INPUT DEVICE RECEIVER WITH DELTA-SIGMA MODULATOR

• Main Authors: BOHANNON ERIC SCOTT, BELL JR MARSHALL J, YANG YIHONG
• Format: Patent
• Language: Chinese; English
• Published: 05.02.2019
• Subjects: BASIC ELECTRONIC CIRCUITRY; CALCULATING; CODE CONVERSION IN GENERAL; CODING; COMPUTING; COUNTING; DECODING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; PHYSICS

A processing system, and associated input device and method are disclosed suitable for reducing a receiver size within the input device. The processing system comprises a delta-sigma modulator comprising one or more input nodes configured to receive a signal based on a sensor signal received from at least a first sensor electrode of the plurality of sensor electrodes. The delta-sigma modulator further comprises an integrator coupled with the one or more input nodes and configured to produce an integration signal, a quantizer coupled with an output of the integrator and configured to quantize the integration signal, and a feedback digital-to-analog converter (DAC) controlled based by the quantizer. The processing system further comprises a digital filter coupled with an output of the delta-sigma modulator and configured to mitigate a quantization noise of the quantizer. 公开了适合于减小输入设备内的接收器尺寸的处理系统以及相关联的输入设备和方法。处理系统包括Δ-Σ调制器，所述Δ-Σ调制器包括个或多个输入节点，所述输入节点被配置成基于从多个传感器电极中的至少第传感器电极接收的传感器信号来接收信号。Δ-Σ调制器还包括：积分器，其与个或多个输入节点耦合并配