| 摘要 |
The invention relates to an apparatus, to an accessory, to methods and computer program products for them, and to a system comprising the apparatus and the accessory. The apparatus comprises at least one processor, memory including computer program code. The accessory comprises an interface with at least one power pin and a signaling pin;and resisting means configured to be coupled to a battery identification resistor of a battery via the signalling pin. The apparatus further comprises an interface with at least one power pin and a battery identification pin, and detection means configured to detect a resistance associated with the battery identification pin and to determine, based on the detected resistance, whether an accessory is attached to the apparatus. |
