Abstract: A mobile carrier includes a first frame, a directional wheel pivoted to the first frame, a second frame pivoted to the first frame, a steering adjustment mechanism connected to the second frame, and a steering wheel. The steering adjustment mechanism includes a first rotating element and a second rotating element coupled to the first rotating element. When a first rotating axis of the first rotating element is perpendicular to a plane, the first and the second rotating elements are locked to each other and are capable of rotating around the first rotating axis simultaneously. When a second rotating axis of the second rotating element is perpendicular to the plane, rotational degree of freedom of the first rotating element is restricted, and the second rotating element is capable of rotating around the second rotating axis relative to the first rotating element. A steering adjustment mechanism is also provided.

Abstract: A rotational positioning mechanism includes a base, a rotational shaft, a rotational plate, at least two first switches and a positioning assembly. The rotational shaft is pivoted to the base. The rotational plate is connected to the rotational shaft and is configured to rotate relative to the base along with the rotational shaft. The rotational plate has at least two first positioning portions. The two first switches are respectively disposed at the two first positioning portions. The positioning assembly is disposed at the base, and comprises a positioning component configured to form a structural interference with any one of the first positioning portions or remove the structural interference. After the positioning component forms the structural interference with any one of the first positioning portions, the positioning component abuts against the corresponding first switch, and the degree of rotational freedom of the rotational plate and the rotational shaft are restricted.

Abstract: A method for managing a parking lot is provided. The method includes: capturing, by a first video camera, an image of a vehicle; determining whether the image satisfies a condition; raising a first barrier when the image satisfies the condition; detecting whether there is only the one vehicle between the first barrier and a second barrier; and raising the second barrier to enable the vehicle to enter or leave the parking lot when detecting that there is only the one vehicle between the first barrier and the second barrier.

Abstract: A method for preventing a person from taking a dangerous selfie is executed by a mobile electronic apparatus including a multi-axis sensing device and an image acquisition device disposed on a surface of the mobile electronic apparatus. The method includes the following steps: using the image acquisition device operating in a shooting mode to capture an image of the person in a background; using the multi-axis sensing device to detect orientation information of the mobile electronic apparatus; determining whether the person is in a potentially dangerous environment according to the orientation information and the image; and enabling the image acquisition device to suspend or exit the shooting mode when the person is in the potentially dangerous environment.

Abstract: An energy management method capable of increasing stability of energy supply is applied to an energy storage device. The energy storage device includes a casing, an energy storage unit, an electronic latching component and a control unit. The energy storage unit is detachably disposed inside the casing. A constraining structure is disposed on an outer surface of the energy storage unit. The electronic latching component is disposed on the casing. The control unit is electrically connected to the energy storage unit and the electronic latching component. The control unit detects storage capacity of the energy storage unit, compares the storage capacity with a threshold, and determines whether to engage the electronic latching component with the constraining structure in accordance with a comparison result, so as to constrain a movement of the energy storage unit relative to the casing.

Abstract: An emergency call circuit for an electronic device includes a dial button, a wireless communication module, an emergency call button and a logic circuit. The wireless communication module is used for dialing an emergency call according to a dial signal generated by the dial button when the wireless communication device is shut down. The logic circuit is used for transmitting an emergency call detecting signal generated by the emergency call button to the wireless communication module and a power circuit of the electronic device, wherein the power circuit supplies a first power source to the logic circuit and the wireless communication module when the electronic device is shut down.

Abstract: A walking aid device including a moving body, a message receiving element, a positioning element, and a processor is provided. The message receiving element, the positioning element, and the processor are respectively disposed at the moving body, and the message receiving element and the positioning element are respectively electrically coupled to the processor. The message receiving element is configured to receive a message from a target, and the positioning element is configured to locate a position of the moving body. When the message from a target is received by the message receiving element, the processor determines an orientation of the target according to the message, and the positioning element locates the position of the moving body. The processor produces a position data according to the orientation of the target and the position of the moving body, and controls the moving body to move to where the target is located.

Abstract: An adjustable virtual reality device includes a first display module, a first image capturing unit, a second display module, a second image capturing unit, a lateral driving module, and a control unit. The first display module and the second display module display a first image and a second image, respectively. The first image capturing unit and the second image capturing unit detect two positions of two pupils of two eyeballs, respectively. The control unit calculates a pupil distance between the two pupils according to the two positions of the two pupils and controls the lateral driving module to drive the first display module and the second display module to move in a lateral direction, so that a lateral distance between the first display module and the second display module is corresponding to the pupil distance, which enhances comfort in use.

Abstract: An air-charging unmanned aerial vehicle set is provided, including a charging unmanned aerial vehicle and a functional unmanned aerial vehicle. The charging unmanned aerial vehicle includes a first unmanned aerial vehicle body, a plurality of first propeller units, a rotation stage, a first battery slot and a second battery slot. The first propeller units are disposed on the first unmanned aerial vehicle body. The rotation stage is disposed on the first unmanned aerial vehicle body. The first battery slot and the second battery slot are disposed on the rotation stage. The functional unmanned aerial vehicle includes a second unmanned aerial vehicle body, a plurality of second propeller units, a third battery slot and a battery cover. The second propeller units, the third battery slot and the battery cover are disposed on the second unmanned aerial vehicle body.

