公开(公告)号：US20150130755A1

公开(公告)日：2015-05-14

申请号：US14531408

申请日：2014-11-03

Applicant: Texas Instruments Incorporated

Inventor： Karan Singh Jain ,  Harish Venkataraman ,  Susan Curtis

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: An integrated analog data receiver for a capacitive touch screen. An analog data receiver circuit for a touch screen device is provided including a sigma delta analog to digital converter configured for direct connection to an analog output of a touch screen device, and further including an integrator circuit having an input coupled for receiving the analog output signal and outputting an integrated output voltage; a comparator coupled to the integrated output voltage and a first bias voltage and outputting a comparison voltage; a clocked sampling latch coupled to the comparison voltage and to a clock signal and outputting quantized data bits corresponding to samples of the comparison voltage; and a digital filter and decimator coupled to the clocked sampling latch and outputting serial data bits which form a digital representation corresponding to the output of the touch screen device. Additional circuits and systems are disclosed.

Abstract translation: 一种用于电容式触摸屏的集成模拟数据接收器。 提供了一种用于触摸屏设备的模拟数据接收器电路，其包括被配置为直接连接到触摸屏设备的模拟输出的Σ-Δ模数转换器，并且还包括积分器电路，其具有被耦合用于接收模拟输出信号 并输出积分输出电压; 耦合到所述集成输出电压和第一偏置电压并输出比较电压的比较器; 耦合到比较电压和时钟信号的时钟采样锁存器，并输出与比较电压的采样相对应的量化数据位; 以及耦合到时钟采样锁存器的数字滤波器和抽取器，并且输出形成对应于触摸屏设备的输出的数字表示的串行数据位。 公开了附加电路和系统。

公开(公告)号：US20150130434A1

公开(公告)日：2015-05-14

申请号：US14446563

申请日：2014-07-30

Applicant: Texas Instruments Incorporated

Inventor： Karan Singh Jain ,  Timothy Bryan Merkin ,  Susan Curtis

IPC: G05F1/575

CPC classification number: G05F1/575 ,  G05F1/10 ,  G05F1/56

Abstract: A circuit and method for providing a current limiting feature in a low dropout (“LDO”) linear voltage regulator. A pass element generates an output voltage that is less than the input voltage. The pass element is normally enabled by an error amplifier that compares a feedback signal from the output of the pass element with a reference signal. However, the pass element may be enabled by a current limiting circuit that bypasses the error amplifier to limit the current generated at the output of the pass element.

Abstract translation: 一种用于在低压差（“LDO”）线性稳压器中提供限流特性的电路和方法。 传递元件产生小于输入电压的输出电压。 通过元件通常由误差放大器使能，该误差放大器将来自通过元件的输出的反馈信号与参考信号进行比较。 然而，通过元件可以通过旁路误差放大器的限流电路使能，以限制在通过元件的输出处产生的电流。

公开(公告)号：US09535439B2

公开(公告)日：2017-01-03

申请号：US14446563

申请日：2014-07-30

Applicant: Texas Instruments Incorporated

Inventor： Karan Singh Jain ,  Timothy Bryan Merkin ,  Susan Curtis

IPC: G05F1/575 ,  G05F1/10 ,  G05F1/56

CPC classification number: G05F1/575 ,  G05F1/10 ,  G05F1/56

Abstract: A circuit and method for providing a current limiting feature in a low dropout (“LDO”) linear voltage regulator. A pass element generates an output voltage that is less than the input voltage. The pass element is normally enabled by an error amplifier that compares a feedback signal from the output of the pass element with a reference signal. However, the pass element may be enabled by a current limiting circuit that bypasses the error amplifier to limit the current generated at the output of the pass element.

Abstract translation: 一种用于在低压差（“LDO”）线性稳压器中提供限流特性的电路和方法。 传递元件产生小于输入电压的输出电压。 通过元件通常由误差放大器使能，该误差放大器将来自通过元件的输出的反馈信号与参考信号进行比较。 然而，通过元件可以通过旁路误差放大器的限流电路使能，以限制在通过元件的输出处产生的电流。

公开(公告)号：US09256335B2

公开(公告)日：2016-02-09

申请号：US14531408

申请日：2014-11-03

Applicant: Texas Instruments Incorporated

Inventor： Karan Singh Jain ,  Harish Venkataraman ,  Susan Curtis

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: An integrated analog data receiver for a capacitive touch screen. An analog data receiver circuit for a touch screen device is provided including a sigma delta analog to digital converter configured for direct connection to an analog output of a touch screen device, and further including an integrator circuit having an input coupled for receiving the analog output signal and outputting an integrated output voltage; a comparator coupled to the integrated output voltage and a first bias voltage and outputting a comparison voltage; a clocked sampling latch coupled to the comparison voltage and to a clock signal and outputting quantized data bits corresponding to samples of the comparison voltage; and a digital filter and decimator coupled to the clocked sampling latch and outputting serial data bits which form a digital representation corresponding to the output of the touch screen device. Additional circuits and systems are disclosed.

Abstract translation: 一种用于电容式触摸屏的集成模拟数据接收器。 提供了一种用于触摸屏设备的模拟数据接收器电路，其包括被配置为直接连接到触摸屏设备的模拟输出的Σ-Δ模数转换器，并且还包括积分器电路，其具有被耦合用于接收模拟输出信号 并输出积分输出电压; 耦合到所述集成输出电压和第一偏置电压并输出比较电压的比较器; 耦合到比较电压和时钟信号的时钟采样锁存器，并输出与比较电压的采样相对应的量化数据位; 以及耦合到时钟采样锁存器的数字滤波器和抽取器，并且输出形成对应于触摸屏设备的输出的数字表示的串行数据位。 公开了附加电路和系统。

公开(公告)号：US20160035287A1

公开(公告)日：2016-02-04

申请号：US14812463

申请日：2015-07-29

Applicant: Texas Instruments Incorporated

Inventor： Timothy Bryan Merkin ,  Harish Venkataraman ,  Susan Curtis

IPC: G09G3/34 ,  G09G3/36

CPC classification number: G09G3/3611 ,  G09G2300/0852 ,  G09G2300/0876

Abstract: A display panel includes multiple pixel elements for composing an image and a control circuit for accessing each pixel element. The control circuit includes a data line for conducting a luminance signal and a selection line for conducting a selection signal. Each pixel element includes a switch, a display cell, and a compensatory capacitor. The switch is connected to the data line and the selection line, such that the switch can selectively deliver the luminance signal to the display cell. The display cell is configured to adjust its light transmittance in response to the received luminance signal. Being connected to the switch and the display cell, the compensatory capacitor is configured to receive a compensation signal corresponding to a transition of the selection signal and for correcting a parasitic effect at the display cell.

Abstract translation: 显示面板包括用于构成图像的多个像素元件和用于访问每个像素元件的控制电路。 控制电路包括用于进行亮度信号的数据线和用于进行选择信号的选择线。 每个像素元件包括开关，显示单元和补偿电容器。 开关连接到数据线和选择线，使得开关可以选择性地将亮度信号传递到显示单元。 显示单元被配置为响应于接收的亮度信号来调节其透光率。 连接到开关和显示单元，补偿电容器被配置为接收与选择信号的转变相对应的补偿信号，并用于校正显示单元的寄生效应。