Abstract: A power supply unit supplies power to a load, and the power supply unit includes a power factor corrector, a DC conversion module, and an isolated conversion module. The power factor corrector is plugged into a first main circuit board and converts an AC power into a DC power. The DC conversion module is plugged into the first main circuit board and converts the DC power into a main power. The isolated conversion module includes a bus capacitor, the bus capacitor is coupled to the DC conversion module through a first power copper bar, and coupled to the power factor corrector through a second power copper bar. The first power copper bar and the second power copper bar are arranged on a side opposite to the first main circuit board, and are arranged in parallel with the first main circuit board.

Abstract: A wireless communication device is disclosed. The wireless communication device includes a processor, a transceiver coupled to the processor, and a memory coupled to the processor. The memory is configured to store a plurality of instructions and the plurality of instructions are executed by the processor to perform operations of storing, in the memory, a duplication of each of the plurality of packets transmitted by a streaming provider; and in response to a request of retransmission transmitted by a terminal device for a lost packet, determining whether the duplication of the lost packet is stored in the memory.

Abstract: A wireless communication device is disclosed. The wireless communication device includes a processor, a transceiver coupled to the processor, and a memory coupled to the processor. The memory is configured to store a plurality of instructions and the plurality of instructions are executed by the processor to perform operations of storing, in the memory, a duplication of each of the plurality of packets transmitted by a streaming provider; and in response to a request of retransmission transmitted by a terminal device for a lost packet, determining whether the duplication of the lost packet is stored in the memory.

Abstract: A network communication device includes a transceiver circuit and a controller. The transceiver circuit is configured to transmit or receive data via a plurality of antennas. The controller is coupled to the transceiver circuit, and the controller is configured to control the transceiver circuit to establish a transmission channel to provide a connection to a first electronic device. If a number of antennas of the first electronic device is less than a number of the plurality of antennas, the controller is configured to reconfigure the transmission channel as multiple channels, in order to provide the connection to the first electronic device via a first channel of the multiple channels, and the first channel corresponds to at least one first antenna of the plurality of antennas.

Abstract: A network communication device includes a transceiver circuit and a controller. The transceiver circuit is configured to transmit or receive data via a plurality of antennas. The controller is coupled to the transceiver circuit, and the controller is configured to control the transceiver circuit to establish a transmission channel to provide a connection to a first electronic device. If a number of antennas of the first electronic device is less than a number of the plurality of antennas, the controller is configured to reconfigure the transmission channel as multiple channels, in order to provide the connection to the first electronic device via a first channel of the multiple channels, and the first channel corresponds to at least one first antenna of the plurality of antennas.

Abstract: The present disclosure discloses a packet-forwarding priority setting circuit comprising: a decision circuit configured to detect whether an application type of a packet stream is included in a table; a processing circuit configured to examine at least one preceding packet among the packets of the stream if no application type of the stream is found in the table, so as to determine the application type of the stream and store it in the table, and the processing circuit configured to determine the application type of the stream according to the table if the application type of the stream is found in the table; and a mapping circuit configured to distribute some or all of the packets of the stream to one of a plurality of queues according to the application type of the stream, in which the queues are associated with different priorities respectively.

Abstract: The present disclosure discloses a packet-forwarding priority setting circuit comprising: a decision circuit configured to detect whether an application type of a packet stream is included in a table; a processing circuit configured to examine at least one preceding packet among the packets of the stream if no application type of the stream is found in the table, so as to determine the application type of the stream and store it in the table, and the processing circuit configured to determine the application type of the stream according to the table if the application type of the stream is found in the table; and a mapping circuit configured to distribute some or all of the packets of the stream to one of a plurality of queues according to the application type of the stream, in which the queues are associated with different priorities respectively.

Abstract: A network connection device includes a wired network module, for connecting an electronic apparatus to a wired network; and a wireless network module, serving as a wireless network client to connect the electronic apparatus to a wireless network. The network connection device operates in a router mode, an AP mode or a repeater mode, and automatically switches between different modes.

