Abstract: An electronic device includes a storage unit, a touch screen, and a processor. The storage unit stores a relationship table recording a mapping relationship between touch inputs and a number of commands. The touch screen includes a command input region for generating signals in response to user's handwritten touch input. The size of the command input region is smaller than the size of the touch screen. The processor includes an image processing module, an identification module, and a control module. The image processing module creates an image of touch input according to the generated signals. The identification module identifies the touch input of the user according to the generated signals, and retrieves a command associated with the touch input. The control module controls displaying the created image of the touch input on the command input region, and controls the electronic device to execute the retrieved command.

Abstract: An electronic device includes a storage unit, a touch input unit, a display unit, and a processor. The storage unit is used for storing decryption passwords. The touch input unit is configured to select a file for encryption/decryption, and to generate corresponding handwriting input signals in response to the handwritten signature of a user on the touch input unit. The processor includes a detecting module, a feature extracting module, and an encryption and decryption module. The detecting module detects the coordinates of the handwriting of the user's signature. The feature extracting module extracts the feature of the user's signature according to the detected coordinates, and stores the extracted feature of the user's signature. The encryption and decryption module uses the features of the user's signature as a password to encrypt or decrypt the selected file. An encryption method and a decryption method are also provided.

Abstract: A method for inserting images includes the following steps. Sense a touch trace of a user forming a closed loop having an enclosed region and generating a trigger signal if the touch trace forms a closed loop having an enclosed region. Sense handwritten touch input by the user within the enclosed region and generating signals associated with the user's handwritten touch input. Display the closed loop and the sensed handwritten touch input of the user. Determine whether the sensed handwritten touch input associates with an image inserting command in response to the trigger signal. Retrieve an image selected by the user from a storage unit, if the sensed handwritten touch input associates with an image inserting command. And display the selected image within the an enclosed region of the closed loop. An electronic device using the method is also provided.

Abstract: A method for verifying signatures includes the following steps. Generate corresponding input signals in response to user's operation for inputting a signature on an electronic device. Then detect coordinates of the handwriting of the user's signature. Extract the feature of the user's signature according to the detected coordinates. Generate a user identifier according to the extracted feature of the user's signature, and transmit the extracted feature of the user's signature and the generated user identifier to a server. Retrieve the feature of signature corresponding to the user identifier recording in the storage unit. And finally, compare the retrieved feature of signature with the received feature of the user's signature transmitted from the electronic device, to verify whether they are the same; and transmit the verified result to the electronic device. An electronic device and a signature verifying system are also provided.

Abstract: A touch control method used for an electronic device storing a relationship table recording a mapping relationship between handwritten touch input and a number of commands includes the following steps. Display an electronic file. Sense a touch trace of a user on the displayed electronic file and generating a trigger signal if the touch trace forms a closed loop having an enclosed region. Sense handwritten touch input by the user within the enclosed region and generate associated signals. Recognize a circled path having an enclosed region as input by the user according to the generated signals. Determine a command associated with the sensed handwritten touch input according to the relationship table in response to the trigger signal. Retrieve content of the displayed electronic file displayed within the enclosed region. And execute the retrieved command to the retrieved content. An electronic device using the method is also provided.

Abstract: An office device includes a storage unit, a touch input unit, and a processor. The touch input unit displays a handwriting input screen for allowing a user perform a touch input of a handwritten note thereon and generates signals in response to user's touch input. The processor includes a page flipping module, a storage module, an image processing module, a format conversion module, and a control module. The page flipping module detects a page flipping gesture. The storage module stores content of the handwritten note in the storage unit if the page flipping gesture is detected. The image processing module detects and recognizes touch input of a handwritten signature. The format conversion module combines the handwritten note and the handwritten signature into a file and converts the file into a predetermined format. The control module controls transmitting the converted file to an electronic device.

