Abstract: An anti-counterfeiting electronic device includes a function component assigned with an identification code ID and a processor. The processor generates a random code K1 and transmits the random code K1 to the function component; the function component encrypts the random code K1 and the identification code ID to generate a key ID1. The processor further obtains the key ID1 from the function component and decrypts the key ID1 to generate an identification code ID2, and determines whether the identification code ID2 is the same as the ID and executes the system login command if the identification code ID2 is the same as the identification code ID. An anti-counterfeiting method is also provided.

Abstract: An electronic reader system includes an electronic book and a stylus. The electronic book includes a battery and a cover. The stylus includes a pen body for writing on the electronic book to input data or commands into the electronic book, and an illumination member detachably attached to the pen body. The illumination member can be detached from the pen body and attached onto the electronic book, receiving electrical power from the book as it does so, to illuminate the electronic book.

Abstract: A battery charger includes a base, a plug formed on the base and electrically connected to an external power source, an interface formed on the base and electrically connecting an external device, a clamp formed on the base and fixing and electrically connecting a battery, and a controller embedded in the base and electrically connected to the plug, the clamp, and the interface. The controller is able to boost the battery voltage to a rated charging voltage of the external device and conducting the voltage to the interface to charge the external device.

Abstract: An electronic reader system includes an electronic book and a stylus. The electronic book includes a battery and a cover. The stylus includes a pen body for writing on the electronic book to input data or commands into the electronic book, and an illumination member detachably attached to the pen body. The illumination member can be detached from the pen body and attached onto the electronic book, receiving electrical power from the book as it does so, to illuminate the electronic book.

Abstract: An electronic device with power output function includes an interface for connecting with an external power supply or a small electronic device. The electronic device further includes a battery, a boost circuit, a switch circuit, and a charging circuit. When the external power supply is connected to the electronic device through a first cable, the switch circuit is closed to allow the external power supply to charge the battery through the first cable, the interface, the switch circuit, and the charging circuit. When the small electronic device is connected to the electronic device through a second cable, the boost circuit is enabled to boost the power voltage of the battery to allow the battery to charge the small electronic device through the boost circuit, the interface, and the second cable.

Abstract: A rechargeable battery checker for measuring the voltage of a rechargeable battery includes a PMIC, a charging switch, a voltage measuring switch, and a control circuit. The charging switch is connected to a charging terminal of the PMIC and the rechargeable battery, to control the PMIC to charge or pause charging the rechargeable battery. The voltage measuring switch is connected to a voltage measuring terminal of the PMIC and the rechargeable battery, to control the PMIC to measure or pause measuring the voltage of the rechargeable battery. The control circuit connects to the charging switch and the voltage measuring switch, and to output a modulated signal, and periodically change the signal to switch on/off the charging switch and the voltage measuring switch. The PMIC determines whether the rechargeable battery is fully charged according to the measured voltage of the rechargeable battery.

Abstract: An electronic device includes an input unit, a memory, a page flipping control unit, a buffer, a display, a processor and a switching unit. The input unit generates flipping commands in response to operations of a user. The memory stores a document. The processor displays the document in response to a document opening operation of the user, retrieves a predetermined page range of pages of the document from the memory, and stores the retrieved pages of the document in the buffer. The page flipping control unit receives the flipping commands, accesses the buffer, and flips pages on the display. The switching unit is connected to the memory, the display, and the buffer, and establishes a connection between the display, the buffer and the processor or establishes a connection between the display, the buffer, and the page flipping control unit under control of the processor.

Abstract: An electronic device with a sleep mode includes a CPU and a monitoring unit. The monitoring unit includes a testing module, a storage module, a comparing module, and a signal generating module. The CPU falls into standby mode when the electronic device is in the sleep mode. When the comparing module determines any one of one or more parameters of a battery which supplies power to the electronic device measured by the testing module is not within a corresponding predetermined range stored in the storage module, the signal generating module generates signals to awake the CPU. The awaked CPU executes protection operation to protect the electronic device. A related method is also provided.

Abstract: An anti-counterfeiting electronic device includes a function component assigned with an identification code ID and a processor. The processor generates a random code K1 and transmits the random code K1 to the function component; the function component encrypts the random code K1 and the identification code ID to generate a key ID1. The processor further obtains the key ID1 from the function component and decrypts the key ID1 to generate an identification code ID2, and determines whether the identification code ID2 is the same as the ID and executes the system login command if the identification code ID2 is the same as the identification code ID. An anti-counterfeiting method is also provided.

Abstract: An electronic device capable of controlling light-emitting diode (LED) bright is provided. The electronic device includes a signal producing unit for producing an operation signal; a Micro Control Unit (MCU) configured for outputting a normal brightness control signal according to the operation signal, and outputting a ultra brightness control signal according to the operation signal when an actual idle time of the electronic device reaches or exceeds a predetermined idle time; a pulse current control unit for controlling an output current according to the normal brightness control and the ultra brightness control signal; and a LED illuminator array for emitting light based on the output current. The MCU terminates the output of the ultra brightness control signal when an actual time of outputting the ultra brightness control signals reaches a predetermined time, and then the LED illuminator array resumes its normally bright. A control method is also provided.

Abstract: A stylus pen includes a penholder and a pen tip connected to the penholder. The pen tip includes a first pen tip and a second pen tip. A first contact surface and a second contact surface are respectively defined in one end of the first pen tip and the second pen tip, and both are substantially parallel to each other. A cavity is defined in the second pen tip, in which the first pen tip is slidably received. An elastic member is arranged in the cavity to provide an elastic force to the first pen tip to cause the first pen tip to extend out of the cavity. When the pen tip is pressed, the elastic member is compressed to allow the first pen tip to retract into the cavity, allowing the first contact surface and the second contact surface to be flush with each other.

Abstract: An electronic device capable of controlling light-emitting diode (LED) bright is provided. The electronic device includes a signal producing unit for producing an operation signal; a Micro Control Unit (MCU) configured for outputting a normal brightness control signal according to the operation signal, and outputting a ultra brightness control signal according to the operation signal when an actual idle time of the electronic device reaches or exceeds a predetermined idle time; a pulse current control unit for controlling an output current according to the normal brightness control and the ultra brightness control signal; and a LED illuminator array for emitting light based on the output current. The MCU terminates the output of the ultra brightness control signal when an actual time of outputting the ultra brightness control signals reaches a predetermined time, and then the LED illuminator array resumes its normally bright. A control method is also provided.

Abstract: A switching power supply with output ripple suppression includes a rectification circuit, a filtering circuit, a PFC, a transformer, a voltage stabilization circuit and a DC/DC converting circuit with feedback control. The DC/DC converting circuit includes a switching circuit, a PWM generator and a feedback circuit. The feedback circuit receiving feedback signals reflects an actual output voltage of the switching power supply and transmits the feedback signals to the PWM generator. The PWM generator produces PWM waves to control an on-off time ratio of the switching circuit by comparing the feedback signals with a reference signal that reflects a desired output voltage of the switching power supply. The switching circuit in turn controls the actual output voltage of the switching power supply.