Abstract: An electrical plug device includes a housing that is formed with two receptacles, a positioning member that is disposed in the housing and that includes a base, a fixed arm unit and a flexible arm unit, and a plug member that includes a pivot rod and two plug prongs receivable in the receptacles. The base, the fixed arm unit and the flexible arm unit cooperatively define an engaging groove. The pivot rod includes a rod body pivotally received in the engaging groove and a protrusion protruding from the rod body. The plug prongs are respectively secured in position when respectively protruding out of the receptacles via detachable engagement of the protrusion with and detachable abutment of the rod body against the flexible arm unit.

Abstract: A multi-loop antenna system includes a substrate having opposite first and second surfaces, a first loop antenna disposed on the first surface, and a second loop antenna disposed on one of the first and second surfaces. Each of the first and second loop antennas is operable in a corresponding one of first and second frequency bands, and includes a signal-feed portion and a grounding portion that are disposed adjacent to each other and that are disposed proximate to a respective one of peripheral edges of the substrate, and a radiator portion that has opposite ends connected electrically and respectively to the signal-feed and grounding portions and that cooperates therewith to form a loop.

Abstract: A light emitting diode chip includes a substrate, an epitaxial layer, two inclined plane units, and two electrode units. The substrate has top and bottom surfaces. The epitaxial layer is disposed on the top surface of the substrate. Each of the inclined plane units is inclined downwardly and outwardly from the epitaxial layer toward the bottom surface of the substrate, and includes an inclined sidewall formed on the epitaxial layer, and a substrate inclined wall formed on the substrate. Each of the electrode units includes an electrode disposed on the epitaxial layer, and a conductive portion extending from the electrode to the substrate inclined wall along corresponding one of the inclined plane units.

Abstract: The present invention relates to a light-guiding cover and an illumination device having the same. The light-guiding cover, for guiding light beams emitted by at least one light-emitting diode (LED), has a light-guiding portion and a light output portion. The light-guiding portion has a light input surface for transmitting light beams thereto and a connecting surface. The light output portion formed on one end of the light-guiding portion has an optical surface adjoining the connecting surface. The light-guiding cover is substantially symmetrical and defines a central axis. The light beams received by the light-guiding portion are guided by the light input surface for light reflection from one side to another side of the optical surface across the central axis to exit from the light-output portion. Thus, the illumination device having the light-guiding cover can illuminate in an omni-directional manner.

Abstract: The present disclosure provides an antenna array control method and an access point using the same. The antenna array control method may include the following steps. At least a packet is selected as at least a probing packet every probing period. One of the radiation patterns to be probed in an antenna array is used to transmit the probing packet. The packet error rates of the radiation patterns to be probed in the antenna array are calculated. The radiation pattern with a minimum packet error rate among all of the radiation patterns is selected as a best radiation pattern.

Abstract: A miniaturization image capturing module includes a substrate unit, an image capturing unit, a fixing glue unit, and a lens unit. The substrate unit includes a hollow substrate body, a plurality of top conductive pads, a plurality of bottom conductive pads, a plurality of embedded conductive traces. The hollow substrate body has at least one receiving space, and each embedded conductive trace is electrically connected between at least one of the top conductive pads and at least one of the bottom conductive pads. The image capturing unit includes at least one image capturing chip received in the receiving space and electrically connected to the substrate unit. The fixing glue unit includes a fixing glue disposed in the receiving space and fixed between the hollow substrate body and the image capturing chip. The lens unit is disposed on the top side of the hollow substrate body.

Abstract: The present invention relates to a key structure and a keyboard having the same. The key structure includes a seat, a conductive membrane disposed on the seat, a scissor assembly, a light source, and a cap. The seat has a plurality of protruding hooking portions. At least one conducting section is defined on the conductive membrane away from the central portion thereof. The collapsible scissor assembly is arranged between the seat and the cap. The key structure has at least one protrusion arranged above the corresponding conducting section. A rubber element having a hole formed on the top portion thereof is disposed centrally on the conductive membrane. The light source is arranged beneath and covered by the rubber element. The cap is disposed on the scissor assembly. The protrusion may be arranged on the side portion of the scissor assembly or the undersurface of the cap.