Abstract: A method for printing and faxing is used for an electronic device storing a relationship table. The relationship table records a mapping relationship between touch input and a plurality of commands. The method comprises the following steps. Display an electronic file selected by a user. Then generate signals in response to user's touch input on the displayed electronic file. Determine whether a command associated with the touch input of the user is a printing command or a fax command according to the generated signals and the relationship table. Retrieve circled content of the displayed electronic file circled by the user when the command associated with the touch input of the user is the printing command or the fax command; and send the circled content to a printer or send the circled content to a fax machine selected by the user. An electronic device using the method is also provided.

Abstract: A control circuit for an electrical load in an electronic device includes a voltage divider, a current measurement circuit, a variable-current-output switch and a comparison circuit, the voltage entering the load and the voltage (and thus current) exiting from the load being monitored and compared to a reference voltage, any difference causing the switch to dynamically adjust the level of current being supplied, to protect the load from sudden variations in power supply and ensure a stable and constant supply of power.

Abstract: An electronic device paired with an infrared remote control, includes a display screen having a display area, at least one infrared emitter, at least one infrared receiver, a prism and a processing unit. A prism is adjacent to the at least one infrared receiver for converging the infrared rays from the at least one infrared emitter and the infrared remote control to the at least one IR receiver. A processing unit is for activating and then deactivating the infrared emitters one after another, identifying operations of a user on the display area by analyzing the interception of the infrared rays emitted from each of the infrared emitters, identifying operations of a user according to the infrared signals from the infrared remote control and executing corresponding functions associated with the operations of the user.

Abstract: A remote control comprises a button generating control signals; a transmission unit configured to transmit the control signals to an electronic reader; a microprocessor unit configured to analyze an operation type according to the control signals and generate operation signals corresponding to the operation type to signal the electronic reader to flip page. A remote control method applied in a remote control of an electronic reader is also provided.

Abstract: An LED lighting device is provided. The LED lighting device includes a processing unit, a sensor, a MOSFET, and an LED. When the sensor detects a frequency or voltage fluctuation, the processing unit modulates the duty cycle of the MOSFET to reduce the energy consumption of the LED light device and improve the efficiency of luminance of the LED lighting device.

Abstract: A solar power system includes a solar panel for converting solar power into direct current power. The solar power system further includes an electric power detecting device, an elevator mechanism, an electric current control unit and a fixing mechanism. The elevator mechanism mechanically pulls a weight under a direct current motor and drives the direct current motor to rotate to generate electric power when the weigh falls. The electric current control unit outputs the direct current power to the direct current motor when the direct current power is equal to a predetermined value and stops outputting the direct current power when the weight is pulled to a predetermined. The fixing mechanism keeps the weight staying at the predetermined height and enables the weight to fall so that the elevator mechanism driving the direct current motor to rotate to generate electric power.

Abstract: An electronic device includes a first rechargeable battery, a solar cell mounted on the electronic device, a second rechargeable battery and a power management circuit. The power management circuit includes a control module, a DC/DC module, a switch and a power supply switching module. The DC/DC module is configured for converting the DC power generated by the solar cell from one voltage level to another, and activating and maintaining the activation of the control module. The switch is turned on by the control module when the control module is activated, causing the DC power from the DC/DC module to charge the second rechargeable battery. The power supply switching module is controlled by the control module to select the second rechargeable battery to power the electronic device if the voltage level of the rechargeable battery is lower than that of the second rechargeable battery.

Abstract: A solar power supply device includes a solar panel and a rechargeable battery. The solar panel is configured to collect and convert optical energy to electrical energy. The solar power supply device further includes an e-paper display unit, a charging connection connecting to a rechargeable device. A detecting unit detecting the charging state information of the rechargeable device via the charging connection, a light-operated unit detecting ambient illumination intensity, and a processing unit for controlling the e-paper display unit to display charging states information obtained from the detecting unit and the ambient illumination intensity detected by the light-operated unit.

Abstract: An electronic billboard includes a display unit, a storage unit, a distance detection unit, and a processing unit. The storage unit stores a relationship table recording a relation between viewer distances and zoom proportions of displayed content by the display unit. The distance detection unit detects viewer distances of viewers. The processing unit controls a display mode of the display unit according to a comparison result of a viewer distance with a predetermined distance.