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公开(公告)号：US09337856B1
公开(公告)日：2016-05-10
申请号：US14867201
申请日：2015-09-28
申请人： Nishant Dhawan , Kenton Veeder
发明人： Nishant Dhawan , Kenton Veeder
CPC分类号： H03M1/56 , H03M1/0697 , H03M1/1038 , H03M1/162 , H03M1/52 , H03M2201/2355
摘要： Methods and Systems for calibrating a Single Ramp Multiple Slope Analog to Digital Converter (SRMS ADC), the ADC including a counter and a plurality N of charge and discharge elements of different time constant i.e. slope, wherein the relationships between slopes is defined as a function of the shallowest slope SN such that S1=K1·SN, S2=K2·SN, . . . SN-1=KN-1·SN-1 where the K values are integers, and the code count for conversion is C=K1·C1+K2·C2+ . . . KN-1·CN-1+CN where each Ci represents an observed counts per each slope for a conversion, including; sampling for a first calibration pass a voltage with the ADC, discharging the voltage on the steepest slope for a number of counter counts C11, charging and discharging on the remaining slopes up to K2 to KN-1 for a number of counts per slope, Ci1 e.g. C21 to CN-1,1, discharging the remaining voltage residue on the shallowest slope and note the count, CN,1, sampling the same voltage on the ADC for a second calibration pass, discharging the voltage on the steepest slope for a modified number of counter counts C12=C11+/−X, modifying the number of charge/discharge counts time Ci2 for the slopes K2 to KN-1 to adjust for the change expected from the modified steep slope discharge to reach the shallowest slope with the same expected residue as for the first calibration pass, discharging the remaining voltage residue on the shallowest slope and note the actual count, CN,2, adjusting K1 to K1a based on the difference between CN,1 and CN,2, and; using C=K1a·C1+K2·C2+ . . . KN-1·CN-1+CN as the count code for conversion.
摘要翻译： 用于校准单斜坡多斜率模数转换器（SRMS ADC）的方法和系统，ADC包括不同时间常数即斜率的计数器和多个N个充电和放电元件，其中斜率之间的关系被定义为函数 的最小斜率SN，使得S1 = K1·SN，S2 = K2·SN。 。 。 SN-1 = KN-1·SN-1，其中K值是整数，转换代码计数为C = K1·C1 + K2·C2 +。 。 。 KN-1·CN-1 + CN，其中每个Ci表示转化每个斜率的观测计数，包括： 用于第一次校准的采样通过ADC传递电压，将最大斜率上的电压放电多个计数器计数C11，在其余斜率上的充电和放电达到K2至KN-1，对每个斜率计数Ci1 例如 C21至CN-1,1，放电最浅斜率上的剩余电压，并注意计数CN，1，对ADC进行相同的电压采样，进行第二次校准通过，将最陡坡上的电压放电至修改后的数字 计数器计数C12 = C11 +/- X，修改斜率K2至KN-1的充电/放电计数时间Ci2的数量，以调整从修改的陡倾斜放电预期的变化，以达到具有相同预期残留的最浅斜率 对于第一次校准通过，将最小斜坡上的剩余电压残余放电，并根据CN，1和CN，2之间的差值，注意实际计数CN，2调整K1至K1a; 使用C = K1a·C1 + K2·C2 +。 。 。 KN-1·CN-1 + CN作为转换计数码。
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2.发明申请AD CONVERTER, SIGNAL PROCESSING METHOD, SOLID-STATE IMAGING DEVICE, AND ELECTRONIC APPARATUS 审中-公开AD转换器，信号处理方法，固态成像装置和电子装置公开(公告)号：US20150326803A1
公开(公告)日：2015-11-12
申请号：US14798111
申请日：2015-07-13
申请人： SONY CORPORATION
发明人： Kyoichi Kanagawa
IPC分类号： H04N5/359 , H04N5/3745 , H04N5/378
CPC分类号： H04N5/359 , H03M1/66 , H03M2201/2355 , H04N5/3575 , H04N5/37455 , H04N5/378
摘要： Provided is an AD converter including a first AD converting unit in which pixel columns of a pixel array are divided into at least two groups, and that compares a first ramp signal and a first pixel signal output from a first group of the pixel columns and performs AD conversion on the first pixel signal; and a second AD converting unit that compares a second ramp signal and a second pixel signal output from a second group of the pixel columns and performs AD conversion on the second pixel signal, in which the first ramp signal is a signal of which a level is decreased with a constant slope over time in a D-phase period for detecting a signal level of a pixel signal, and the second ramp signal is a signal of which a level is increased with a constant slope over time in the D-phase period.
