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1. 发明授权

US07486322B2 Light sensor circuit having source/drain voltage changing-over circuit to minimize afterglow 失效
标题翻译：具有源/漏电压转换电路的光传感器电路，以最小化余辉
公开(公告)号：US07486322B2
公开(公告)日：2009-02-03
申请号：US10471522
申请日：2002-03-01
申请人： Sukeyuki Shinotsuka , Katsuhiko Takebe
发明人： Sukeyuki Shinotsuka , Katsuhiko Takebe
IPC分类号： H04N5/335 , H04N3/14 , G01J1/44
CPC分类号： H04N5/35518 , G01J1/44 , G01J1/46 , G01J2001/448 , H04N5/35509 , H04N5/378
摘要： Disclosed is a light sensor circuit which works by producing in a photoelectric converting element a photo current proportional to a quantity of incident light falling thereon, converting the photo current into a voltage signal by using a threshold region characteristic of a transistor with a logarithmic output characteristic in a weak inverse state and producing a sensor output corresponding to the voltage signal. The light sensor circuit is provided with an initializing means for removing an electric charge remaining in a parasite capacitor of the photoelectric converting element before detecting light by the same element, thereby achieving a wide dynamic range and obtaining a sensor signal with no afterglow even if it works with a small quantity of incident light.
摘要翻译：公开了一种光传感器电路，其通过在光电转换元件中产生与入射光的入射光成比例的光电流而工作，通过使用具有对数输出特性的晶体管的阈值区域特性将光电流转换为电压信号处于弱反向状态并产生对应于电压信号的传感器输出。光传感器电路设置有初始化装置，用于在由同一元件检测光之前去除光电转换元件的寄生电容器中剩余的电荷，从而实现宽的动态范围，并获得没有余辉的传感器信号，即使工作与少量的入射光。

2. 发明授权

US07176435B2 Image sensor with a voltage switching circuit for low afterglow 失效
标题翻译：具有低余辉电压开关电路的图像传感器
公开(公告)号：US07176435B2
公开(公告)日：2007-02-13
申请号：US09848471
申请日：2001-05-03
申请人： Sukeyuki Shinotsuka , Nobuhiro Fueki , Jiro Kurita , Katsuhiko Takebe
发明人： Sukeyuki Shinotsuka , Nobuhiro Fueki , Jiro Kurita , Katsuhiko Takebe
IPC分类号： H03F3/08 , H04N3/14
CPC分类号： H04N5/35518 , H04N5/2175 , H04N5/363
摘要： Disclosed is an image sensor consisting of light sensor circuits arranged to form an array of pixels, each of which produces in a photoelectric converting element a sensor current proportional to the quantity of light falling thereon and converts the sensor current into a voltage signal by a MOS type transistor with a logarithmic output characteristic in a weak inverse state, wherein a means for changing over a drain voltage of the transistor for each light sensor circuit to a value lower than a normal value for a specified time to remove a charge accumulated in a parasitic capacity of the photoelectric converting element to initialize the circuit before detecting a light signal. The image sensor can obtain a voltage signal corresponding to the quantity of incident light even if the sensor current was rapidly changed, thereby eliminating the possibility of occurrence of afterglow of each pixel even at a small quantity of incident light.
摘要翻译：公开了一种由光传感器电路组成的图像传感器，其被布置成形成像素阵列，每个像素阵列在光电转换元件中产生与其上的光量成比例的传感器电流，并将传感器电流通过MOS转换成电压信号具有弱反相状态的对数输出特性的晶体管，其中，用于将每个光传感器电路的晶体管的漏极电压切换到低于正常值的值达指定时间的装置，以去除寄生在其中的电荷光电转换元件在检测光信号之前初始化电路的容量。即使传感器电流迅速变化，图像传感器也可以获得与入射光量相对应的电压信号，从而即使在少量入射光下也能消除每个像素的余辉的可能性。

