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1. 发明公开

EP3702768A1 SOIL SENSOR AND SOIL MEASUREMENT METHOD 有权
公开(公告)号：EP3702768A1
公开(公告)日：2020-09-02
申请号：EP18871471.1
申请日：2018-10-17
申请人： National University Corporation Shizuoka University
发明人： FUTAGAWA Masato , KAWAHITO Shoji , YASUTOMI Keita
IPC分类号： G01N27/02
摘要： A soil sensor 1 includes a current supply unit 2, an electrode 3 disposed in soil 100, and a processing unit 4 that obtains a water content W and a total ion concentration N in the soil 100 using a temporal change of a measured voltage VM, which is generated at the electrode 3, while a DC current is being supplied to the soil 100. The processing unit 4 includes an information conversion unit 11 that converts a first time t1 and a second time t2 until the measured voltage VM reaches first threshold voltages VH1 and VL1 and second threshold voltages VH2 and VL2 into frequency information using the temporal change of the measured voltage VM, an impedance calculation unit 18 that obtains the impedance of the soil 100, a water content calculation unit 19 that obtains the water content W using the impedance, and a total ion concentration calculation unit 21 that obtains the total ion concentration N using the impedance.

2. 发明授权

EP2541896B1 SOLID-STATE IMAGE PICKUP DEVICE, METHOD OF READING PIXEL SIGNAL, AND PIXEL 有权
公开(公告)号：EP2541896B1
公开(公告)日：2019-06-12
申请号：EP11739689.5
申请日：2011-01-28
申请人： National University Corporation Shizuoka University
发明人： KAWAHITO Shoji , YASUTOMI Keita
IPC分类号： H04N5/374 , H01L27/146 , H04N5/355

3. 发明公开

EP2322953A1 DISTANCE IMAGE SENSOR AND METHOD FOR GENERATING IMAGE SIGNAL BY TIME-OF-FLIGHT METHOD 有权
标题翻译：维多利亚州杜尔斯坦传真大学
公开(公告)号：EP2322953A1
公开(公告)日：2011-05-18
申请号：EP09803021.6
申请日：2009-07-30
申请人： National University Corporation Shizuoka University
发明人： KAWAHITO Shoji
IPC分类号： G01S17/10 , G01S17/89 , H01L27/146 , H04N5/225 , H04N5/335
CPC分类号： H01L27/14603 , G01S7/4863 , G01S17/10 , G01S17/89 , H01L31/02024 , H04N5/341 , H04N13/254
摘要： A distance image sensor capable of enlarging the distance measurement range without reducing the distance resolution is provided. A radiation source 13 provides first to fifth pulse trains P T1 to P T5 which are irradiated to the object as radiation pulses in the first to fifth frames arranged in order on a time axis. In each of the frames, imaging times T PU1 to T PU5 are prescribed at points of predetermined time ΔT PD from the start point of each frame, also the pulses P T1 to P T5 are shifted respectively by shift amounts different from each other from the start point of the first to fifth frames. A pixel array 23 generates element image signals S E1 to S E5 each of which has distance information of an object in distance ranges different from each other using imaging windows A and B in each of five frames. A processing unit 17 generates an image signal S IMAGE by combining the element image signals. Since five times-of-flight measurement are used, the width of the radiation pulse does not have to be increased to obtain distance information of the object in a wide distance range, and the distance resolution is not reduced.
摘要翻译：提供了能够在不减小距离分辨率的情况下扩大距离测量范围的距离图像传感器。辐射源13提供照射到物体的第一至第五脉冲串P T1至P T5，作为在时间轴上按顺序布置的第一至第五帧中的辐射脉冲。在每个帧中，在从每个帧的起始点开始的预定时间“T PD”的点处规定成像时间T PU1至T PU5，脉冲P T1至P T5也分别移动彼此不同的移位量第一到第五帧的起点。像素阵列23使用五帧中的每一帧中的成像窗口A和B，生成元素图像信号S E1至S E5，每个元素图像信号具有距离范围彼此不同的距离信息。处理单元17通过组合元素图像信号来生成图像信号S IMAGE。由于使用五次飞行测量，所以不必增加辐射脉冲的宽度，以获得物体在较宽距离范围内的距离信息，并且距离分辨率不降低。

