专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20110254986A1 ANALOG-DIGITAL CONVERTER, IMAGE SENSOR SYSTEM AND CAMERA DEVICE 有权
标题翻译：模拟数字转换器，图像传感器系统和摄像机设备
公开(公告)号：US20110254986A1
公开(公告)日：2011-10-20
申请号：US13167345
申请日：2011-06-23
申请人： Kazuko Nishimura , Makoto Ikuma , Yutaka Abe
发明人： Kazuko Nishimura , Makoto Ikuma , Yutaka Abe
IPC分类号： H04N5/335 , H01L25/00 , H03M1/12
CPC分类号： H04N5/37455 , H01L27/146 , H03K5/24 , H03K5/2481 , H03M1/123 , H03M1/56 , H04N5/3745
摘要： An analog-digital converter includes n comparators arranged in a first direction with a predetermined cell pitch and corresponding respectively to n input voltages, each comparator comparing a voltage value of a reference signal whose voltage value increases or decreases over time with an input voltage corresponding to the comparator. Each of the n comparators includes differential transistors to which the reference signal and the input voltage are given respectively. A differential transistor is formed by p unit transistors connected in series whose gates are given the reference signal, and another differential transistor is formed by p unit transistors connected in series whose gates are given the input voltage.
摘要翻译：模拟数字转换器包括n个比较器，它们以预定的单元间距排列在第一方向上，分别对应于n个输入电压，每个比较器比较其电压值随时间增加或减小的参考信号的电压值与对应于比较器。 n个比较器中的每一个包括分别给出参考信号和输入电压的差分晶体管。差分晶体管由串联连接的p单位晶体管形成，栅极被赋予参考信号，另一个差分晶体管由串联连接的p单位晶体管形成，栅极被赋予输入电压。

2. 发明授权

US07809285B2 Receiving circuit and optical signal receiving circuit 有权
标题翻译：接收电路和光信号接收电路
公开(公告)号：US07809285B2
公开(公告)日：2010-10-05
申请号：US11662090
申请日：2005-08-29
申请人： Kazuko Nishimura , Hiroshi Kimura
发明人： Kazuko Nishimura , Hiroshi Kimura
IPC分类号： H04B10/06
CPC分类号： H03F3/08 , H03F1/08 , H03F2200/78 , H03G3/3084
摘要： A receiving circuit comprises a transimpedance amplifier 3 including an inversion amplifier 2 for amplifying an input current IN, and a feedback resistance R1 connected between an input and an output of the inversion amplifier 2, a comparison circuit 4 for comparing an output OUT of the transimpedance amplifier 3 with a certain desired reference value, and outputting a result of the comparison, and a control circuit for holding the comparison result, and generating an AGC signal 20 for adjusting a gain of the transimpedance amplifier 3. The transimpedance amplifier 20 has a function capable of gain adjustment in accordance with the input AGC signal 20. The control circuit 5 performs gain adjustment until the output OUT of the transimpedance amplifier 3 exceeds the reference value so that an appropriate gain is obtained. Therefore, even when an input has a wide dynamic range, it is possible to prevent signal saturation and a distortion in output waveform in the transimpedance amplifier, so that appropriate reception can be invariably performed and a signal having a stable duty can be output.
摘要翻译：接收电路包括跨阻抗放大器3，其包括用于放大输入电流IN的反相放大器2和连接在反相放大器2的输入和输出端之间的反馈电阻R1，比较电路4，用于比较跨阻抗的输出OUT 具有一定的期望参考值的放大器3，并输出比较结果，以及用于保持比较结果的控制电路，并产生用于调整跨阻抗放大器3的增益的AGC信号20.跨阻放大器20具有功能能够根据输入的AGC信号20进行增益调整。控制电路5进行增益调整，直到跨阻抗放大器3的输出OUT超过参考值，从而获得适当的增益。因此，即使当输入具有宽动态范围时，也可以防止跨阻放大器中的信号饱和和输出波形的失真，使得可以不间断地执行适当的接收，并且可以输出具有稳定占空比的信号。

