公开(公告)号：US20110304491A1

公开(公告)日：2011-12-15

申请号：US12814533

申请日：2010-06-14

Applicant: Yeong-Shin Jang ,  Sang-Gug Lee ,  Seung-Tak Ryu

Inventor： Yeong-Shin Jang ,  Sang-Gug Lee ,  Seung-Tak Ryu

IPC: H03M3/00

CPC classification number: H03M3/42 ,  H03M3/452

Abstract: A digital feedforward sigma-delta modulator in an analog-to-digital converter and its modulation method are disclosed. The modulator changes a feedforward path from an analog domain to a digital domain and processes it. The modulator integrates an analog input by using a plurality of integrators, weights them, quantizes them by using a plurality of quantizers in a digital domain to output digital signals, and then adds up the thusly outputted digital signals by using a digital adder. In case of a continuous time digital feedforward sigma-delta modulator (SDM), a digital signal outputted from the digital adder is weighted and then immediately inputted to the digital adder in the digital domain so as to be subtracted, allowing for digital feedforwarding. Because the feedforward signal is processed in the digital domain, the area occupied by an analog circuit and power consumption can be reduced. Also, because signals are added up in the digital domain, a digital output signal can be immediately used when an excess loop delay needs to be corrected. Thus, because there is no need to convert the digital output signal into an analog signal by using a DAC, the DAC can be omitted.

Abstract translation: 公开了一种模拟数字转换器中的数字前馈Σ-Δ调制器及其调制方法。 调制器改变从模拟域到数字域的前馈路径并处理它。 调制器通过使用多个积分器对模拟输入进行积分，对它们进行加权，通过使用数字域中的多个量化器量化它们以输出数字信号，然后通过使用数字加法器将所输出的数字信号相加。 在连续时间数字前馈Σ-Δ调制器（SDM）的情况下，从数字加法器输出的数字信号被加权，然后在数字域中立即输入到数字加法器，以便减去数字前馈。 由于前馈信号在数字域中被处理，所以可以减少由模拟电路占用的面积和功耗。 另外，由于信号在数字域中相加，所以当需要纠正多余的环路延迟时，可以立即使用数字输出信号。 因此，由于不需要通过使用DAC将数字输出信号转换为模拟信号，所以可以省略DAC。

公开(公告)号：US20110279407A1

公开(公告)日：2011-11-17

申请号：US13105301

申请日：2011-05-11

Applicant: Ji-Hun KIM ,  Young-Bok Kim ,  Joon-Ho Na ,  Yeong-Shin Jang ,  Sang-Gug Lee

Inventor： Ji-Hun KIM ,  Young-Bok Kim ,  Joon-Ho Na ,  Yeong-Shin Jang ,  Sang-Gug Lee

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G01R27/2605

Abstract: A circuit for processing a touch line signal of a touch screen includes a plurality of sensing read circuits and a switch unit. The plurality of sensing read circuits include sensing read-out units and integrators, respectively. The sensing read-out units are configured to precharge a first sensor capacitor and a second sensor capacitor formed on a touch screen panel with a ground voltage and a supply voltage, allow charges charged in the first sensor capacitor and the second sensor capacitor to be shared, and read-out a charge sharing result obtained by allowing the charges of the first sensor capacitor and the second sensor capacitor to be shared. The integrators are configured to integrate output voltages of the sensing read-out units. The switch unit is configured to sequentially connect output terminals of the plurality of sensing read circuits to an input terminal of an analog-to-digital converter.

Abstract translation: 用于处理触摸屏的触摸线信号的电路包括多个感测读取电路和开关单元。 多个感测读取电路分别包括感测读出单元和积分器。 感测读出单元被配置为对接地电压和电源电压在触摸屏面板上形成的第一传感器电容器和第二传感器电容器进行预充电，允许在第一传感器电容器和第二传感器电容器中充电的电荷被共享 并且读出通过允许共享第一传感器电容器和第二传感器电容器的电荷而获得的电荷共享结果。 集成器被配置为集成感测读出单元的输出电压。 开关单元被配置为将多个感测读取电路的输出端子顺序地连接到模数转换器的输入端子。

公开(公告)号：US08120518B2

公开(公告)日：2012-02-21

申请号：US12814533

申请日：2010-06-14

Applicant: Yeong-Shin Jang ,  Sang-Gug Lee ,  Seung-Tak Ryu

Inventor： Yeong-Shin Jang ,  Sang-Gug Lee ,  Seung-Tak Ryu

IPC: H03M3/00

CPC classification number: H03M3/42 ,  H03M3/452

Abstract: A digital feedforward sigma-delta modulator in an analog-to-digital converter and its modulation method are disclosed. The modulator changes a feedforward path from an analog domain to a digital domain and processes it. The modulator integrates an analog input by using a plurality of integrators, weights them, quantizes them by using a plurality of quantizers in a digital domain to output digital signals, and then adds up the thusly outputted digital signals by using a digital adder. In case of a continuous time digital feedforward sigma-delta modulator (SDM), a digital signal outputted from the digital adder is weighted and then immediately inputted to the digital adder in the digital domain so as to be subtracted, allowing for digital feedforwarding. Because the feedforward signal is processed in the digital domain, the area occupied by an analog circuit and power consumption can be reduced. Also, because signals are added up in the digital domain, a digital output signal can be immediately used when an excess loop delay needs to be corrected. Thus, because there is no need to convert the digital output signal into an analog signal by using a DAC, the DAC can be omitted.

Abstract translation: 公开了一种模拟数字转换器中的数字前馈Σ-Δ调制器及其调制方法。 调制器改变从模拟域到数字域的前馈路径并处理它。 调制器通过使用多个积分器对模拟输入进行积分，对它们进行加权，通过使用数字域中的多个量化器量化它们以输出数字信号，然后通过使用数字加法器将所输出的数字信号相加。 在连续时间数字前馈Σ-Δ调制器（SDM）的情况下，从数字加法器输出的数字信号被加权，然后在数字域中立即输入到数字加法器，以便减去数字前馈。 由于前馈信号在数字域中被处理，所以可以减少由模拟电路占用的面积和功耗。 另外，由于信号在数字域中相加，所以当需要纠正多余的环路延迟时，可以立即使用数字输出信号。 因此，由于不需要通过使用DAC将数字输出信号转换为模拟信号，所以可以省略DAC。