The invention discloses a wake-up circuit, which is applied to wake-up of a display device by a host, and comprises a wake-up signal transmitting circuit arranged in the host and a differential signal line connected between the host and the display device, the wake-up signal transmitting circuit comprises a first switch unit, a second switch unit, a first resistor, a second resistor and a wake-up signal step control sub-circuit; the control end of the first switch unit is electrically connected with a first main control chip arranged in a host, the input end of the first switch unit is connected with the ground, and the output end of the first switch unit is electrically connected with the control end of the second switch unit through a wake-up signal step control sub-circuit; the input end of the second switch unit is electrically connected with the first power supply end, the output end of the second switch unit is electrically connected with the positive sub-line of the differential signal line through a second resistor, and a first resistor is arranged between the input end of the second switch unit and the control end. According to the technical scheme, wake-up signal harmonic waves are reduced, and the reliability of the wake-up circuit is improved.
本发明公开了一种唤醒电路,应用于主机对显示设备的唤醒中,唤醒电路包括设置于主机中的唤醒信号发射电路以及连接在主机和显示设备之间的差分信号线;唤醒信号发射电路包括第一开关单元、第二开关单元、第一电阻、第二电阻和唤醒信号阶跃控制子电路;第一开关单元的控制端与设置于主机中的第一主控芯片电连接,第一开关单元的输入端接地连接,第一开关单元的输出端通过唤醒信号阶跃控制子电路与第二开关单元的控制端电连接;第二开关单元的输入端与第一电源端电连接,第二开关单元的输出端通过第二电阻与差分信号线的正极子线电连接,且第二开关单元的输入端与控制端之间设置有第一电阻。以上技术方案,以减少唤醒信号谐波,提高唤醒电路可靠性。
Wake-up circuit
一种唤醒电路
2024-01-05
Patent
Electronic Resource
Chinese