3. 发明授权

US06191408B1 Photosensor signal processing apparatus 失效
标题翻译：光传感器信号处理装置
公开(公告)号：US06191408B1
公开(公告)日：2001-02-20
申请号：US09293468
申请日：1999-04-13
申请人： Sukeyuki Shinotsuka , Katsuhiko Takebe , Toshiaki Tanaka , Toshio Imai
发明人： Sukeyuki Shinotsuka , Katsuhiko Takebe , Toshiaki Tanaka , Toshio Imai
IPC分类号： H01L3114
CPC分类号： H04N5/35518
摘要： A photosensor signal processing apparatus is used in combination with an image sensor comprised of a matrix of pixels or photosensors capable of producing an output as a linear function and a logarithmic function of incident illumination. The apparatus includes a correction data storage device which stores therein a set of data about the respective photosensors for the correction of individual outputs of the photosensors, and a correcting device for correcting the respective output values of the photosensors on the basis of the correction data. Thus, even when the individual outputs of the photosensors generate have different characteristics, the output characteristic variation between the photosensors are corrected such that the output characteristics of all the photosensors agree with a reference output characteristic. A fixed pattern noise resulting from the pixel-to-pixel output characteristic variation can be suppressed.
摘要翻译：光传感器信号处理装置与由能够产生作为线性函数的输出和入射照明的对数函数的像素矩阵或光电传感器组成的图像传感器组合使用。该装置包括校正数据存储装置，其中存储有关用于校正光电传感器的各个输出的相应光电传感器的一组数据;以及校正装置，用于根据校正数据校正光电传感器的相应输出值。因此，即使产生光电传感器的各个输出具有不同的特性，校正光电传感器之间的输出特性变化，使得所有光电传感器的输出特性与参考输出特性一致。可以抑制由像素到像素输出特性变化产生的固定图案噪声。

4. 发明授权

US06958775B1 Photo-sensor circuit with shutter function and operating method 失效
标题翻译：具有快门功能和操作方式的光电传感器电路
公开(公告)号：US06958775B1
公开(公告)日：2005-10-25
申请号：US09710196
申请日：2000-11-10
申请人： Sukeyuki Shinotsuka , Katsuhiko Takebe
发明人： Sukeyuki Shinotsuka , Katsuhiko Takebe
IPC分类号： G01J1/46 , H01L27/146 , H04N1/028 , H04N5/335 , H04N5/341 , H04N5/353 , H04N5/355 , H04N5/357 , H04N5/369 , H04N5/374 , H04N5/3745 , H04N5/376 , H04N5/378 , H04N3/14
CPC分类号： G01J1/46
摘要： A photo-sensor circuit according to an embodiment of the present invention comprises a photo-detecting element (PD) for detecting a light signal and converting the same signal into an electric signal, a first MOS transistor (QT) for charging and discharging parasitic capacitance (C1), a capacitor (C2) for accumulating a terminal voltage of the photo-detecting element as a pixel signal, a second MOS transistor (Q2) for transferring a parasitic capacitance charge from the photo-detecting element to the capacitor (C2), a third MOS transistor (Q3) for amplifying the terminal voltage of the capacitor and a fourth MOS transistor (Q4) for selectively outputting an amplified pixel signal. In the above structure, the first MOS transistor and the second MOS transistor are turned ON for a certain period of time before accumulation of a pixel signal to equalize terminal voltages of the photo-detecting element and the capacitor by charging and discharging the parasitic capacitance of the photo-detecting element and the capacitor, the second MOS transistor is turned OFF and the capacitor is open after a certain period of time of accumulation of the pixel signal and then the fourth MOS transistor is switched ON. This photo-sensor circuit offers an advantageous feature of producing a pixel signal having high reproducibility.
摘要翻译：根据本发明实施例的光传感器电路包括用于检测光信号并将相同信号转换为电信号的光检测元件（PD），用于对寄生电容进行充电和放电的第一MOS晶体管（QT）（C 1），用于将光检测元件的端子电压累积为像素信号的电容器（C 2），用于将寄生电容电荷从光检测元件传递到电容器的第二MOS晶体管（Q 2）（C 2），用于放大电容器的端子电压的第三MOS晶体管（Q 3）和用于选择性地输出放大的像素信号的第四MOS晶体管（Q 4）。在上述结构中，第一MOS晶体管和第二MOS晶体管在累积像素信号之前被导通一段时间，以通过对光电检测元件和电容器的端子电压进行充电和放电来平衡寄生电容光检测元件和电容器，第二MOS晶体管截止，并且在像素信号的累积的一定时间段之后电容器断开，然后第四MOS晶体管导通。该光电传感器电路提供了产生具有高再现性的像素信号的有利特征。

