Energy saving USB receptacle
First Claim
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1. 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.
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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.
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Citations
8 Claims
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1. A universal serial bus (USB) charging system comprising:
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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. - View Dependent Claims (2, 3, 4)
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5. A method for charging a universal serial bus (USB) device, the method comprising:
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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. - View Dependent Claims (6, 7, 8)
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Specification