A computer-implemented method for detecting soft short circuits at a charging interface of an electronic device is provided. The method includes obtaining an initial voltage measurement of a voltage reference that is electrically coupled to the charging interface of the electronic device. The method includes obtaining a plurality of additional voltage measurements of the voltage reference. The method includes detecting a soft short circuit at the charging interface based, at least in part, on the initial voltage measurement and a voltage measurement of the plurality of additional voltage measurements that is most recent in time. The method further includes causing the electronic device to perform one or more control actions in response to detecting the soft short circuit at the charging interface.

A computer-implemented method for detecting soft short circuits at a charging interface of an electronic device is provided. The method includes obtaining an initial voltage measurement of a voltage reference that is electrically coupled to the charging interface of the electronic device. The method includes obtaining a plurality of additional voltage measurements of the voltage reference. The method includes detecting a soft short circuit at the charging interface based, at least in part, on the initial voltage measurement and a voltage measurement of the plurality of additional voltage measurements that is most recent in time. The method further includes causing the electronic device to perform one or more control actions in response to detecting the soft short circuit at the charging interface.

A mobile device includes; a power line communication ( ) module that communicates data with an external device via a power line, receives a first preamble signal from the external device during a first preamble interval, receives a voltage signal as the data during a data reception interval following the first preamble interval, and demodulates the voltage signal to provide a demodulated voltage signal, a frequency/duty detector that detects a frequency and a duty of the first preamble signal, and a control circuit that performs signal a data determination operation on a demodulated voltage signal during a data period and using the first detected frequency and the first detected duty.

A data line and a charging device are provided. The data line includes a Type-A interface, a first interface, a wire, and a circuit identification module. The Type-A interface is correspondingly connected to a VBUS pin, a D+ pin, a D pin, and a GND pin in the first interface. The circuit identification module includes a pull-up resistor, a switch circuit, a filter circuit, and a comparator circuit. The comparator circuit controls the first end and the second end or the third end of the switch circuit to be connected.

A system for intelligent initiation of an inductive charging process is provided. In accordance with an embodiment, the system comprises a receiver coil or receiver associated with a mobile device, and provided as a separable or after-market accessory for use with the mobile device. When the mobile device is placed in proximity to a base unit having one or more charger coils, the charger coil is used to inductively generate a current in the receiver coil or receiver associated with the mobile device, to charge or power the mobile device. The base unit and mobile device communicate with each other prior to and/or during charging or powering to determine a protocol to be used to charge or power the mobile device.

The charging system comprises: two chargers which deliver instantaneous electrical energy for charging an electrical device; an electrical chain which links the two chargers; three charging points that are electrically connected to the chargers via the electrical chain; a switching system which connects or does not connect a charging point to the first or to the second charger; a control system which controls the switching system.

A charging circuit and a charging cable. The charging circuit includes a first interface, a second interface, a detection control module, and a switch module. The first interface outputs a high-level signal through a first signal pin in a case of detecting that the first interface is plugged with a charger compatible with a fast charging protocol; and the detection control module controls the switch module to perform a preset operation in a case of detecting the high-level signal, so that the first signal pin and a second signal pin are connected, and ground and a bus are disconnected.

A system of a hearing device and a charging device that sends a message via electrical pulses from a bleeding circuit to the hearing device. The electrical pulses may communicate information about a battery state of charge or the presence of a fault in the charging of the hearing device. The charging device may, based on the hearing device message, perform at least one of changing a parameter of the electrical power, presenting a visual indication by a visual indicator on the charging device, or producing an acoustic signal.

A system of a hearing device and a charging device that sends a message via electrical pulses from a bleeding circuit to the hearing device. The electrical pulses may communicate information about a battery state of charge or the presence of a fault in the charging of the hearing device. The charging device may, based on the hearing device message, perform at least one of changing a parameter of the electrical power, presenting a visual indication by a visual indicator on the charging device, or producing an acoustic signal.

A method for mutual authentication between a host controller and a battery subsystem of an electronic device includes, at a battery controller, generating a battery-side authentication challenge, and transmitting the battery-side authentication challenge to the host controller. A host-side authentication challenge is received from the host controller. The host-side authentication challenge is signed with a private encryption key of the battery controller to generate a battery-side message digest. The battery-side message digest and a public encryption key of the battery controller are transmitted to the host controller as a battery-side signature pair. A host-side signature pair is received from the host controller. Based at least in part on the host-side signature pair, a battery-side validation result is output that specifies a battery-side validity state for the host controller.