Abstract: A stepless rotating knob module includes a supporting frame, a rotating disk, a suspending assembly, an encoding switch and a transferring element. The support frame has a front wall, a top wall and a bottom wall. The front wall is formed with a through hole. The rotating disk is disposed between the top wall and the bottom wall and is partially exposed outside the through hole. The suspending assembly passes through the rotating disk and is fixed to the bottom wall, so that the rotating disk is rotatably mounted on the suspending screw. The encoding switch is fixed to the bottom wall of the supporting frame and has a rotating rod. The transferring element is fixedly disposed on the bottom of the rotating disk fixed to the bottom of the transferring element. The present disclosure also provides an electronic device having stepless rotating knob module.

Abstract: An electrical connection structure includes an insulating unit, a heat insulation unit, a conductive unit, a securing unit, and a filling unit. The insulating unit includes an insulating body having a receiving groove and a first securing hole. The heat insulation unit includes a heat insulation body received in the receiving groove. The heat insulation body has a heat insulation groove and a second securing hole. The conductive unit includes a conductive body disposed on the insulating body. The conductive body has a securing piece extended into the heat insulation groove. The securing piece has a third securing hole. The securing unit includes a securing element sequentially passing through the third, the second, and the first securing holes for fixing the securing piece in the heat insulation groove. The filling unit includes a filling material received in the heat insulation groove to cover and fix the securing element.

Abstract: A color changeable lighting keyboard includes a housing, a key assembly disposed on the housing, a lighting module disposed in the housing for lighting the key assembly, and a color changing mechanism. The color changing mechanism includes a movable element disposed in the housing and operable to perform a linear motion, and a plurality of colored pieces made of a light-permeable material and having different colors. The movable element is operable to move the colored pieces along a moving direction to align a selected one of the colored pieces with the lighting module.

Abstract: An antenna array control method is illustrated. At least a packet is selected as at least a probing packet every probing period. One radiation pattern in a probing radiation pattern set is used to transmit the probing packet. The radiation pattern with the minimum packet error rate among all radiation patterns is selected as a best radiation pattern. When the probing period expires, a candidate radiation pattern set is obtained according to current probabilities of the radiation patterns to be the best radiation pattern. Transfer probabilities of the radiation patterns in the candidate radiation pattern set are obtained. A target radiation pattern set is obtained according to the transfer probabilities, a motion variation and trend set, and the candidate radiation pattern set. The probing period and the probing radiation pattern set are adjusted according to whether the target radiation pattern set equals to the probing radiation pattern set.

Abstract: The present invention discloses a method and system for detecting hidden ghost keys on a keyboard matrix. The keyboard matrix is composed of multiple rows crossing with multiple lines that form multiple key-locating positions. The method comprises: selecting multiple preset keys from the matrix; detecting ghost keys among the matrix based on the selected preset keys; selecting multiple examining keys from the preset keys and the detected ghost keys, based on that at least one ghost key is included in the examining keys; and determining hidden ghost keys based on the examining keys. The system detects ghost keys among the matrix via a preset key selecting unit and a ghost key detecting unit, which selects multiple examining keys via an examining key selecting unit, and determines hidden ghost keys based on the examining keys through a hidden ghost keys detecting unit.

Abstract: A waterproof computer mouse includes an upper housing, a lower housing, a first waterproof ring, a second waterproof ring, a roller and a circuit board. The upper housing has an upper tubular portion downwardly extended therefrom in a through manner. The lower housing has a lower tubular portion upwardly extended therefrom through a bottom surface thereof. The upper tubular portion connects with the lower tubular portion to form a roller compartment therein. The first waterproof ring is disposed between a bottom edge of the upper housing and a top edge of the lower housing. The second waterproof ring is disposed between a bottom edge of the upper tubular portion and a top edge of the lower tubular portion. The roller is disposed in a rotatable manner in the roller compartment formed by the upper tubular portion and the lower tubular portion. The circuit board is disposed on the lower housing.