5. 发明授权

US07256378B2 Output-compensating device for image sensor 有权
标题翻译：图像传感器输出补偿装置
公开(公告)号：US07256378B2
公开(公告)日：2007-08-14
申请号：US10452390
申请日：2003-05-30
申请人： Makoto Furukawa , Sukeyuki Shinotsuka , Jiro Kurita , Katsuhiko Takebe
发明人： Makoto Furukawa , Sukeyuki Shinotsuka , Jiro Kurita , Katsuhiko Takebe
IPC分类号： H01L27/00
CPC分类号： H04N5/35518 , H01L27/14643 , H04N5/361
摘要： An output compensating device capable of optimally compensating output signals of an image sensor composed of a number of light-sensor circuits, each of which represents a unit pixel and is capable of producing in a photoelectric converting element a sensor current proportional to a quantity of light falling thereon, converting the current into a voltage signal by a MOS type transistor with a logarithmic output characteristic in a weak inverse state, initializing itself by removing a charge accumulated in a parasitic capacitor of the photoelectric converting element by changing a drain voltage of the transistor to a value lower than a normal value for a specified time and outputting a pixel signal having a logarithmic characteristic at a large quantity of the sensor current and a pixel signal having a non-logarithmic characteristic at a small quantity of the sensor current. This device has a means for compensating each pixel signal from the image sensor for an offset value and outputting a resulting signal if said signal has an output characteristic within a logarithmic response region or a non-logarithmic region depending on the output condition and, if not, further compensating the offset-compensated signal for its gain and outputting a resulting signal, thus ensuring the optimal compensation of each pixel signal of the image sensor in accordance with its output state.
摘要翻译：一种输出补偿装置，其能够最佳地补偿由多个光传感器电路组成的图像传感器的输出信号，每个光传感器电路表示单位像素，并且能够在光电转换元件中产生与光量成比例的传感器电流通过在弱反相状态下的对数输出特性的MOS型晶体管将电流转换为电压信号，通过改变晶体管的漏极电压来消除累积在光电转换元件的寄生电容器中的电荷来自身初始化达到规定时间以下的正常值以下的值，并输出具有大量传感器电流的对数特性的像素信号和具有少量传感器电流的非对数特性的像素信号。该装置具有用于补偿来自图像传感器的每个像素信号用于偏移值的装置，并且如果所述信号具有在对数响应区域内的输出特性或取决于输出条件的非对数区域，则输出结果信号，如果不是进一步补偿偏移补偿信号的增益并输出结果信号，从而根据其输出状态确保图像传感器的每个像素信号的最佳补偿。

6. 发明授权

US07880788B2 Optical sensor circuit and image sensor 失效
标题翻译：光传感器电路和图像传感器
公开(公告)号：US07880788B2
公开(公告)日：2011-02-01
申请号：US11719802
申请日：2006-06-09
申请人： Tomoyuki Kamiyama , Sukeyuki Shinotsuka , Masaki Kunigami , Makoto Furukawa
发明人： Tomoyuki Kamiyama , Sukeyuki Shinotsuka , Masaki Kunigami , Makoto Furukawa
IPC分类号： H04N3/14 , H04N5/335 , H01L27/00
CPC分类号： H04N5/3745 , H01L27/14609 , H01L27/14643 , H04N5/243 , H04N5/35518 , H04N5/35527
摘要： An optical sensor circuit has a photodiode PD, a MOS transistor Q1, a voltage controller 13 which supplies a gate voltage and a drain voltage to the transistor, etc. The voltage controller includes initial setting means 15. In the initial setting means, an electrostatic capacitance element of the photodiode is charged/discharged while setting a gate voltage of the transistor Q1 to a high gate voltage value VgH, only for a predetermined time period, and setting a drain voltage to a low drain voltage value VdL, only for a predetermined time period. Thereafter, the drain voltage is set to VdH, and, after elapse of a predetermined time period, the gate voltage is set to VgL. VgH, VdH, and VdL satisfy relational expressions of “VgH−VdH Vth where Vth: a threshold voltage of the MOS transistor Q1”.
摘要翻译：光传感器电路具有光电二极管PD，MOS晶体管Q1，向晶体管供给栅极电压和漏极电压的电压控制器等。电压控制器包括初始设定单元15.在初始设定单元中，静电光电二极管的电容元件在将晶体管Q1的栅极电压设定为高栅极电压值VgH的同时，仅在预定时间段内进行充电/放电，并将漏极电压设定为低漏极电压值VdL，仅对于预定的时间段。此后，将漏极电压设定为VdH，经过规定时间后，将栅极电压设定为VgL。 VgH，VdH和VdL满足“VgH-VdH Vth”的关系式，其中Vth：MOS晶体管Q1的阈值电压。

