公开(公告)号：US20110007199A1

公开(公告)日：2011-01-13

申请号：US12673609

申请日：2009-02-19

Applicant: Pascal Heim ,  Pierre-Francois Ruedi

Inventor： Pascal Heim ,  Pierre-Francois Ruedi

IPC: H04N5/335

CPC classification number: H04N5/3745 ,  H04N5/35509 ,  H04N5/35518 ,  H04N5/378

Abstract: A digital vision sensor includes a pixel array (10) for receiving a light beam representing a visual scene. The sensor includes: a reference voltage Vref generator; in each pixel, an element for generating, during an integration phase, a voltage Vp that is proportional to the received lighting and a comparator (30) for determining the moment when the voltage Vp thereof reaches the reference voltage; a logarithmic period generator for generating a clock having a period that increases proportionally to the time elapsed from the beginning of the integration; a device for counting the number of clock periods elapsed from the beginning of the integration and providing a result in the form of a binary code; a static RAM memory word (50) per pixel; and, in each pixel, an element (40) for writing the code present at the moment into the memory.

Abstract translation: 数字视觉传感器包括用于接收表示视觉场景的光束的像素阵列（10）。 传感器包括：参考电压Vref发生器; 在每个像素中，用于在积分阶段期间产生与接收到的光照成比例的电压Vp的元件和用于确定其电压Vp达到参考电压的时刻的比较器（30）; 对数周期发生器，用于产生具有与从积分开始起经过的时间成比例地增加的周期的时钟; 用于计数从积分开始经过的时钟周期的数量并以二进制码的形式提供结果的装置; 每个像素的静态RAM存储器字（50）; 并且在每个像素中，存在用于将存在于该存储器中的代码写入的元件（40）。

公开(公告)号：US08698892B2

公开(公告)日：2014-04-15

申请号：US13262663

申请日：2009-04-03

Applicant: David Hasler ,  Peter Masa ,  Pascal Heim ,  Edoardo Franzi

Inventor： David Hasler ,  Peter Masa ,  Pascal Heim ,  Edoardo Franzi

IPC: H04N7/18 ,  G01D5/347 ,  G01D5/244 ,  G01D5/249

CPC classification number: G01D5/34746 ,  G01D5/24438 ,  G01D5/24452 ,  G01D5/24476 ,  G01D5/2449 ,  G01D5/2495 ,  G01D5/34792 ,  H03M1/0678 ,  H03M1/202 ,  H03M1/282

Abstract: A one-dimension position measurement system includes: a first ruler having a first one-dimension binary code si applied thereon, a camera for acquiring a picture of a portion of the code si, the portion having a length of I bits, and some processing elements. Each codeword of length I of the one-dimension code si is unique within the whole code si. A codeword ai is read from the acquired picture, and the processing elements are implemented for computing an absolute position p of the codeword ai of the code si from: (I). An ad-hoc interpolation method is used to obtain a precision way below the distance between two bits of the codewords. The code si may be applied on the ruler by using some geometric primitives, a geometric primitive for encoding a “1” being different from a geometric primitive for encoding a “0”, both having the same horizontal projection. The horizontal projection is then used for fine interpolation, achieving nanometer-scale resolution.

Abstract translation: 一维位置测量系统包括：具有施加在其上的第一一维二进制码si的第一标尺，用于获取码si的一部分的图像的照相机，具有I比特长度的部分以及一些处理 元素。 一维码si的长度为I的每个码字在整个码si内是唯一的。 从所获取的图像中读取码字ai，并且执行处理元件以从：（I）计算码si的码字ai的绝对位置p。 使用自组织插值方法来获得低于码字的两位之间的距离的精确方式。 代码si可以通过使用一些几何图元应用于标尺上，几何图元用于编码“1”与用于编码“0”的几何基元不同的几何图元，两者具有相同的水平投影。 然后将水平投影用于精细插值，实现纳米级分辨率。

公开(公告)号：US08363140B2

公开(公告)日：2013-01-29

申请号：US12673609

申请日：2009-02-19

Applicant: Pascal Heim ,  Pierre-Francois Ruedi

Inventor： Pascal Heim ,  Pierre-Francois Ruedi

IPC: H04N3/14 ,  H04N5/335

CPC classification number: H04N5/3745 ,  H04N5/35509 ,  H04N5/35518 ,  H04N5/378

Abstract: A digital vision sensor includes a pixel array (10) for receiving a light beam representing a visual scene. The sensor includes: a reference voltage Vref generator; in each pixel, an element for generating, during an integration phase, a voltage Vp that is proportional to the received lighting and a comparator (30) for determining the moment when the voltage Vp thereof reaches the reference voltage; a logarithmic period generator for generating a clock having a period that increases proportionally to the time elapsed from the beginning of the integration; a device for counting the number of clock periods elapsed from the beginning of the integration and providing a result in the form of a binary code; a static RAM memory word (50) per pixel; and, in each pixel, an element (40) for writing the code present at the moment into the memory.