3. 发明申请

US20080056732A1 Receiving Circuit and Optical Signal Receiving Circuit 有权
标题翻译：接收电路和光信号接收电路
公开(公告)号：US20080056732A1
公开(公告)日：2008-03-06
申请号：US11662090
申请日：2005-08-29
申请人： Kazuko Nishimura , Hiroshi Kimura
发明人： Kazuko Nishimura , Hiroshi Kimura
IPC分类号： H04B10/06
CPC分类号： H03F3/08 , H03F1/08 , H03F2200/78 , H03G3/3084
摘要： A receiving circuit comprises a transimpedance amplifier 3 including an inversion amplifier 2 for amplifying an input current IN, and a feedback resistance R1 connected between an input and an output of the inversion amplifier 2, a comparison circuit 4 for comparing an output OUT of the transimpedance amplifier 3 with a certain desired reference value, and outputting a result of the comparison, and a control circuit for holding the comparison result, and generating an AGC signal 20 for adjusting a gain of the transimpedance amplifier 3. The transimpedance amplifier 20 has a function capable of gain adjustment in accordance with the input AGC signal 20. The control circuit 5 performs gain adjustment until the output OUT of the transimpedance amplifier 3 exceeds the reference value so that an appropriate gain is obtained. Therefore, even when an input has a wide dynamic range, it is possible to prevent signal satuation and a distortion in output waveform in the transimpedance amplifier, so that appropriate reception can be invariably performed and a signal having a stable duty can be output.
摘要翻译：接收电路包括跨阻抗放大器3，其包括用于放大输入电流IN的反相放大器2和连接在反相放大器2的输入和输出端之间的反馈电阻R 1，比较电路4，具有一定期望参考值的跨阻抗放大器3，并输出比较结果，以及用于保持比较结果的控制电路，并产生用于调整跨阻抗放大器3的增益的AGC信号20.跨阻放大器20具有功能，其能够根据输入的AGC信号20进行增益调整。控制电路5进行增益调整，直到跨阻抗放大器3的输出OUT超过参考值，从而获得适当的增益。因此，即使当输入的动态范围宽时，也可以防止跨阻放大器的信号饱和和输出波形的失真，从而可以不间断地执行适当的接收，并且可以输出具有稳定占空比的信号。

4. 发明授权

US06344761B2 Current comparison type latch 有权
标题翻译：当前比较型锁存器
公开(公告)号：US06344761B2
公开(公告)日：2002-02-05
申请号：US09819646
申请日：2001-03-29
申请人： Kazuko Nishimura , Hiroshi Kimura
发明人： Kazuko Nishimura , Hiroshi Kimura
IPC分类号： G11C706
CPC分类号： H03K3/356113 , H03K3/356182
摘要： In a current comparison type latch, during a reset mode of the current comparison type latch where the clock signal is at the “L” level, transistors which are disposed along the current path extending from the high potential power supply line to the low potential power supply line are turned OFF while transistors which connect the high potential power supply line to two output terminals are turned ON, so as to bring the potential of each of the two output terminals to a logic level (the “H” level or the “L” level), thereby preventing a through current from flowing from the high potential power supply line to the low potential power supply line. Therefore, a high-speed and high-precision current comparison is made while reducing the through current during a reset mode.
摘要翻译：在电流比较型锁存器中，在时钟信号为“L”电平的当前比较型锁存器的复位模式期间，沿着从高电位电源线延伸到低电位电流的电流路径设置的晶体管将高电位电源线连接到两个输出端子的晶体管导通，使两个输出端子的电位达到逻辑电平（“H”电平或“L” “电平”），从而防止贯通电流从高电位电源线流向低电位电源线。因此，在复位模式期间，在减小通电电流的同时进行高速高精度电流比较。

5. 发明授权

US08093543B2 Voltage generator circuit having a resistor ladder circuit and a switch control circuit allowing a variation of the slope of a given ramp wave, digital-to-analog converter, ramp generator circuit, analog-to-digital converter, image sensor system, and method for generating voltage 有权
标题翻译：电压发生器电路具有电阻梯形电路和开关控制电路，允许给定斜波波形的斜率变化，数模转换器，斜坡发生器电路，模数转换器，图像传感器系统和方法产生电压
公开(公告)号：US08093543B2
公开(公告)日：2012-01-10
申请号：US13012600
申请日：2011-01-24
申请人： Yuusuke Yamaoka , Kazuko Nishimura
发明人： Yuusuke Yamaoka , Kazuko Nishimura
IPC分类号： H01J40/14
CPC分类号： H03M1/664 , H03K4/026 , H03K7/08 , H03M1/123 , H03M1/56 , H03M1/58 , H04N5/378
摘要： A resistor-ladder voltage generator circuit is provided, which controls so that k switches among consecutive (k+1) switches out of a plurality of switches connected to the resistor ladder circuit are simultaneously set to an ON state, and which temporally switches the value of k. This allows voltage waveforms having different slopes to be arbitrarily obtained, ranging from a voltage waveform having a small slope to a voltage waveform having a large slope, thereby improving the resolution of a generated voltage waveform without increasing the numbers of resistors and switches, while A/D conversion time is not increased even if the number of bits is increased. In addition, by using this voltage generator circuit as a ramp generator circuit, and by dynamically switching the slope of the ramp wave, acceleration of an image sensor is achieved.
摘要翻译：提供了一种电阻梯形电压发生器电路，其控制使得连接到电阻梯形电路的多个开关中的连续（k + 1）个开关中的k个开关同时被设置为导通状态，并且其在时间上切换值的k。这允许从具有小斜率的电压波形到具有大斜率的电压波形的任意地获得具有不同斜率的电压波形，从而在不增加电阻器和开关的数量的情况下提高所产生的电压波形的分辨率，而A 即使比特数增加，D / D转换时间也不会增加。此外，通过使用该电压发生器电路作为斜坡发生电路，通过动态切换斜波的斜率，实现图像传感器的加速。

