Abstract: A capacitive pressure sensing element includes a main body, a power supply with a positive electrode and a negative electrode connected to a first electrode and a second electrode mounted on the main body, a first sheet metal electrically connected to the first electrode, a second sheet metal, and a spring element connected between the second electrode and the second sheet metal. When the spring element is uncompressed, the second sheet metal is misaligned relative to the first sheet metal. When the spring element is compressed, the second sheet metal is move towards the first end to a position with a reduced misalignment degree relative to the first sheet metal, thereby the portion of the first sheet metal squarely opposing the second sheet metal is increased to generate an inductive capacitance between the first sheet metal and the second sheet metal. A related stylus is also provided.

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: A configuration method includes the following steps: Controlling the display unit to display visual information, determining whether the visual information includes one or more touch icons, and determining if the display areas are displaying the touch icons, if yes, determining which infrared lines correspond to the display areas. Then determining which infrared emitters and which infrared receivers form the infrared lines, and turning on the determined infrared emitters and infrared receivers, finally, turning off the other infrared emitters and infrared receivers. The invention also provides an electronic device with an infrared touch panel.

Abstract: A luminance adjusting circuit includes an LED module, a switch module and a processing unit. A table equating luminance levels and average current values is pre-stored. The processing unit includes a judging and executing module and a signal generating module. The judging and executing module achieves a desired luminance level according to trigger signals generated by a button. The signal generating module produces timing signals to turn on and turn off the switch module periodically, thereby achieving an average current value to adjust the luminance level of the LED module to the desired level.

Abstract: A luminance adjusting circuit includes an LED module, a switch module and a processing unit. A table equating luminance levels and average current values is pre-stored. The processing unit includes a judging and executing module and a signal generating module. The judging and executing module achieves a desired luminance level according to trigger signals generated by a button. The signal generating module produces timing signals to turn on and turn off the switch module periodically, thereby achieving an average current value to adjust the luminance level of the LED module to the desired level.

Abstract: An electronic device with infrared touch input function is provided. The electronic device includes a display unit defining an signal display area; an infrared input device including a circuit board having two pairs of oppositely disposed sides defining an open area corresponding in size and shape to the signal display area, at least one light emitting device positioned on the circuit board, configured for emitting infrared light; at least one light detecting device positioned on the circuit board, configured for detecting infrared light emitted; a micro-processing unit configured for controlling the at least one light emitting device to emit infrared light, detecting infrared light paths obstructed via the light detecting devices, sending information of the obstructed infrared light paths to a central processing unit(CPU); and the CPU configured for performing functions according to the information of the obstructed infrared light paths.

Abstract: An electronic book reading device includes a housing, an airflow sensor and a controller. The airflow sensor includes a turbine, a shaft fixed to the turbine and a tachometer. The turbine is configured for sensing an airflow and rotating with and about the shaft. The tachometer is connected to the shaft and configured for detecting a rotation speed of the turbine. The controller is configured for determining whether the detected rotation speed of the turbine falls in a predetermined range, and controlling the electronic book reading device to execute a predetermined operation if the detected rotation speed of the turbine falls in the predetermined range.

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 infrared touch display apparatus, includes a touch screen, a first circuit board arranged above the screen, a second circuit board arranged at the left side of the screen, a third circuit board arranged below the screen, a fourth circuit board arranged at the right side of the screen, emitters E1˜En and E?1˜E?m evenly spaced and fixed on the first circuit board and the second circuit board, and receivers R1˜Rn and R?1˜R?m evenly spaced and fixed on the third circuit board and the fourth circuit board, to receive the infrared light emitted from the emitters, wherein n and m are natural numbers greater than one. Infrared light emitted by each emitters E1˜En is transmitted along a first direction and a second direction, infrared light emitted by each emitters E?1˜E?m is transmitted along a third direction and the second direction, the first direction is substantially perpendicular to the third direction.

Abstract: A configuration method includes the following steps: Controlling the display unit to display visual information, determining whether the visual information includes one or more touch icons, and determining if the display areas are displaying the touch icons, if yes, determining which infrared lines correspond to the display areas. Then determining which infrared emitters and which infrared receivers form the infrared lines, and turning on the determined infrared emitters and infrared receivers, finally, turning off the other infrared emitters and infrared receivers. The invention also provides an electronic device with an infrared touch panel.

Abstract: A computer mouse includes a housing and two wheels that are capable of rolling on a supporting surface. A first pair of light sources and a second pair of light sources are arranged at one side of the two wheels, respectively. A light sensor changes from a first state to a second state after receiving light, and changes from the second state to the first state after the light is blocked. A driving module is used for successively turning on the first pair of light sources and the second pair of light sources in a first frequency. A scanning module is used for scanning the light sensor in a second frequency, to obtain states of the light sensor. A controlling module is used for generating data representative of movement of the housing according to the states of the light sensor.

Abstract: An electronic device with infrared touch input function is provided. The electronic device includes a display unit defining an signal display area; an infrared input device including a circuit board having two pairs of oppositely disposed sides defining an open area corresponding in size and shape to the signal display area, at least one light emitting device positioned on the circuit board, configured for emitting infrared light; at least one light detecting device positioned on the circuit board, configured for detecting infrared light emitted; a micro-processing unit configured for controlling the at least one light emitting device to emit infrared light, detecting infrared light paths obstructed via the light detecting devices, sending information of the obstructed infrared light paths to a central processing unit(CPU); and the CPU configured for performing functions according to the information of the obstructed infrared light paths.

Abstract: An electronic device with infrared touch input function is provided. The electronic device includes a display unit defining an information display area; an infrared input device including a circuit board having two pairs of oppositely disposed sides defining an open area corresponding in size and shape to the information display area, at least one light emitting device; a linear array of light detecting devices faced to light emitting devices, connected together via first resistances respectively to form a node; an analog/digital (A/D) converter configured to convert a voltage across the node into digital values; a micro-processing unit for determining an infrared light path being obstructed; and the CPU configured for controlling the display unit displaying a plurality of menu options, determining the menu option being touched; and performing functions corresponding to the menu option.

Abstract: An electronic device with infrared touch input function is provided. The electronic device includes a display unit defining an information display area; an infrared input device comprising a circuit board having two pairs of oppositely disposed sides defining an open area corresponding in size and shape to the information display area, at least one light emitting device positioned on one corner of the circuit board; a linear array of light detecting devices positioned on one side or two adjacent sides of the circuit board and faced to light emitting devices; and a micro-processing unit configured for determining whether the light detecting device receives the infrared light emitted by the light emitting device; and a central processing unit(CPU) configured for controlling the display unit displaying a plurality of menu options, determining whether the menu option is touched; and performing functions corresponding to the menu option when the menu option is touched.

Abstract: An electronic device with infrared touch input function is provided. The electronic device includes a display unit including two pairs of oppositely disposed sides defining an information display area; an infrared input device including a circuit board having two pairs of oppositely disposed sides defining an open area corresponding in size and shape to the information display area, a linear array of light emitting devices positioned on one side or two adjacent sides of the circuit board, configured for emitting infrared light; a micro-processing unit configured for generating control signals to control a corresponding light emitting device to emit infrared light, and determining whether the light detecting device receives the infrared light; and a central processing unit configured for controlling the display unit displaying a plurality of menu options determining whether the menu option is touched; and performing functions corresponding to the menu option when the menu option is touched.