Abstract: A detachable antenna and an electronic device are provided. The detachable antenna includes a connector, an antenna module, and a light-emitting module. The light-emitting module includes a light-emitting unit and a bias circuit. The bias circuit includes an input end, a first output end, and a second output end. The input end of the bias circuit receives a mixed signal from the connector. The mixed signal includes a communication signal and a drive signal. The first output end of the bias circuit outputs the communication signal to the antenna module. The second output end of the bias circuit outputs the drive signal to the light-emitting unit. The detachable antenna of the disclosure is integrated with the light-emitting module and receives the mixed signal from a single input end to implement communication and light emitting functions simultaneously.

Abstract: A wireless network transmission system is provided. The wireless network transmission system comprises a first transmission device and at least a second transmission device. The first transmission device includes a control circuit and a plurality of first antennas. The control circuit is electrically connected to the first antennas. The second transmission device is configured to be communicated with the first transmission device. The first antennas receive wireless signals from the second transmission device. The control circuit is configured to compare signal strength of the wireless signal received by each of the first antennas to generate a comparison result select at least one of the first antennas to transmit or receive the wireless signals according to the comparison result. A wireless network transmission method and a transmission device are also provided.

Abstract: A wireless network transmission system is provided. The wireless network transmission system comprises a first transmission device and at least a second transmission device. The first transmission device includes a control circuit and a plurality of first antennas. The control circuit is electrically connected to the first antennas. The second transmission device is configured to be communicated with the first transmission device. The first antennas receive wireless signals from the second transmission device. The control circuit is configured to compare signal strength of the wireless signal received by each of the first antennas to generate a comparison result select at least one of the first antennas to transmit or receive the wireless signals according to the comparison result. A wireless network transmission method and a transmission device are also provided.

Abstract: Wireless network base stations capable of receiving video signals are provided. A wireless network base station includes a video signal receiver, a video decoding unit, a first Ethernet port, and a processor. The video signal receiver receives a video signal. The video decoding unit connected to the video signal receiver decodes the video signal. The first Ethernet port connected to a network receives first data packets therefrom and transmits second data packets thereto. The processor, connected to the video decoding unit and the first Ethernet port, converts the decoded video signal to video packets and controls reception and transmission of the video packets, the first data packets, and the second data packets. The processor transmits the video packets and the first data packets to a computer and receives the second data packets from the computer wirelessly.

Abstract: An antenna device. The antenna device includes a printed circuit board, a conductive shield, a first connection portion and a second connection portion. The printed circuit board has a feed point and a ground plane insulated from the feed point. The conductive shield surrounds the printed circuit board. The first connection portion is substantially perpendicular to the printed circuit board, electrically connecting the feed point and the conductive shield. The second connection portion is substantially perpendicular to the printed circuit board, electrically connecting the ground plane and the conductive shield.

Abstract: Wireless network base stations capable of receiving video signals are provided. A wireless network base station includes a video signal receiver, a video decoding unit, a first Ethernet port, and a processor. The video signal receiver receives a video signal. The video decoding unit connected to the video signal receiver decodes the video signal. The first Ethernet port connected to a network receives first data packets therefrom and transmits second data packets thereto. The processor, connected to the video decoding unit and the first Ethernet port, converts the decoded video signal to video packets and controls reception and transmission of the video packets, the first data packets, and the second data packets. The processor transmits the video packets and the first data packets to a computer and receives the second data packets from the computer wirelessly.

Abstract: Earphones are provided. An earphone includes a first speaker, a second speaker, and an extendable winding structure. The first speaker can hang on one ear of a person. The second speaker is detachably fixed on the first speaker. The extendable winding structure is disposed in the first speaker and connected with the second speaker. The second speaker can be moved to the other ear of the person by extending the extendable winding structure.

Abstract: An antenna device. The antenna device includes a printed circuit board, a conductive shield, a first connection portion and a second connection portion. The printed circuit board has a feed point and a ground plane insulated from the feed point. The conductive shield surrounds the printed circuit board. The first connection portion is substantially perpendicular to the printed circuit board, electrically connecting the feed point and the conductive shield. The second connection portion is substantially perpendicular to the printed circuit board, electrically connecting the ground plane and the conductive shield.