Abstract: A password power switch circuit for an electronic device includes a thermal energy conversion circuit and a programmable control chip. The thermal energy conversion circuit is used for generating a plurality of sensing temperatures. The programmable control chip is coupled to the thermal energy conversion circuit for storing a password and generating a power-on signal to a central processing device of the electronic device according to a plurality of locations corresponding to the plurality of sensing temperatures and a plurality of locations corresponding to the password. The central processing device determines at least one operation associated with the electronic device according to the power-on signal.

Abstract: A method for managing a parking lot is provided. The method includes: capturing, by a first video camera, an image of a vehicle; determining whether the image satisfies a condition; raising a first barrier when the image satisfies the condition; detecting whether there is only the one vehicle between the first barrier and a second barrier; and raising the second barrier to enable the vehicle to enter or leave the parking lot when detecting that there is only the one vehicle between the first barrier and the second barrier.

Abstract: This invention provides a wireless input device, including a primary battery set, a backup battery, an electricity generating device, an energy-storage/charging device, and a switching device. The primary battery set provides electricity to the wireless input device. The backup battery provides electricity to the wireless input device when the primary battery set does not have sufficient electricity. The electricity generating device generates electricity in response to clicking/pressing operations to the wireless input device. The energy-storage/charging device is coupled to the backup battery and the electricity generating device. The energy-storage/charging device stores the electricity generated by the electricity generating device and charges the backup battery when the stored electricity has reached a predetermined volume. The switching device is coupled to the primary battery set and the backup battery.

Abstract: A linkage mechanism including a base, a first linkage, a second linkage and a driving element is provided. The first linkage has a first end portion and a second end portion opposite to each other, and the first end portion is pivoted to the base. The second linkage has third end portion and a fourth end portion opposite to each other, wherein the third end portion is coupled to the base, and the second end portion and the fourth end portion are coupled with each other. The driving element is coupled to at least one of the second end portion and the fourth end portion, and is configured to drive the first linkage and the second linkage to move relative to the base. A walking aid device is also provided.

Abstract: A near eye display system including a display screen, a graphic processing unit, a lens group, a focal length adjustment device, an interpupillary distance adjustment device, a detection unit, and a control unit is provided. Positions of a left-eye image and a right-eye image to be displayed on the display screen may be adjusted based on lateral displacement amounts of a left-eye lens and a right-eye lens, such that centers of the left-eye image and the right-eye image are respectively aligned with centers of the left-eye lens and the right-eye lens. Sizes (magnification) of the left-eye image and the right-eye image to be displayed on the display screen may be adjusted based on longitudinal displacement amounts of the left-eye lens and the right-eye lens, such that sizes of a visual left-eye image and a visual right-eye image seen by a user are identical. Operation methods thereof are also provided.

Abstract: An operation method for an electronic apparatus is provided. The method includes: providing a setting function interface to be displayed on a display unit; detecting a motion trajectory operated on the display unit by a user using an input unit; performing an association setting to associate the motion trajectory with an operation function; making an original executing manner for executing the operation function unenforceable; and executing the corresponding operation function accordingly when an operation matching the motion trajectory is detected.

Abstract: A charging method for an electronic device comprising a battery for supplying power, the method comprises obtaining an allowable charging time and a remaining electricity information of the battery when the electronic device connects to a charger; determining a charging procedure according to the allowable charging time and the remaining electricity information; and performing the charging procedure to charge the battery with the charger; wherein the allowable charging time is a period of time that the electronic device is capable of being charged.

Abstract: A display device having a speaker module includes a display, an ultrasonic speaker and an adjustment module. The speaker module includes at least one first speaker module and at least one second speaker module. The first speaker module is disposed at the display and adapted to emit a first ultrasonic wave. The second speaker module is disposed at the display and adapted to emit a second ultrasonic wave. The first ultrasonic wave and the second ultrasonic wave are intersected to form an audible region. The adjustment module is adapted to control the first speaker module and the second speaker module to rotate relative to the display, so as to drive the audible region to target a user.

Abstract: A pivoting mechanism for an electronic device includes a pivot shaft, a first connecting member disposed on the pivot shaft for being connected with a support of the electronic device, a second connecting member disposed on the pivot shaft for connected with a main body of the electronic device, and a torque adjusting assembly. The torque adjusting assembly includes four sleeves and an elastic member through which the pivot shaft is disposed. Each of the sleeves includes at least one protrusion. The protrusion of one of the four sleeves is slidable relative to the protrusion of another sleeve for adjusting an amount of deformation of the elastic member. A portable electronic device including a main body, a support and the pivoting mechanism is provided.

Abstract: A method of locating peripheral device applied to an electronic device is disclosed. The electronic device is connected or electrically connected to a peripheral device. The method includes: obtaining a first location information via a locating unit; when the first connecting unit is connected to the second connecting unit, sending the first location information to the peripheral device; after the first connecting unit and the second connecting unit are separated, obtaining the first location information sent by the second transmitter via the first transmitter; obtaining a second location information via the locating unit; comparing the first location information and the second location information to determine the relative position of the electronic device and the peripheral device.

Abstract: A supporting stand includes a base and a bracket. The base has a sliding rail structure, and the sliding rail structure includes a first rail and a second rail. The bracket is slidably disposed on the sliding rail structure and adapted to slide along the first rail and the second rail. When the bracket slides along the first rail, the bracket moves upward or downward, and when the bracket slides along the second rail, a tilting angle of the bracket relative to the base is changed.