Abstract: An object detection system and an object detection method are provided. The object detection system includes a transmitter, a receiver, and a processing circuit. The processing circuit is configured to: control the transmitter to transmit by a predetermined field pattern multiple detection signals in different time frames along a main beam direction; control the receiver to receive multiple reflection signals; correspondingly calculate multiple received powers, distances and velocities; perform a clustering process on the distances and the velocities to find the received powers, the distances and the velocities corresponding to a main target; perform an association process to track the distances and the received powers of the main target in the different time frames; and calculate a power and a distance trend of the main target, and determine whether an early alarm event is to occur according to a relationship between the power and the distance trend.

Abstract: A communication equipment receives a plurality of network sessions and includes a memory and a processor. The memory stores a plurality of software modules. The processor is connected to the memory and configured to implement the following steps. A network session inferring step is performed to execute an inference software module, and the inference software module processes at least one network packet of each of the network sessions and a packet characteristic module according to a machine learning algorithm to infer a priority level. An adaptive priority list establishing step is performed to execute a classification software module, and the classification software module establishes an adaptive priority list according to the priority levels of the network sessions. The communication equipment transmits the network packets of each of the network sessions to a network according to the adaptive priority list so as to set QoS of the network sessions.

Abstract: An electronic device and an antenna feeding module are provided. The electronic device includes a metal housing and an antenna feeding module. The metal housing is provided with a slot with an opening end and a closed end. The antenna feeding module includes a carrier board and a feeding circuit. The feeding circuit includes a feeding element and a radiating element. The radiating element includes a coupling portion, a radiating branch and a feeding portion. There is a coupling gap between the coupling portion and the metal housing, and the coupling gap is less than 0.5 times the width of the slot. The feeding circuit is used to excite the metal housing, so that the metal housing and the radiating element generate a first resonance path with a first resonance mode and a second resonance path with a second resonance mode.

Abstract: An antenna module, a metamaterial structure and an electronic device are provided. The electronic device includes a housing, a glass material layer and an antenna module. The antenna module includes a substrate, at least one radiating element and a metamaterial structure. The metamaterial structure includes a metamaterial substrate, a plurality of first metal conductors, and a plurality of second metal conductors. The first metal conductors are disposed on the first surface of the metamaterial substrate and are spaced apart at intervals from each other, and the second metal conductors are disposed on the second surface of the metamaterial substrate and are spaced apart at intervals from each other. The first metal conductors respectively correspond to the second metal conductors. Shapes of the first metal conductors are different from shapes of the second metal conductors.

Abstract: An electronic device is provided. The electronic device includes a metal housing, a substrate and a radiating element. The metal housing is provided with a slot, and the slot includes an opening end and a closed end. The slot has a first wall of the slot and a second wall of the slot opposite to each other at the position of the opening end. The first wall of the slot is located between the second wall of the slot and the closed end. There is a predetermined distance between the first wall of the slot and the closed end. A feeding portion of the radiating element is connected to a feeding element and a signal is fed through the feeding element, so that the radiating element is used for exciting the metal housing to generate at least one resonance frequency.

Abstract: A transparent electromagnetic wave focusing device is provided, which includes a plurality of metamaterial unit cells arranged to form a metamaterial array plate, and each metamaterial unit cell includes a plurality of metal layers and a plurality of transparent substrates stacked alternately. Each of the metal layers has a comb-tooth pattern, and the plurality of metamaterial unit cells correspond to a plurality of comb-tooth pattern combinations, respectively. The metamaterial array plate has an incident surface and an exit surface opposite to each other, and for an incident electromagnetic wave with a predetermined operating frequency band incident from the incident surface, the metamaterial unit cells correspond to a plurality of compensation phase differences, such that the incident electromagnetic wave that passes through the exit surface are focused on a reference point. The comb-tooth pattern combinations vary with the corresponding compensation phase differences.

