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    • 3. 发明申请
    • IMAGING DETECTOR WITH IMPROVED SPATIAL ACCURACY
    • 成像检测器具有改进的空间精度
    • WO2017025844A1
    • 2017-02-16
    • PCT/IB2016/054495
    • 2016-07-28
    • KONINKLIJKE PHILIPS N.V.
    • CHAPPO, Marc Anthony
    • G01T1/17H04N5/32
    • G01T1/17H03M1/145H03M1/466H03M1/60H04N5/32
    • A detector array (112) of an imaging system (100)includes a radiation sensitive detector (202/204/206) configured to detect radiation and generates a signal indicative thereof and electronics (208) in electrical communication with the radiation sensitive detector. The electronics include a current-to-frequency converter (300) configured to convert the signal into a pulse train having a frequency indicative of a charge collected during an integration period. The electronics further include a residual charge collection circuit (322) electrically coupled to current-to-frequency converter. The residual charge collection circuit is configured to store charge collected by the integrator for an end portion of the integration period that does not results in a pulse of the pulse train, utilizing much of the electronics already in the current-to-frequency converter electronics.
    • 成像系统(100)的检测器阵列(112)包括被配置为检测辐射并产生指示信号的辐射敏感检测器(202/204/206)和与辐射敏感检测器电连通的电子器件(208)。 电子设备包括电流 - 频率转换器(300),其被配置为将信号转换成具有指示在积分周期期间收集的电荷的频率的脉冲串。 电子设备还包括电耦合到电流 - 频率转换器的剩余电荷收集电路(322)。 剩余电荷收集电路被配置为存储积分器收集的电荷,用于不产生脉冲序列的脉冲的积分周期的端部,利用电流到频率转换器电子器件中的大部分电子器件。
    • 4. 发明申请
    • 분리 형태의 듀얼 캐패시터 어레이를 가지는 연속 근사 레지스터 아날로그 디지털 변환기
    • 具有可分离双电容阵列的后续近似电阻模数转数转换器
    • WO2016017898A1
    • 2016-02-04
    • PCT/KR2015/003547
    • 2015-04-09
    • 중앙대학교 산학협력단
    • 백광현조성진김주언이창우
    • H03M1/38
    • H03M1/38H03M1/1245H03M1/466H03M1/468H03M1/68
    • 분리 형태의 듀얼 캐패시터 어레이를 가지는 연속 근사 레지스터 아날로그 디지털 변환기가 개시된다. 개시된 연속 근사 레지스터 아날로그 디지털 변환기는 n 비트 중에서, 상위 비트들을 변환하기 위한 제1 캐패시터 어레이 및 하위 비트들을 변환하기 위한 제2 캐패시터 어레이를 포함하는 듀얼 캐패시터 어레이; 상기 제1 캐패시터 어레이에서 출력된 레벨 신호 및 상기 제2 캐패시터 어레이에서 출력된 레벨 신호를 비교하는 비교기; 및 상기 비교 결과를 이용하여 아날로그 입력 전압을 상기 n 비트의 디지털 신호로 변환하는 SAR 논리 회로;를 포함하되, 상기 제1 캐패시터 어레이는 제1-1 캐패시터부 및 제1-2 캐패시터부를 포함하고, 상기 제2 캐패시터 어레이는 제2-1 캐패시터부 및 제2-2 캐패시터부를 포함하되, 상기 캐패시터부 각각은 병렬 연결된 복수의 캐패시터를 포함한다.
    • 公开了具有可分离双电容器阵列的逐次逼近电阻模数转换器。 所公开的逐次逼近模数转换器包括:双电容器阵列,包括用于转换n位中的高位的第一电容器阵列和用于从n位转换低位的第二电容器阵列; 比较器,用于比较从第一电容器阵列输出的电平信号和从第二电容器阵列输出的电平信号; 以及SAR逻辑电路,用于通过利用比较结果将模拟输入电压转换成n位的数字信号,其中第一电容器阵列包括1-1电容器单元和1-2电容器单元,第二电容器 阵列包括2-1电容器单元和2-2电容器单元,每个电容器单元包括并联连接的多个电容器。
    • 6. 发明申请
    • SUCCESSIVE APPROXIMATION REGISTER ANALOG TO DIGITAL CONVERTER CIRCUIT
    • 数字近似寄存器模拟数字转换器电路
    • WO2011151671A1
    • 2011-12-08
    • PCT/IB2010/002919
    • 2010-11-17
    • INDIAN INSTITUTE OF TECHNOLOGY BOMBAYBAGHINI, Maryam, ShojaeiHANDE, Vinayak, Gopal
    • BAGHINI, Maryam, ShojaeiHANDE, Vinayak, Gopal
    • H03M1/12H03M1/38
    • H03M1/466
    • Techniques are generally described herein for analog to digital conversion. Some example ADC converters include a unit capacitor array coupled to a reference voltage, where the capacitor array includes multiple capacitors coupled to one another via multiple switches under control of a control block. A comparator, having a first input and a second input, is configured to receive a controlled voltage generated from the unit capacitor array and compare an analog voltage to the controlled voltage. The control block is configured to selectively open or close the switches, receive a comparison result from the comparator, and generate a digital output based on the comparison result. The control block is configured to control the switch timing of the unit capacitor array for reset, pre-charge, charge redistribution, and comparison phases, where a passive charge redistribution method may be utilized.
