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公开(公告)号：US08847809B2
公开(公告)日：2014-09-30
申请号：US13289202
申请日：2011-11-04
申请人： Alexander I. Krymski
发明人： Alexander I. Krymski
摘要： An A/D converter suitable for use in a system in which the signal power of noise increases with the signal power of the signal, such as an imaging system, utilizes a variable quantization system for converting analog signals into digital signals. The variable quantization is controlled so that low signal levels the quantization is similar or identical to conventional A/D converters, while the quantization level is increased at higher signal levels. Thus, higher resolution is provided at low signal levels while lower resolution is produced at high signal levels.
摘要翻译： 适用于其中噪声信号功率随着信号的信号功率（诸如成像系统）增加的系统中的A / D转换器利用可变量化系统将模拟信号转换为数字信号。 控制可变量化，使得低信号电平的量化与常规A / D转换器相似或相同，而量化电平在较高信号电平下增加。 因此，在低信号电平下提供更高的分辨率，而在高信号电平下产生较低的分辨率。
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2.发明授权公开(公告)号：US08040268B2
公开(公告)日：2011-10-18
申请号：US12948775
申请日：2010-11-18
申请人： Tzung-Hung Kang
发明人： Tzung-Hung Kang
IPC分类号： H03M1/36
CPC分类号： H03M1/367 , H03M1/1295 , H03M1/183 , H03M1/362
摘要： A data readout system with non-uniform resolution has a pick up head for reading data stored in an optical disc and generating an analog signal, a reference voltage unit for producing a plurality of reference voltage levels, wherein voltage differences between two adjacent reference voltage levels are not all the same, a plurality of comparators for comparing the reference voltage levels with the analog signal and generating comparison results, and an encoder for encoding the comparison results into a digital signal.
摘要翻译： 具有不均匀分辨率的数据读出系统具有用于读取存储在光盘中的数据并产生模拟信号的拾取头，用于产生多个参考电压电平的参考电压单元，其中两个相邻参考电压电平之间的电压差 多个比较器，用于将参考电压电平与模拟信号进行比较并产生比较结果;以及编码器，用于将比较结果编码为数字信号。
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公开(公告)号：US07382306B2
公开(公告)日：2008-06-03
申请号：US11557302
申请日：2006-11-07
申请人： Ken Takahashi
发明人： Ken Takahashi
IPC分类号： H03M1/34
CPC分类号： H03M1/367
摘要： An AD converter includes: a reference voltage generator circuit having a plurality of resistors connected in series with predetermined reference voltage applied to both ends thereof, the reference voltage being divided at connecting points between the individual resistors to generate a plurality of reference voltages; a voltage comparator circuit configured to compare the plurality of reference voltages and analog input signals for conversion into predetermined comparison output signals; and a variable voltage circuit connected to the connecting points of the reference voltage generator circuit and provided with a control signal input terminal inputted with control signals, configured to set an output voltage to be outputted to the connecting points at a predetermined value based on the control signals.
摘要翻译： AD转换器包括：参考电压发生器电路，其具有与施加到其两端的预定参考电压串联的多个电阻器，参考电压在各个电阻器之间的连接点处被分压以产生多个参考电压; 电压比较器电路，被配置为将所述多个参考电压和模拟输入信号进行比较以转换成预定的比较输出信号; 以及可变电压电路，其连接到所述参考电压发生器电路的连接点，并且设置有输入有控制信号的控制信号输入端子，所述控制信号输入端子基于所述控制信号设定输出到所述连接点的预定值 信号。
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4.发明申请公开(公告)号：US20060125672A1
公开(公告)日：2006-06-15
申请号：US10537670
申请日：2003-11-28
IPC分类号： H03M1/12
CPC分类号： H03M1/188 , H03M1/1235 , H03M1/367
摘要： A method, apparatus, and system for converting an input voltage VIN to a digital output. A comparison of VIN with reference voltages in one or more flash-type analog-to-digital (A/D) converters generates the digital output representing VIN. If one A/D converter is used, the A/D converter is non-linear. If more than one A/D converter are used, the A/D converters are each linear.
摘要翻译： 一种用于将输入电压VIN转换为数字输出的方法，装置和系统。 在一个或多个闪存型模拟（A / D）转换器中，VIN与参考电压的比较产生表示VIN的数字输出。 如果使用一个A / D转换器，则A / D转换器是非线性的。 如果使用多个A / D转换器，则A / D转换器各自是线性的。
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5.发明授权公开(公告)号：US06977603B1
公开(公告)日：2005-12-20
申请号：US09711379
申请日：2000-11-09
申请人： Sandor Barna , Daniel Van Blerkom , Eric R. Fossum
发明人： Sandor Barna , Daniel Van Blerkom , Eric R. Fossum
摘要： A non-uniform resistor is used with a flash A to D converter in order to provide an A to D output which is not linear. The nonlinearity of the A to D output is specially designed to carry out a predetermined correction of the signal.
摘要翻译： 闪光A到D转换器使用不均匀的电阻，以提供不是线性的A到D输出。 A到D输出的非线性特别设计用于执行信号的预定校正。
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公开(公告)号：US5343201A
公开(公告)日：1994-08-30
申请号：US331171
申请日：1989-03-31
申请人： Tsutomu Takayama , Kan Takaiwa
发明人： Tsutomu Takayama , Kan Takaiwa
摘要： An A-D converter of an image signal comprises a weighing circuit for performing a different weighing for each quantization step of A/D conversion. The different weighing is performed in accordance with gamma or white compression characteristics of the image signal.
