| 摘要 |
The invention relates to a method for detecting a charger on a serial data bus in a first device (8). The method comprises connecting (100) said first device to a second device via a serial data bus interface, measuring (104) logic voltage levels of first (D+) and second (D−) data lines of said serial data bus, and determining whether a battery (14) of said first device (8) may be charged from a power supply line (VBUS) of said serial data bus based on said measured logic voltage levels.
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