6. 发明授权

US08035066B2 Solid-state imaging device including A/D converting circuit with power-down controller 有权
标题翻译：固态成像装置包括具有掉电控制器的A / D转换电路
公开(公告)号：US08035066B2
公开(公告)日：2011-10-11
申请号：US12212328
申请日：2008-09-17
申请人： Yutaka Abe , Kazuko Nishimura , Hiroshi Kimura
发明人： Yutaka Abe , Kazuko Nishimura , Hiroshi Kimura
IPC分类号： H01L27/00
CPC分类号： H04N5/378 , H04N5/23241 , H04N5/3698
摘要： A solid-state imaging device includes pixels, arranged in a matrix, each of which converts light into a signal voltage. The solid-state imaging device also includes column signal lines, each of which is provided for corresponding one of columns, so that the signal voltage is provided to corresponding one of the column signal lines. Additionally, the solid-state imaging device includes AD converting units, each of which is provided for the corresponding one of the column signal lines, and is configured to convert the signal voltage into a digital signal. Each of the AD converting units includes a comparing unit generating an output signal indicating a greater voltage of the signal voltage and a reference voltage, and a counting unit counting a count value until logic of the output signal is inverted The solid-state imaging device further includes a suspending unit suspending power supply to the comparing units after the logic of the output signals is inverted.
摘要翻译：固态成像装置包括排列成矩阵的像素，每个像素将光转换成信号电压。固态成像装置还包括列信号线，其中每一列被提供给相应的一列，使得信号电压被提供给相应的列信号线。此外，固态成像装置包括AD转换单元，其各自被设置用于对应的一个列信号线，并且被配置为将信号电压转换为数字信号。 AD转换单元包括：比较单元，生成表示信号电压和参考电压的较大电压的输出信号;计数单元，计数输出信号的逻辑反转前的计数值。固态成像装置进一步包括在输出信号的逻辑反转之后将暂停电源暂停到比较单元的电源。

7. 发明授权

US08023541B2 Optical transmission circuit 有权
标题翻译：光传输电路
公开(公告)号：US08023541B2
公开(公告)日：2011-09-20
申请号：US12093076
申请日：2006-09-13
申请人： Kazuko Nishimura , Hiroshi Kimura
发明人： Kazuko Nishimura , Hiroshi Kimura
IPC分类号： H01S3/00 , H01S3/04
CPC分类号： H01S5/042 , H01S5/0612 , H01S5/068 , H01S5/183 , H03F3/08 , H04B10/504
摘要： An optical transmission circuit includes a light emitting device (10) having different temperature characteristics at low temperature and high temperature (e.g., a VCSEL (Vertical Cavity Surface Emitting Laser), differential switch transistors (M1, M2) for driving the light emitting device (10), the differential switch transistors having sources connected to each other and drains connected to the light emitting device (10) and a power supply, respectively, a bias current source (11) for causing a bias current to flow, a modulated current source (12) for causing a modulated current to flow, and a temperature compensation current source (20) for controlling currents of the bias current source (11) and the modulated current source (12) so as to compensate for both temperature characteristics at low temperature and temperature characteristics at high temperature of the light emitting device (10).
摘要翻译：光传输电路包括在低温和高温下具有不同温度特性的发光器件（例如，VCSEL（垂直腔表面发射激光器）），用于驱动发光器件的差分开关晶体管（M1，M2） 10），差分开关晶体管具有彼此连接的源极和连接到发光器件（10）的漏极和电源，分别用于使偏置电流流动的偏置电流源（11），调制电流源（12），用于使调制电流流动;以及温度补偿电流源（20），用于控制偏置电流源（11）和调制电流源（12）的电流，以便补偿低温下的两个温度特性和发光装置（10）的高温下的温度特性。