Abstract: A radio frequency (RF) front-end system and a method for reducing interference are provided. The RF front-end system includes a processing circuit, a first transceiver, an RF front-end circuit, and a first antenna. The RF front-end circuit includes a first switch circuit, a first filter circuit, and a second switch circuit. The first switch circuit and the second switch circuit respectively include first signal paths and second signal paths. The first filter circuit includes an all-pass circuit corresponding to a first frequency band and a first channel filter corresponding to a first frequency channel. The processing circuit executes an anti-interference process, including: switching to the all-pass circuit; executing a channel sounding process to determine usage statuses of a plurality of channels; executing an automatic channel selection process to select a target channel; and switching to the target channel, and controlling the first transceiver to perform signal transmission.

Abstract: An electronic device and an antenna module are provided. The electronic device includes a metal housing with a slot having an open end and a first upper edge portion located at an upper edge of the slot. The antenna module is arranged in the metal housing and includes a carrier board, a feeding element, a radiating element with a feeding portion connected to the feeding element, and a first parasitic radiating element arranged on the carrier board and connected or coupled to the first upper edge portion. A vertical projection of the radiating element on the metal housing at least partially overlaps the slot. One side of the first parasitic radiating element is near an edge of the open end. The radiating element is fed with a signal through the feeding element to generate a resonant mode and is coupled to the slot to excite another resonant mode.

Abstract: A remote controller is provided. The remote controller includes a motion sensing circuit and a wireless communication circuit electrically connected to the motion sensing circuit. The motion sensing circuit determines whether or not a motion of the remote controller complies with one of multiple reference motions. When the motion of the remote controller complies with one of the reference motions, the wireless communication circuit is switched from a sleep state to a working state. The wireless communication circuit that is in the working state determines whether or not a received signal strength indication between the remote controller and a controlled device is greater than or equal to a strength threshold. When the received signal strength indication is less than the strength threshold, the wireless communication circuit is switched from the working state to the sleep state.

Abstract: An electronic device having an antenna structure is disclosed. The antenna structure includes a substrate, a first radiating portion, a second radiating portion connected to the first radiating portion, a grounding portion, a shorting portion connected between the second radiating portion and the grounding portion, a third radiating portion, a first grounding extension portion connected between the third radiating portion and the grounding portion, and a first capacitive element coupled between a first section and a second section of the shorting portion. The coupling of the shorting portion, the first grounding extension portion, and the third radiating portion generates a first operating frequency band, and the coupling of the first radiating portion, the shorting portion, the first grounding extension portion, and the third radiating portion generates a second operating frequency band, which is higher than the first operating frequency band, through the matching of the first capacitive element.

Abstract: An antenna module and an electronic device are provided. The antenna module is disposed in a housing of the electronic device. The antenna module includes a first radiating element, a second radiating element, a grounding element, and a switching circuit. The first radiating element includes a first radiating portion and a second radiating portion that are connected with each other. The second radiating element includes a third radiating portion, a fourth radiating portion, a fifth radiating portion, and a feeding portion. The switching circuit is electrically connected between the grounding element and the first radiating element or between the grounding element and the feeding portion.

Abstract: A detection system and a detection method are provided. The detection method includes configuring a processing circuit to perform an initialization phase, which includes: executing a detection process to respectively accumulate numbers of times that objects are detected to be present in sub-areas, so as to generate initial count values; and configuring the processing circuit to perform a normal operation phase, which includes: executing the detection process to respectively accumulate numbers of times that the objects are detected to be present in the sub-areas, so as to generate current count values corresponding to the sub-areas; and comparing the current count value with the initial count value in a current sub-area of the sub-areas. In response to the current count value being greater than the initial count value plus a first count threshold, a new stationary object is determined to be present in the current sub-area.

Abstract: A light-emitting device includes a base, a shell with a through hole, a circuit board, a first covering body and a second covering body. The shell covers on the base along an installing direction to form an accommodating space. The circuit board is disposed in the accommodating space and includes a light-emitting element configured to emit a light beam to the through hole along a light-emitting direction. A separation distance is formed between the light-emitting element and the through hole. The light-emitting direction is perpendicular to the installing direction. The first covering body and the second covering body are respectively located at a first side and a second side of the circuit board. A covering space is formed by the first covering body and the second covering body and has an opening corresponding to the through hole. The light-emitting element is located in the covering space.