摘要翻译： 图像信号的A-D转换器包括用于对A / D转换的每个量化步进执行不同称重的称重电路。 根据图像信号的伽马或白色压缩特性进行不同称重。
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7.发明申请公开(公告)号：US20110063153A1
公开(公告)日：2011-03-17
申请号：US12948775
申请日：2010-11-18
申请人： Tzung-Hung Kang
发明人： Tzung-Hung Kang
CPC分类号： H03M1/367 , H03M1/1295 , H03M1/183 , H03M1/362
摘要： A data readout system with non-uniform resolution has a pick up head for reading data stored in an optical disc and generating an analog signal, a reference voltage unit for producing a plurality of reference voltage levels, wherein voltage differences between two adjacent reference voltage levels are not all the same, a plurality of comparators for comparing the reference voltage levels with the analog signal and generating comparison results, and an encoder for encoding the comparison results into a digital signal.
摘要翻译： 具有不均匀分辨率的数据读出系统具有用于读取存储在光盘中的数据并产生模拟信号的拾取头，用于产生多个参考电压电平的参考电压单元，其中两个相邻参考电压电平之间的电压差 多个比较器，用于将参考电压电平与模拟信号进行比较并产生比较结果;以及编码器，用于将比较结果编码为数字信号。
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8.发明授权公开(公告)号：US07696915B2
公开(公告)日：2010-04-13
申请号：US12108791
申请日：2008-04-24
申请人： Erik Chmelar , Choshu Ito
发明人： Erik Chmelar , Choshu Ito
IPC分类号： H03M1/36
摘要： An ADC circuit includes multiple comparators and a controller coupled to the comparators. Each of the comparators is operative to generate an output indicative of a difference between a first signal representative of an input signal applied to the ADC circuit and a corresponding reference signal. The controller is operative to perform at least one of: (i) activating a subset of the comparators during a given sample period being; and (ii) controlling levels of the corresponding reference signals of the comparators as a function of a level of the input signal. A number of active comparators during the given sample period is no greater than one less than a number of regions into which the input signal is quantized.
摘要翻译： ADC电路包括多个比较器和耦合到比较器的控制器。 每个比较器可操作以产生指示表示施加到ADC电路的输入信号的第一信号与对应的参考信号之间的差的输出。 控制器可操作以执行以下至少之一：（i）在给定的采样周期期间激活比较器的子集; 和（ii）根据输入信号的电平来控制比较器的相应参考信号的电平。 给定采样周期内的多个有源比较器不小于输入信号被量化的区域数量的一个。
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9.发明授权公开(公告)号：US07432839B2
公开(公告)日：2008-10-07
申请号：US11679615
申请日：2007-02-27
申请人： Volker Christ
发明人： Volker Christ
摘要： Embodiments of an analog-to-digital converter (ADC) and methods for controlling RF power levels are generally described herein. Other embodiments may be described and claimed. In some embodiments, the ADC includes an internal-reference digital-to-analog converter (DAC) having a resistive structure with linearly-spaced contact nodes. The linearly-spaced contact nodes may provide corresponding reference voltages that vary exponentially with respect to the linearly-spaced contact nodes allowing the ADC to achieve a logarithmic response.
摘要翻译： 模数转换器（ADC）的实施例和用于控制RF功率电平的方法在本文中大体上被描述。 可以描述和要求保护其他实施例。 在一些实施例中，ADC包括具有线性间隔的接触节点的电阻结构的内部参考数模转换器（DAC）。 线性间隔的接触节点可以提供相对于线性间隔的接触节点呈指数变化的相应参考电压，允许ADC实现对数响应。
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10.发明申请DIGITAL-TO-ANALOG CONVERTER WITH LOGARITHMIC SELECTABLE RESPONSE AND METHODS 失效具有逻辑选择性响应的数字到模拟转换器和方法公开(公告)号：US20080204291A1
公开(公告)日：2008-08-28
申请号：US11679654
申请日：2007-02-27
申请人： Volker Christ
发明人： Volker Christ
IPC分类号： H03M1/66
摘要： Embodiments of a digital-to-analog converter (DAC) with a logarithmic response and methods for converting digital signals to analog are generally described herein. Other embodiments may be described and claimed. In some embodiments, the DAC includes a wedge-shaped resistive array having a plurality of linearly-spaced contact nodes and a switching array to selectively couple one of the contact nodes with an analog output based on a control signal. Each of the contact nodes may provide a corresponding reference voltage that varies logarithmically with respect to the linearly-spaced contact nodes.
摘要翻译： 具有对数响应的数模转换器（DAC）和用于将数字信号转换为模拟的方法的实施例一般地在此描述。 可以描述和要求保护其他实施例。 在一些实施例中，DAC包括具有多个线性间隔接触节点的楔形电阻阵列和用于基于控制信号选择性地将接触节点之一与模拟输出耦合的开关阵列。 每个接触节点可以提供相对于线性间隔的接触节点对数变化的对应参考电压。
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