Abstract translation: 数字视觉传感器包括用于接收表示视觉场景的光束的像素阵列（10）。 传感器包括：参考电压Vref发生器; 在每个像素中，用于在积分阶段期间产生与接收到的光照成比例的电压Vp的元件和用于确定其电压Vp达到参考电压的时刻的比较器（30）; 对数周期发生器，用于产生具有与从积分开始起经过的时间成比例地增加的周期的时钟; 用于计数从积分开始经过的时钟周期的数量并以二进制码的形式提供结果的装置; 每个像素的静态RAM存储器字（50）; 并且在每个像素中，存在用于将存在于该存储器中的代码写入的元件（40）。

公开(公告)号：US08008899B2

公开(公告)日：2011-08-30

申请号：US12407455

申请日：2009-03-19

Applicant: Pascal Heim ,  Jean-Félix Perotto

Inventor： Pascal Heim ,  Jean-Félix Perotto

IPC: G05F1/10 ,  G05F1/40

CPC classification number: H02M3/1582

Abstract: A DC-DC converter includes an induction coil cooperating with two switches, which operate alternately, to supply output voltage of a determined level relative to input voltage. The converter control method includes, in each cycle, a first phase of first duration with first switch controlled to make it conductive, and to increase current in the induction coil, and a second phase with second switch controlled to be conductive and to decrease current in the induction coil during a second adjustable time period. Detection device detects, at the end of the second phase, sign of overvoltage across one terminal of the induction coil connected to the switches, and supplies a detection signal kept in a high or low state, depending upon sign of detected overvoltage. Timing device receives detection signal for adapting, in each successive cycle, the second duration of the second phase to cancel out current in the induction coil.

Abstract translation: DC-DC转换器包括与两个开关配合的感应线圈，其交替工作以提供相对于输入电压确定电平的输出电压。 转换器控制方法在每个周期中包括第一持续时间的第一阶段，其中第一开关被控制以使其导通，并且增加感应线圈中的电流，以及第二相位，其中第二开关被控制为导通并且减小电流 感应线圈在第二可调整时间段期间。 检测装置在第二阶段结束时检测到连接到开关的感应线圈的一个端子上的过电压，并且根据检测到的过电压的符号提供保持在高或低状态的检测信号。 定时装置接收检测信号，以在每个连续周期中适应第二相的第二持续时间以抵消感应线圈中的电流。

公开(公告)号：US20090237039A1

公开(公告)日：2009-09-24

申请号：US12407455

申请日：2009-03-19

Applicant: Pascal Heim ,  Jean-Felix Perotto

Inventor： Pascal Heim ,  Jean-Felix Perotto

IPC: G05F3/24

CPC classification number: H02M3/1582

Abstract: A DC-DC converter includes an induction coil cooperating with two switches, which operate alternately, to supply output voltage of a determined level relative to input voltage. The converter control method includes, in each cycle, a first phase of first duration with first switch controlled to make it conductive, and to increase current in the induction coil, and a second phase with second switch controlled to be conductive and to decrease current in the induction coil during a second adjustable time period. Detection device detects, at the end of the second phase, sign of overvoltage across one terminal of the induction coil connected to the switches, and supplies a detection signal kept in a high or low state, depending upon sign of detected overvoltage. Timing device receives detection signal for adapting, in each successive cycle, the second duration of the second phase to cancel out current in the induction coil.

Abstract translation: DC-DC转换器包括与两个开关配合的感应线圈，其交替工作以提供相对于输入电压确定电平的输出电压。 转换器控制方法在每个周期中包括第一持续时间的第一阶段，其中第一开关被控制以使其导通，并且增加感应线圈中的电流，以及第二相位，其中第二开关被控制为导通并且减小电流 感应线圈在第二可调整时间段期间。 检测装置在第二阶段结束时检测到连接到开关的感应线圈的一个端子上的过电压，并且根据检测到的过电压的符号提供保持在高或低状态的检测信号。 定时装置接收检测信号，以在每个连续周期中适应第二相的第二持续时间以抵消感应线圈中的电流。

公开(公告)号：US07170043B2

公开(公告)日：2007-01-30

申请号：US10526358

申请日：2003-09-01

Applicant: Pascal Heim ,  Pierre-François Ruedi ,  Eric Fragniere ,  Eric Grenet ,  François Kaess

