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    • 3. 发明授权
    • Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
    • 数据信号放大器和具有多个信号增益的处理器可增加动态信号范围
    • US07002408B2
    • 2006-02-21
    • US10685787
    • 2003-10-15
    • Pieter Gerhard RoosEdward SeppiRichard ColbethGary VirshupIvan Petrov Mollov
    • Pieter Gerhard RoosEdward SeppiRichard ColbethGary VirshupIvan Petrov Mollov
    • H03F1/36
    • H03F3/08H03M1/18
    • Data signal amplification and processing circuitry with multiple signal gains for increasing dynamic signal range. An incoming data signal is processed in accordance with multiple signal gains. The resultant signals have multiple signal values which are compared to predetermined lower and higher thresholds. The desired output signal is: the maximum sample signal value when the maximum value fails to traverse a predetermined lower threshold; the minimum sample signal value when an adjacent larger one of the plurality of sample signal values traverses a predetermined higher threshold; a smaller of mutually adjacent ones of a pair of the plurality of sample signal values when a larger one of the pair of sample signal values traverses the predetermined higher threshold and the smaller value fails to traverse the predetermined lower threshold; and a combination of the smaller and larger ones of the pair of sample signal values when the larger value traverses the predetermined lower threshold and fails to traverse the predetermined higher threshold.
    • 具有多个信号增益的数据信号放大和处理电路,用于增加动态信号范围。 输入数据信号根据多个信号增益进行处理。 所得信号具有与预定的较低和较高阈值进行比较的多个信号值。 所需输出信号为:当最大值不能穿过预定的下限阈值时的最大采样信号值; 当所述多个采样信号值中的相邻较大的一个采样信号值穿过预定的较高阈值时的所述最小采样信号值; 当所述一对采样信号值中的较大的一个采样信号值越过所述预定的较高阈值且所述较小值不能穿过所述预定的下限阈值时,所述多个采样信号值对中的较小的一个; 以及当较大值穿过预定的下阈值并且不能穿过预定的较高阈值时,该对采样信号值中的较小和较大的采样信号值的组合。
    • 4. 发明授权
    • Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
    • 数据信号放大器和具有多个信号增益的处理器可增加动态信号范围
    • US07180366B2
    • 2007-02-20
    • US11283422
    • 2005-11-18
    • Pieter Gerhard RoosEdward SeppiRichard ColbethGary VirshupIvan Petrov Mollov
    • Pieter Gerhard RoosEdward SeppiRichard ColbethGary VirshupIvan Petrov Mollov
    • H03F1/36
    • H03F3/08H03M1/18
    • Data signal amplification and processing circuitry with multiple signal gains for increasing dynamic signal range. An incoming data signal is processed in accordance with multiple signal gains. The resultant signals have multiple signal values which are compared to predetermined lower and higher thresholds. The desired output signal is: the maximum sample signal value when the maximum value fails to traverse a predetermined lower threshold; the minimum sample signal value when an adjacent larger one of the plurality of sample signal values traverses a predetermined higher threshold; a smaller of mutually adjacent ones of a pair of the plurality of sample signal values when a larger one of the pair of sample signal values traverses the predetermined higher threshold and the smaller value fails to traverse the predetermined lower threshold; and a combination of the smaller and larger ones of the pair of sample signal values when the larger value traverses the predetermined lower threshold and fails to traverse the predetermined higher threshold.
    • 具有多个信号增益的数据信号放大和处理电路,用于增加动态信号范围。 输入数据信号根据多个信号增益进行处理。 所得信号具有与预定的较低和较高阈值进行比较的多个信号值。 所需输出信号为:当最大值不能穿过预定的下限阈值时的最大采样信号值; 当所述多个采样信号值中的相邻较大的一个采样信号值穿过预定的较高阈值时的所述最小采样信号值; 当所述一对采样信号值中的较大的一个采样信号值越过所述预定的较高阈值且所述较小值不能穿过所述预定的下限阈值时,所述多个采样信号值对中的较小的一个; 以及当较大值穿过预定的下阈值并且不能穿过预定的较高阈值时,该对采样信号值中的较小和较大的采样信号值的组合。
    • 5. 发明申请
    • Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
    • 数据信号放大器和具有多个信号增益的处理器可增加动态信号范围
    • US20050083120A1
    • 2005-04-21
    • US10685787
    • 2003-10-15
    • Pieter RoosEdward SeppiRichard ColbethGary VirshupIvan Mollov
    • Pieter RoosEdward SeppiRichard ColbethGary VirshupIvan Mollov
    • H03F20060101H03F1/36
    • H03F3/08H03M1/18
    • Data signal amplification and processing circuitry with multiple signal gains for increasing dynamic signal range. An incoming data signal is processed in accordance with multiple signal gains. The resultant signals have multiple signal values which are compared to predetermined lower and higher thresholds. The desired output signal is: the maximum sample signal value when the maximum value fails to traverse a predetermined lower threshold; the minimum sample signal value when an adjacent larger one of the plurality of sample signal values traverses a predetermined higher threshold; a smaller of mutually adjacent ones of a pair of the plurality of sample signal values when a larger one of the pair of sample signal values traverses the predetermined higher threshold and the smaller value fails to traverse the predetermined lower threshold; and a combination of the smaller and larger ones of the pair of sample signal values when the larger value traverses the predetermined lower threshold and fails to traverse the predetermined higher threshold.
