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US 10,476,187 B2Granted
Energy saving USB receptacle
AssigneeRaffel Systems, LLC
InventorsPaul Li, Douglas A. Dorn, Jason D. Rohloff, Justin R. Saul
Life of this patent
Estimating the term…
Abstract
Provided herein is technology relating to providing power over a universal serial bus (USB) connection and particularly, but not exclusively, to devices, methods, and systems related to a (USB) technology for reducing energy consumption by a USB receptacle.
Claims8
A universal serial bus (USB) charging system comprising:
- a) a charging circuit comprising a power source comprising an enable/disable pin;
- and
- b) a USB receptacle comprising USB terminals and a first shell side that is physically and/or electrically separated from a second shell side, wherein one of the shell sides is connected to a ground and the other shell side is electrically connected to an on/off logic circuit comprising a pull-up resistor, an inverter, or a transistor, and wherein the on/off logic circuit is electrically connected to the charging circuit comprising the power source and enable/disable pin;
- wherein the charging circuit provides approximately 0 V to the USB terminals when the USB receptacle is unmated with a USB plug;
- and wherein the charging circuit provides approximately 5 V DC to approximately 20 V DC to the USB terminals when a USB plug is mated with the USB receptacle and electrically connects the first shell side and the second shell side.
2 more elements
A method for charging a universal serial bus (USB) device, the method comprising:
- a) providing a USB device comprising a USB plug;
- b) providing a universal serial bus (USB) charging system comprising:
- i) a USB receptacle comprising USB terminals and a first shell side physically and/or electrically separated from a second shell side;
- ii) a charging circuit;
- and
- iii) a power supply;
- wherein the charging circuit provides approximately 0 V to the USB terminals when the USB receptacle is unmated with the USB plug;
- and
- c) mating the USB plug to the USB receptacle;
- wherein when the USB plug is mated to the USB receptacle, the charging circuit provides approximately 5 V DC to approximately 20 V DC to the USB terminals.
7 more elements
Dependencies are inferred from the claim text.