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公开(公告)号：US07246027B2
公开(公告)日：2007-07-17
申请号：US11078150
申请日：2005-03-11
Applicant: Marcus W. May , Matthew D. Felder
Inventor： Marcus W. May , Matthew D. Felder
IPC: G01K1/00
CPC classification number: G06F17/5063
Abstract: A method and apparatus for conserving power of a mixed-signal system-on-a-chip having analog circuitry, involving determination of an analog variation parameter that is representative of an integrated circuit fabrication process variance of the integrated circuit, and an operational temperature associated with the analog variation parameter. With the analog variation parameter and the operational temperature, an adjustment signal is determined for a power supply level of the integrated circuit, such that power consumption of the integrated circuit is optimized. Further, in mixed-signal integrated circuits with digital and analog circuitry, a digital variation parameter is determined, where the adjustment signal determination is based on the digital variation parameter and the analog variation parameter with respect to the operational temperature. With such a method and apparatus, power consumption is optimized on an IC-by-IC basis such that power consumption of each IC is optimized.
Abstract translation: 一种用于节省具有模拟电路的混合信号系统芯片的功率的方法和装置，涉及确定代表集成电路的集成电路制造工艺变化的模拟变化参数以及与该功能相关联的工作温度 具有模拟变化参数。 利用模拟变化参数和操作温度，确定集成电路的电源电平的调整信号，使得集成电路的功耗被优化。 此外，在具有数字和模拟电路的混合信号集成电路中，确定数字变化参数，其中调整信号确定基于数字变化参数和相对于工作温度的模拟变化参数。 利用这样的方法和装置，在逐个IC的基础上优化功率消耗，从而优化每个IC的功耗。
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32.发明授权公开(公告)号：US07209069B2
公开(公告)日：2007-04-24
申请号：US11105015
申请日：2005-04-13
Applicant: Matthew D. Felder
Inventor： Matthew D. Felder
IPC: H03M1/34
Abstract: A successive approximation Analog-to-Digital Converter (“ADC”) having a successive approximation controller operably coupled to convert a control signal into a digital output of the successive approximation ADC, a current-steered Digital-to-Analog Converter operably coupled to convert the digital output of the successive approximation ADC into an analog feedback signal, and a comparator module operably coupled to compare the analog feedback signal with an analog input of the successive approximation ADC to produce the control signal. A further aspect is a method for increasing accuracy for a digital successive approximation of an analog input signal. The method includes determining a signal characteristic of the analog input signal to an Analog-to-Digital Converter (“ADC”), and selecting a reference voltage source of a Digital-to-Analog Converter of the ADC from a plurality of reference voltage sources based on the analog input signal.
Abstract translation: 具有可操作地耦合以将控制信号转换成逐次逼近ADC的数字输出的逐次逼近控制器的逐次逼近模数转换器（“ADC”），可操作地耦合到转换器的电流转向数字 - 模拟转换器 逐次逼近ADC的数字输出转换为模拟反馈信号，以及可操作地耦合以将模拟反馈信号与逐次逼近ADC的模拟输入进行比较以产生控制信号的比较器模块。 另一方面是用于提高模拟输入信号的数字逐次逼近的精度的方法。 该方法包括确定模拟输入信号到模数转换器（“ADC”）的信号特性，以及从多个参考电压源中选择ADC的数模转换器的参考电压源 基于模拟输入信号。
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公开(公告)号：US07821501B2
公开(公告)日：2010-10-26
申请号：US11304306
申请日：2005-12-14
Applicant: Matthew D. Felder
Inventor： Matthew D. Felder
IPC: G09G5/00
CPC classification number: G06F3/045 , G06F3/0412
Abstract: A touch screen driver includes a conditioner module for conditioning a first input/output port of a touch screen. The conditioner module includes a precharge module for charging the first input/output port to a precharge voltage in response to a precharge signal, and a pull-up module for maintaining the precharge voltage for detecting a touch event.
