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1. 发明授权

US07170556B2 Image sensor providing improved image quality 有权
标题翻译：图像传感器提供更好的图像质量
公开(公告)号：US07170556B2
公开(公告)日：2007-01-30
申请号：US10618851
申请日：2003-07-15
申请人： Masatoshi Kokubun , Toshitaka Mizuguchi , Jun Funakoshi , Hiroshi Kobayashi , Katsuyosi Yamamoto
发明人： Masatoshi Kokubun , Toshitaka Mizuguchi , Jun Funakoshi , Hiroshi Kobayashi , Katsuyosi Yamamoto
IPC分类号： H04N5/217
CPC分类号： H04N5/3598
摘要： An image sensor for capturing image, has: a plurality of pixels arranged in a matrix each including a photoelectric conversion element for generating current according to received light intensity and a reset transistor for resetting a node of the photoelectric conversion element to a reset potential; and a sample hold circuit for sample holding a pixel potential according to the potential of the node of the pixel. And the sample hold circuit outputs the differential potential, between a first pixel potential at an end of the integration period after a first reset operation of the pixel and a second pixel potential at an end of a reset noise read period after a second reset operation after the integration period, as a pixel signal. Also in the sample hold circuit, when the second pixel potential during the reset noise read period exceeds a predetermined threshold level, the second pixel potential is set to a predetermined reference potential.
摘要翻译：一种用于拍摄图像的图像传感器，具有：以矩阵形式排列的多个像素，每个像素包括根据接收光强度产生电流的光电转换元件和用于将光电转换元件的节点复位到复位电位的复位晶体管; 以及用于根据像素的节点的电位保持像素电位的样本的采样保持电路。并且采样保持电路在第一复位操作之后的积分周期结束时的第一像素电位和第二复位操作之后的复位噪声读取周期结束时的第二像素电位之间输出差分电位积分期，作为像素信号。此外，在采样保持电路中，当复位噪声读取周期期间的第二像素电位超过预定阈值电平时，将第二像素电位设置为预定参考电位。

2. 发明授权

US06888488B2 A/D converter with reduced power consumption 失效
标题翻译： A / D转换器，功耗降低
公开(公告)号：US06888488B2
公开(公告)日：2005-05-03
申请号：US10304756
申请日：2002-11-27
申请人： Hiroshi Takakusagi , Toshitaka Mizuguchi , Chikara Tsuchiya , Katsuyosi Yamamoto
发明人： Hiroshi Takakusagi , Toshitaka Mizuguchi , Chikara Tsuchiya , Katsuyosi Yamamoto
IPC分类号： H03M1/36 , H03K5/08 , H03K5/24 , H03M1/00
CPC分类号： H03K5/249 , H03M1/002 , H03M1/36
摘要： An A/D converter includes a plurality of comparators, each of which samples an analog input potential during a first period, and compares the analog input potential with a reference potential during a second period, an encoder which encodes comparison results obtained by the comparators, and a control signal supply unit which generates one or more control signals that define the first period and the second period such as to make a duration of the first period different from a duration of the send period, and supplies the one or more control signals to the plurality of comparators.
摘要翻译： A / D转换器包括多个比较器，每个比较器在第一周期期间采样模拟输入电位，并且在第二周期期间将模拟输入电位与参考电位进行比较，编码器编码由比较器获得的比较结果，以及控制信号提供单元，其产生定义第一周期和第二周期的一个或多个控制信号，以使得第一周期的持续时间不同于发送周期的持续时间，并将一个或多个控制信号提供给多个比较器。