摘要翻译： 提供了一种AD转换器，其包括第一AD转换单元，其中像素阵列的像素列被划分为至少两组，并且比较第一斜坡信号和从第一组像素列输出的第一像素信号，并执行 第一像素信号的AD转换; 以及第二AD转换单元，其比较从第二组像素列输出的第二斜坡信号和第二像素信号，并且对第二像素信号执行AD转换，其中第一斜坡信号是水平的信号 在用于检测像素信号的信号电平的D相周期中以随时间的恒定斜率减小，并且第二斜坡信号是在D相周期中以随时间的恒定斜率增加电平的信号。
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3.发明申请CALIBRATION IN MULTIPLE SLOPE COLUMN PARALLEL ANALOG-TO-DIGITAL CONVERSION FOR IMAGE SENSORS 有权用于图像传感器的多个斜坡平行校准模拟数字转换公开(公告)号：US20130242125A1
公开(公告)日：2013-09-19
申请号：US13423976
申请日：2012-03-19
申请人： Zheng Yang , Guangbin Zhang , Yuanbao Gu
发明人： Zheng Yang , Guangbin Zhang , Yuanbao Gu
CPC分类号： H04N5/378 , H03M1/007 , H03M1/10 , H03M1/1009 , H03M1/1042 , H03M1/123 , H03M1/56 , H03M1/58 , H03M2201/2355 , H04N5/2175 , H04N5/357 , H04N5/3698 , H04N5/3745
摘要： A method of an aspect includes acquiring analog image data with a pixel array, and reading out the analog image data from the pixel array. The analog image data is converted to digital image data by performing an analog-to-digital (A/D) conversion using a multiple slope voltage ramp. At least some of the digital image data is adjusted with calibration data. Other methods, apparatus, and systems, are also disclosed.
摘要翻译： 一个方面的方法包括以像素阵列获取模拟图像数据，并从像素阵列中读出模拟图像数据。 通过使用多个斜坡电压斜坡进行模数（A / D）转换，将模拟图像数据转换成数字图像数据。 用校准数据调整至少一些数字图像数据。 还公开了其它方法，装置和系统。
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4.发明授权公开(公告)号：US09894299B2
公开(公告)日：2018-02-13
申请号：US14798111
申请日：2015-07-13
申请人： Sony Corporation
发明人： Kyoichi Kanagawa
CPC分类号： H04N5/359 , H03M1/66 , H03M2201/2355 , H04N5/3575 , H04N5/37455 , H04N5/378
摘要： Provided is an AD converter including a first AD converting unit in which pixel columns of a pixel array are divided into at least two groups, and that compares a first ramp signal and a first pixel signal output from a first group of the pixel columns and performs AD conversion on the first pixel signal; and a second AD converting unit that compares a second ramp signal and a second pixel signal output from a second group of the pixel columns and performs AD conversion on the second pixel signal, in which the first ramp signal is a signal of which a level is decreased with a constant slope over time in a D-phase period for detecting a signal level of a pixel signal, and the second ramp signal is a signal of which a level is increased with a constant slope over time in the D-phase period.
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5.发明授权Ad converter, signal processing method, solid-state imaging device, and electronic apparatus 有权Ad转换器，信号处理方法，固态成像装置和电子装置公开(公告)号：US09106852B2
公开(公告)日：2015-08-11
申请号：US14268496
申请日：2014-05-02
申请人： Sony Corporation
发明人： Kyoichi Kanagawa
CPC分类号： H04N5/359 , H03M1/66 , H03M2201/2355 , H04N5/3575 , H04N5/37455 , H04N5/378
摘要： Provided is an AD converter including a first AD converting unit in which pixel columns of a pixel array are divided into at least two groups, and that compares a first ramp signal and a first pixel signal output from a first group of the pixel columns and performs AD conversion on the first pixel signal; and a second AD converting unit that compares a second ramp signal and a second pixel signal output from a second group of the pixel columns and performs AD conversion on the second pixel signal, in which the first ramp signal is a signal of which a level is decreased with a constant slope over time in a D-phase period for detecting a signal level of a pixel signal, and the second ramp signal is a signal of which a level is increased with a constant slope over time in the D-phase period.
