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1. 发明授权

US06617994B1 Capacitive flash analog to digital converter 失效
标题翻译：电容闪存模数转换器
公开(公告)号：US06617994B1
公开(公告)日：2003-09-09
申请号：US09868612
申请日：2001-10-11
申请人： Pascal Heim , Alessandro Mortara , Peter Masa , Friedrich Heitger
发明人： Pascal Heim , Alessandro Mortara , Peter Masa , Friedrich Heitger
IPC分类号： H03M112
CPC分类号： H03M1/361
摘要： 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.
摘要翻译：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。

2. 发明授权

US06528783B1 Position sensor and circuit for optical encoder 失效
标题翻译：光学编码器位置传感器和电路
公开(公告)号：US06528783B1
公开(公告)日：2003-03-04
申请号：US09857175
申请日：2001-09-07
申请人： Alessandro Mortara , Peter Masa , Pascal Heim , Friedrich Heitger
发明人： Alessandro Mortara , Peter Masa , Pascal Heim , Friedrich Heitger
IPC分类号： G01D534
CPC分类号： G01D5/24 , G06G7/22
摘要： 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.
摘要翻译：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。

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