Abstract: A wireless communication device is provided. The wireless communication device includes a circuit substrate, an antenna cover, a first antenna array and a first power divider. The first antenna array is arranged between the circuit substrate and the antenna cover. The first antenna array includes two first antenna elements and two second antenna elements. The first antenna elements are disposed on a first surface of the circuit substrate. The second antenna elements are arranged on the antenna cover and correspond to the first antenna elements, respectively. Each of the second antenna elements and a corresponding one of the first antenna elements are separated from and coupled to each other. In response to the two first antenna elements being fed with a first signal provided by a signal source from the first power divider, the first antenna array is configured to generate a radiation pattern having a first polarization direction.

Abstract: A wireless communication method of a wireless communication device is disclosed, wherein the wireless communication method includes the steps of: establishing a link with a first access point, and obtaining a BSSID list of a plurality of access points of a self-organizing network from the first access point of the SON during a link process; determining at least one candidate access point from the plurality of access point according to the BSSID list; and selecting one of the at least one candidate access point to establish a link.

Abstract: An electronic device and an antenna module are provided. The electronic device includes a metal housing and the antenna module disposed. The metal housing has a slot, and the slot has an open end. The antenna module includes a carrier, a feeding element, a radiating element connected to the feeding element, and a grounding element. The radiating element is disposed on a first surface of the carrier. An orthogonal projection of the radiating element that is projected onto the metal housing at least partially overlaps with the slot. The grounding element includes a first grounding portion and a second grounding portion electrically connected to each other. The radiating element and the first grounding portion are spaced apart from each other by a first coupling gap, and the radiating element and the second grounding portion are spaced apart from each other by a second coupling gap.

Abstract: An antenna module and an electronic device including the antenna module are provided. The antenna module includes a radiating element, a first inductive element, a first capacitive element, a first feeding radiating element and a second feeding radiating element. The radiating element includes a first radiating branch, a second radiating branch and a third radiating branch, and the third radiating branch is connected between the first and second radiating branches. The first inductive element is connected between the second radiating branch and the third radiating branch. One end of the first capacitive element connected to the third radiating branch, and another end thereof is grounded. The first feeding radiation element is adjacent to the first radiating branch. The second feeding radiation element is adjacent to the second radiating branch. The first feeding radiation element and the first radiating branch are used to generate the first operating frequency band.

Abstract: An antenna structure and an electronic device are provided. The electronic device includes a housing and the antenna structure disposed therein. The antenna structure includes a grounding element, a feeding radiation element, a feeding element and a first grounding radiation element. The feeding radiation element includes a first radiating portion, a second radiating portion and a third radiating portion. The first radiating portion and the second radiating portion jointly surround the first grounding radiation element. The first radiating portion is spaced apart from and coupled with the first grounding radiation element to generate a first operating frequency band. The second radiating portion is spaced apart from and coupled with the first grounding radiation element to generate a second operating frequency band. The first operating frequency band is lower than the second operating frequency band.

Abstract: A backing up and recovering method of a file system is applied to a communication device. In the backing up and recovering method, a detecting step is performed to drive a first processing unit to detect whether the file system is damaged, and then generate a detection result. A transmitting step is performed to drive the first processing unit to transmit the detection result to a second processing unit. In response to the detection result being the file system is damaged, the second processing unit executes a system recovering step which recovers the file system according to a backup data that corresponds to the file system and is stored in a storage unit, and in response to the file system being not damaged, the second processing unit executes a backup confirming step which confirms whether the storage unit has the backup data.

Abstract: A slot cover and an integrated circuit access device having the slot cover are provided. The slot is used to be removably inserted into a slot of an electronic device and includes a frame, a positioning portion, an engaging portion, and at least one conductive elastic plate. The frame includes a center sheet, a first-side sheet configured to connect to an integrated circuit access module, and a second-side sheet. The first-side sheet and the second-side sheet are respectively located at a first side and a second side of the center sheet. The positioning portion and the engaging portion are respectively located above and below the center sheet. The at least one conductive elastic plate is disposed at the second-side sheet. When the slot cover is inserted in the slot of the electronic device, the center sheet blocks an opening of the slot.