Inventor： Pascal Heim ,  Pierre-François Ruedi ,  Eric Fragniere ,  Eric Grenet ,  François Kaess

IPC: H01J40/14 ,  G01J1/42

CPC classification number: H04N5/374

Abstract: The invention relates to a method of calculating the local contrast at each pixel (PC) in a network (Mp) of photosensitive pixels which are arranged in at least one dimension (x, y). The inventive method consists in, during successive image acquisition cycles, producing a signal which is representative of the local luminance at each pixel, said luminance-representative signals being integrated values of luminance values sensed by the respective pixels (pC, pG, pD, pH, pB). The inventive method consists in: sampling the integrated values of the signals representing the luminance values at the pixels adjacent (pG, pD, pH, pB) to a considered pixel (pC), said sampling taking place at an instant in the cycle when the integrated value of the luminance at the considered pixel (pC) is equal to a pre-determined reference value; and determining the local contrast at the considered pixel (pC) on the basis of values thus sampled.

Abstract translation: 本发明涉及一种计算在至少一维中布置的感光像素的网络（M SUB）中的每个像素（P SUB）的局部对比度的方法， （x，y）。 本发明的方法包括在连续的图像采集周期期间产生代表每个像素处的局部亮度的信号，所述亮度代表信号是由各个像素感测的亮度值的积分值（p < p> N，P ，p ，p B）。 本发明的方法在于：在邻近的像素（p> N，P，D，D，H，H）上对表示亮度值的信号的积分值进行采样 所述采样发生在所述周期中的时刻，当所考虑的像素（的亮度的积分值）时，在所考虑的像素（p＆lt; p C等于预定的参考值; 以及基于这样采样的值来确定所考虑的像素处的局部对比度（p> C）。

公开(公告)号：US20120026321A1

公开(公告)日：2012-02-02

申请号：US13262663

申请日：2009-04-03

Applicant: David Hasler ,  Peter Masa ,  Pascal Heim ,  Edoardo Franzi

Inventor： David Hasler ,  Peter Masa ,  Pascal Heim ,  Edoardo Franzi

IPC: H04N7/18

CPC classification number: G01D5/34746 ,  G01D5/24438 ,  G01D5/24452 ,  G01D5/24476 ,  G01D5/2449 ,  G01D5/2495 ,  G01D5/34792 ,  H03M1/0678 ,  H03M1/202 ,  H03M1/282

Abstract: A one-dimension position measurement system includes: a first ruler having a first one-dimension binary code si applied thereon, a camera for acquiring a picture of a portion of the code si, the portion having a length of I bits, and some processing elements. Each codeword of length I of the one-dimension code si is unique within the whole code si A codeword ai is read from the acquired picture, and the processing elements are implemented for computing an absolute position p of the codeword ai of the code si from: (I). An adhoc interpolation method is used to obtain a precision way below the distance between two bits of the codewords. The code si may be applied on the ruler by using some geometric primitives, a geometric primitive for encoding a “1” being different from a geometric primitive for encoding a “0”, both having the same horizontal projection. The horizontal projection is then used for fine interpolation, achieving nanometre-scale resolution.

Abstract translation: 一维位置测量系统包括：具有施加在其上的第一一维二进制码si的第一标尺，用于获取码si的一部分的图像的相机，具有I比特长度的部分以及一些处理 元素。 一维码si的长度为I的每个码字在整个码si内是唯一的。从所获取的图像中读取码字ai，并且实现处理元件以计算码si的码字ai的绝对位置p ： （一世）。 使用自适应插值方法来获得低于码字的两位之间的距离的精确方式。 代码si可以通过使用一些几何图元应用于标尺上，几何图元用于编码“1”与用于编码“0”的几何基元不同的几何图元，两者具有相同的水平投影。 然后将水平投影用于精细插值，实现纳米级分辨率。

公开(公告)号：US20060011806A1

公开(公告)日：2006-01-19

申请号：US10526358

申请日：2003-09-01

Applicant: Pascal Heim ,  Pierre-Francois Ruedi ,  Eric Fragniere ,  Eric Grenet ,  Francois Kaess

Inventor： Pascal Heim ,  Pierre-Francois Ruedi ,  Eric Fragniere ,  Eric Grenet ,  Francois Kaess

IPC: H01L27/00

CPC classification number: H04N5/374

Abstract: The invention relates to a method of calculating the local contrast at each pixel (PC) in a network (Mp) of photosensitive pixels which are arranged in at least one dimension (x, y). The inventive method consists in, during successive image acquisition cycles, producing a signal which is representative of the local luminance at each pixel, said luminance-representative signals being integrated values of luminance values sensed by the respective pixels (pC, pG, pD, pH, pB). The inventive method consists in: sampling the integrated values of the signals representing the luminance values at the pixels adjacent (pG, pD, pH, pB) to a considered pixel (pC), said sampling taking place at an instant in the cycle when the integrated value of the luminance at the considered pixel (pC) is equal to a pre-determined reference value; and determining the local contrast at the considered pixel (pC) on the basis of values thus sampled.

