USB power supply
First Claim
1. A universal serial bus (USB) power supply including:
- a first unit, anda second unit releasably connectable with said first unit,wherein said first unit is releasably connectable to a direct current (DC) power source for receiving a DC power there-from, said first unit including a first USB connection part electrically connectable with said DC power source,wherein said second unit includes a second USB connection part releasably connectable with said first USB connection part to establish electrical connection and data communication there-between and a connector electrically connected with said second USB connection part,wherein said power supply is operable in a detached mode in which said first unit is out of connection with said second unit and in an attached mode in which said first unit is releasably connected with said second unit,wherein, when in said attached mode, said power supply is adapted to automatically change the voltage of a DC power output from said connector,wherein said power supply includes a current sensor which, when said power supply is in said attached mode, is adapted to detect electricity current output from said first USB connection part,wherein said first unit includes a converter adapted to change the voltage of a DC power received from said DC power source for output, andwherein, when said power supply is in said attached mode, and during detection by said current sensor of said electricity current output from said first USB connection part, said converter is adapted to first output a DC power at a first pre-determined voltage and to increase the voltage of DC power outputted thereby from said first pre-determined voltage until said current sensor senses a step change of the electric current output from said first USB connection part, whereupon said converter is adapted to continue to output a DC power at the voltage at which said step change of the electric current output from said first USB connection part is detected.
1 Assignment
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Accused Products
Abstract
A universal serial bus (USB) power supply is disclosed as including a main body (12) and a cable (24) releasably connectable with each other, the main body (12) being releasably connectable to a direct current (DC) power source and having a USB receptacle (20) electrically connectable with the DC power source. The cable (24) includes a USB plug (26) releasably connectable with the USB receptacle (20) to establish electrical connection and data communication there-between and a connector (30) electrically connected with the USB plug (26). The power supply is operable in a detached mode in which the main body (12) is out of connection with the cable (24) and in an attached mode in which the main body (12) is releasably connected with the cable (24). The power supply is adapted, when in the attached mode, to automatically change the voltage of a DC power output from the connector (30).
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Citations
15 Claims
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1. A universal serial bus (USB) power supply including:
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a first unit, and a second unit releasably connectable with said first unit, wherein said first unit is releasably connectable to a direct current (DC) power source for receiving a DC power there-from, said first unit including a first USB connection part electrically connectable with said DC power source, wherein said second unit includes a second USB connection part releasably connectable with said first USB connection part to establish electrical connection and data communication there-between and a connector electrically connected with said second USB connection part, wherein said power supply is operable in a detached mode in which said first unit is out of connection with said second unit and in an attached mode in which said first unit is releasably connected with said second unit, wherein, when in said attached mode, said power supply is adapted to automatically change the voltage of a DC power output from said connector, wherein said power supply includes a current sensor which, when said power supply is in said attached mode, is adapted to detect electricity current output from said first USB connection part, wherein said first unit includes a converter adapted to change the voltage of a DC power received from said DC power source for output, and wherein, when said power supply is in said attached mode, and during detection by said current sensor of said electricity current output from said first USB connection part, said converter is adapted to first output a DC power at a first pre-determined voltage and to increase the voltage of DC power outputted thereby from said first pre-determined voltage until said current sensor senses a step change of the electric current output from said first USB connection part, whereupon said converter is adapted to continue to output a DC power at the voltage at which said step change of the electric current output from said first USB connection part is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification