Abstract:
An infrared positioning apparatus comprises a plurality of infrared diodes, a plurality of amplifying units, a plurality of converting units and a positioning unit. The plurality of infrared diodes is configured to detect at least one infrared signal. The plurality of amplifying units are configured to amplify the at least one infrared signal for obtaining at least one amplified signal. The plurality of converting units are configured to convert the at least one amplified signal for obtaining at least one strength value of the at least one amplified signal. The positioning unit is configured to obtain the emitting direction of the at least one infrared signal in accordance with the at least one strength value of the at least one amplified signal.
Abstract:
The present invention relates to a method for increasing operation speed in virtual three dimensional (3D) application and an operational method thereof. The method includes the steps of: providing a display frame, which includes a plurality of scan lines; dividing the display frame into at least one first area and a second area; providing a plurality of virtual 3D parameters according to the scan lines; and truncating a preset number of least significant bits (LSBs) of the virtual 3D parameters corresponding to the scan lines in the first area.
Abstract:
An infrared positioning apparatus comprises a plurality of infrared diodes, a plurality of amplifying units, a plurality of converting units and a positioning unit. The plurality of infrared diodes is configured to detect at least one infrared signal. The plurality of amplifying units are configured to amplify the at least one infrared signal for obtaining at least one amplified signal. The plurality of converting units are configured to convert the at least one amplified signal for obtaining at least one strength value of the at least one amplified signal. The positioning unit is configured to obtain the emitting direction of the at least one infrared signal in accordance with the at least one strength value of the at least one amplified signal.
Abstract:
The present invention relates to a low cost analog to digital converter (ADC) and a method for converting an analog signal to a digital signal. The method includes the steps of: outputting a pulse modulation signal according to a digital value; performing a low-pass filtering to the pulse modulation signal to obtain a pulse averaged voltage; mixing a first proportion of the pulse averaged voltage and a second proportion of a voltage under test to obtain a composite voltage; comparing the composite voltage with a threshold voltage and adjusting the first digital value such that the composite voltage approaches the threshold voltage; and performing a complement operation to the digital value to obtain an analog to digital value corresponding to the voltage under test.
Abstract:
The invention relates to an image processing method, and processing methods for a digital photo frame and an interactive image process. The image processing method includes the steps of: providing an image; dividing the image into a plurality of blocks; and storing the blocks into a memory with the blocks respectively serving as a plurality of independent images.
Abstract:
In a capacitive sensor, a sensing electrode is positively charged, the sensing electrode and a sensing capacitor are charge-balanced, the sensing electrode is negatively charged, and then the sensing electrode and the sensing capacitor are again charge-balanced. The sensing electrode is positively and negatively charged in the same period when the capacitive sensor is sensed. So, the invention can not only effectively improve the high-frequency external interference but also effectively resist the interference when an external direct current electrical field approaches.
Abstract:
The present invention relates to a touch sensor with electrostatic immunity and sensing method thereof. The touch sensor includes a sensing electrode, a discharge element, a sensing-controlling terminal and an input-output (I/O) control terminal, wherein the discharge element is coupled between the sensing-controlling terminal and the I/O control terminal and the sensing electrode is coupled to the sensing-controlling terminal. The essence of the present invention is using charge-discharge through the sensing-controlling terminal and the I/O control terminal for sensing whether a conductor contacts the sensing electrode. There are corresponding compensations no matter an electrostatic charge on the sensing electrode is positive charge or negative charge. Therefore, the influence of electrostatic charge can be eliminated.
Abstract:
A circuit for eliminating pop sounds at power on and off by a moderate waveform, which includes a switch, a feedback network, an operational amplifier and an output network. When power-on, a first input terminal of the switch is connected to a low voltage, and an output terminal of the output network provides an operating DC bias which is gradually increased. When power-off, the first input terminal of the switch is connected to a reference voltage, and the output terminal of the output network provides an operating DC bias which is gradually reduced.
Abstract:
A radio frequency identification integrated circuit for reducing pin counts and an RFID providing method thereof are provided in the present invention. The radio frequency identification integrated circuit includes a first IO pin, a second IO pin and a third IO pin. The method includes determining whether the coil is coupled to the first IO pin, the second IO pin and the third IO pin when the RFID IC is enabled; and determining the identification according to the voltage status of the non-coupled pin and the pins coupled to the coil.
Abstract:
An integrated communication and capacitive sensing circuit and an interactive system using the same are provided in the present invention. The integrated communication and capacitive sensing circuit includes a microprocessor, a sensing electrode and a resonant circuit. The microprocessor includes a first input/output (I/O) pin and a second I/O pin. The sensing electrode is coupled to the first I/O pin of the microprocessor. The input terminal of the resonant circuit is coupled to the second I/O pin of the microprocessor, and the output terminal of the resonant circuit is coupled to the sensing electrode. When sensing the capacitance is performed, the first I/O pin of the microprocessor detects the charging/discharging state of the sensing electrode to determine the capacitive variation. When a data output is performed, the first I/O pin of the microprocessor is set to high impedance, and the second I/O pin of the microprocessor outputs or does not output a high frequency carrier according to a transmission data, wherein the resonant circuit amplifies the amplitude of the high frequency carrier.