Abstract: An electronic device includes a case, an electronic assembly, a rotary member and a positioning module. The case includes a bottom plate and a side plate. The electronic assembly includes a circuit board and an electronic component. The electronic component is fastened to the circuit board. The circuit board is disposed on the bottom plate. The rotary member is disposed through the side plate and an assembling hole of the electronic component in sequence. The positioning module is fastened to the bottom plate, and the positioning module is disposed through the circuit board of the electronic assembly. The positioning module has a blocking surface facing the bottom plate. A part of the circuit board is located between the blocking surface and the bottom plate, and a distance between the blocking surface and the bottom plate is larger than a thickness of the circuit board.

Abstract: A button structure and an electronic device using the same are provided. The button structure is disposed on a casing and comprises an elastic element and a button. The elastic element comprises a first support portion, a second support portion and a carrying portion. The carrying portion is connected between the first support portion and the second support portion. The first support portion and the second support portion lean on the casing. The button is disposed on the carrying portion.

Abstract: A button structure and an electronic device using the same are provided. The button structure is disposed on a casing and comprises an elastic element and a button. The elastic element comprises a first support portion, a second support portion and a carrying portion. The carrying portion is connected between the first support portion and the second support portion. The first support portion and the second support portion lean on the casing. The button is disposed on the carrying portion.

Abstract: A multi-layer heat-dissipating device is provided. The multi-layer heat-dissipating device does not use fans, absorbs heat energy sequentially with heat-conducting elements and a heat-dissipating metal sheet, and effectively blocks heat radiation of a heat-generating element, so as to achieve the effects of power saving, no noise, and less occupied space.

Abstract: A network audio/video communication system and a method thereof, which is used to ensure data security of a audio/video communication conducted through a network by verifying the user ID codes of a sending party and a receiving party and locking-in of the communication between the two parties. The method is realized through the following steps: activating the audio/video communication session; verifying the user ID codes of the sending party and the receiving party; determining the authorization level of the receiving party by the sending party, based on the user ID code of the receiving party; locking-in the communication connection between the sending party and the receiving party, and activating the communication connection between the sending party and the receiving party.

Abstract: A netphone and a communication method therefor are provided. The netphone comprises a main central processing unit, a video output module, an audio receiver, an audio output module, a ring generator, a command processing module, an input interface, a video capture module, a hang-up detection module, a storage module, a transceiver, and a network interface. The main central processing unit further comprises a multiplexer/demultiplexer, a video processing module, an audio processing module, a communication control module, and a system control module. The netphone may automatically establish a communication connection according to the user's command, and close the video communication at anytime, which is convenient for operation and protects personal privacy sufficiently.

Abstract: A portable data storage device is provided, comprising memory, a first data transmission interface and at least a second data transmission interface. The first data transmission interface provides connection of the portable data storage device to an electronic device. Meanwhile the second data transmission device, having the same interface as the first data transmission interface, provides further connection of other devices to the electronic device through internal connection between the first and the second transmission interfaces.