Abstract:
The invention herein is fallback function communications device comprised of a microprocessor, utilized to perform a predetermined operation and processing of a predetermined input signal and then output a corresponding signal, as well as a minimum of one relay circuit having an amplifier circuit and a relay. The terminal at the first side of the relay is connected to the telephone line tip/ring terminal, while the terminal at the second side of the relay is connected to the Public Services Telephone Network (PSTN) tip/ring terminal of the microprocessor. An off-hook detection circuit is connected to the PSTN tip/ring terminal and also connected to the ring detection terminal of the said microprocessor. A dummy load circuit is connected to the tip terminal and the ring terminal of the PSTN. As such, in the event of Voice Over Internet Protocol (VOIP) system failure, the present invention is capable of automatically switching to the PSTN and thereby maintain telephone system operation.
Abstract:
A log in system and a log in method of a field are provided. The log in method includes: broadcasting a first RF (RF) signal and a second RF signal by a gateway; a sensing card receiving the first RF signal to switch from a disable mode to an enable mode, the sensing card receiving the second RF signal in the enable mode and generating a communicating channel between the sensing card and the gateway in response to the second RF signal; the gateway receiving sensing card information from the sensing card via the communicating channel and recording an identity corresponding to the sensing card to a log in list corresponding to the field according to the sensing card information.
Abstract:
A multi-band antenna module is adapted to be disposed on a casing. The multi-band antenna module includes a main radiator, and a first, a second, a third and a fourth radiator. The main radiator has a feed-in terminal and a first ground terminal. The first radiator is connected to the main radiator and configured to couple a first frequency band. The second radiator is connected to the main radiator and configured to couple a second frequency band. The third radiator is connected to the main radiator and configured to couple a third frequency band. The fourth radiator is located beside the main radiator and configured to couple a fourth frequency band and has a second ground terminal. The main radiator, the first radiator, the second radiator, the third radiator and the fourth radiator are adapted to form a 3D structure along an outline of the casing.
Abstract:
A network sharing system includes an outdoor wireless transceiver device, an indoor network sharing device, and a high-speed Ethernet transmission cable. The outdoor wireless transceiver device includes a high-frequency network transceiver module and a first Ethernet port and the high-frequency network transceiver module is connected to the first Ethernet port and is configured to receive a high-frequency network signal. The indoor network sharing device includes a processing module and a second Ethernet port. The high-speed Ethernet transmission cable has a transmission rate above 1 giga bits per second (Gbps), two ends of the high-speed Ethernet transmission cable are respectively connected to a first RJ45 connector and a second RJ45 connector, the high-speed Ethernet transmission cable is provided with a flat cable segment, the first RJ45 connector is connected to the first Ethernet port, and the second RJ45 connector is connected to the second Ethernet port.
Abstract:
An electronic device holder used to be fixed on a moving carrier for holding an electronic device is provided. The electronic device holder includes a holder, a fixing element, a moving unit and at least one first connector. The fixing element fixed on the holder has a first limiting structure. The moving unit disposed between the holder and the fixing element moves relative to the holder. The moving unit has a second limiting structure used to lock with the first limiting structure for fixing the moving unit on a lock position or an open position. The first connector is disposed on the moving unit and used to connect with a second connector when the moving unit is located on the lock position relative to the holder. The electronic device holder integrates functions of holding and charging for the electronic device.
Abstract:
An electronic device including a casing, an optical fiber connector and a protecting cover is provided. The case includes an opening and a first engaging member. The optical fiber connector is disposed in the opening. The protecting cover is disposed at the opening and includes a second engaging member movably engaged with the first engaging member so that the optical fiber connector is exposed or shielded by the protecting cover. An optical fiber connector having a connecting port, a first engaging member and a protecting cover is further provided. The first engaging member is disposed besides the connecting port. A second engaging member of the protecting cover is movably disposed at the first engaging member so that the protecting cover exposes or shields the connecting port. The protecting cover is capable of fixing an optical fiber cable and shielding a light emitted from the optical fiber connector.
Abstract:
A magnetic stripe reader apparatus comprises a first casing, a second casing, a magnetic stripe reader unit, and at least a connecting element. The first casing has an opening, a first positioning portion, and an adjustable fixing portion. The second casing has a second positioning portion disposed corresponding to the first positioning portion, and a through hole disposed corresponding to the adjustable fixing portion. The magnetic stripe reader unit is disposed between the first and second casings, and has a magnetic stripe reader head and a fixing element disposed on a side of the magnetic stripe reader head. In assembly, the connecting element passes through the through hole and connects to the adjustable fixing portion to fix the first and second casings. The second positioning portion and the first positioning portions hold the fixing element, and the magnetic stripe reader head is exposed from the opening.
Abstract:
A power socket includes a socket main body, a front cover and a safety gate mechanism. The front cover has two openings. The safety gate mechanism includes a casing and a safety gate. The casing located between the socket main body and the front cover has two inserted holes and a protrusion. The inserted holes are aligned with the openings. The safety gate slidably disposed at the casing is dislocated from the protrusion. When the safety gate is at a first position, the safety gate blocks the inserted holes, and two terminals of a plug push the safety gate through the two openings to make the safety gate slide to expose the inserted holes. When an object pushes the safety gate through one of the openings, the safety gate rotates to drive a part of the safety gate to be aligned with the protrusion to avoid exposing the inserted holes.
Abstract:
An electronic device with electromagnetic interface protection including a first printed circuit board, a second printed circuit board, a shielding member, and a first fixing member is provided. The shielding member is located between the first printed circuit board and the second printed circuit board. A first end of the shielding member is fixed to the first printed circuit board, and the first fixing member is buckled to a second end of the shielding member so that the shielding member is fixed to the second printed circuit board.
Abstract:
A signal expansion selection device receives a plurality of selection data from users to select one of audio-video signals generated from audio-video apparatuses. Each of the audio-video signals selected by a corresponding one of the users is converted into an audio-video datum for use by the user. The signal expansion selection device includes selection ports, a processing unit, multiplexing modules, and audio-video output ports. The selection ports send the selection data to the processing unit. The processing unit processes the selection data with an algorithm to generate a control command. The multiplexing modules select one of the audio-video signals according to the control command. The processing unit decodes and converts the selected audio-video signal to audio-video data and enables the audio-video data to be sent from one of the audio-video output ports.