公开(公告)号：US09001241B2

公开(公告)日：2015-04-07

申请号：US13413773

申请日：2012-03-07

申请人： Yoshio Hagihara

发明人： Yoshio Hagihara

IPC分类号： H04N3/14 ,  H04N5/335 ,  H04N5/378

CPC分类号： H04N5/378

摘要： An A/D conversion circuit includes a reference signal generation unit, a comparison unit, a delay circuit, a latch unit, an arithmetic circuit, a lower counter, and an upper counter including a second binary counter performing counting using the count clock based on one of the output signals constituting the first lower phase signal, performs counting to acquire a first upper count value, inverts values of respective bits constituting the first upper count value, performs counting using the count clock based on of the output signals constituting the second lower phase signal, and performs counting based on the second upper count clock to acquire a second upper count value, and having a data protection function for protecting an upper count value held by the second binary counter at a time of count clock switching, wherein digital data corresponding to a difference between the first and second analog signals is acquired.

摘要翻译： A / D转换电路包括参考信号产生单元，比较单元，延迟电路，锁存单元，运算电路，下计数器和上计数器，该计数器包括使用计数时钟进行计数的第二二进制计数器 构成第一下相位信号的输出信号中的一个执行计数以获取第一上计数值，对构成第一上计数值的各位的值进行反转，基于构成第二较低计数值的输出信号，使用计数时钟进行计数 并且基于第二上计数时钟执行计数以获取第二上计数值，并且具有用于在计数时钟切换时保护由第二二进制计数器保持的上计数值的数据保护功能，其中数字数据 对应于第一和第二模拟信号之间的差异被获取。

公开(公告)号：US08749680B2

公开(公告)日：2014-06-10

申请号：US13357031

申请日：2012-01-24

申请人： Yoshio Hagihara

发明人： Yoshio Hagihara

IPC分类号： H04N5/335 ,  H04N3/14

CPC分类号： H04N5/378 ,  H04N5/3658

摘要： An image pickup device may include an image pickup unit in which unit pixels having photoelectric conversion elements are arranged, the unit pixels outputting pixel signals, a reference signal generation unit, a comparison unit that includes a differential amplifier unit and a reset unit, the differential amplifier unit comparing a voltage of the first input terminal to a voltage of the second input terminal, a measurement unit that measures a comparison time of the comparison unit from a comparison start to a comparison end, and a change unit that changes the voltage of the first input terminal so that a voltage difference between the first input terminal and the second input terminal is set to a voltage at which a comparison operation by the comparison unit is ensured after a reset operation by the reset unit.

摘要翻译： 图像拾取装置可以包括其中布置有光电转换元件的单位像素的图像拾取单元，输出像素信号的单位像素，参考信号生成单元，包括差分放大器单元和复位单元的比较单元，差分 放大器单元，将第一输入端子的电压与第二输入端子的电压进行比较;测量单元，其测量比较单元从比较开始到比较结束的比较时间;以及改变单元， 第一输入端子，使得第一输入端子和第二输入端子之间的电压差被设置为在由复位单元进行的复位操作之后确保比较单元的比较操作的电压。

公开(公告)号：US08421665B2

公开(公告)日：2013-04-16

申请号：US12991275

申请日：2009-05-07

申请人： Yoshio Hagihara ,  Yasunari Harada

发明人： Yoshio Hagihara ,  Yasunari Harada

IPC分类号： H03M1/50

CPC分类号： H03M1/502 ,  H03K3/0315 ,  H03M1/14

摘要： An A/D conversion circuit includes: a pulse transit circuit into which either a power supply or current source and also a pulse signal is input, and through which the pulse signal transits; a transit position detection section that detects a transit position of the pulse signal within the pulse transit circuit, and outputs data in accordance with the transit position; and a digital data creation section that, based on the data output by the transit position detection section, creates digital data that corresponds to the size of the power supply or current source. The pulse transit circuit is formed by a plurality of inverter circuits that are joined together in series, and the plurality of inverter circuits are formed by identical logical elements in which delay times between input signals and output signals change in accordance with the size of the power supply or current source. In the pulse transit circuit, a start-up signal that causes the transiting of the pulse signal to commence is input into one of the plurality of inverter circuits, and the transit position detection section detects the transit position of the pulse signal within the pulse transit circuit based on the output signals from each one of the plurality of inverter circuits.

