Abstract:
A loudspeaker assembly includes a first shell, a second shell, and a loudspeaker embedded in the first shell. Together the first shell and the second shell enclose a sound chamber. At least one of the first shell and the second shell can be folded to adjust the size of the sound chamber.
Abstract:
A traffic management system includes a data processing unit which communicates with a road leading unit and a vehicle management unit. The road leading unit comprises a plurality of grooves and isolation railings, the grooves are formed on a road, and the isolation railings are received in the grooves and can be opened to divide the road. The data processing unit can receive vehicle identification information and driving direction information from the vehicle management unit. The data processing unit comprises a data analysis module and a control module. The data analysis module is operable to estimate road condition information and count a total traffic demand index for each road according to the vehicle identification information and the driving direction information. The control module is operable to control the isolation railings to open or retract according to the total traffic demand index.
Abstract:
In an address book management method of an electronic device, a directory of members of an address book is created. A communication bulk and a communication count of each of the members listed in the address book are obtained. The communication bulk for each member is a total quantity of electronic communication in a predetermined time period between a predetermined user of the electronic device and the member, the total quantity measured according to a predetermined criterion, and the communication count for each member is a total number of occasions of electronic communication between the user and the member in the predetermined time period. An accumulative contact quantity index of each member is calculated according to the calculated communication bulk and communication count of the member. Thus, the members in the directory of the address book are ordered according to the accumulative contact quantity indexes.
Abstract:
A charging device comprises a rotating unit, an axle unit assembled to the rotating unit and engaging the rotating unit, and two charging units assembled to the axle unit. Each charging unit includes a magnet retainer assembled to the axle unit and engaging the axle unit, a plurality of magnets received in the magnet retainer, and a case rotatably assembled to the axle unit and including a plurality of windings. Rotation of the rotating unit drives the axle unit and the magnet retainers to rotate, the rotating magnet retainers and magnets further rotate relative to the cases due to the inertia of the cases, and the magnets move relative to the windings and generate induction currents in the windings, for charging a battery.
Abstract:
A socket connector is configured for receiving a first card and a second card. The socket connector includes a latching seat, a plurality of latching plates, and a shielded case. The latching seat includes a first surface and an opposite second surface, the first surface defines a sliding groove, a second surface defines a receiving slot. The latching plates extend from edges of the first surface. The shielded case is secured in the receiving slot, and defines an entrance. The first card is received in the sliding groove and latched by the latching plates, the second card is inserted into the shielded case through the entrance. The disclosure further discloses an electronic device using the socket connector.
Abstract:
A portable electronic device includes a first body, a second body, and two pivot members. The first body defines two holes. A first axis is defined along the centerlines of the holes. The second body defines a hole, a second axis is defined the center of the hole. Each of the pivot members includes a first connecting portion and a second connecting portion extending from two ends thereof, each first connecting portion is rotatably assembled in the corresponding holes, each second connecting portion is rotatably assembled in the hole. The second body rotates around the first axis, and rotates around the second axis.
Abstract:
A key coding circuit includes N keys, a signal processing unit, a bus, and a ground wire, and each key includes an input end and a ground end electrically connected to the ground wire. The signal processing unit includes M signal lines, where M is the smallest positive whole number not less than Log(N+1, 2), and at least one signal line is electrically connected to the corresponding input end. Each key is coded for M-bit binary, the floating signal lines correspond to the binary code 1, and the signal lines corresponding to binary code 0 are electrically connected to the input end of the corresponding keys.