Abstract: A portable electrical device with a planar antenna for wireless transmitting data includes a host case for assembling a motherboard therein and a display module pivotally connected to the host case. The display module has a housing for containing a display panel and the planar antenna. The planar antenna is connected to the motherboard via a transmitting line for transmitting and receiving the signals to and from the planar antenna.

Abstract: A method of downloading data from a network using a network device. A network device coupled to a network is first provided. The network device uses a network protocol to download data from the network. Next, the network device downloads data corresponding to search parameters from the network according to the network protocol. The downloaded data can be stored on a storage device. The network can be the Internet or a wireless one.

Abstract: An antenna module includes a circuit board, a differential-type amplifier, and a dipole antenna. The dipole antenna can be formed with two electrodes disposed on the circuit board. With the structure of the antenna module, a transmitting antenna can be designed by coupling the two electrodes of the dipole antenna to output terminals of the differential-type amplifier so as to transmit signals. In design of a receiving antenna, the two electrodes of the dipole antenna can be coupled to input terminals of the differential-type amplifier so as to receive signals. Further, if the main function chip has built-in differential power amplifier or differential low noise amplifier, a circuit module for wireless signal transmitting and receiving can be formed by directly coupling the dipole antenna to the differential power amplifier or the differential low noise amplifier.

Abstract: A directional antenna apparatus comprises a pedestal, a directional plate, a printed circuit board and a digital transmission line. The directional plate is mounted on the pedestal with a universal joint, thereby the direction and the tilted angle of the directional plate can be adjusted arbitrarily toward to a wireless access point for receiving and sending radio frequency (RF) signals. The printed circuit board is fabricated in the pedestal and has decoding circuits defined thereon so as to decode the RF signals received by the directional plate to digital signals. And one end of the digital transmission line penetrating through the housing of the pedestal to connect with the printed circuit board. Another end of the digital transmission line is connected to a system host for conveying the decoded digital signals.

Abstract: A portable electrical device with a planar antenna for wireless transmitting data includes a host case for assembling a motherboard therein and a display module pivotally connected to the host case. The display module has a housing for containing a display panel and the planar antenna. The planar antenna is connected to the motherboard via a transmitting line for transmitting and receiving the signals to and from the planar antenna.

Abstract: An antenna structure for use in a host computer including a case having an opening. The antenna structure includes a plate and a PCB antenna. The plate is coupled to the case for covering the opening. The PCB antenna is provided on the plate and including an antenna pattern and a circuit signally-connected with the antenna pattern.

Abstract: An external connection apparatus with the Bluetooth function includes a host controller interface device, a RFCOMM transmission device, a port emulated body, and a switching device. If the host side has the Bluetooth driving program, the host controller interface device can pack the received digital data into an HCI packet and export the packet to the host side via the switching device. Next, the Bluetooth driving program at the host side can be executed to process the subsequent data. On the contrary, if the host side does not have the Bluetooth driving program, then the HCI packet transmitted from the host controller interface device will be first processed to have the format of the common sharing port (COM port) by the RFCOMM transmission device and the port emulate body. Then, it is exported from the switching device to the host side and is processed by the application software, which can support the format of the COM port.

Abstract: An antenna module includes a circuit board, a differential-type amplifier, and a dipole antenna. The dipole antenna can be formed with two electrodes disposed on the circuit board. With the structure of the antenna module, a transmitting antenna can be designed by coupling the two electrodes of the dipole antenna to output terminals of the differential-type amplifier so as to transmit signals. In design of a receiving antenna, the two electrodes of the dipole antenna can be coupled to input terminals of the differential-type amplifier so as to receive signals. Further, if the main function chip has built-in differential power amplifier or differential low noise amplifier, a circuit module for wireless signal transmitting and receiving can be formed by directly coupling the dipole antenna to the differential power amplifier or the differential low noise amplifier.

Abstract: A structure for an Inverted-F antenna includes: a radiating portion forming a longitudinal side of the Inverted-F antenna, a support portion integrally formed with the radiating portion and perpendicularly connected to the radiating portion, a feed-in portion integrally forming a center extending portion of the Inverted-F antenna and a signal transmission line connected to the feed-in portion and the ground plane for signal transmission between the antenna and a connected communication host. The signal transmission line includes a core wire and a ground wire. The core wire is connected to the feed-in portion and the ground wire is connected to the ground plane. The antenna is capable of keeping a stable radio frequency characteristic with its simple and compact structure.