Abstract: Screen rotation lock methods and systems are provided. First, an angle between a specific plane of an electronic device and an absolute horizontal plane is detected using at least one sensor, and it is determined whether the angle equals to a specific angle. When the angle equals to the specific angle, a screen auto-rotation function of the electronic device is disabled.

Abstract: A touch sensitive robot includes a body having a control panel, a touch sensor, a driver, and a controller. The touch sensor includes a first conductive belt, a second conductive belt, a power source, and a current sensor. The first conductive belt is wrapped on the body. The second conductive belt is wrapped around but spaced away from the first conductive belt. The power source and the current sensor are connected in series between the first conductive belt and the second conductive belt to form a closed circuit when a point of the second conductive belt is touched to contact the first conductive belt. The current sensor is for measuring the flow of the electrical current of the close loop. The controller is for controlling the driver to turn the body based upon the measurement of the current sensor to orient the control panel to the touch point.

Abstract: A simulated eye capable of being changed between a normal and a dilated state. The simulated eye includes an eyeball, a receiving member, at least one first electromagnets, at least one second electromagnets, and magnetic powder. The receiving member includes a translucent portion and a cylindrical portion. The at least one first electromagnets is received in the cylindrical portion and is adjacent to the translucent portion. The at least one second electromagnets is fixed to the cylindrical portion and engages with the translucent portion to close the cylindrical portion to form a closed receiving space. The magnetic powder is received in the closed receiving space. When the first and second electromagnet operates to move the magnetic powder toward and away from the translucent portion, a size of a color area of the translucent portion is changeable, whereby the simulated eye is changed between the normal state and the dilated state.

Abstract: An electronic device includes a first display, a second display, numerous of first and second guide rail members, a movable unit, and a driver unit. The first guide rail members are configured for guiding the first display to move between a first position and a second position, and the second guide rail members are configured for guiding the second display to move between a third position and a fourth position. The driver unit is configured for driving the movable unit to move the second display between the fourth position and a fifth position along a direction perpendicular to the sliding direction of the second display. When the first display is in the second position and the second display is in the fifth position, the first display and the second display are coplanar.

Abstract: Data transmission methods for handheld devices are provided. The data transmission method includes the steps of: receiving a gesture input; determining whether the gesture input matches a predetermined gesture; and if so, obtaining directional information corresponding to the gesture input and transmitting a file and the directional information to at least one electronic device such that display of a user interface of the at least one electronic device generates a display effect corresponding to the gesture according to the directional information.

Abstract: A charging system for charging a rechargeable battery in an electronic device includes a charging generator, a receiver and at least one magnetic core. The charging generator includes a first coil. The receiver includes a second coil magnetically coupled to the first coil, and a charging module electrically connecting the second coil to the rechargeable battery. The charging module is configured for charging the rechargeable battery using current induced in the second coil. The at least one magnetic core is sleeved by the first coil or by the second coil.

Abstract: A wireless charger authentication system includes an electronic device and a wireless charger. The electronic device includes an emitting module configured for producing an unauthenticated signal and a modulating module configured for modulating the unauthenticated signal into a high-frequency signal. The wireless charger includes a source signal produced by a power supply, a mixing module, an analyzing module, a comparing module and a triggering module. The mixing module is configured for mixing the high-frequency signal and the source signal to get a recognized signal. The analyzing module is configured for analyzing the parameters of the recognized signal. The comparing module predetermines a number of preset parameter values and is configured for comparing the parameters with the preset parameter values. The triggering module is configured for triggering the wireless charger to charge the electronic device if the parameters of the recognized signal are substantially equal to the preset parameter values.

Abstract: A keyboard includes a storage unit, a format generating unit, a character recognizing unit and an assigning unit. The storage unit is configured for storing a plurality of codes, each of the codes corresponds to a character assigned to a key on the keyboard. The format generating unit is configured for analyzing a digital picture reflecting a desired layout of keys on the keyboard and generating a location matrix of the desired layout according to the digital picture and the location matrix. The character recognizing unit is configured for recognizing the characters in the desired layout according to the digital picture and the location matrix. The assigning unit is configured for assigning the codes stored in the storage unit corresponding to the recognized characters to the corresponding keys, based upon the location matrix of the desired layout.

Abstract: An overload protection device includes a chassis, a motor, a pair of resilient members, and at least one of electrode. The motor is received in the chassis and includes a stator having a spiral groove defined on the stator and a pair of electrical conductive contacts attached on the stator, a rotor rotatably received in the stator at one end and protruding from the stator at another end. The resilient members are positioned between the chassis and two opposite ends of the motor. The at least one friction bump is attached on the inner side of the chassis and frictionally engaged in the spiral groove of the motor. The electrodes are separately attached on the inner side of the chassis and electrically coupled to electrical conductive contacts of the motor for supply power.