摘要翻译： 提供了一种AD转换器，其包括第一AD转换单元，其中像素阵列的像素列被划分为至少两组，并且比较第一斜坡信号和从第一组像素列输出的第一像素信号，并执行 第一像素信号的AD转换; 以及第二AD转换单元，其比较从第二组像素列输出的第二斜坡信号和第二像素信号，并且对第二像素信号执行AD转换，其中第一斜坡信号是水平的信号 在用于检测像素信号的信号电平的D相周期中以随时间的恒定斜率减小，并且第二斜坡信号是在D相周期中以随时间的恒定斜率增加电平的信号。
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6.发明申请CALIBRATION IN MULTIPLE SLOPE COLUMN PARALLEL ANALOG-TO-DIGITAL CONVERSION FOR IMAGE SENSORS 审中-公开用于图像传感器的多个斜坡平行校准模拟数字转换公开(公告)号：US20140226050A1
公开(公告)日：2014-08-14
申请号：US14257832
申请日：2014-04-21
发明人： Zheng Yang , Guangbin Zhang , Yuanbao Gu
IPC分类号： H04N5/378
CPC分类号： H04N5/378 , H03M1/007 , H03M1/10 , H03M1/1009 , H03M1/1042 , H03M1/123 , H03M1/56 , H03M1/58 , H03M2201/2355 , H04N5/2175 , H04N5/357 , H04N5/3698 , H04N5/3745
摘要： A method of an aspect includes acquiring analog image data with a pixel array, and reading out the analog image data from the pixel array. The analog image data is converted to digital image data by performing an analog-to-digital (A/D) conversion using a multiple slope voltage ramp. At least some of the digital image data is adjusted with calibration data. Other methods, apparatus, and systems, are also disclosed.
摘要翻译： 一个方面的方法包括以像素阵列获取模拟图像数据，并从像素阵列中读出模拟图像数据。 通过使用多个斜坡电压斜坡进行模数（A / D）转换，将模拟图像数据转换成数字图像数据。 用校准数据调整至少一些数字图像数据。 还公开了其它方法，装置和系统。
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7.发明申请CALIBRATION IN MULTIPLE SLOPE COLUMN PARALLEL ANALOG-TO-DIGITAL CONVERSION FOR IMAGE SENSORS 有权用于图像传感器的多个斜坡平行校准模拟数字转换公开(公告)号：US20150103220A1
公开(公告)日：2015-04-16
申请号：US14573978
申请日：2014-12-17
发明人： Zheng Yang , Guangbin Zhang , Yuanbao Gu
CPC分类号： H04N5/378 , H03M1/007 , H03M1/10 , H03M1/1009 , H03M1/1042 , H03M1/123 , H03M1/56 , H03M1/58 , H03M2201/2355 , H04N5/2175 , H04N5/357 , H04N5/3698 , H04N5/3745
摘要： An apparatus includes analog-to-digital (A/D) conversion circuitry coupled to a pixel array. The A/D conversion circuitry includes a voltage ramp generator and a set of column A/D conversion circuits. The voltage ramp generator generates a single slope voltage ramp in a first state and a multiple slope voltage ramp in a second state. The set of column A/D conversion circuits is coupled with the voltage ramp generator. The apparatus further includes calibration circuitry coupled with the set of column A/D conversion circuits and operable to determine digital calibration data to adjust digital image data. The calibration circuitry provides analog calibration data that spans a calibration range to the set of column A/D conversion circuits instead of the analog image data from the pixel array being provided to the set of column A/D conversion circuits.
摘要翻译： 一种装置包括耦合到像素阵列的模数（A / D）转换电路。 A / D转换电路包括电压斜坡发生器和一组列A / D转换电路。 电压斜坡发生器产生处于第一状态的单斜坡电压斜坡和处于第二状态的多斜坡电压斜坡。 该列A / D转换电路与电压斜坡发生器耦合。 该装置还包括与一组列A / D转换电路耦合的校准电路，并且可操作以确定数字校准数据以调整数字图像数据。 校准电路提供将校准范围跨越到A / D转换电路组的模拟校准数据，而不是提供给列A / D转换电路的像素阵列的模拟图像数据。
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8.发明授权Calibration in multiple slope column parallel analog-to-digital conversion for image sensors 有权用于图像传感器的多斜率列并行模数转换的校准公开(公告)号：US08994832B1
公开(公告)日：2015-03-31
申请号：US14573978
申请日：2014-12-17
发明人： Zheng Yang , Guangbin Zhang , Yuanbao Gu
CPC分类号： H04N5/378 , H03M1/007 , H03M1/10 , H03M1/1009 , H03M1/1042 , H03M1/123 , H03M1/56 , H03M1/58 , H03M2201/2355 , H04N5/2175 , H04N5/357 , H04N5/3698 , H04N5/3745
摘要： An apparatus includes analog-to-digital (A/D) conversion circuitry coupled to a pixel array. The A/D conversion circuitry includes a voltage ramp generator and a set of column A/D conversion circuits. The voltage ramp generator generates a single slope voltage ramp in a first state and a multiple slope voltage ramp in a second state. The set of column A/D conversion circuits is coupled with the voltage ramp generator. The apparatus further includes calibration circuitry coupled with the set of column A/D conversion circuits and operable to determine digital calibration data to adjust digital image data. The calibration circuitry provides analog calibration data that spans a calibration range to the set of column A/D conversion circuits instead of the analog image data from the pixel array being provided to the set of column A/D conversion circuits.