7. 发明申请

US20080061113A9 WELDING CONDITION MONITORING DEVICE 失效
标题翻译：焊接条件监测装置
公开(公告)号：US20080061113A9
公开(公告)日：2008-03-13
申请号：US10641587
申请日：2003-08-12
申请人： Hideo Seki , Sukeyuki Shinotsuka , Makoto Furukawa , Koji Oda , Keiji Otsuka , Jiro Kirita , Nobuhiro Fueki , Hironori Watanabe
发明人： Hideo Seki , Sukeyuki Shinotsuka , Makoto Furukawa , Koji Oda , Keiji Otsuka , Jiro Kirita , Nobuhiro Fueki , Hironori Watanabe
IPC分类号： B23K31/12 , B23K26/00
CPC分类号： H04N5/35518 , B23K9/0953 , B23K9/0956 , B23K26/032 , B23K26/242 , B23K31/125
摘要： A welding condition monitoring device for monitoring the welding state of a welding work portion by taking an image thereof by an image sensor having a wide dynamic range and capable of taking an image covering a very bright welding portion and relatively dark portion. The monitoring device selectively emphasizes the outputs of the image sensor for any of luminance areas of the image taken by the image sensor using a sensor output characteristic table and can provide an image clearly showing both the very bright welding portion and the dark bead portion with a sufficient contrast allowing an observer to reliably recognize the objects in the image.
摘要翻译：一种焊接状态监视装置，用于通过由具有宽动态范围的图像传感器拍摄其图像并且能够拍摄覆盖非常亮的焊接部分和相对较暗部分的图像来监视焊接工作部分的焊接状态。监视装置使用传感器输出特性表，选择性地强调图像传感器对图像传感器拍摄的图像的亮度区域的输出，并且可以提供清楚地显示非常亮的焊接部分和暗珠部分的图像足够的对比度允许观察者可靠地识别图像中的对象。

8. 发明授权

US07414652B2 Image sensor and method 有权
标题翻译：图像传感器和方法
公开(公告)号：US07414652B2
公开(公告)日：2008-08-19
申请号：US10729577
申请日：2003-12-03
申请人： Sukeyuki Shinotsuka
发明人： Sukeyuki Shinotsuka
IPC分类号： H04N3/14
CPC分类号： H04N5/35518 , H01L27/14643 , H04N5/3745 , H04N5/376
摘要： An image sensor comprising a matrix of solid-state light sensor elements each representing a unit pixel, which is capable of reading out sensor signals from respective pixels in a time series by sequentially selecting pixels on a line-by-line basis and sequentially selecting pixels in a selected line, wherein each pixel line is divided into a plurality of blocks with each block composed of the same specified number of pixels and a first scanning means sequentially reads pixel sensor signals on the block-by-block basis starting from the first block and a second scanning means reads pixel sensor signals of the readout block. The image sensor thus constructed can achieve high speed scanning of respective pixels with a minimal increase in power consumption.
摘要翻译：一种图像传感器，包括各自表示单位像素的固体光传感器元件的矩阵，其能够以逐行的顺序依次选择像素并依次选择像素来读取时间序列中的各个像素的传感器信号在所选择的行中，其中每个像素线被划分成多个块，每个块由相同的指定数量的像素组成，并且第一扫描装置从第一块开始逐个地依次读取像素传感器信号并且第二扫描装置读取读出块的像素传感器信号。如此构造的图像传感器可以以最小的功耗增加来实现各个像素的高速扫描。

