Abstract: A protective case is configured to receive and protect an electronic device with an audio interface. The protective case includes an audio jack aligning with the audio interface of the electronic device, an earphone connected to an earphone wire, a circuit board, a plurality of contacts set in the audio jack and connected to the earphone wire via the circuit board, and an audio connector. The audio connector includes a base and a connection-peg. The base includes a plurality of metal contacts, and each metal contact corresponds to one contact. The connection-peg is electrically connected to the plurality of metal contacts. When the connection-peg is inserted into the audio interface of the electronic device via the audio jack, the plurality of the contacts are correspondingly and electrically connected to the plurality of the metal contacts, and the electronic device is electrically connected to the earphone.

Abstract: A support device includes a main body and two supporting arms. The main body is configured to support an electronic device. The main body defines a slot. The slot is configured to allow lights to pass through when a camera of the electronic device captures an image. Two supporting arms are coupled to the main body. The two supporting arms are configured to form a first predetermined angle with the main body and are positioned at the first predetermined angle. The two supporting arms are configured to contact a surface to form three supporting points when the two supporting arms are arranged on the surface, solely supporting the main body and the electronic device above the surface. The three supporting points on the surface is distributed in a shape of a surface.

Abstract: A winder includes a case including a base, a winding device positioned on the base for winding or releasing the wire, a braking device located between the winding device and the base, and a loading board positioned on the winding device. The braking device includes a ratchet and a pawl positioned aside the ratchet. The winding device, the ratchet and the loading board can rotate together relative to the base. When the pawl is coupled to the ratchet, rotation of the winding device drives the ratchet and the loading board to rotate along a first direction, for releasing the wire from the winding device. When the pawl is detached from the ratchet, the winding device rotates along a second direction counter to the first direction and drives the ratchet and the loading board to rotate along the second direction, for winding the wire to the winding device.

Abstract: An assistance device includes a main body, a first permanent magnet, a second permanent magnet, a coil, and a supporting arm. The main body can be configured to support an electronic device. The main body defines a receiving space. The first permanent magnet and the second permanent magnet are fixed in the receiving space. The second permanent magnet and the first permanent magnet cooperatively form a magnetic field. The coil is rotatably received in the receiving space. The supporting arm is fixed to the coil and rotatably coupled to the main body. The supporting arm is steady with respect to the surface when the main body is rotated with respect to the surface. The first permanent magnet and the second permanent magnet rotate with respect to the coil. The coil generates power for the electronic device at the coil goes through the magnetic field.

Abstract: A loudspeaker which is capable of attaching to an accessory of an electronic device. The loudspeaker includes a first panel; a second panel; a third panel; a fourth panel; a fifth panel; a sixth panel, wherein the first panel, the second panel, the third panel, the fourth panel, the fifth panel, and the sixth panel are each made of paper material and portray graphics in virtual three-dimensional. A first horn is attached on the inner side of the first panel and a second horn is attached on the inner side of the second panel.

Abstract: A cord coiling device for coiling a headphone cord is provided. The cord coiling device includes a body, a fixing pillar accommodated in the body, a deceleration gear accommodated in an accommodation cavity, a plurality of first magnets set on a first bottom side of the body, and a plurality of second magnets set on the deceleration gear. The body and the deceleration gear stand stable under an attraction force between the first magnets and second magnets, the deceleration gear rotates under a external force, then the body rotates to coil the headphone cord; when a headphone is stuck, the headphone cord is strained and applies a pulling force to the body to stop the body, the body stops rotating and the deceleration gear continues rotating under the external force. An electronic device having the cord coiling device is also provided.

Abstract: A protective case for an electronic device includes a PCB and other components and devices. The other components and devices arranged on the case are connected to the PCB, the devices include a battery, a socket configured to accommodate a wireless communication device, a data connector, a wireless communication module, and a control module. The control module controls the battery to charge the electronic device and activates the wireless communication module to connect to the electronic device through the data connector, if the data connector is in use. The wireless communication module is controlled to communicate with the wireless communication device if the wireless communication device is removed from the socket and the battery is controlled to supply power to the wireless communication device if the wireless communication device is inserted into the socket.

Abstract: A protection case for protecting an electronic device includes a cover body shaped to receive and hold to the electronic device. A cable winding apparatus is arranged adjacent the cover body and includes a wheel rotatably arranged adjacent the cover body, and a pivot protruding from a center of the wheel and configured to wind a cable of an earphone. A through hole is arranged on a side wall of the pivot and configured to permit a first end of the earphone, which connects to a jack, to pass through.

Abstract: A protective case for an electronic device includes a PCB and other components and devices. The other components and devices arranged on the case are connected to the PCB, the devices include a battery, a socket configured to accommodate a wireless communication device, a data connector, a wireless communication module, and a control module. The control module controls the battery to charge the electronic device and activates the wireless communication module to connect to the electronic device through the data connector, if the data connector is in use. The wireless communication module is controlled to communicate with the wireless communication device if the wireless communication device is removed from the socket and the battery is controlled to supply power to the wireless communication device if the wireless communication device is inserted into the socket.

Abstract: A protection case for protecting an electronic device includes a cover body shaped to receive and hold to the electronic device. A cable winding apparatus is arranged adjacent the cover body and includes a wheel rotatably arranged adjacent the cover body, and a pivot protruding from a center of the wheel and configured to wind a cable of an earphone. A through hole is arranged on a side wall of the pivot and configured to permit a first end of the earphone, which connects to a jack, to pass through.

Abstract: A system for diagnosing production logistics abnormalities includes a first server (11) and a second server (12). The second server transmits production logistics information to the first server. The first server analyzes the received information, and determines whether production logistics activities are abnormal.

Abstract: A method for transmitting logistics information among a plurality of role players includes a logistics control system operating on an electronic communications network. The system has a security mechanism which assigns different authorities to various role players in accordance with a particular function of each role player. Logistics information provided by any role player under his authority can be posted onto a shared area of a network server. Only role players who are so authorized can access the logistics information. Access can be done in real time. Thus logistics information can be transferred and shared in real time, while confidential information as between two role players is not accessible by a third role player.