Patent ID: 7536202

Claim:
A wireless network device provided with a signal detection function that is equipped with a battery and is selectively connected to a PC, said wireless network device comprising: a wireless network communication module for transceiving a wireless network signal; a detection module connected to the wireless network communication module; a processor connected to the wireless network communication module to convert the wireless network signal received by the network communication module into a digital signal and then transmit the digital signal to the PC, or transmit the digital signal to the wireless network device from the PC; a power module connected to the battery for selectively receiving a power from the PC or the battery to generate a load voltage according to the source of the received power; a voltage regulator connected to the processor; wherein the wireless network device is arranged such that when the power module receives the power only from the battery, the load voltage is less than a determination value, and the voltage regulator switches the device into a wireless network signal detection mode in which the detection module connected detects and scans the wireless network signal; wherein the device is arranged such that when the power module receives the power from the PC, the load voltage is higher than the determination value, the voltage regulator switches the device into a wireless NIC mode in which the wireless network communication module converts the wireless signal received by the wireless network communication module into a digital signal and then transmit the digital signal to the PC.