Abstract: A wearable electronic device includes a middle frame, two connecting sidewalls, a first metal sidewall, a first dielectric component and a first antenna layout trace circuit. The two connecting sidewalls are disposed at two opposite sides of the middle frame for connecting a wearable component. The first metal sidewall is disposed at the middle frame and located between the two connecting sidewalls. The first metal sidewall is connected to ground and includes a first slot. The first dielectric component is installed in the first slot, so that the first metal sidewall surrounds the first dielectric component to form a first closed ground structure. The first antenna layout trace circuit is installed on the first dielectric component. The first antenna layout trace circuit and the first closed ground structure associate a first resonate frequency.

Abstract: An input device includes a first body and a second body. When the first body is connected to the second body and the first body and the second body is disposed at a notebook computer, the first body and the second body are jointly used as a touchpad. When the first body is connected to the second body and both the first body and the second body are separated from the notebook computer, the first body and the second body are jointly used as a mouse. When the first body is separated from the second body and both the first body and the second body are separated from the notebook computer, the first body and the second body are respectively used as two independent remote controls. In addition, a notebook computer including the foregoing input device is also provided.

Abstract: A computer system and an interface operational method are provided. The interface operational method includes: receiving an input; determining whether the input conforms to a first operation, a second operation or not; and switching the current functional interface to another functional interface of a plurality of functional interfaces according to an arrangement order when the input conforms to the first operation, or selecting one message area of a plurality of message areas of the current functional interface when the input conforms to the second operation.

Abstract: An impeller includes a hub and a plurality of blade plates. The hub includes a hub body and a plurality of installation portions disposed on the hub body. Each blade plate includes a plurality of fan blades and a folding portion. The folding portion is connected to one end of each fan blade. The folding portions are respectively installed at the installation portions.

Abstract: A head up display system for a vehicle is provided, including an eye tracking device and a head up display device. The eye tracking device is configured to pre-locate an initial gaze position of a driver of the vehicle before the vehicle starts moving and to detect a gaze position of the driver in real time. The head up display device includes a projector and a processor. The processor is coupled to the eye tracking device and the projector. The processor compares the gaze position with the initial gaze position, and controls the projector to project a display image to a first projection position or a second projection position according to a comparison result, wherein the first projection position corresponds to the initial gaze position and the second projection position corresponds to the gaze position. A control method of a head up display system is also provided.

Abstract: An electronic device including a casing, at least one connector and a waterproof elastic module is provided. The casing includes at least one first hole. The at least one connector is disposed in the casing, the at least one connector penetrates the at least one first hole and is exposed out of the at least one first hole, and at least one gap exists between walls of the casing encircling the at least one first hole and the corresponding at least one connector. The waterproof elastic module has at least one second hole, the waterproof elastic module sleeves the at least one connector, the at least one connector is exposed out of the at least one second hole, the waterproof elastic module covers and wraps around the at least one connector, and the at least one gap is filled with the waterproof elastic module.

Abstract: A rotating assembly is provided and is adapted to be assembled on a foot stand. The rotating assembly includes a limit ring, a base, a spherical friction part, and a pressing module. The limit ring is adapted to be fixed on the foot stand. The base is movably assembled on the limit ring along an axis. The base and the limit ring form a space. The spherical friction part is rotatably disposed in the space between the limit ring and the base. The pressing module is adapted to be fixed on the foot stand. The pressing module is configured on one side of the base along the axis, and pushes the base to a direction of the limit ring to compress the space formed by the base and the limit ring, so that the spherical friction part is in contact with the limit ring and the base. The spherical friction part is temporarily maintained at a specific angle by friction between the spherical friction part and the limit ring and friction between the spherical friction part and the base.

Abstract: A method for correcting uniformity of a panel is provided. A display panel is set with four color patterns respectively, and respective raw data of the four color patterns are respectively measured by an optical instrument. Three primary color chromaticity variations are obtained based on the raw data of each of the four color patterns. A chromaticity uniformity table is obtained based on the chromaticity variations of three primary colors and chromaticity intensity. A proportional calculation is executed for the chromaticity uniformity table to obtain a luminance comparison table. A luminance uniformity table is obtained based on the chromaticity uniformity table, the luminance comparison table, and luminance intensity. The display panel adjusts an output signal based on the chromaticity uniformity table.

Abstract: A case includes a back cover, a housing, and a supporting component. The back cover is used to carry an electronic device. The housing is fixed on one side of the back cover opposite to the side carrying the electronic device. The housing includes an assembled portion. The supporting component is assembled on the assembled portion. The supporting component includes a ring-shaped support, a damping round tube, and an assembled cover. The ring-shaped support has a round shaft, the ring-shaped support rotates with respect to the assembled portion by using the assembled cover as a rotating shaft in a first axial direction, the ring-shaped support rotates with respect to the assembled cover by using the round shaft as a rotating shaft in a second axial direction, and the first axial direction is perpendicular to the second axial direction.

Abstract: A rotatable ball joint is provided. The rotatable ball joint is adapted to enable an object to be rotatably assembled on a foot stand, where the foot stand includes a fixed hole. The rotatable ball joint includes a friction part, a shapeshifting sphere, and an assembly part. The shapeshifting sphere is adapted to be compressed from a first state to a second state. A size of the shapeshifting sphere in the first state is greater than a size of the fixed hole, and a size of the shapeshifting sphere in the second state is less than the size of the fixed hole. The shapeshifting sphere is adapted to be disposed in the fixed hole. The shapeshifting sphere is connected to the assembly part. The object is adapted to be assembled on the assembly part. The friction part is configured on an outer surface of the shapeshifting sphere.