8. 发明授权

US06542038B2 PLL circuit having a phase offset detecting phase comparator 有权
标题翻译： PLL电路具有相位偏移检测相位比较器
公开(公告)号：US06542038B2
公开(公告)日：2003-04-01
申请号：US09986288
申请日：2001-11-08
申请人： Kazuko Nishimura , Toru Iwata
发明人： Kazuko Nishimura , Toru Iwata
IPC分类号： H03L700
CPC分类号： H03L7/087 , H03L7/081 , H03L7/0891 , H03L7/18
摘要： A phase-offset detecting phase comparator for comparing a reference signal and an auxiliary comparison signal which is a frequency-divided VCO output in terms of a phase to detect phase offset, and producing first and second delay control signals corresponding to the phase offset; a first delay element for adding delay to the auxiliary comparison signal by the first delay control signal to produce a comparison signal; a second delay element for adding delay to the VCO output by the second delay control signal to produce a PLL output; and a dummy frequency divider for adding delay corresponding to a frequency divider to the PLL output are provided.
摘要翻译：相位偏移检测相位比较器，用于比较基准信号和辅助比较信号，所述辅助比较信号是相位相位的分频VCO输出以检测相位偏移，并产生对应于相位偏移的第一和第二延迟控制信号; 第一延迟元件，用于通过第一延迟控制信号将延迟添加到辅助比较信号，以产生比较信号; 第二延迟元件，用于通过第二延迟控制信号向VCO输出添加延迟以产生PLL输出; 并且提供用于将对应于分频器的延迟添加到PLL输出的虚拟分频器。

9. 发明授权

US07499479B2 Laser diode driver circuit and optical communication device 有权
标题翻译：激光二极管驱动电路和光通讯器件
公开(公告)号：US07499479B2
公开(公告)日：2009-03-03
申请号：US11001075
申请日：2004-12-02
申请人： Kazuko Nishimura
发明人： Kazuko Nishimura
IPC分类号： H01S5/00
CPC分类号： H01S5/042 , H01S5/0683
摘要： A laser diode driver circuit includes: a current source for generating a laser drive current which drives a laser diode; a switch for switching the passage/non-passage of the laser drive current into the laser diode; an APC circuit for controlling the magnitude of the laser drive current such that the optical output power of the laser diode is equal to a predetermined value; a switch control circuit for controlling the operation of the switch according to an input signal; and a ringing suppression circuit connected to an output terminal through which the laser drive current is supplied to the laser diode, the filter circuit having a variable time constant. Herein, the switch control circuit and the ringing suppression circuit respectively switch the drive power to the switch and the time constant in conjunction with the control of the magnitude of the laser drive current by the APC circuit.
摘要翻译：激光二极管驱动电路包括：用于产生驱动激光二极管的激光驱动电流的电流源; 用于将激光驱动电流的通过/不通过切换到激光二极管的开关; APC电路，用于控制激光驱动电流的大小，使得激光二极管的光输出功率等于预定值; 开关控制电路，用于根据输入信号控制开关的操作; 以及连接到输出端子的振铃抑制电路，激光驱动电流通过该输出端子被提供给激光二极管，滤波器电路具有可变的时间常数。这里，开关控制电路和振铃抑制电路分别通过APC电路对激光器驱动电流的大小的控制分别切换到开关的驱动功率和时间常数。

10. 发明申请

US20080138086A1 Optical Transmitter Circuit 有权
标题翻译：光发射机电路
公开(公告)号：US20080138086A1
公开(公告)日：2008-06-12
申请号：US11793626
申请日：2005-08-17
申请人： Kazuko Nishimura , Hiroshi Kimura
发明人： Kazuko Nishimura , Hiroshi Kimura
IPC分类号： H04B10/04
CPC分类号： H01S5/042 , H01S5/0427
摘要： A light emitting element driving differential switch (2) includes first and second transistors (M1, M2). A third transistor (M3) is connected as an auxiliary switch in parallel to the first transistor (M1) whose drain is connected to a light emitting element (1). A third switch driving signal (IN3) is input to the third transistor (M3) to turn ON the third transistor (M3) at a slightly earlier point in time than when complementary switch driving signals (IN1, IN2) are input to the first and second transistors (M1, M2) to drive the first and second transistors (M1, M2). This improves the rising characteristics of the output from the light emitting element having a high power level.
摘要翻译：发光元件驱动差动开关（2）包括第一和第二晶体管（M 1，M 2）。第三晶体管（M 3）作为辅助开关并联连接到漏极连接到发光元件（1）的第一晶体管（M 1）。第三开关驱动信号（IN 3）被输入到第三晶体管（M 3），以在比互补开关驱动信号（IN 1，IN 2）为更早的时间点稍稍接通第三晶体管（M 3）输入到第一和第二晶体管（M 1，M 2）以驱动第一和第二晶体管（M 1，M 2）。这改善了具有高功率电平的发光元件的输出的上升特性。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式