Abstract: Provided are an adaptive earphone and a detection sensor. The adaptive earphone includes an earphone body, a controller, and a first detection sensor. The first detection sensor and the controller are disposed within the earphone body. The earphone body includes a first surface and a second surface which are disposed opposite to each other in a first direction. The first detection sensor is configured to detect an orientation of the first surface and an orientation of the second surface. The controller is electrically connected to the first detection sensor and is configured to control a channel output of the adaptive earphone according to the orientation of the first surface and the orientation of the second surface.

Abstract: Provided are smart glasses. The smart glasses include a lens and a light emission control circuit. The light emission control circuit includes a user state collection module, a processing module and a light emission module. An output terminal of the user state collection module is connected to an input terminal of the processing module. An output terminal of the processing module is connected to a control terminal of the light emission module. A light emission direction of the light emission module points to a side surface of the lens. The user state collection module is disposed so that the current state of a user can be monitored. The side surface of the lens is provided with the light emission module, and by controlling the light emission module to emit light, light emitted by the light emission module is refracted through the lens to change the color of the lens.

Abstract: A method and an apparatus for determining a turn-off negative voltage of a switching transistor are provided. The method includes: determining first and second turn-off negative voltage models; inputting acquired turn-off and turn-on gate resistances of the switching transistor, an acquired bus voltage, and an acquired minimum turn-on voltage of the switching transistor into the first model to obtain a turn-off negative voltage upper limit absolute value of the switching transistor; inputting the acquired turn-off and turn-on gate resistances of the switching transistor, the acquired bus voltage, and an acquired maximum bearable negative voltage absolute value of the switching transistor into the second model to obtain a turn-off negative voltage lower limit absolute value of the switching transistor; and determining a turn-off negative voltage interval of the switching transistor based on the turn-off negative voltage upper limit absolute value and the turn-off negative voltage lower limit absolute value.

Abstract: A method for sharing a file between different terminals includes displaying, by a first terminal when detecting a file sharing operation, a list of second terminals associated with the first terminal; sending, by the first terminal, a first control command to a second terminal when detecting an operation of selecting an identifier of the second terminal in the list of second terminals, so that the second terminal enables a WiFi point-to-point function according to the first control command, and sends a second control command to the first terminal; receiving, by the first terminal, the second control command, and enabling a WiFi point-to-point function according to the second control command; and establishing, by the first terminal, a WiFi communication link to the second terminal, and sharing a file between the first terminal and the second terminal by using the WiFi communication link.

Abstract: A method for sharing a file between different terminals includes displaying, by a first terminal when detecting a file sharing operation, a list of second terminals associated with the first terminal; sending, by the first terminal, a first control command to a second terminal when detecting an operation of selecting an identifier of the second terminal in the list of second terminals, so that the second terminal enables a WiFi point-to-point function according to the first control command, and sends a second control command to the first terminal; receiving, by the first terminal, the second control command, and enabling a WiFi point-to-point function according to the second control command; and establishing, by the first terminal, a WiFi communication link to the second terminal, and sharing a file between the first terminal and the second terminal by using the WiFi communication link.

Abstract: A notification method includes obtaining, according to period t1, coordinates a1 and a speed v1 of a device after a first geo-fence is set, setting a second geo-fence in response to coordinates a1 being outside the first geo-fence and v1 exceeding a threshold, where the initial radius of the second geo-fence is greater than that of the first geo-fence and a center point of the second geo-fence is the same as that of the first geo-fence, obtaining, according to t1, coordinates a2 and a speed v2 of the device after the second geo-fence is set, adjusting period t1 to a period t2 in response to the coordinates a2 being within the second geo-fence and outside the first geo-fence, obtaining, according to the period t2, coordinates a3 and speed v3 of the portable electronic device, and outputting a notification when the geographical coordinates a3 are located within the first geo-fence.

Abstract: A notification method includes obtaining, according to period t1, coordinates a1 and a speed v1 of a device after a first geo-fence is set, setting a second geo-fence in response to coordinates a1 being outside the first geo-fence and v1 exceeding a threshold, where the initial radius of the second geo-fence is greater than that of the first geo-fence and a center point of the second geo-fence is the same as that of the first geo-fence, obtaining, according to t1, coordinates a2 and a speed v2 of the device after the second geo-fence is set, adjusting period t1 to a period t2 in response to the coordinates a2 being within the second geo-fence and outside the first geo-fence, obtaining, according to the period t2, coordinates a3 and speed v3 of the portable electronic device, and outputting a notification when the geographical coordinates a3 are located within the first geo-fence.