3. 发明授权

US5495247A Analog to digital convertor 失效
标题翻译：模数转换器
公开(公告)号：US5495247A
公开(公告)日：1996-02-27
申请号：US109515
申请日：1993-08-20
申请人： Katsuyosi Yamamoto , Toshitaka Mizuguchi
发明人： Katsuyosi Yamamoto , Toshitaka Mizuguchi
IPC分类号： H03M1/20 , H03M1/36
CPC分类号： H03M1/204 , H03M1/365
摘要： There are provided n signal processing units for sampling an analog signal based on n [references] reference voltages, k intermediate signal processing units for comparing two intermediate signals outputted from two adjacent signal processing units in n signal processing units, and an encoder for coding logical output values of the signal processing unit and the intermediate signal processing unit. One signal processing unit includes a differential amplifier, a comparison circuit and logic circuit, and one intermediate signal processing unit includes another comparison circuit and another logic circuit. As a result, when an analog signal is applied to the signal processing unit, a reciprocal of a potential difference between a reference voltage and an analog signal is increased by a gain [times] G, and [the] an intermediate signal is outputted to the comparison circuit of the intermediate signal processing unit. Further, comparison signals of the comparison circuit of the signal processing unit and the comparison circuit of the intermediate signal processing unit are quantized by the logic circuit of the signal processing unit, and comparison signals of the comparison circuit of the intermediate signal processing unit and the comparison circuit of the signal processing unit are quantized by the logic circuit of the intermediate signal processing unit. With this, n+k logical output signals quantized by the logic circuits of n signal processing units and the logic circuits of k intermediate signal processing units are coded by the encoder, thus obtaining a digital output signal in N bits.
摘要翻译：提供了n个信号处理单元，用于基于n个参考电压对模拟信号进行采样，k个用于比较在n个信号处理单元中从两个相邻信号处理单元输出的两个中间信号的中间信号处理单元和用于编码逻辑的编码器信号处理单元和中间信号处理单元的输出值。一个信号处理单元包括差分放大器，比较电路和逻辑电路，一个中间信号处理单元包括另一个比较电路和另一个逻辑电路。结果，当模拟信号被施加到信号处理单元时，参考电压和模拟信号之间的电位差的倒数增加了增益[times] G，并且将中间信号输出到中间信号处理单元的比较电路。此外，信号处理单元的比较电路和中间信号处理单元的比较电路的比较信号由信号处理单元的逻辑电路量化，并且中间信号处理单元的比较电路和信号处理单元的比较电路由中间信号处理单元的逻辑电路量化。由此，由n个信号处理单元的逻辑电路和k个中间信号处理单元的逻辑电路量化的n + k逻辑输出信号由编码器编码，从而获得N位的数字输出信号。

4. 发明授权

US07522199B2 Imaging device with light-shielding region, control method thereof and CMOS image sensor with light-shielding region 失效
标题翻译：具有遮光区域的成像装置，其控制方法和具有遮光区域的CMOS图像传感器
公开(公告)号：US07522199B2
公开(公告)日：2009-04-21
申请号：US10995394
申请日：2004-11-24
申请人： Jun Funakoshi , Katsuyoshi Yamamoto , Asao Kokubo , Toshitaka Mizuguchi , Tsuyoshi Higuchi
发明人： Jun Funakoshi , Katsuyoshi Yamamoto , Asao Kokubo , Toshitaka Mizuguchi , Tsuyoshi Higuchi
IPC分类号： H04N9/64
CPC分类号： H04N5/3658 , H04N5/378
摘要： An imaging device provided with a read circuit in which a light-shielding region is formed in a part of an image region where a plurality of optical/electrical conversion devices is two-dimensionally arrayed in the row and column directions and which converts a optically detected signal outputted from each of the optical/electrical conversion devices for each of the column into a digital signal, comprises a storage device for storing the outputted digital signal outputted in relation with the optical/electrical conversion device in the light-shielding region and a difference calculation device for calculating a difference between the outputted digital signal in relation with the optical/electrical conversion device in a light-receiving region except the light-shielding region and a value stored in the storage device.
摘要翻译：一种具有读取电路的成像装置，其中在多个光/电转换装置在行和列方向上二维排列的图像区域的一部分中形成有遮光区域，并且将光学检测从每个列的每个光/电转换装置输出的信号为数字信号，包括存储装置，用于存储在光屏蔽区域中输出的与光/电转换装置相关的数字信号，计算装置，用于计算除光屏蔽区域之外的光接收区域中与光/电转换装置相关的输出数字信号之间的差和存储在存储装置中的值。

5. 发明授权

US07075474B2 Ramp waveform generation circuit, analog/digital conversion circuit, imaging device and control method of imaging device 失效
公开(公告)号：US07075474B2
公开(公告)日：2006-07-11
申请号：US10998728
申请日：2004-11-30
申请人： Seiji Yamagata , Jun Funakoshi , Tsuyoshi Higuchi , Toshitaka Mizuguchi
发明人： Seiji Yamagata , Jun Funakoshi , Tsuyoshi Higuchi , Toshitaka Mizuguchi
IPC分类号： H03M1/56
CPC分类号： H03M1/0619 , H03M1/0845 , H03M1/56
摘要： A ramp waveform generation circuit which comprises a first reference power supply, and supplies a ramp waveform signal to an analog/digital conversion circuit further comprises a connection circuit for reflecting the amount of fluctuation of the output potential of a second reference power supply which is installed in a noise elimination circuit for eliminating the noise of an analog signal inputted to the analog/digital conversion circuit in the output potential of the first reference power supply.