Abstract translation: 触摸屏驱动器包括用于调节触摸屏的第一输入/输出端口的调节器模块。 调节器模块包括用于响应于预充电信号将第一输入/输出端口充电到预充电电压的预充电模块，以及用于保持用于检测触摸事件的预充电电压的上拉模块。
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公开(公告)号：US07676206B2
公开(公告)日：2010-03-09
申请号：US11294663
申请日：2005-12-05
Applicant: Lawrence Henry Ragan , Matthew D. Felder , Jingyu Hu , Jamie Joseph Happ , Michael R. May
Inventor： Lawrence Henry Ragan , Matthew D. Felder , Jingyu Hu , Jamie Joseph Happ , Michael R. May
CPC classification number: H04B1/18
Abstract: A radio receiver front-end includes a tunable antenna interface and a low noise amplifying section. The tunable antenna interface is operably coupled to receive a wide bandwidth signal from an antenna, wherein the wide bandwidth signal includes a plurality of channel signals, and wherein the tunable antenna interface is tuned to pass a selected one of the plurality of channel signals substantially unattenuated and to attenuate remaining ones of the plurality of channel signals to produce a filtered wide bandwidth signal. The low noise amplifying section is operably coupled to amplify the filtered wide bandwidth signal to produce a filtered and amplified wide bandwidth signal.
Abstract translation: 无线电接收机前端包括可调谐天线接口和低噪声放大部分。 可调谐天线接口可操作地耦合以从天线接收宽带宽信号，其中宽带宽信号包括多个信道信号，并且其中可调谐天线接口被调谐以将多个信道信号中选定的一个信道基本上未衰减 并衰减多个信道信号中剩余的信道信号，以产生滤波的宽带宽信号。 低噪声放大部分可操作地耦合以放大经滤波的宽带宽信号以产生滤波和放大的宽带宽信号。
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公开(公告)号：US07583216B2
公开(公告)日：2009-09-01
申请号：US11863631
申请日：2007-09-28
Applicant: Matthew D. Felder , Marcus W. May , Michael R. May
Inventor： Matthew D. Felder , Marcus W. May , Michael R. May
IPC: H03M1/66
Abstract: A digital to analog converter (DAC) includes at least one digital to analog conversion module and a gated termination. The at least one digital to analog conversion module is coupled to convert at least one bit of a digital signal into an analog signal. The gated termination is coupled to an analog output of the at least one digital to analog conversion module to provide a first termination when a termination selection signal is in a first state and to provide a second termination when the termination selection signal is in a second state.
Abstract translation: 数模转换器（DAC）包括至少一个数模转换模块和门控终端。 所述至少一个数模转换模块被耦合以将数字信号的至少一位转换为模拟信号。 门控终端耦合到至少一个数模转换模块的模拟输出，以在端接选择信号处于第一状态时提供第一终端，并且当终端选择信号处于第二状态时提供第二终端 。
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Patent Agency Ranking
公开(公告)号：US20090085782A1
公开(公告)日：2009-04-02
申请号：US11863631
申请日：2007-09-28
Applicant: Matthew D. Felder , Marcus W. May , Michael R. May
Inventor： Matthew D. Felder , Marcus W. May , Michael R. May
Abstract: A digital to analog converter (DAC) includes at least one digital to analog conversion module and a gated termination. The at least one digital to analog conversion module is coupled to convert at least one bit of a digital signal into an analog signal. The gated termination is coupled to an analog output of the at least one digital to analog conversion module to provide a first termination when a termination selection signal is in a first state and to provide a second termination when the termination selection signal is in a second state.
Abstract translation: 数模转换器（DAC）包括至少一个数模转换模块和门控终端。 所述至少一个数模转换模块被耦合以将数字信号的至少一位转换为模拟信号。 门控终端耦合到至少一个数模转换模块的模拟输出，以在端接选择信号处于第一状态时提供第一终端，并且当终端选择信号处于第二状态时提供第二终端 。
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公开(公告)号：US07382111B2
公开(公告)日：2008-06-03
申请号：US11189307
申请日：2005-07-26
Applicant: Matthew D. Felder
Inventor： Matthew D. Felder
CPC classification number: H02J7/0031
Abstract: An overvoltage and backflow current protection circuit is employed when charging a battery. A switching circuit controls bias to the protection circuit to switch between overvoltage protection and backflow current protection.