4. 发明公开

EP4451006A1 DISTANCE IMAGE MEASURING DEVICE, AND DISTANCE IMAGE MEASURING METHOD 审中-公开
公开(公告)号：EP4451006A1
公开(公告)日：2024-10-23
申请号：EP22911311.3
申请日：2022-12-21
申请人： National University Corporation Shizuoka University
发明人： KAWAHITO Shoji
IPC分类号： G01S7/4865 , G01S7/4863 , H04N25/705
CPC分类号： G01S7/4863 , H04N25/705 , G01S7/4865
摘要： A distance image sensor 10 includes a light source 11 configured to generate pulsed light LP, a light source driver 31 configured to control the light source 11, a pixel circuit 13 including a photoelectric conversion region 21, charge readout regions 221 to 224, and control electrodes G1 to G4, a pixel driver 32 configured to repeatedly apply control pulses G(1) to G(4) to the control electrodes G1 to G4 within a frame period while being delayed from a generation timing of the pulsed light LP, and a signal readout circuit 15 configured to read out detection signals of charge amounts accumulated in the charge readout region 221 to 224, and the signal readout circuit 15 reads out the detection signals from a group of charge readout regions 221 to 224 obtained by dividing the charge readout regions 221 to 224 into N (N is an integer equal to or greater than 2) at different readout timings for each group of the charge readout regions 221 to 224 divided into N within the frame period.

5. 发明公开

EP4063951A1 IMAGING DEVICE 审中-实审
公开(公告)号：EP4063951A1
公开(公告)日：2022-09-28
申请号：EP20892898.6
申请日：2020-11-25
申请人： NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY , National University Corporation Gunma University
发明人： KAWAHITO Shoji , OKU Hiromasa
IPC分类号： G03B15/00 , G02B7/28 , G03B13/34 , G03B7/091 , H04N5/225 , H04N5/369
摘要： An imaging device 1 includes a varifocal lens 10 and an imaging sensor 15 which outputs a signal corresponding to light. The imaging sensor 15 includes a photoelectric conversion unit PD which converts light into an electric charge, electric charge reading regions R1 to R4, transfer control electrodes E1 to E4, a gate control circuit 26 which sequentially applies control signals TG1 to TG4 to the transfer control electrodes E1 to E4 to correspond to the position of the focal point P of the varifocal lens 10, and a reading circuit 27 which outputs a signal corresponding to the amount of the electric charge transferred to the electric charge reading regions R1 to R4. The gate control circuit 26 repeats an operation of outputting each of the control signals TG1 to TG4 when the position of the focal point P is located in the focal ranges BF1 to BF4 during a frame period.

6. 发明授权

EP2571169B1 A/D CONVERTER 有权
公开(公告)号：EP2571169B1
公开(公告)日：2019-07-03
申请号：EP11780708.1
申请日：2011-05-13
申请人： National University Corporation Shizuoka University
发明人： KAWAHITO Shoji
IPC分类号： H03M1/14 , H03M1/16 , H03M1/40 , H03M1/56 , H04N5/378 , H04N5/357

7. 发明授权

EP2739037B1 SOLID STATE IMAGE PICK-UP DEVICE, AND PIXEL 有权
标题翻译：固态图像记录设备及像素
公开(公告)号：EP2739037B1
公开(公告)日：2016-04-20
申请号：EP12819277.0
申请日：2012-07-25
申请人： National University Corporation Shizuoka University
发明人： KAWAHITO Shoji , TAKAI Isamu
IPC分类号： H04N5/3745 , H01L27/146 , H04N5/359
CPC分类号： H04N5/3742 , H01L27/14612 , H01L31/11 , H04N5/3594 , H04N5/3745 , H04N5/37452

8. 发明公开

EP2739037A1 SOLID STATE IMAGE PICK-UP DEVICE, AND PIXEL 有权
标题翻译： FESTKÖRPERBILDAUFNAHMEVORRICHTUNGUND -PIXEL
公开(公告)号：EP2739037A1
公开(公告)日：2014-06-04
申请号：EP12819277.0
申请日：2012-07-25
申请人： National University Corporation Shizuoka University
发明人： KAWAHITO Shoji , TAKAI Isamu
IPC分类号： H04N5/3745
CPC分类号： H04N5/3742 , H01L27/14612 , H01L31/11 , H04N5/3594 , H04N5/3745 , H04N5/37452
摘要： A pixel 10 includes a photodiode PD which is provided between a first barrier region 21 forming a first potential barrier B1 and a second barrier region 27 forming a second potential barrier B2, a first floating diffusion region F1 which is provided adjacent to the first barrier region 21, and to which a first electric charge generated in the photodiode PD is transferred, and a second floating diffusion region F2 which is provided adjacent to the second barrier region 27, and into which a second electric charge generated in the photoelectric conversion region PD flows, and in which a part of the flowing-in second electric charge is accumulated. The second potential barrier B2 is lower than the first potential barrier B1.
摘要翻译：像素10包括设置在形成第一势垒B1的第一势垒区域21和形成第二势垒B2的第二势垒区域27之间的光电二极管PD，与第一势垒区域相邻设置的第一浮动扩散区域F1 21，并且传输在光电二极管PD中产生的第一电荷的第二浮动扩散区域F2和与第二势垒区域27相邻设置并且在光电转换区域PD中产生的第二电荷流动的第二浮动扩散区域F2 并且其中积聚了一部分流入的第二电荷。第二势垒B2低于第一势垒B1。