Abstract: A network system includes a wireless network device, a network control device, and a first controller. The wireless network device includes an RF unit for transmitting/receiving frames and a first connection interface unit. The network control device includes a second connection interface unit, wherein the second connection interface unit is coupled to the first connection interface unit via a transmission connection, in order to perform data transmission with the first connection interface unit. When there is no data transmitted via the transmission connection, the first controller turns off at least one of power supplies of the first connection interface unit and the second connection interface unit. The first controller may be disposed in the network control device or the wireless network device.

Abstract: A network system includes a wireless network device, a network control device, and a first controller. The wireless network device includes an RF unit for transmitting/receiving frames and a first connection interface unit. The network control device includes a second connection interface unit, wherein the second connection interface unit is coupled to the first connection interface unit via a transmission connection, in order to perform data transmission with the first connection interface unit. When there is no data transmitted via the transmission connection, the first controller turns off at least one of power supplies of the first connection interface unit and the second connection interface unit. The first controller may be disposed in the network control device or the wireless network device.

Abstract: A method for selecting one channel from a plurality of channels in a wireless network system is disclosed. The channels include at least one in-use channel, a first idle channel, and a second idle channel. The method includes comparing the frequency band of the in-use channel with the frequency band of the first idle channel and the second idle channel to determine a first reference value for the first idle channel and a second reference value for the second idle channel, and comparing the first reference value with the second reference value to select one from the first idle channel and the second idle channel.

Abstract: A method of automatic certification and secure configuration of a wireless local area network (WLAN) includes performing a first configuration at a wireless access point (AP), executing a connection program at a client terminal corresponding to the first configuration, increasing a relative signal strength indicator (RSSI) threshold, and creating a connection between the access point and the client terminal create and entering an automatic configuration process.

Abstract: A method for selecting one channel from a plurality of channels in a wireless network system is disclosed. The channels include at least one in-use channel, a first idle channel, and a second idle channel. The method includes comparing the frequency band of the in-use channel with the frequency band of the first idle channel and the second idle channel to determine a first reference value for the first idle channel and a second reference value for the second idle channel, and comparing the first reference value with the second reference value to select one from the first idle channel and the second idle channel.

Abstract: An infrared temperature wave guide device that is adapted for use in all kinds of precision detecting and temperature sensing apparatus directed to apply in a contact or non-contact manner measuring, control, recording, monitoring, and inspecting on a temperature source to be measured, the structure including a wave guide tube, a housing accommodating a thermopile, a thermistor, and a circuit board, and a rear cap for securing purposes. A front end of the wave guide tube is provided with a cover to prevent entry of dusts. The housing and rear cap are formed from plastic material. The connection of the housing and the rear cap is suitably adjustable to allow mounting of different thermopiles. The structure as a whole is durable, light and compact, and has longer service life, preferred anti-oxidization capability. Besides, it ensures stable quality during mass production and is easy to process.

Abstract: An access scheme for a wireless LAN station to connect an access point on the network. This scheme allows a wireless station to finish all the processes from search to registration with an AP at a very high speed. Firstly, the time interval of beacon transmission is shortened when a wireless station is powered on. Secondly, the authentication phase in traditional registration with an AP is eliminated. Instead, a period of time on each channel is reserved. Accordingly, the wireless LAN station can use this period to exchange control frames with the AP without competing with other stations to access wireless medium. This results in quick access to the network.

Abstract: A roaming algorithm for associating a mobile station (STA) with an access point in a wireless LAN system used in an automatic guidance vehicle (AGV) application. Fast roaming is achieved by eliminating a STA's scanning time during the search of the next AP to associate with. To eliminate the scanning time, each AP is pre-configured with its adjacent APs in advance. Whenever an AP is associated with, a mobile station (STA) gets the information of neighboring APs from the currently associated AP. Then, the STA continuously monitors the signal strength of APs in its neighborhood. During roaming, the STA chooses the best AP to associate with without having to scan all the APs.