Abstract: A drying device, a fixed seat assembly and a toilet. The drying device includes a housing, provided with an air inlet and an air outlet; a fan, positioned inside the housing and adjacent to the air inlet; a heater, located inside the housing and adjacent to the air outlet; and an air bucket, disposed at the air outlet. The air bucket is capable of reducing the risk of water or dirt entering the air outlet, thus being helpful in protecting the heater.

Abstract: Compounds of formula (I) and organic electroluminescent devices containing a cathode, an anode, and an organic layer, wherein the organic layer containing the compounds of formula (I) are disclosed.

Abstract: A power supply system includes multiple power converters. The output terminals of the power converters are coupled to each other. The power converter includes a rectifier unit, a first boost module, a start circuit, a second boost module, a first switch and a control unit. The control unit is electrically coupled to the rectifier unit, the first boost module and the first switch. After the second boost module receives the third voltage, a fourth voltage is delivered by the first switch from the second boost module to the first boost module. When the control unit receives the first voltage for a predetermined time, the control unit turns off the first switch and stops outputting the fourth voltage to the first boost module.

Abstract: The present disclosure provides a novel compound of formula (I) and organic electroluminescent devices using the same: wherein, X1 and A1 each independently represent a substituted or unsubstituted (C6-C30) aryl, a substituted or unsubstituted 5- to 30-membered heteroaryl; and n is an integer of 1 or 2, and when n is 1, X1 is the substituted or unsubstituted (C6-C30) aryl.

Abstract: A charging apparatus for recognizing an adaptor is applied to an alternating current to direct current adaptor. The charging apparatus includes an input side universal serial bus interface, a data voltage detection unit, a microcontroller and a first charging power output unit. The data voltage detection unit detects a kind of the alternating current to direct current adaptor. The microcontroller determines an overall output charging power of the charging apparatus according to the kind of the alternating current to direct current adaptor. The microcontroller is configured to control the first charging power output unit to output the overall output charging power to a first battery.

Abstract: A charging apparatus for recognizing an adaptor is applied to an alternating current to direct current adaptor. The charging apparatus includes an input side universal serial bus interface, a data voltage detection unit, a microcontroller and a first charging power output unit. The data voltage detection unit detects a kind of the alternating current to direct current adaptor. The microcontroller determines an overall output charging power of the charging apparatus according to the kind of the alternating current to direct current adaptor. The microcontroller is configured to control the first charging power output unit to output the overall output charging power to a first battery.

Abstract: The present invention provides a light-emitting diode (LED) drive control circuit having an input terminal and an output terminal. The input terminal and a switching device are coupled in series between power supply terminals. The output terminal is coupled to an LED. The switching device includes a single-pole double-throw switch. A first branch of the single-pole double-throw switch is a wire. A second branch of the single-pole double-throw switch includes a resistor and an indicator in series. The circuit includes a semiconductor switch that is either on or off. When the single-pole double-throw switch is switched to the first branch, the semiconductor switch is on and turns on the LED. When the single-pole double-throw switch is switched to the second branch, the semiconductor switch is off and turns off the LED. The circuit can effectively turn the LED on and off to avoid power leakage and slight emission of light.

Abstract: Techniques for updating background in a video surveillance system are disclosed. According to one aspect of the present invention, a background frame is obtained before detecting motion. An absolute value of a difference between a pixel of the current frame image and a corresponding pixel of the current background frame is calculated; a probability density of the one pixel of the current frame image is calculated to update the corresponding pixel of the current background frame according to the one pixel of the current frame image, unless the absolute value is larger than a difference threshold and the probability density is less than a probability density threshold.