摘要翻译： A / D转换电路包括：脉冲传递电路，其中输入电源或电流源以及脉冲信号，脉冲信号通过该电路输入; 中继位置检测部，检测脉冲传递电路内的脉冲信号的转接位置，并根据中途位置输出数据; 以及数字数据创建部，其基于由所述中转位置检测部输出的数据，生成与所述电源或电流源的尺寸对应的数字数据。 脉冲传输电路由串联连接在一起的多个反相器电路形成，多个反相器电路由相同的逻辑元件形成，其中输入信号和输出信号之间的延迟时间根据功率的大小而变化 供应或电流源。 在脉冲传输电路中，使脉冲信号的转移开始的启动信号输入到多个逆变器电路中的一个，并且转接位置检测部检测脉冲输送中脉冲信号的通过位置 基于来自多个逆变器电路中的每一个的输出信号的电路。

公开(公告)号：US20120138772A1

公开(公告)日：2012-06-07

申请号：US13291219

申请日：2011-11-08

申请人： Yoshio Hagihara

发明人： Yoshio Hagihara

IPC分类号： H01L27/146

CPC分类号： H04N5/3765 ,  H04N5/37455

摘要： An image pickup device may include an image pickup unit in which a plurality of pixels are arranged, the plurality of pixels outputting a first and second pixel signals, and an analog-to-digital (AD) conversion circuit that outputs a digital difference signal. The AD conversion circuit may include a delay circuit that has a plurality of delay devices, the delay circuit outputting a first and second lower phase signals, a latch unit that latches the first and second lower phase signals, a lower counting unit that generates a first and second lower count signals, the lower counting unit generating and outputting a lower difference signal, and a higher counting unit that generates a higher difference signal, subtracts a predetermined number from the higher difference signal, or adds the predetermined number to the higher difference signal, and outputs the higher difference signal after subtraction or addition processing.

摘要翻译： 图像拾取装置可以包括其中布置多个像素的图像拾取单元，输出第一和第二像素信号的多个像素，以及输出数字差分信号的模拟数字（AD）转换电路。 AD转换电路可以包括延迟电路，该延迟电路具有多个延迟器件，延迟电路输出第一和第二较低相位信号，锁存单元锁存第一和第二较低相位信号;下计数单元，其产生第一 和第二较低计数信号，下计数单元产生并输出较低差信号，以及产生较高差信号的较高计数单元，从较高差信号中减去预定数，或将预定数加到较高差信号 ，并在减法或加法处理之后输出较高的差分信号。

公开(公告)号：US20120105694A1

公开(公告)日：2012-05-03

申请号：US13343129

申请日：2012-01-04

申请人： Yoshio Hagihara

发明人： Yoshio Hagihara

IPC分类号： H04N5/335 ,  H03M1/12

CPC分类号： H04N5/378 ,  H03M1/1019 ,  H03M1/502

摘要： Disclosed is a time AD converter which is provided with an annular delay circuit, a digital signal generation unit, and an annular delay circuit control unit. The annular delay circuit has n delay units (where n is a natural number equal to or larger than 2). The digital signal generation unit generates a digital signal corresponding to an analog signal by using an output of the annular delay circuit. The annular delay circuit control unit controls a current which is input to the n delay units in accordance with an external environmental signal.

