H01J4014

CPC分类号： G06G7/28 ,  H03G1/0088

摘要： Eight resistors having resistance values of R×2i (i=0 to 7) (&OHgr;) are serially connected while eight switches exhibiting parasitic resistance values of r×2i (&OHgr;) in ON states are connected in parallel with the resistors respectively, for changing a resistance value by turning on/off the switches. The resistors are connected between an inversion input terminal of an operational amplifier and a terminal, and a non-inversion input terminal receives a prescribed reference voltage. Between the inversion input terminal and an output terminal of the operational amplifier, a resistor and a switch of a variable resistance circuit forming a negative feedback loop are connected to the output terminal while another resistor and another switch are connected to the inversion input terminal. In the variable resistance circuit, the resistance values of the resistors are successively increased from the side of the terminal, so that the resistor connected to the inversion input terminal has the maximum resistance value. Thus, only a single node is present ahead of the last resistor while a parasitic capacitance is minimized, whereby the frequency characteristic of an operational amplification circuit can be improved.

公开(公告)号：US06437723B1

公开(公告)日：2002-08-20

申请号：US09665678

申请日：2000-09-20

申请人： Takeshi Otsuka ,  Kuniyuki Tani ,  Atsushi Wada

发明人： Takeshi Otsuka ,  Kuniyuki Tani ,  Atsushi Wada

IPC分类号： H03M100

CPC分类号： G11B7/005

摘要： A comparator converts an input analog RF signal to a digital signal and inputs the digital signal in a charge pump circuit. The charge pump circuit controls charging/discharging of an integration capacitor in response to the output level of the digital signal output from the comparator. The charging quantity of the integration capacitor is used as a reference voltage of an RF amplifier, and a center voltage level of the analog RF signal output from the RF amplifier is adjusted in response to an average dc level of the digital signal. Thus, it follows that a slice level of a signal reproducing circuit is properly controlled.

摘要翻译： 比较器将输入的模拟RF信号转换为数字信号，并在电荷泵电路中输入数字信号。 电荷泵电路响应于从比较器输出的数字信号的输出电平来控制积分电容器的充电/放电。 积分电容器的充电量用作RF放大器的参考电压，并且响应于数字信号的平均直流电平来调节从RF放大器输出的模拟RF信号的中心电压电平。 因此，可以适当地控制信号再现电路的限幅电平。