9. 发明公开

EP2571169A1 A/D CONVERTER 有权
标题翻译：模拟 - 数字 - WANDLER
公开(公告)号：EP2571169A1
公开(公告)日：2013-03-20
申请号：EP11780708.1
申请日：2011-05-13
申请人： National University Corporation Shizuoka University
发明人： KAWAHITO Shoji
IPC分类号： H03M1/40 , H03M1/14 , H03M1/56 , H04N5/374
CPC分类号： H03M1/12 , H03M1/145 , H03M1/162 , H03M1/403 , H03M1/56 , H04N5/357 , H04N5/3575 , H04N5/378
摘要： An object is to provide an A/D converter which uses a plurality of A/D converter circuits and can lower the A/D conversion accuracy in the A/D converter circuit for a lower digit by employing a cyclic A/D conversion scheme for an upper digit thereof. An A/D converter 101 comprises a first cyclic A/D converter circuit 103 and an A/D converter circuit 105. The A/D converter 101 includes a record circuit 107 for storing conversion results from the A/D converter circuits 103, 105. The record circuit 107 includes an upper-bit record circuit 107a and a lower-bit circuit 107b. The cyclic A/D converter circuit 103 receives an analog value SA and generates a first digital value SD1 indicating the analog value SA and a residue value RD. The A/D converter circuit 105 receives the residue value RD and generates a second digital value SD2 having lower M bits indicating the residue value RD. The conversion accuracy in the A/D converter circuit 105 can be lowered to 1/2 L that in the A/D converter circuit 103.
摘要翻译：本发明的目的是提供一种使用多个A / D转换器电路的A / D转换器，并且可以通过采用循环A / D转换方案来降低用于较低数字的A / D转换器电路中的A / D转换精度其高位数字。 A / D转换器101包括第一循环A / D转换器电路103和A / D转换器电路105.A / D转换器101包括用于存储来自A / D转换器电路103,105的转换结果的记录电路107 记录电路107包括高位记录电路107a和下位电路107b。循环A / D转换电路103接收模拟值SA，并生成表示模拟值SA的第一数字值SD1和残差值RD。 A / D转换器电路105接收残差值RD，并产生具有指示残余值RD的较低M位的第二数字值SD2。 A / D转换电路105的转换精度可以降低到A / D转换电路103中的1/2L。

10. 发明公开

EP2541896A1 SOLID-STATE IMAGE PICKUP DEVICE, METHOD OF READING PIXEL SIGNAL, AND PIXEL 有权
标题翻译： FESTKÖRPERBILDAUFNAHMEVORRICHTUNG，VERFAHREN ZUR AUSLESUNG VON PIXELSIGENENEN UND PIXEL
公开(公告)号：EP2541896A1
公开(公告)日：2013-01-02
申请号：EP11739689.5
申请日：2011-01-28
申请人： National University Corporation Shizuoka University
发明人： KAWAHITO Shoji , YASUTOMI Keita
IPC分类号： H04N5/374 , H01L27/146 , H04N5/355
CPC分类号： H04N5/37452 , H04N5/35581 , H04N5/3559
摘要： In a pixel 11, a floating semiconductor region FD accumulates a charge from a photoelectric transducer PD. A first charge transfer path CTP1 extends from the photoelectric transducer PD to the floating semiconductor region FD through the storage diode SD. A second charge transfer path CTP2 extends from the photoelectric transducer PD to the floating semiconductor region. An output unit AMP provides a signal corresponding to a potential in the floating semiconductor region FD. The first charge transfer path CTP includes a first shutter switch TR(GS1) for controlling a transfer of the charge from the photoelectric transducer PD, the storage diode SD for accumulating the charge from the photoelectric transducer PD, and a transfer switch TR(TF1) for controlling a transfer of the charge from the storage diode SD to the floating semiconductor region PD, while the second charge transfer path CTP includes a shutter switch TR(GS2) for controlling a transfer of the charge from the photoelectric transducer PD.
摘要翻译：在像素11中，浮动半导体区域FD累积来自光电变换器PD的电荷。第一电荷转移通道CTP1通过存储二极管SD从光电变换器PD延伸到浮动半导体区域FD。第二电荷转移路径CTP2从光电换能器PD延伸到浮动半导体区域。输出单元AMP提供与浮动半导体区域FD中的电位相对应的信号。第一电荷转移路径CTP包括用于控制来自光电变换器PD的电荷转移的第一快门开关TR（GS1），用于累积来自光电变换器PD的电荷的存储二极管SD和转移开关TR（TF1）用于控制从存储二极管SD到浮动半导体区域PD的电荷的转移，而第二电荷转移通路CTP包括用于控制光电转换器PD的电荷转移的快门开关TR（GS2）。

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