6. 发明申请

US20060170794A1 Imaging device 失效
公开(公告)号：US20060170794A1
公开(公告)日：2006-08-03
申请号：US11133386
申请日：2005-05-20
申请人： Tsuyoshi Higuchi , Jun Funakoshi , Seiji Yamagata , Toshitaka Mizuguchi , Katsuyoshi Yamamoto
发明人： Tsuyoshi Higuchi , Jun Funakoshi , Seiji Yamagata , Toshitaka Mizuguchi , Katsuyoshi Yamamoto
IPC分类号： H04N5/217
CPC分类号： H04N5/3598 , H03F3/087 , H04N5/3575 , H04N5/363
摘要： A second source follower circuit of a reference voltage generator includes a transistor having the same characteristics as a first source follower circuit of a pixel. Accordingly, the second source follower circuit can generate a second reference voltage according to the change in characteristics of the first source follower circuit. A noise voltage switching circuit outputs a first voltage as a noise voltage to a pixel signal generator when the noise voltage is equal to or lower than the second reference voltage. In a reset state, the noise voltage and the second reference voltage always have a predetermined voltage difference. Therefore, deterioration in image quality can be prevented even when capturing a subject having high brightness. Since a trimming circuit or the like selecting any one of a plurality of reference voltages according to characteristics of a formed transistor becomes unnecessary, the cost of an imaging device can be reduced.

7. 发明申请

US20060001753A1 Imaging device, control method thereof and CMOS image sensor 失效
标题翻译：成像装置及其控制方法和CMOS图像传感器
公开(公告)号：US20060001753A1
公开(公告)日：2006-01-05
申请号：US10995394
申请日：2004-11-24
申请人： Jun Funakoshi , Katsuyoshi Yamamoto , Asao Kokubo , Toshitaka Mizuguchi , Tsuyoshi Higuchi
发明人： Jun Funakoshi , Katsuyoshi Yamamoto , Asao Kokubo , Toshitaka Mizuguchi , Tsuyoshi Higuchi
IPC分类号： H04N5/335
CPC分类号： H04N5/3658 , H04N5/378
摘要： An imaging device provided with a read circuit in which a light-shielding region is formed in a part of an image region where a plurality of optical/electrical conversion devices is two-dimensionally arrayed in the row and column directions and which converts a optically detected signal outputted from each of the optical/electrical conversion devices for each of the column into a digital signal, comprises a storage device for storing the outputted digital signal outputted in relation with the optical/electrical conversion device in the light-shielding region and a difference calculation device for calculating a difference between the outputted digital signal in relation with the optical/electrical conversion device in a light-receiving region except the light-shielding region and a value stored in the storage device.
摘要翻译：一种具有读取电路的成像装置，其中在多个光/电转换装置在行和列方向上二维排列的图像区域的一部分中形成有遮光区域，并且将光学检测从每个列的每个光/电转换装置输出的信号为数字信号，包括存储装置，用于存储在光屏蔽区域中输出的与光/电转换装置相关的数字信号，计算装置，用于计算除光屏蔽区域之外的光接收区域中与光/电转换装置相关的输出数字信号之间的差和存储在存储装置中的值。

8. 发明申请

US20060001749A1 Solid-state imaging apparatus and control method 有权
标题翻译：固态成像装置及控制方法
公开(公告)号：US20060001749A1
公开(公告)日：2006-01-05
申请号：US10998587
申请日：2004-11-30
申请人： Tsuyoshi Higuchi , Jun Funakoshi , Seiji Yamagata , Toshitaka Mizuguchi , Katsuyoshi Yamamoto
发明人： Tsuyoshi Higuchi , Jun Funakoshi , Seiji Yamagata , Toshitaka Mizuguchi , Katsuyoshi Yamamoto
IPC分类号： H04N5/217 , H04N3/14 , H04N5/335 , H04N9/77
CPC分类号： H04N5/3591 , H04N5/3575
摘要： A method for controlling a solid-state imaging apparatus, which includes a plurality of pixels, includes selecting a resetting element of one of the pixels, resetting a detecting unit connected to the pixel, transmitting to a detecting unit, an electric charge accumulated after photoelectric conversion performed by a photoelectric converting element of the pixel, and providing control to set a second end of a transmitting control signal line to an open state.
摘要翻译：一种用于控制包括多个像素的固态成像装置的方法，包括选择一个像素的复位元件，复位连接到像素的检测单元，向检测单元发送在光电后累积的电荷由像素的光电转换元件执行的转换，并且提供将发送控制信号线的第二端设置为打开状态的控制。

