Low-power touch button sensing system

• Main Authors: LIEPOLD CARL FERDINAND, KLEIN HANS, WRIGHT DAVID G, WOOLLEY ADRIAN, VAN ANTWERPEN HANS
• Format: Patent
• Language: Chinese; English
• Published: 18.05.2021
• Subjects: BASIC ELECTRONIC CIRCUITRY; CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PULSE TECHNIQUE; TESTING

Disclosed is a low-power touch button sensing system. A capacitance sensing circuit receives an application of a power supply. The capacitance sensing circuit controls a switch circuit to connect the power supply to a processing device responsive to the application of the power supply. The capacitance sensing circuit receives, via a control interface and from the processing device, control information to configure the capacitance sensing circuit. The capacitance sensing circuit disconnects the power supply from the processing device subsequent to receiving the control information. 本公开涉及低功率触摸按钮感测系统。电容感测电路接收施加的电源。电容感测电路响应于施加电源来控制开关电路以将电源连接到处理设备。电容感测电路经由控制接口并从处理设备接收控制信息以配置电容感测电路。电容感测电路在接收到控制信息之后将电源从处理设备断开。