9. 发明授权

US07932947B2 Output-compensating device and method of an image sensor 失效
标题翻译：图像传感器的输出补偿装置和方法
公开(公告)号：US07932947B2
公开(公告)日：2011-04-26
申请号：US10693204
申请日：2003-10-24
申请人： Sukeyuki Shinotsuka , Atsushi Nakajima , Hironari Wanatabe
发明人： Sukeyuki Shinotsuka , Atsushi Nakajima , Hironari Wanatabe
IPC分类号： H04N5/335 , H04N3/14
CPC分类号： H04N5/35518 , H04N5/3651
摘要： An output compensating device of an image sensor using a number of light-sensor circuits, each of which represents a unit pixel and works by producing in a photoelectric converting element a sensor current proportional to a quantity of light falling thereon, converting the current into a voltage signal by using sub-threshold region characteristic of a transistor having a logarithmic output characteristic in a weak inverse state, which enables the image sensor to compensate for variations in each pixel output by using a sensor signal obtainable when changing a gate voltage and drain voltage of the transistor with shut-off light falling on the photoelectric converting element to a value lower than normal voltages of the transistor for taking video. This enables the image sensor to easily compensate for variations in output characteristics of respective light sensor circuits in a pseudo output state created therein with no actual light falling thereon.
摘要翻译：一种使用多个光传感器电路的图像传感器的输出补偿装置，每个光传感器电路都表示单位像素，并且通过在光电转换元件中产生与其上的光量成比例的传感器电流进行工作，将电流转换为通过使用具有微弱反转状态的对数输出特性的晶体管的次阈值区域特性，能够使图像传感器通过使用当改变栅极电压和漏极电压时可获得的传感器信号来补偿每个像素输出中的变化具有落在光电转换元件上的截止光的晶体管的值低于用于拍摄视频的晶体管的正常电压的值。这使得图像传感器能够容易地补偿在其中产生的伪输出状态下的各个光传感器电路的输出特性的变化，其中没有实际的光落在其上。

10. 发明授权

US07380697B2 Welding condition monitoring device 失效
标题翻译：焊接状态监测装置
公开(公告)号：US07380697B2
公开(公告)日：2008-06-03
申请号：US10641587
申请日：2003-08-12
申请人： Hideo Seki , Sukeyuki Shinotsuka , Makoto Furukawa , Koji Oda , Keiji Otsuka , Jiro Kirita , Nobuhiro Fueki , Hironori Watanabe
发明人： Hideo Seki , Sukeyuki Shinotsuka , Makoto Furukawa , Koji Oda , Keiji Otsuka , Jiro Kirita , Nobuhiro Fueki , Hironori Watanabe
IPC分类号： B23K35/12 , B23K37/00
CPC分类号： H04N5/35518 , B23K9/0953 , B23K9/0956 , B23K26/032 , B23K26/242 , B23K31/125
摘要： A welding condition monitoring device for monitoring the welding state of a welding work portion by taking an image thereof by an image sensor having a wide dynamic range and capable of taking an image covering a very bright welding portion and relatively dark portion. The monitoring device selectively emphasizes the outputs of the image sensor for any of luminance areas of the image taken by the image sensor using a sensor output characteristic table and can provide an image clearly showing both the very bright welding portion and the dark bead portion with a sufficient contrast allowing an observer to reliably recognize the objects in the image.
摘要翻译：一种焊接状态监视装置，用于通过由具有宽动态范围的图像传感器拍摄其图像并且能够拍摄覆盖非常亮的焊接部分和相对较暗部分的图像来监视焊接工作部分的焊接状态。监视装置使用传感器输出特性表，选择性地强调图像传感器对图像传感器拍摄的图像的亮度区域的输出，并且可以提供清楚地显示非常亮的焊接部分和暗珠部分的图像足够的对比度允许观察者可靠地识别图像中的对象。

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