9. 发明授权

US07639290B2 Data read circuit of solid-state imaging device, imaging apparatus, and data read method for solid-state imaging device 失效
标题翻译：固态成像装置的数据读取电路，成像装置和固态成像装置的数据读取方法
公开(公告)号：US07639290B2
公开(公告)日：2009-12-29
申请号：US11138483
申请日：2005-05-27
申请人： Tsuyoshi Higuchi , Jun Funakoshi , Seiji Yamagata , Toshitaka Mizuguchi , Katsuyoshi Yamamoto
发明人： Tsuyoshi Higuchi , Jun Funakoshi , Seiji Yamagata , Toshitaka Mizuguchi , Katsuyoshi Yamamoto
IPC分类号： H04N9/64
CPC分类号： H04N5/3575 , H04N5/378
摘要： A differential amplifier has a first input terminal to which a voltage of a noise signal of the solid-state imaging device is supplied and a second input terminal to which a voltage of a temporary data signal having the noise signal of the solid-state imaging device superposed thereon is supplied. The differential amplifier inverts an output signal when a magnitude relationship in voltage between the first and second input terminals becomes reverse. A measurement circuit measures a variation amount of a voltage of the second input terminal from when the voltage of the second input terminal begins to vary in a direction to reverse the magnitude relationship to when the output signal of the differential amplifier is inverted, and outputs a measurement result as a digital value indicating a voltage of a real data signal obtained by removing the noise signal from the temporary data signal.
摘要翻译：差分放大器具有第一输入端，固态成像器件的噪声信号的电压被提供给该第一输入端;第二输入端，具有固态成像器件的噪声信号的临时数据信号的电压叠加在其上。当第一和第二输入端之间的电压的大小关系变为反相时，差分放大器反转输出信号。测量电路测量第二输入端子的电压从第二输入端子的电压开始变化的方向的变化量，以使得与差分放大器的输出信号反相时的幅度关系相反，测量结果作为数字值，指示通过从临时数据信号中去除噪声信号而获得的实际数据信号的电压。

10. 发明申请

US20060001750A1 Differential comparator, analog/digital conversion apparatus and imaging apparatus 有权
标题翻译：差分比较器，模拟/数字转换装置和成像装置
公开(公告)号：US20060001750A1
公开(公告)日：2006-01-05
申请号：US11008292
申请日：2004-12-10
申请人： Toshitaka Mizuguchi , Jun Funakoshi , Seiji Yamagata , Tsuyoshi Higuchi
发明人： Toshitaka Mizuguchi , Jun Funakoshi , Seiji Yamagata , Tsuyoshi Higuchi
IPC分类号： H04N5/217 , H03M1/12 , H03M1/06 , H04N3/14 , H04N5/335
CPC分类号： H04N5/335 , H03M1/0607
摘要： A differential comparator which outputs positive and/or negative logic signals to an output terminal according to the coincidence/non-coincidence of first and second input signal levels inputted to first and second input terminals, respectively, comprises an offset cancel function composed of an offset capacitor device provided on the differential comparator side of the first and second terminals, a first switch for short-circuiting the first and second input terminals in such a way as to form a closed loop including the offset capacitor device, and a second switch for short-circuiting both the connection point between the offset capacitor device and the differential comparator, and the output terminal.
摘要翻译：根据输入到第一和第二输入端的第一和第二输入信号电平的一致/非重合分别将正和/或负逻辑信号输出到输出端的差分比较器包括偏移消除函数，设置在所述第一和第二端子的差分比较器侧的电容器装置，用于使所述第一和第二输入端子短路以形成包括所述偏移电容器装置的闭环的第一开关，以及用于短路的第二开关 - 电容偏置电容器件和差分比较器之间的连接点以及输出端子。

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