    • 具有多个信号增益的数据信号放大和处理电路,用于增加动态信号范围。 输入数据信号根据多个信号增益进行处理。 所得信号具有与预定的较低和较高阈值进行比较的多个信号值。 所需输出信号为:当最大值不能穿过预定的下限阈值时的最大采样信号值; 当所述多个采样信号值中的相邻较大的一个采样信号值穿过预定的较高阈值时的所述最小采样信号值; 当所述一对采样信号值中的较大的一个采样信号值越过所述预定的较高阈值且所述较小值不能穿过所述预定的下限阈值时,所述多个采样信号值对中的较小的一个; 以及当较大值穿过预定的下阈值并且不能穿过预定的较高阈值时,该对采样信号值中的较小和较大的采样信号值的组合。
    • 6. 发明授权
    • Data signal amplifier with automatically controllable dynamic signal range
    • 数据信号放大器可自动控制动态信号范围
    • US06486808B1
    • 2002-11-26
    • US09978727
    • 2001-10-16
    • Edward SeppiEdward ShapiroGeorge ZentaiRichard Colbeth
    • Edward SeppiEdward ShapiroGeorge ZentaiRichard Colbeth
    • H03M184
    • H03M1/129H03M1/18H04N5/235H04N5/243H04N5/32
    • A preamplifier stage with dynamically controllable signal gain in a data signal processing circuit that includes a downstream analog-to-digital signal converter. The level of the data signal subsequent to its preamplification is monitored and the gain of the preamplifier stage is dynamically adjusted in response to such data signal transcending one or more predetermined thresholds. Hence, the effective dynamic range of the preamplifier stage is extended, thereby also effectively extending the dynamic range of the overall system beyond that to which it would have otherwise been limited by the dynamic range of the analog-to-digital signal converter. In accordance with a preferred embodiment of the invention, such a preamplifier is used in an X-ray imaging system such as that using flat panel solid state imaging devices.
    • 一种在包括下游模拟 - 数字信号转换器的数据信号处理电路中具有动态可控的信号增益的前置放大器级。 监视其预放大之后的数据信号的电平,并响应于超过一个或多个预定阈值的这种数据信号来动态调整前置放大器级的增益。 因此,前置放大器级的有效动态范围被扩展,从而也有效地扩展了整个系统的动态范围,超出了其将被模拟 - 数字信号转换器的动态范围所限制的范围。 根据本发明的优选实施例,这种前置放大器用于诸如使用平板固态成像装置的X射线成像系统中。
    • 10. 发明申请
    • Multi-slice flat panel computed tomography
    • 多层平板计算机断层扫描
    • US20050082488A1
    • 2005-04-21
    • US10687552
    • 2003-10-15
    • Ivan MollovRichard Colbeth
    • Ivan MollovRichard Colbeth
    • A61B20060101G21K1/12
    • A61B6/032A61B6/4233A61B6/4411A61B6/4441A61B6/5205G01T1/2018H04N5/32H04N5/374H04N5/378
    • A method for collecting signals from a detector that has a plurality of lines of image elements includes sending a control signal to a gate driver to select transistor gates for two or more lines of image elements, and simultaneously passing signals from the two or more lines of image elements to charge amplifiers that are coupled to the image elements. A method for collecting signals from a detector that has a plurality of imagers is provided. Each of the imagers has a plurality of lines of image elements. The method includes sending a control signal to a gate driver to select one or more lines of image elements on each of the plurality of the imagers, and simultaneously passing signals from the selected one or more lines of image elements on each of the plurality of the imagers to charge amplifiers that are coupled to the image elements.
    • 用于从具有多行图像元件的检测器收集信号的方法包括向栅极驱动器发送控制信号以选择用于两行或更多行图像元素的晶体管栅极,并且同时从两条或更多条线 图像元件以对与图像元件耦合的放大器进行电荷充电。 提供了一种用于从具有多个成像器的检测器收集信号的方法。 每个成像器具有多行图像元素。 该方法包括向栅极驱动器发送控制信号以选择多个成像器中的每一个上的一行或多行图像元素,并且同时从多个图像元素中的每一个上的所选择的一行或多行图像元素传递信号 成像器对与图像元件耦合的放大器进行电荷充电。