摘要翻译： 一种装置包括耦合到像素阵列的模数（A / D）转换电路。 A / D转换电路包括电压斜坡发生器和一组列A / D转换电路。 电压斜坡发生器产生处于第一状态的单斜坡电压斜坡和处于第二状态的多斜坡电压斜坡。 该列A / D转换电路与电压斜坡发生器耦合。 该装置还包括与一组列A / D转换电路耦合的校准电路，并且可操作以确定数字校准数据以调整数字图像数据。 校准电路提供将校准范围跨越到A / D转换电路组的模拟校准数据，而不是提供给列A / D转换电路的像素阵列的模拟图像数据。
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9.发明授权Calibration in multiple slope column parallel analog-to-digital conversion for image sensors 有权用于图像传感器的多斜率列并行模数转换的校准公开(公告)号：US08941527B2
公开(公告)日：2015-01-27
申请号：US14257832
申请日：2014-04-21
发明人： Zheng Yang , Guangbin Zhang , Yuanbao Gu
IPC分类号： H03M1/82 , H03M1/12 , H03M1/56 , H04N5/228 , H04N5/217 , H04N3/14 , H04N5/225 , H04N5/378 , H03M1/10
CPC分类号： H04N5/378 , H03M1/007 , H03M1/10 , H03M1/1009 , H03M1/1042 , H03M1/123 , H03M1/56 , H03M1/58 , H03M2201/2355 , H04N5/2175 , H04N5/357 , H04N5/3698 , H04N5/3745
摘要： A method of an aspect includes acquiring analog image data with a pixel array, and reading out the analog image data from the pixel array. The analog image data is converted to digital image data by performing an analog-to-digital (A/D) conversion using a multiple slope voltage ramp. At least some of the digital image data is adjusted with calibration data. Other methods, apparatus, and systems, are also disclosed.
摘要翻译： 一个方面的方法包括以像素阵列获取模拟图像数据，并从像素阵列中读出模拟图像数据。 通过使用多个斜坡电压斜坡进行模数（A / D）转换，将模拟图像数据转换成数字图像数据。 用校准数据调整至少一些数字图像数据。 还公开了其它方法，装置和系统。
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10.发明申请AD CONVERTER, SIGNAL PROCESSING METHOD, SOLID-STATE IMAGING DEVICE, AND ELECTRONIC APPARATUS 有权AD转换器，信号处理方法，固态成像装置和电子装置公开(公告)号：US20140362271A1
公开(公告)日：2014-12-11
申请号：US14268496
申请日：2014-05-02
申请人： Sony Corporation
发明人： Kyoichi Kanagawa
IPC分类号： H04N5/359 , H04N5/3745 , H04N5/378
CPC分类号： H04N5/359 , H03M1/66 , H03M2201/2355 , H04N5/3575 , H04N5/37455 , H04N5/378
摘要： Provided is an AD converter including a first AD converting unit in which pixel columns of a pixel array are divided into at least two groups, and that compares a first ramp signal and a first pixel signal output from a first group of the pixel columns and performs AD conversion on the first pixel signal; and a second AD converting unit that compares a second ramp signal and a second pixel signal output from a second group of the pixel columns and performs AD conversion on the second pixel signal, in which the first ramp signal is a signal of which a level is decreased with a constant slope over time in a D-phase period for detecting a signal level of a pixel signal, and the second ramp signal is a signal of which a level is increased with a constant slope over time in the D-phase period.
摘要翻译： 提供了一种AD转换器，其包括第一AD转换单元，其中像素阵列的像素列被划分为至少两组，并且比较第一斜坡信号和从第一组像素列输出的第一像素信号，并执行 第一像素信号的AD转换; 以及第二AD转换单元，其比较从第二组像素列输出的第二斜坡信号和第二像素信号，并且对第二像素信号执行AD转换，其中第一斜坡信号是水平的信号 在用于检测像素信号的信号电平的D相周期中以随时间的恒定斜率减小，并且第二斜坡信号是在D相周期中以随时间的恒定斜率增加电平的信号。
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