公开(公告)号：US20090109191A1

公开(公告)日：2009-04-30

申请号：US11927289

申请日：2007-10-29

Applicant: Matthew D. Felder ,  Marcus W. May

Inventor： Matthew D. Felder ,  Marcus W. May

IPC: G06F3/045 ,  G06F3/038

CPC classification number: G06F3/045 ,  G06F3/038

Abstract: A touch screen driver that can be used with a resistive touch screen includes an input/output module that supplies at least one input signal to at least one of a plurality of input/output ports of the touch screen and that generates at least one output signal, in response to the at least one input signal, and in accordance with at least one control signal. A controller module generates the at least one control signal and that generates a position signal representing a resolved position in accordance with a plurality of contemporaneous touches of the resistive touch screen.

Abstract translation: 可以与电阻式触摸屏一起使用的触摸屏驱动器包括输入/​​输出模块，其将至少一个输入信号提供给触摸屏的多个输入/输出端口中的至少一个并且产生至少一个输出信号 响应于至少一个输入信号，并且根据至少一个控制信号。 控制器模块产生至少一个控制信号，并且根据电阻式触摸屏的多个同时触摸产生表示分辨位置的位置信号。

公开(公告)号：US20080265991A1

公开(公告)日：2008-10-30

申请号：US11796979

申请日：2007-04-30

Applicant: Matthew D. Felder

Inventor： Matthew D. Felder

IPC: H03F3/45 ,  H03G3/00

CPC classification number: H03G3/001 ,  H03F1/34

Abstract: A gain control module includes an amplifier, a least significant bit (LSB) gain stage, and a most significant bit (MSB) gain stage. The amplifier includes a first input, a second input, and an output. The LSB gain stage produces a LSB gain based on an LSB portion of a gain control signal, wherein the LSB gain stage receives an input signal. The MSB gain stage produces an MSB gain based on an MSB portion of the gain control signal, wherein the MSB gain stage is coupled to the LSB gain stage, the first input of the amplifier, and the output of the amplifier, wherein the gain control module amplifies the input signal in accordance with the gain control signal.

Abstract translation: 增益控制模块包括放大器，最低有效位（LSB）增益级和最高有效位（MSB）增益级。 放大器包括第一输入，第二输入和输出。 LSB增益级基于增益控制信号的LSB部分产生LSB增益，其中LSB增益级接收输入信号。 MSB增益级基于增益控制信号的MSB部分产生MSB增益，其中MSB增益级耦合到LSB增益级，放大器的第一输入和放大器的输出，其中增益控制 模块根据增益控制信号放大输入信号。

公开(公告)号：US07402981B2

公开(公告)日：2008-07-22

申请号：US10675116

申请日：2003-09-30

Applicant: Marcus W. May ,  Matthew D. Felder

Inventor： Marcus W. May ,  Matthew D. Felder

IPC: H01M10/46

CPC classification number: H02J7/0065 ,  H02J7/0068

Abstract: A battery converter, which is used to convert battery voltage to an output voltage to power an integrated circuit in a battery-operated mode, is placed into a battery-charge mode to charge the battery when external power source is present to power the integrated circuit and the battery needs charging.

Abstract translation: 将用于将电池电压转换为对电池供电模式的集成电路供电的电池转换器被置于电池充电模式，以在外部电源存在时向集成电路供电 电池需要充电。

公开(公告)号：US20080100488A1

公开(公告)日：2008-05-01

申请号：US11796968

申请日：2007-04-30

Applicant: Matthew D. Felder ,  Charles Eric Seaberg

Inventor： Matthew D. Felder ,  Charles Eric Seaberg

IPC: H03M1/66

CPC classification number: H04R5/04 ,  H04R2430/01 ,  H04R2499/11

Abstract: An audio output circuit includes a DAC module, a line out circuit, and a headphone amplifier circuit. The digital to analog conversion (DAC) module is coupled to convert an audio component of digitized multimedia data into an analog audio signal. The line out circuit is coupled to amplify the analog audio signal based on a line out volume setting. The headphone amplifier is coupled to amplify the analog audio signal based on a volume setting to produce an amplified analog audio signal.

Abstract translation: 音频输出电路包括DAC模块，线路输出电路和耳机放大器电路。 数模转换（DAC）模块被耦合以将数字化多媒体数据的音频分量转换为模拟音频信号。 线路输出电路被耦合以基于线路输出音量设置来放大模拟音频信号。 耳机放大器被耦合以基于音量设置放大模拟音频信号以产生放大的模拟音频信号。

公开(公告)号：US07254244B2

公开(公告)日：2007-08-07

申请号：US10628827

申请日：2003-07-28

Applicant: Matthew Brady Henson ,  Matthew D. Felder

Inventor： Matthew Brady Henson ,  Matthew D. Felder

IPC: H03F21/00 ,  H03F1/14 ,  H03F1/26 ,  H04B15/00 ,  H03G3/10

CPC classification number: H03F1/305 ,  H03F2200/331 ,  H03G3/348

Abstract: An audio amplifier generates an output to a load, in which a digital-to-analog converter drives the amplifier during powering up and powering down the amplifier. The digital-to-analog converter controls the amplifier to ramp the voltage at the output at a predetermined rate to reduce rapid voltage changes from being sent to the load during the powering up or powering down sequence.

Abstract translation: 音频放大器产生一个负载的输出，其中数模转换器在上电和上电放大器期间驱动放大器。 数模转换器控制放大器以预定速率斜坡输出输出端的电压，以减少快速电压变化，从而在上电或掉电过程中发送到负载。

公开(公告)号：US06967468B2

公开(公告)日：2005-11-22

申请号：US10675101

申请日：2003-09-30

Applicant: Matthew D. Felder

Inventor： Matthew D. Felder

IPC: H02J7/00

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.

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。

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

IPC: H01M10/44 ,  H01M10/46

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。

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。

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。