Please download the dossier by clicking on the dossier button x
×

Voltage switching device and method

  • US 10,063,225 B1
  • Filed: 06/11/2017
  • Issued: 08/28/2018
  • Est. Priority Date: 06/11/2017
  • Status: Active Grant
First Claim
Patent Images

1. A voltage switching device, comprising:

  • a receiver;

    a voltage controlled switch connected between an input data terminal and the receiver;

    a first voltage generator circuit configured to provide a first voltage;

    a voltage detector configured to output a first logic signal while detecting the first voltage higher than a predetermined voltage;

    a first switch circuit connected between the first voltage generator circuit and the voltage controlled switch, the first switch circuit being turned on according to the first logic signal, so that the voltage controlled switch is turned on by the first voltage, and data are transmitted from the input data terminal to the receiver;

    a second voltage generator circuit configured to provide a second voltage after the voltage detector outputs a second logic signal while detecting the first voltage dropped lower than the predetermined voltage; and

    a second switch circuit connected between the second voltage generator circuit and the voltage controlled switch, wherein the first switch circuit is turned off according to the second logic signal, and the second switch circuit is turned on according to the second logic signal, so that the voltage controlled switch is turned on by the second voltage, and the data are transmitted from the input data terminal to the receiver,wherein the first switch circuit comprises;

    a first semiconductor switch connected between the first voltage generator circuit and the voltage controlled switch; and

    a first inverter connected between the voltage detector and the first switch, wherein when the voltage detector outputs the first logic signal, the first inverter inverts the first logic signal into the second logic signal to turn on the first semiconductor switch, so that the first voltage generator circuit outputs the first voltage to turn on the voltage controlled switch through the first semiconductor switch.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×