Abstract translation: 在对电池充电时采用过电压和回流电流保护电路。 开关电路控制对保护电路的偏置，以在过电压保护和回流电流保护之间切换。
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公开(公告)号：US20080100224A1
公开(公告)日：2008-05-01
申请号：US11799363
申请日：2007-05-01
Applicant: Matthew D. Felder , Matthew Ross Williamson , Jingyu Hu , Jamie Joseph Happ
Inventor： Matthew D. Felder , Matthew Ross Williamson , Jingyu Hu , Jamie Joseph Happ
IPC: H05B37/02
CPC classification number: H05B33/0851 , H05B33/0815
Abstract: A backlight control module includes a gain module, a variable voltage reference, a comparator, and a pulse width modulator. The gain module is coupled to amplify a representation of LED current to produce an amplified current sense signal. The variable voltage reference source is coupled to produce a reference voltage based on the backlight setting to produce a representation of the backlight setting. The comparator is coupled to compare the reference voltage with the amplified current sense signal to produce the comparison signal. The pulse width modulator is coupled to produce a pulse width modulated (PWM) signal as the brightness control signal based on the comparison signal, wherein the brightness control signal is provided to an off-chip variable supply voltage source that provides power to the off-chip LED.
Abstract translation: 背光控制模块包括增益模块，可变电压基准，比较器和脉宽调制器。 增益模块被耦合以放大LED电流的表示以产生放大的电流感测信号。 可变电压参考源被耦合以基于背光设置产生参考电压以产生背光设置的表示。 比较器被耦合以将参考电压与放大的电流检测信号进行比较以产生比较信号。 脉冲宽度调制器被耦合以产生基于比较信号的亮度控制信号的脉冲宽度调制（PWM）信号，其中亮度控制信号被提供给向片外可调电源提供电源的片外可变电源电压源， 芯片LED。
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公开(公告)号：US07321261B2
公开(公告)日：2008-01-22
申请号：US11402189
申请日：2006-04-11
Applicant: Matthew D. Felder
Inventor： Matthew D. Felder
IPC: H03F1/02
CPC classification number: H03F3/38 , H03F1/26 , H03F3/45183 , H03F3/45744 , H03F3/45968 , H03F2200/372 , H03F2200/375 , H03F2203/45588 , H03F2203/45616 , H03F2203/45681 , H03F2203/45726 , H03K5/2481 , H03K5/249
Abstract: An amplifying circuit includes an input chopping circuit, an amplifier, and an output chopping circuit. The input chopping circuit is operably coupled to chop an input signal at a chopping rate to produce a chopped input signal. The amplifier has a first input transistor section, a second input transistor section, and a transistor load section. The first and second input transistor sections are operably coupled to receive the chopped input signal, wherein the first input transistor section amplifies the chopped input signal when the chopped input signal is in first signal level range, the second input transistor section amplifies the chopped input signal when the chopped input signal is in a second signal level range, and the first and second input transistor sections amplify the chopped input signal when the chopped input signal is in a third signal level range, wherein the transistor load section is coupled to the first and second input transistors sections to produce an amplified chopped signal. The output chopping circuit is operably coupled to chop the amplified chopped signal at the chopping rate to produce an amplified output signal.
Abstract translation: 放大电路包括输入斩波电路，放大器和输出斩波电路。 输入斩波电路可操作地耦合以以斩波速率斩波输入信号以产生斩波输入信号。 放大器具有第一输入晶体管部分，第二输入晶体管部分和晶体管负载部分。 第一和第二输入晶体管部分可操作地耦合以接收斩波输入信号，其中当斩波输入信号处于第一信号电平范围时，第一输入晶体管部分放大斩波输入信号，第二输入晶体管部分放大斩波输入信号 当所述斩波输入信号处于第二信号电平范围时，并且当所述斩波输入信号处于第三信号电平范围时，所述第一和第二输入晶体管部放大所述斩波输入信号，其中所述晶体管负载部分耦合到所述第一信号电平范围， 第二输入晶体管部分以产生放大的切碎信号。 输出斩波电路可操作地耦合以以斩波速率斩波放大的斩波信号以产生放大的输出信号。
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公开(公告)号：US07301492B2
公开(公告)日：2007-11-27
申请号：US11498204
申请日：2006-08-01
Applicant: Matthew D. Felder , Michael R. May
Inventor： Matthew D. Felder , Michael R. May
IPC: H03M1/12
Abstract: A controlled sampling module samples an input signal from an input device and a reference signal. The controlled sampling module includes a plurality of sample capacitors, a switching network, and a switch control module for controlling the switching network. The switching network couples a first capacitor of the plurality of capacitors to the reference signal during a first phase, and to the input signal during a second phase, such that a charge on the first capacitor remaining at an end of the first phase is cancelled during the second phase.
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