Abstract: A method for feeding back failures of a set-top box (STB), includes: providing a Universal Serial Bus (USB) storage device with a diagnostic program and a reporting program; inserting the USB storage device into the STB; loading the diagnostic program from the USB storage device to the STB; running the diagnostic program to find failures within the STB; writing the failures of the STB to the USB storage device; inserting the USB storage device into a network device; and running the reporting program by the network device to feed back the failures of the STB to a remote server.

Abstract: A method for managing customer premises equipment (CPE) includes the following steps. A management device generates a management request frame according to a name of a CPE and a command for the CPE to execute. The management device broadcasts the management request frame to the CPE. The CPE determines whether the management request frame is correct after the CPE receives the management request frame. The CPE executes the command in the management request frame if the management request frame is correct. The CPE reports a result to the management device. A communication system employing the method is also provided.

Abstract: A network device connected to a server includes a firmware upgrading determining module, a communication module, a storage module, a reboot determining module, and a reboot scheduling module. The firmware upgrading determining module determines whether current firmware of the network device needs to be upgraded. The communication module downloads the newest firmware from the server, and upgrades the current firmware if the current firmware needs to be upgraded. The storage module saves a reboot flag and a preset reboot time window. The reboot determining module determines whether the network device needs to be rebooted immediately according to the reboot flag, and determines whether the network device has a preset reboot time window. The reboot scheduling module determines what time to reboot during the reboot time window if the network device does not need to be rebooted immediately and the network device has a preset reboot time window.

Abstract: A supporting structure and a display device using the same are provided. The supporting structure enables the display device to have low electromagnetic interference (EMI). The display device has a display screen and the supporting structure. The supporting structure comprises a base, a low impedance stand and a high impedance stand. The low impedance stand is mechanically and electrically connected to the base. The high impedance stand is mechanically connected to the base, but electrically isolated from the base.

Abstract: A method for managing customer premises equipment (CPE) includes the following steps. A management device generates a management request frame according to a name of a CPE and a command for the CPE to execute. The management device broadcasts the management request frame to the CPE. The CPE determines whether the management request frame is correct after the CPE receives the management request frame. The CPE executes the command in the management request frame if the management request frame is correct. The CPE reports a result to the management device. A communication system employing the method is also provided.

Abstract: A filtering device and a projector utilizing the same. The filtering device receives an electronic device therein, and includes a housing, a filter, a fan, a first temperature sensor, a second temperature sensor, a circuit board, and an alarm. The first temperature sensor detects a first temperature outside the housing. The second temperature sensor detects a second temperature inside the housing. The circuit board includes a controller to be coupled to the fan, the first temperature sensor, and the second temperature sensor. When the second temperature detected by the second temperature sensor exceeds the first temperature detected by the first temperature sensor, the voltage of the fan is increased by the controller to increase the rotation speed of the fan. The alarm is coupled to the controller. When the voltage of the fan exceeds a critical value, the alarm is actuated to indicate that the filter needs to be changed.

Abstract: The invention is to provide a projector of external power supply, which comprises: a DC (direct current) power supply port, a step-up circuit, a voltage regulation circuit, a lamp, and an igniter. Wherein, a DC voltage provided from outside is received by the DC power supply port and is converted to a first electric potential by the step-up circuit. The first electric potential may actuate the igniter to light up the lamp and, after the lamp is lighted up, the step-up circuit regulates the working voltage of the lamp to a second potential voltage. Wherein, the first electric potential is higher than the second electric potential.

Abstract: The invention is to provide a projector of external power supply, which comprises: a DC (direct current) power supply port, a step-up circuit, a voltage regulation circuit, a lamp, and an igniter. Wherein, a DC voltage provided from outside is received by the DC power supply port and is converted to a first electric potential by the step-up circuit. The first electric potential may actuate the igniter to light up the lamp and, after the lamp is lighted up, the step-up circuit regulates the working voltage of the lamp to a second potential voltage. Wherein, the first electric potential is higher than the second electric potential.