摘要翻译： 公开了一种设置有环形延迟电路，数字信号生成单元和环形延迟电路控制单元的时间AD转换器。 环形延迟电路具有n个延迟单元（其中n是等于或大于2的自然数）。 数字信号产生单元通过使用环形延迟电路的输出产生与模拟信号相对应的数字信号。 环形延迟电路控制单元根据外部环境信号控制输入到n个延迟单元的电流。

公开(公告)号：US20120043456A1

公开(公告)日：2012-02-23

申请号：US13285545

申请日：2011-10-31

申请人： Yoshio Hagihara

发明人： Yoshio Hagihara

IPC分类号： H01L27/146

CPC分类号： H04N5/378 ,  H04N5/3577

摘要： A solid-state image pickup device may include: an image pickup unit in which a plurality of pixels are arranged in a matrix; a sample-and-hold unit having a switch element and a capacitance element; a frequency conversion unit in which a plurality of stages of inverting circuits are connected, the pixel signal is supplied to the first power supply terminal, and a start signal for starting clock generation and an output signal from the inverting circuit of a predetermined stage are input to one of the inverting circuits; a counting unit that counts the clock output from the frequency conversion unit; and a buffer circuit provided between a first terminal of the capacitance element connected to the switch element and the first power supply terminal, wherein a second terminal of the capacitance element is connected to the second power supply terminal.

摘要翻译： 固态图像拾取装置可以包括：其中多个像素被布置成矩阵的图像拾取单元; 具有开关元件和电容元件的采样保持单元; 一个频率转换单元，其中连接有多级反相电路，将像素信号提供给第一电源端，并且输入用于开始时钟产生的起始信号和来自预定级的反相电路的输出信号 到一个反相电路; 计数单元，对来自变频单元的时钟输出进行计数; 以及缓冲电路，设置在与开关元件连接的电容元件的第一端子与第一电源端子之间，其中电容元件的第二端子连接到第二电源端子。

公开(公告)号：US20090316029A1

公开(公告)日：2009-12-24

申请号：US12489797

申请日：2009-06-23

申请人： Yoshio Hagihara

发明人： Yoshio Hagihara

IPC分类号： H04N5/335

CPC分类号： H04N5/378 ,  H04N5/357

摘要： A solid-state image pickup apparatus includes: an image pickup portion in which are arranged a plurality of pixels with a photo-electric conversion element, the pixels which generate and output a signal in accordance with the intensity of an incident electromagnetic wave; a frequency conversion portion that includes a link circuit in which a plurality of inversion circuits with a first terminal and a second terminal are linked in a ring, each of the inversion circuits having a varying delay time from an input signal to an output signal based on the voltage difference between the voltage supplied to the first terminal and the voltage supplied to the second terminal, and the frequency conversion portion which generate clock pulses at a frequency based on the voltage difference; a count portion which counts the clock pulses generated by the frequency conversion portion; and a transistor including: a third terminal to which is input a predetermined voltage; a fourth terminal connected to the first terminals; and a fifth terminal to which are input signals from the pixels, the transistor controlling a current that is passed between the third terminal and the fourth terminal based on a signal that is input to the fifth terminal.

摘要翻译： 固态图像拾取装置包括：图像拾取部分，其中多个像素被配置有光电转换元件，所述像素根据入射电磁波的强度产生和输出信号; 频率转换部分，其包括链路电路，其中具有第一端子和第二端子的多个反相电路以环形连接，每个反相电路具有从输入信号到输出信号的变化的延迟时间，基于 提供给第一端子的电压与提供给第二端子的电压之间的电压差以及基于电压差产生频率的时钟脉冲的频率转换部分; 计数部，其对由所述变频部生成的时钟脉冲进行计数; 以及晶体管，包括：输入预定电压的第三端子; 连接到第一端子的第四端子; 以及第五端子，来自所述像素的输入信号，所述晶体管基于输入到所述第五端子的信号来控制在所述第三端子与所述第四端子之间通过的电流。

公开(公告)号：US20090310002A1

公开(公告)日：2009-12-17

申请号：US12484502

申请日：2009-06-15

申请人： Yoshio Hagihara

发明人： Yoshio Hagihara

IPC分类号： H04N5/335

CPC分类号： H04N5/378 ,  H03K3/0315 ,  H03K5/133 ,  H03K27/00 ,  H03K2005/00058 ,  H03M1/186 ,  H03M1/60 ,  H04N5/3575

摘要： A frequency converting unit 101 includes a connection circuit for connecting a plurality of inverting circuits through which a delay time between an input signal and an output signal is changed according to a magnitude of the signal output by the image pickup unit, and one or a plurality of switch elements which are connected between an output terminal of the inverting circuit and an input terminal of another inverting circuit not adjacent to the inverting circuit, and generates a clock signal having a frequency according to the connection circuit. The control unit 20 controls the switch elements included in the frequency converting unit 101 to open and close. The count unit 103 counts the clock signal generated by the frequency converting unit.