Abstract: A recharging system for a rechargeable battery in an electronic device includes a receiver and a power supply. The receiver is fixed to a surface of a casing of the electronic device. The receiver includes a receiving coil connected to the rechargeable battery. The receiving coil is a planar spiral coil substantially parallel to the surface of the casing of the electronic device. The power supply includes a base and a source coil attached to a surface of the base corresponding to the receiving coil, and the source coil is a planar spiral coil and capable of magnetically coupling to the receiving coil of the receiver.

Abstract: An electronic device includes a keypad, and a body having a touch screen. The keypad attached to the touch screen, includes an obverse surface and a reverse surface. A protrusion is protruded from the obverse surface and is configured to receive user input operation, an attaching member is mounted on the reverse surface and is configured to attach the keypad to the touch screen, a hollow portion is defined in the reserve surface corresponding to the protrusion, and a pressing member is mounted in the hollow portion and is configured for touching the touch screen when the protrusion is pressed.

Abstract: An energy recycling structure includes a primary portion, a secondary portion and a positioning shaft. The primary portion connects to a motor and includes a radially magnetic assembly including a number of strips having different magnetic strength. The secondary portion connects to a driven element and includes a coil electrically connecting to a peripheral device. The positioning shaft connects the primary portion and the secondary portion. A current flows in the coil when the coil cuts the magnetic lines of force of the magnetic assembly during rotation of the magnetic assembly.

Abstract: A power supply device includes a power input unit, a voltage converting unit, a communication unit, a control unit. The power input unit is used for receiving an external power source. The voltage converting unit is used for converting the voltage of the external power source to a predetermined voltage. The communication unit is used for obtaining working voltage information of a power receiving device connected to the power supply device. The control unit is used for controlling the voltage converting unit to output a working voltage indicated by the working voltage information to the power receiving device.

Abstract: A simulated eye is capable of being changed between a normal state and a dilated state. The simulated eye includes a circuit board, a controller electrically connected to the circuit board, a simulated iris electrically connected to the circuit board, and a simulated pupil. When the simulated iris is irradiated with light, the size of the colored area of the simulated iris is changeable by operationally powering on and powered off the simulated iris via the controller, whereby the simulated eye is changed between the normal state and the dilated state.

Abstract: A rotation structure rotates a rotatable segment via the attraction between a number of electromagnetic elements disposed on another rotatable segment around a screw and a magnet disposed on another rotatable segment. The rotated angle of the rotatable segment can be controlled by selectably magnetizing the electromagnetic elements in response to an instruction generated by pressing a button formed on another rotatable segment.

Abstract: The disclosure provides an electronic device having back-up power during battery replacement. The electronic device includes a body, a printed circuit board (PCB) mounted in the body, and an electrode assembly connected to the PCB. The body defines an accommodating space. The electrode assembly may rotate relative to the body and further comprises at least two groups of contacts aligned in different rotation orientations. The accommodating space is configured to accommodate a first battery. A first group of the at least two groups of contacts is engaged with the first battery, the at least two groups of contacts are connected in parallel to the PCB, when the first battery is being replaced by a second battery, the first group of contacts is kept engaged with the first battery, and a second group of the at least two groups of contacts is engaged with the second battery.

Abstract: Finger recognition methods and systems for use in an electronic device are provided. First, a contact corresponding to an input tool is detected via a touch-sensitive device, and a shape corresponding to the input tool is obtained according to the contact. It is determined whether the shape corresponding to the input tool conforms to a shape corresponding to the at least one finger recorded in a database. If so, the input tool is determined to be a finger.

Abstract: The portable electronic device includes a body, a bottom panel configured for supporting the body, at least two linear wheel assemblies assembled to the bottom panel in the body corresponding to the at least two first opening, and a directional wheel assembly assembled to the bottom panel in the body corresponding to the second opening. At least two first opening and a second opening defined in the bottom panel. Each linear wheel assembly and the directional wheel assembly include a wheel member and a driving member respectively. The driving member of each linear wheel assembly drives the wheel member of the corresponding linear wheel assembly to extend through the corresponding first opening and retract in the body. The driving member of the directional wheel assembly drives the wheel member of the directional wheel assembly to extend through the second opening and retract in the body and to rotate.

Abstract: An electronic device includes two batteries and a main body. The main body defines a sliding groove passing through two parallel surfaces of the main body. The sliding groove includes an upper surface, a lower surface parallel to the upper surface, a positive contact plate and a negative contact plate. The positive contact plate is positioned on the upper surface. The negative contact plate is positioned on the lower surface. During replacement of the battery, each positive power supply plate of the two batteries remaining in contact with the positive contact plate, and each negative power supply plate of the two batteries remaining in contact with the negative contact plate.

Abstract: A keyboard is configured for using the kinetic energy of the keystroke to generate electricity, the keyboard includes a key, a base, a resilient element connecting to the key and the base to restore the key after the key is pressed, a transmission device slidablely connected to the base, and a generator engaged with the transmission device. When the key is pressed, the transmission device is forced to slide on the base by the key and drive the generator to generate electricity.