Abstract translation: 本发明涉及一种计算在至少一维中布置的感光像素的网络（M SUB）中的每个像素（P SUB）的局部对比度的方法， （x，y）。 本发明的方法包括在连续的图像采集周期期间产生代表每个像素处的局部亮度的信号，所述亮度代表信号是由各个像素感测的亮度值的积分值（p < p> N，P ，p ，p B）。 本发明的方法在于：在邻近的像素（p> N，P，D，D，H，H）上对表示亮度值的信号的积分值进行采样 所述采样发生在所述周期中的时刻，当所考虑的像素（的亮度的积分值）时，在所考虑的像素（p＆lt; p C等于预定的参考值; 以及基于这样采样的值来确定所考虑的像素处的局部对比度（p> C）。

公开(公告)号：US06617994B1

公开(公告)日：2003-09-09

申请号：US09868612

申请日：2001-10-11

Applicant: Pascal Heim ,  Alessandro Mortara ,  Peter Masa ,  Friedrich Heitger

Inventor： Pascal Heim ,  Alessandro Mortara ,  Peter Masa ,  Friedrich Heitger

IPC: H03M112

CPC classification number: H03M1/361

Abstract: An electronic circuit for a capacitive flash analog to digital converter for converting the ratio of first and second analog signals into a digital code representation using an array of parallel capacitive comparator branches. Each branch computing one bit of the digital code simultaneously according to its array index. The first analog signal is applied as a voltage difference between first signal nodes comprising a first positive signal node and a first negative signal node. The second analog signal is, applied as a voltage difference between second signal nodes comprising a second positive signal node and a second negative signal node.

Abstract translation: 一种用于电容闪存模数转换器的电子电路，用于使用并联电容比较器分支阵列将第一和第二模拟信号的比率转换成数字码表示。 每个分支根据其数组索引同时计算一位数字代码。 第一模拟信号作为包括第一正信号节点和第一负信号节点的第一信号节点之间的电压差被施加。 第二模拟信号被施加为包括第二正信号节点和第二负信号节点的第二信号节点之间的电压差。

公开(公告)号：US06528783B1

公开(公告)日：2003-03-04

申请号：US09857175

申请日：2001-09-07

Applicant: Alessandro Mortara ,  Peter Masa ,  Pascal Heim ,  Friedrich Heitger

Inventor： Alessandro Mortara ,  Peter Masa ,  Pascal Heim ,  Friedrich Heitger

IPC: G01D534

CPC classification number: G01D5/24 ,  G06G7/22

Abstract: An electronic circuit for measuring the position of a spatially periodic intensity pattern of incident radiation includes an array of detectors (1); two or more correlator units (2, 3) each having arrays of capacitors (12, 13) connected to a buffer (14); and a phase angle computing unit (4). The pitch of the array of detectors (1) is smaller than the pitch of the incident intensity pattern so that the latter is oversampled, yielding high accuracy. The detector outputs (17) are weighted by respective fixed capacitance values (15, 16) which vary periodically along arrays of capacitors (12, 13), and a weighted sum of outputs for each correlator unit (2, 3) is output at its respective buffer (14). The capacitance values (15, 16) of respective correlator units (2, 3) are mutually offset by a predetermined phase shift. The analog computation using capacitor arrays (12, 13) is fast and energy efficient, and can be implemented as a VLSI circuit.

Abstract translation: 用于测量入射辐射的空间周期性强度图案的位置的电子电路包括检测器阵列（1）; 两个或更多个相关器单元（2,3），每个具有连接到缓冲器（14）的电容器阵列（12,13）; 和相角计算单元（4）。 检测器（1）阵列的间距小于入射强度图案的间距，使得后者被过采样，产生高精度。 检测器输出（17）由相应固定电容值（15,16）加权，固定电容值（15,16）沿着电容器阵列（12,13）周期性地变化，并且每个相关器单元（2,3）的输出的加权和输出 相应的缓冲器（14）。 各个相关器单元（2,3）的电容值（15,16）相互偏移预定的相移。 使用电容器阵列（12,13）的模拟计算是快速且高能效的，并且可以被实现为VLSI电路。