摘要翻译： 频率转换单元101包括用于连接多个反相电路的连接电路，通过该连接电路，输入信号和输出信号之间的延迟时间根据由图像拾取单元输出的信号的大小而改变，并且一个或多个 开关元件连接在反相电路的输出端子和不与反相电路相邻的另一反相电路的输入端子之间，并根据连接电路生成具有频率的时钟信号。 控制单元20控制包括在频率转换单元101中的开关元件的打开和关闭。 计数单元103对由频率转换单元生成的时钟信号进行计数。

公开(公告)号：US20080001193A1

公开(公告)日：2008-01-03

申请号：US11890216

申请日：2007-08-03

申请人： Yoshio Hagihara ,  Kenji Takada

发明人： Yoshio Hagihara ,  Kenji Takada

IPC分类号： H01L31/062

CPC分类号： H04N5/35518 ,  H01L27/14609 ,  H01L27/14643 ,  H04N5/37452

摘要： In a solid-state image-sensing device, when image sensing is performed, in each pixel, MOS transistors T1 and T5 are turned on and a MOS transistor T6 is turned off so that a MOS transistor T2 operates in a subthreshold region. When resetting is preformed, in each pixel, the MOS transistors T1 and T5 are turned off and the MOS transistor T6 is turned on so that the gate voltage of the MOS transistor T2 is kept constant. In this state, the MOS transistor T2 is brought first into a conducting state and then, by turning a signal φVPS to a high level, into a cut-off state. This permits a signal proportional to the threshold value of the MOS transistor T2 to be output as compensation data.

摘要翻译： 在固态图像感测装置中，当执行图像感测时，在每个像素中，MOS晶体管T 1和T 5导通，并且MOS晶体管T 6截止，使得MOS晶体管T 2工作在亚阈值 地区。 当执行复位时，在每个像素中，MOS晶体管T 1和T 5截止，并且MOS晶体管T 6导通，使得MOS晶体管T 2的栅极电压保持恒定。 在这种状态下，首先使MOS晶体管T 2进入导通状态，然后使信号phiVPS变为高电平成为截止状态。 这允许输出与MOS晶体管T 2的阈值成比例的信号作为补偿数据。

公开(公告)号：US20060119723A1

公开(公告)日：2006-06-08

申请号：US11341313

申请日：2006-01-27

申请人： Yoshio Hagihara

发明人： Yoshio Hagihara

IPC分类号： H04N5/335

CPC分类号： H04N5/35518

摘要： In a solid-state image-sensing device, when an image sensing operation is performed in each pixel, a MOS transistor T1 is turned on and a MOS transistor T4 is turned off to make a MOS transistor T2 operate in a subthreshold region. When a reset operation is performed in each pixel, the MOS transistor T1 is turned off and the MOS transistor T4 is turned on to feed a constant voltage to the gate and drain of the MOS transistor T2. Then, the MOS transistor T4 is turned off, then the voltage at the node “a” is reset, and then a pulse signal φV is fed to a MOS transistor T5 to obtain an output. By using the thus obtained output as compensation data, variations in sensitivity among individual pixels are reduced.

摘要翻译： 在固态摄像装置中，当在每个像素中执行图像感测操作时，MOS晶体管T 1导通，并且MOS晶体管T 4截止，使得MOS晶体管T2工作在亚阈值区域 。 当在每个像素中执行复位操作时，MOS晶体管T 1截止，并且MOS晶体管T 4导通，以向MOS晶体管T 2的栅极和漏极施加恒定电压。然后，MOS晶体管T 4被关闭，则节点“a”处的电压被复位，然后将脉冲信号phiV馈送到MOS晶体管T 5以获得输出。 通过使用这样得到的输出作为补偿数据，减少各个像素之间的灵敏度的变化。