Terminating resistor circuit of USB port and operation method thereof
US10860517B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2019 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Oct 23, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/018557
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A terminating resistor circuit of a USB port and an operation method thereof are provided. The terminating resistor circuit includes a terminating resistor, a terminating switch, and an energy storage control circuit. The terminating resistor and the terminating switch are connected in series between a configuration channel pin of the USB port and a first reference voltage, and the energy storage control circuit is coupled to a control end of the terminating switch. During a charging period in a configuration detection period, the energy storage control circuit stores charge from the configuration channel pin to obtain a stored electrical energy, and during a discharging period in the configuration detection period, the energy storage control circuit turns on the terminating switch by using the stored electrical energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.