    • 这里通常描述用于模数转换的技术。 一些示例ADC转换器包括耦合到参考电压的单元电容器阵列,其中电容器阵列包括通过控制块控制下的多个开关彼此耦合的多个电容器。 具有第一输入和第二输入的比较器被配置为接收从单位电容器阵列产生的受控电压并将模拟电压与受控电压进行比较。 控制块被配置为选择性地打开或关闭开关,从比较器接收比较结果,并且基于比较结果生成数字输出。 控制块被配置为控制用于复位,预充电,电荷再分配和比较阶段的单位电容器阵列的开关定时,其中可以使用无源电荷再分配方法。
    • 10. 发明申请
    • OVERSAMPLING NOISE-SHAPING SUCCESSIVE APPROXIMATION ADC
    • 过冲噪声成像逼近ADC
    • WO2016087869A1
    • 2016-06-09
    • PCT/GB2015/053708
    • 2015-12-03
    • ATLANTIC INERTIAL SYSTEMS LIMITED
    • DURSTON, Michael TerrenceTOWNSEND, KevinSITCH, Douglas Robert
    • H03M1/06H03M1/46
    • H03M1/08H03M1/0658H03M1/462H03M1/466H03M1/468H03M1/804
    • A successive approximation Analogue to Digital Converter (ADC), comprising: a sample and hold device arranged to sample and hold an input signal at the beginning of a conversion cycle; a successive approximation register that sequentially builds up a digital output from its most significant bit to its least significant bit; a digital to analogue converter that outputs a signal based on the output of the successive approximation register; a comparator that compares the output of the digital to analogue converter with an output of the sample and hold device and supplies its output to the successive approximation register; and a residual signal storage device arranged to store the residual signal at the end of a conversion cycle; and wherein the successive approximation ADC is arranged to add the stored residual signal from the residual signal storage device to the input signal stored on the sample and hold device at the start of each conversion cycle. After each ADC full conversion by the SAR, the analogue conversion of the digital output is as close to the original input signal as the resolution will allow. However there remains the residual part of the input signal that is smaller than what can be represented by the least significant bit of the digital output of the SAR. In normal operation, successive outputs of a SAR for the same input will result in the same digital value output and the same residual. By storing the residual at the end of each conversion and adding the residual onto the input signal of the next conversion the residuals are accumulated over time so that they may affect the output digital value. After a number of conversions, the accumulated residuals add up to more than the value represented by the LSB of the register and the digital value will be one higher than if a conversion had been performed on the input signal alone. In this way, the residual signal affects the output value in time and thus can be taken into account by processing the digital output in the time domain.
    • 一种逐次逼近的模数转换器(ADC),包括:采样和保持装置,被布置成在转换周期开始时对输入信号进行采样和保持; 逐次逼近寄存器,从最高有效位到其最低有效位顺序建立数字输出; 数模转换器,其基于逐次逼近寄存器的输出输出信号; 比较器,将数模转换器的输出与采样和保持装置的输出进行比较,并将其输出提供给逐次逼近寄存器; 以及残余信号存储装置,被布置成在转换周期结束时存储所述残余信号; 并且其中所述逐次逼近ADC被布置为在每个转换周期开始时将存储的残留信号从残留信号存储装置添加到存储在采样和保持装置上的输入信号。 在通过SAR进行每次ADC完全转换后,数字输出的模拟转换与分辨率允许的原始输入信号相近。 然而,输入信号的剩余部分仍然比由SAR的数字输出的最低有效位表示的少。 在正常操作中,相同输入的SAR的连续输出将导致相同的数字值输出和相同的残差。 通过在每个转换结束时存储残差,并将残差加到下一转换的输入信号上,残差随着时间的推移而累积,从而可能影响输出数字值。 经过多次转换后,累计残差加起来高于寄存器LSB的值,数字值比单独输入信号进行转换时要高一个。 以这种方式,残留信号及时影响输出值,因此可以通过在时域中处理数字输出来考虑。