Abstract: A firmware update method for a smart charging device is disclosed. First, firmware of a first board is updated, and the first board then sets work flags to second, third board and fourth boards. The first board queries a firmware version of the second board, and then presets the work flag of a firmware version as false. When the firmware version of the second board is older, the first board sets the work flag as true, and updates the firmware of the second board, and sets the work flag as false. The first board again queries whether the work flag is set as true, when the firmware versions of the second and first boards are the same, the work flag is set as false. According to the above procedures, the firmware of the third and fourth boards is updated, so as to completely update firmware of all boards.

Abstract: A smart charging device includes a plurality of charging regions, and each charging region includes DC charging sockets disposed therein and configured to charge the mobile electronic devices. The smart charging device includes a to-be-charged device connection detection module, a power detection module, an abnormal detection processing module, a power overload processing module, a periodic alternating charging module, an abnormal charging processing module, a to-be-charged module, a remaining power charging module. These modules can process various conditions of the mobile electronic devices during charging process, so as to take turn to charge the external mobile electronic devices by allocating time to the charging regions, and implement power management mechanism.

Abstract: A display screen support device includes a base unit providing an upright shaft and a stop member at the upright shaft, a first support arm including a first pivot-connection device coupled to the upright shaft and supported on the stop member and a first extension device transversely extended from the first pivot-connection device for supporting a display screen, and a second support arm including a second pivot-connection device coupled to the first pivot-connection device and a second extension device transversely extended from the second pivot-connection for supporting another display screen. The second pivot-connection device of the second support arm relative can be biased relative to the first pivot-connection device of the first support arm within a limited angle for allowing adjustment of the relative angular position between the two supported display screens.

Abstract: An adjustable tablet device holder includes a holder body including an arched sliding slot located in the back side and a locating plate extended from the back side adjacent to the arched sliding slot, and an adjustment mechanism including a turnable mounted in the holder body and having a position-limit rod extended out of the arched sliding slot and movable between the two ends of the arched sliding slot to rotate the turnable and lockable to the locating plate by a lock to stop the turntable from rotation and four clamping plates vertically and horizontally mounted in four sides and defining a clamping space for holding a mobile tablet device and movable inwardly and outwardly to adjust the horizontal width and vertical height of the clamping space upon rotation of the turnable.

Abstract: An adjustable dual-screen monitor stand includes a base member having an upright post, an upper bushing and a lower bushing mounted on the upright post at different elevations, a first cantilever swivel screen mount including a first lower swivel arm, a first upper swivel arm and a first screen holder pivotally coupled to one another and pivotally supported on the upper bushing to hold a first flat display monitor and to allow adjustment of the angular position of the supported first flat display monitor, and a second cantilever swivel screen mount including a second lower swivel arm, a second upper swivel arm and a second screen holder pivotally coupled to one another and pivotally supported on the lower bushing to hold a second flat display monitor and to allow adjustment of the angular position of the supported second flat display monitor.

Abstract: A mobile electronic device storage and charging system includes a housing for accommodating mobile electronic devices, which includes a wheeled hollow base frame shell equipped with a retractable handle and carrying handles, a cover shell for covering the wheeled hollow base frame shell, and two sliding rail assemblies hinged between the hollow base frame shell and the cover shell at different elevations for enabling the cover shell to be opened from the wheeled hollow base frame shell through 90° angle and then moved to one lateral side relative to the wheeled hollow base frame shell, a transmission control system, which includes a power management unit and a connector module controllable to charge mobile electronic devices and to link mobile electronic devices to the internet, and a power cable for electrically connecting the power management unit to an external power source for power input.

Abstract: A sound effect amplification diffuser includes a deck including a cover member defining a top bearing space, a sound collection hole at one lateral side of the bearing space, a sound collecting hood at the bottom side thereof around the sound collection hole and a sound grille at one side wall thereof opposite to the sound collection hole, a base member affixed to the bottom side of the cover member and an accommodation chamber defined between the base member and the cover member, and an amplification diffuser suspending in the accommodation chamber and connected between the sound collecting hood and the sound grille and adapted to enhance the intensity of the output sound of a mobile electronic device being positioned in the bearing space.

Abstract: A notebook computer storage and charging cart includes a cart having mobile racks arranged in stacks for carrying notebook computers, a power system having electrical power connectors connectable to an external power source and battery charges connected to the electrical power connectors and controllable by a power management device to charge the notebook computers subject to a predetermined charging time, and a network unit having a network connection apparatus installed in the cart and first and second network lines respectively connected between first and second ports network connection apparatus and the notebook computers for the transmission of network signals for real-time online data update and download.

Abstract: A support stand includes a mounting assembly mountable on a table top, a suspension arm coupled to a rod member of the mounting assembly to hold a rotary barrel, a swinging arm pivotally connected to the rotary barrel of the suspension arm, a stretcher mounted in a frame bar of the swinging arm and a holder frame assembly coupled to the swinging arm to support an object. The stretcher includes a sleeve coupled to arched sliding slots of the frame bar of the swinging arm by a pivot pin, a connection frame plate pivotally coupled between the pivot pin and a mounting lug at the rotary barrel, a spring member and an adjustment screw assembly mounted in the sleeve for allowing adjustment of the elevation of the supported object with less effort and positive positioning of the supported object after an elevation adjustment.

Abstract: A cooler pad for supporting a notebook computer on a user's lap is disclosed to include a soft pad having an accommodation space, a cooling fan mounted in the accommodation space, two slotted cover plates attached to the top and bottom sides of the accommodation space and fastened together to hold down the cooling fan in the accommodation space for enabling the power cord of the cooling fan to be extended to the outside of the soft pad for connection to the notebook computer to obtain the necessary working voltage for the cooling fan during operation of the notebook computer.