Abstract: An optical testing apparatus can be operated according to a testing method to test quality of an imaging module of an electronic device. The optical testing apparatus includes a projector, a temperature control device, a processor, and a controller. The controller can control the imaging module to capture an image from the projector and transmit the captured image to the processor. The processor processes the captured image to determine the quality of the imaging module.

Abstract: A USB connector structure for connecting an electronic device to a computer includes a cable, a first plug group and a second plug group. The first plug group and the second plug group are connected to opposite ends of the cable. The first plug group includes a first standard USB plug and a first mini USB plug electrically connected to the first standard USB plug. The second plug group is connected to another end of the cable, and includes a second standard USB plug and a second mini USB plug electrically connected to the second standard USB plug. Any two of the first standard USB plugs, the first mini USB plug, the second standard USB plug and the second mini USB plug can be respectively electrically connected with the electronic device and the computer.

Abstract: A backlight module includes a light source, a light guide plate, a diffuser plate, a first prism plate, and a second prism plate consecutively mounted together, bottom to top. The light source emits and provides light beams and is adjacent to the light guide plate. The light guide plate receives and converts the light beams into surface light, and includes a reflective layer. The diffuser plate is adjacent to the reflective layer and unifies the light beams. The first prism plate and the second prism plate can increase the brightness of the light beams. Parts of the light beams are reflected back to the light guide plate by the reflective layer, and the light beams from the light source and the light guide plate pass through the diffuser plate, the first prism plate and the second prism plate to provide needful light beams.

Abstract: A USB connector structure for connecting an electronic device to a computer includes a cable, a first plug group and a second plug group. The first plug group and the second plug group are connected to opposite ends of the cable. The first plug group includes a first standard USB plug and a first mini USB plug electrically connected to the first standard USB plug. The second plug group is connected to another end of the cable, and includes a second standard USB plug and a second mini USB plug electrically connected to the second standard USB plug. Any two of the first standard USB plugs, the first mini USB plug, the second standard USB plug and the second mini USB plug can be respectively electrically connected with the electronic device and the computer.

Abstract: A backlight module includes a housing, a light source, a light guide plate, a diffuser plate and a prism plate, and the light source, the light guide plate, the diffuser plate and the prism plate are received within the housing. The housing includes reflective coating located on an inner surface of the housing. The light source provides light beams; the light guide plate converts the light beams into corresponding surface light source. The diffuser plate is mounted on the light guide plate and unifies the light beams from the light guide plate. The prism plate is mounted on the diffuser plate and increases the illumination of the light beams. Thus, parts of the light beams are reflected by the reflective coating back to the light guide plate, and the reflected light beams pass through the diffuser plate and the prism plate.

Abstract: A heat sink for memory module includes two heat-sink plates and two fastening members. Each heat-sink plate defines two through holes. The through holes of one heat-sink plate are coaxial to the through holes of the other heat-sink plate. Each fastening member includes a first head portion and a second head portion. The first head portion is elastic and is allowed to be pushed to pass through the through holes. The two heat-sink plates are locked between the first head portion and the second head portion.

Abstract: An optical testing apparatus can be operated according to a testing method to test quality of an imaging module of an electronic device. The optical testing apparatus includes a projector, a temperature control device, a processor, and a controller. The controller can control the imaging module to capture an image from the projector and transmit the captured image to the processor. The processor processes the captured image to determine the quality of the imaging module.

Abstract: A portable electronic device includes a transformer unit, a power transmission unit electrically connected to the transformer unit, a rechargeable battery electrically connected to the power transmission unit; and an inner circuitry electrically connected to both the power transmission unit and the battery. The transformer unit regulates a voltage provided by an exterior power supply to a predetermined value, and the power transmission unit receives the regulated voltage and selectively transmits the regulated voltage to the battery or to the inner circuitry according to the value of the regulated voltage.

Abstract: A protective cover assembly is used for a battery. The battery includes a plurality of contacts. The protective cover assembly includes a door frame and a slidable door. The door frame is formed on the battery adjacent to the contacts. The slidable door is slidably received in the door frame. The slidable door can be slid along the door frame. The contacts are covered or exposed by the slidable door depending upon the position of the slidable door.

Abstract: A multi-functional wireless control device includes an operating body and a receiving unit electrically connecting with a digital port of a digital processing device. The operating body includes a shell, a control module, an infrared module, a switch and a transmit module. The shell has remote operating keys and mouse keys disposed thereon configured for inputting the corresponding controlling signals. The control module is assembled within the shell to process the inputting controlling signals and transmit the processed controlling signals to the receiving unit for establishing communication therebetween by the infrared module and/or the transmit module. The switch is configured to select between the remote controlling mode and wireless mouse mode.