Abstract: A package structure includes a base unit, a pin unit and a housing unit. The base unit has a carrier member and a through hole penetrating through the carrier member, and at least one annular structure is formed in the through hole. The pin unit has a plurality of conductive pins disposed beside the carrier member. The housing unit has an annular housing encircling the carrier member to envelop one part thereof and connecting to the pin unit, and the annular housing is partially filled into the through hole to cover the annular structure. Therefore, the instant disclosure can increase the bonding force between the carrier member and the annular housing and retard external moisture to permeate through slits between the carrier member and the annular housing to intrude into the chip-mounting region, thus the reliability and the usage life are increased.

Abstract: A light-emitting diode device includes: a substrate; an upper metal film disposed on an upper surface of the substrate, and including a chip-mounting region and a plurality of conductive pad regions; two first light-emitting chips and two second light-emitting chips disposed on the chip-mounting region, the first and second light-emitting chips being disposed alternately, two of the first and second light-emitting chips being opposite to each other; a fluorescent layer coated on the first light-emitting chips; and a lens disposed on the substrate to cover the first and second light-emitting chips and the fluorescent layer.

Abstract: An antenna system includes: and antenna module and a system module. The antenna module includes a substrate, and a plurality of planar dipole antennas each including a short-circuit section, two first radiator sections operable in a first frequency band and connected to the short-circuit section, and two second radiator sections operable in a second frequency band and connected to the short-circuit section. The planar dipole antennas are arranged such that geometric centers thereof are respectively spaced apart from a center point bounded by the planar dipole antennas by a predetermined distance, such that each of the planar dipole antennas is spaced apart from an adjacent one of the planar dipole antennas by a predetermined minimum distance. The system module has a grounding plane that faces toward and that is spaced apart from and parallel to the substrate.

Abstract: An LED street light includes a central housing portion having two spaced-apart sidewalls, and two lateral housing portions disposed respectively on two opposite longitudinal sides of the central housing portion. Each lateral housing portion includes a first plate fixed to a respective sidewall and having a first plate opening, a second plate connected to the first plate, a curved plate connected to the second plate, and a reflection layer disposed on the curved plate and facing one of the sidewalls. The first plate and the curved plate of each lateral housing portion have bottom ends defining a bottom opening. A plurality of light-emitting modules are disposed on each sidewall. Each light-emitting module includes at least one LED element, and extends into one of the lateral housing portions through the first plate opening. The reflection layer reflects the light emitted by the LED element toward the bottom opening.

Abstract: An electric power converting device includes a rectifier, a flyback voltage converter and a non-isolated voltage regulator. The rectifier is for converting an alternating current (AC) signal received from an AC power source into a direct current (DC) signal. The flyback voltage converter is electrically connected to the rectifier for transforming voltage of the DC signal from the rectifier to output a regulated DC signal. The non-isolated voltage regulator is electrically connected to the flyback voltage converter for reducing a voltage ripple of the regulated DC signal from the flyback voltage converter and for outputting an output voltage to a load.

Abstract: A wireless audio-video (AV) transmission module is to be disposed in an AV source device. The AV source device includes an AV source unit for generating an AV signal. The wireless AV transmission module includes a video scaler unit and a wireless transmission unit. The video scaler unit is to be coupled electrically to the AV source unit, upscales a video signal of the AV signal from the AV source unit, and outputs an upscaled AV signal including the upscaled video signal. The wireless transmission unit is coupled electrically to the video scaler unit and wirelessly transmits the upscaled AV signal that includes the upscaled video signal.

Abstract: An illumination device having enhanced thermal dissipating capacity is provided. The illumination device includes a heat sink, an LED module, a cover, an LED driver, and a lamp base. The LED module is disposed at one end of the heat sink. The cover covers the LED module. The LED driver is in connection with the LED module, and includes a circuit board and at least one electrical contact member disposed on the circuit board. The lamp base is connected to the other end of the heat sink, and comprises an insulating unit, a first electrode, a second electrode and at least one contact port. The contact port is arranged on the lateral interior of the insulating unit, so that the electrical contact member of the LED driver may establish electrical connection with the lamp base.