Abstract: A dual-band antenna module includes a substrate, a dual-band omnidirectional antenna, a low-frequency reflection module and a high-frequency reflection module. The dual-band omnidirectional antenna is disposed perpendicular to the substrate and is used for resonating to generate a first radio-frequency signal with a first frequency and a second radio-frequency signal with a second frequency. The low-frequency reflection module includes three low-frequency reflection units used for reflecting the first radio-frequency signal with the first frequency according to different low-frequency directional control signals. The high-frequency reflection module includes three high-frequency reflection units used for reflecting the second radio-frequency signal with the second frequency according to different high-frequency directional control signals.

Abstract: An electronic device and a work-frequency reducing method thereof are disclosed. The electronic device at least includes a case, a gravity sensor, a pressure sensor and a processing unit. The gravity sensor detects the gravity status of the electronic device and outputs a plurality of gravity detecting signals. The pressure sensor detects the pressure status of the bottom portion of the case and outputs a plurality of pressure detecting signals. The work-frequency reducing method includes the following steps: receiving the gravity detecting signals and judging whether the variation value of the gravity detecting signals is greater than a default gravity value or not; if yes, decreasing the working frequency of the processing unit; receiving the pressure detecting signals and judging whether the pressure detecting signals are greater than a default pressure value or not; and if no, restoring the working frequency of the processing unit.

Abstract: A method for correcting an angle sensor is applied to a step motor including an angle sensor, where the angle sensor rotates with the step motor, and the method for correcting an angle sensor includes the following steps: rotating the step motor by a preset angle to a first position; reading a first voltage of the angle sensor when the angle sensor is rotated to the first position; determining whether the first voltage deviates from a preset voltage curve; if yes, recording a first offset of the first voltage relative to the preset voltage curve; and compensating for a sensing angle of the angle sensor according to the first offset. A device for correcting an angle sensor is further provided.

Abstract: A test cable and a test method using the same are provided. The test cable includes a universal serial bus (USB) connector, a test terminal connector and a switch circuit. The USB connector is coupled to an electronic device and has a first pair of data pins and a second pair of data pins. The test terminal connector is coupled to a test fixture and has a pair of test data pins and a first control pin, and the test fixture is used for outputting a first control signal to the first control pin. The switch circuit is coupled to the first pair and second pair of data pins, the pair of test data pins and the first control pin, and couples the pair of test data pins to the first pair or second pair of data pins according to the first control signal.

Abstract: The present disclosure is a heat sink used for an electronic component. The heat sink includes a shell body, a fan, and a thermally-conductive strip. The thermally-conductive strip abuts against the shell body. The shell body has an internal space and a side wall, and a channel is formed in the side wall of the shell body for a coolant fluid to flow. At two ends of the channel, a coolant fluid inlet and a coolant fluid outlet are respectively formed on an outer wall surface of the side wall. In this way, when flowing through the shell body, the coolant fluid brings heat of the shell body away. Therefore, heat dissipation efficiency can be substantially increased.

Abstract: A locking mechanism includes a first shell, a second shell, a waterproof ring and a locking component. The first shell has a first carrying surface, a second carrying surface and an open hole. The second shell includes a fixing hole recessed in a third carrying surface. A diameter of the fixing hole is less than that of the open hole. The waterproof ring is clamped between the second and the third carrying surface. The locking component penetrates through the open hole, the waterproof ring and the fixing hole so as to be locked to the second shell. The locking component has a first and a second abutting surface. The first abutting surface abuts against the first carrying surface. The second abutting surface passes through the open hole to abut against the third carrying surface, so that the waterproof ring is pressed between the second and the third carrying surface.

Abstract: A driving circuit and an electronic apparatus having the same are provided. The electronic apparatus includes a load circuit and the driving circuit. The driving circuit is coupled to the load circuit. The driving circuit includes a voltage-divider circuit and a converting circuit. The voltage-divider circuit is configured to receive N control signals and divides voltages of the N control signals to generate a first voltage, wherein N is an integer greater than or equal to two. The converting circuit is coupled to the voltage-divider circuit to receive the first voltage, converts the first voltage into a driving voltage, and drives the load circuit according to the driving voltage.

Abstract: The present disclosure discloses a portable electronic device, comprising a first display panel, a second display panel and a keyboard. The second display panel is pivotally connected to the first display panel. The second display panel comprises a display screen and at least one guide magnet arranged below the display screen. The keyboard is detachably arranged above the display screen of the second display panel. The keyboard comprises at least one magnetic element. The keyboard can be controlled to move relative to the display screen along a moving direction by means of the magnetic attraction force between the at least one magnetic element and the at least one guide magnet, wherein the moving direction is perpendicular to a side edge of the second display panel pivotally connected to the first display panel.

Abstract: A communication device updating system includes a network switch, a plurality of first devices, and a second device. Each of the plurality of first devices is communicatively coupled to the network switch. The second device is communicatively coupled to the network switch, and is configured to store a communication device firmware file, wherein the second device multicasts the communication device firmware file to each of the plurality of first devices through the network switch, and each of the plurality of first devices is updated according to the received communication device firmware file.

Abstract: An antenna structure including a grounding portion, a feeding portion, a first radiating portion, a second radiating portion, and a third radiating portion is provided. The first radiating portion is connected to the feeding portion, wherein the first radiating portion is adapted to generate a low-frequency resonant mode. The second radiating portion is connected to the feeding portion, wherein a first gap is formed between the first radiating portion and the second radiating portion, and the second radiating portion is adapted to generate a first high-frequency resonant mode. The third radiating portion is connected to the feeding portion, wherein a second gap is formed between the third radiating portion and the grounding portion, and the third radiating portion is adapted to generate a second high-frequency resonant mode. In addition, an electronic device including the antenna structure is also provided.