An electronic device may comprise audio processing circuitry and a universal serial bus (USB) connector having a first contact and a second contact. In a first mode of operation, the audio processing circuitry is configured to output one or more audio signals carrying music and/or voice via the first contact and the second contact. In a second mode of operation, the audio processing circuitry is configured to output a signal for delivering supply current via the first contact and the second contact. While the electronic device is in the first mode of operation, a gain and/or volume limit of the audio processing circuitry may be set to a first level, and while the electronic device is in the second mode of operation, the gain and/or volume limit of the audio processing circuitry may be set to a second level that is higher than the first level.

A method for audio signal processing, where an audio amplifier drives a load through a connector, using 1) an input audio signal, and 2) a signal from a return pin of the connector. Output headroom of the audio amplifier is automatically detected, while the amplifier is driving the load. A variable resistor circuit that is coupled to provide variable resistance between the return pin of the connector and a ground plane, is automatically adjusted, in response to the detected output headroom of the amplifier. Other embodiments are also described and claimed.

An electronic device including a housing, at least one first sound output unit, a connecting module and a second sound output unit is provided. The first sound output unit is located inside or outside the housing. The connecting module is disposed on the housing. The connecting module includes a base and a sensing component. The base has a slot. The sensing component is disposed on the base as corresponding to the slot. The second sound output unit at least includes a plug. The plug is detachably assembled to the slot and is adapted to rotate relative to the base along an axis line, so as to determine whether the plug is sensed by the sensing component to make the electronic device switch between a first sound output mode and a second sound output mode.

Interfaces that can supply power and/or data, for example audio or video data, are described that can be joined to form a rotatable coupling, along with electronic devices that incorporate such couplings. Such devices can be joined by such couplings to provide portable and easily customizable systems, where individual system components can be rotated relative to each other and can be easily interchanged with alternative components by a user at their discretion. Such systems can be installed in or on automobiles, homes, offices, wearable items, and chairs.

Systems, methods, and devices are provided for determining an exertion recommendation for an anticipated exercise session. One such system includes a wearable device comprising a biosensor that monitors biometrics (e.g. heart rate); a motion sensor that monitors activity; a processor operatively coupled to the biosensor, the processor configured to process electronic signals periodically generated by the biosensor and the motion sensor; and a non-transitory computer-readable medium operatively coupled to the processor and storing instructions that, when executed, cause the processor to execute specific functions. In particular, the instructions are executed to cause the processor to generate biometric data from the biometrics (e.g. heart rate information in particular). Further, the instructions are executed to generate an exertion recommendation based on an exertion model created from and representing a relationship between prior exertion measures and prior response profile measures.

Systems, methods, and devices are provided for determining exertion as a measure of accumulated exercise intensity. One such system includes a wearable device comprising a biosensor that periodically measures biometrics (e.g. heart rate); a processor operatively coupled to the biosensor, the processor configured to process electronic signals periodically generated by the biosensor; and a non-transitory computer-readable medium operatively coupled to the processor and storing instructions that, when executed, cause the processor to execute specific functions. In particular, the instructions are executed to cause the processor to generate biometric data from the biometrics, to generate a plurality of exercise intensity values based on the biometric data (e.g. a plurality of heart rate values), to aggregate the plurality of exercise intensity values over a particular measuring period, to weight the individual exercise intensity values, and to generate one or more of an exertion value, an exertion index, and an exertion load based on the aggregation.

An electronic device includes a battery, a charging integrated circuit (IC) configured to control a charging state of the battery, a connector pin for receiving power from an external device, the connector pin including a first connector pin for receiving a high potential voltage from the external device and a second connector pin for receiving a low potential voltage from the external device, a touch sensor, and a controller. The controller receives power from the external device through the connector pin based on the detection of the external device being connected to the connector pin, charges the battery using a high potential voltage, detects a user input through the touch sensor while the battery is charged, and stops the charging of the battery and outputs a current corresponding to state information of the electronic device through the first connector pin based on the detection of the given user input.

An earphone system (10) includes a first ear bud (12) having wireless communications circuitry, a second ear bud (14) having wireless communications circuitry and first electric cabling (16) having a first end provided with a first electrical connector element (18) releasably connectable with the first ear bud, a second end provided with a second electrical connector element (20) releasably connectable with the second ear bud and a third electrical connector element (22) disposed intermediate the first and second ends. The earphone system (10) has second electric cabling (24) having a first end provided with a fourth electrical connector element (26) releasably connectable with the third electrical connector element and a second end provided with a fifth electrical connector element (28) connectable an output connector element of an electronic device to receive an audio signal from the electronic device.

Various techniques for performing automated detection and control of audio-based conditions for headsets and like wearable audio devices are disclosed herein. In an example, an audio headset device includes at least one sensor to collect sensor data and processing circuitry to detect an applicable audio control condition, based on the sensor data, to cause control of the audio to be output from the headset device. Also in an example, a computing device includes an audio control processing component to receive and process sensor data collected from a headset audio device and identify a control action in a software application, to cause control of audio to be output to the headset. Further examples to enable simplified, dynamic audio controls for the operation of a headset device and a connected computing device are also disclosed.

A system, method and personal area network for communicating, utilizing a wireless earpiece. Sensor measurements of a user are performed utilizing sensors of the wireless earpieces. The sensor measurements are analyzed. A determination is made whether the sensor measurements exceed two or more thresholds. An alert is communicated to the user in response to the two or more thresholds being exceeded.