Abstract: The present invention relates to a video signal processing method and a video signal processing apparatus. The video signal processing apparatus receives a picture datum, which includes M×N pixel data, wherein a scan orientation of the pixel data includes M pixel data. The video signal processing apparatus includes a horizontal scaling unit and a timing control unit. The horizontal scaling unit scales the pixel data of the scan orientation of the picture datum to obtain P pixel data. The timing control unit transfers the P pixel data to a scan-line signal of the video signal, determines the number of times of outputting the scan-line signal according to a ratio of Q to N, sequentially outputs the scan-line signal according to the number of times of outputting the scan-line signal and thus outputs the video signal with a resolution of P×Q.

Abstract: Audio system and related method integrated with ultrasound communication functionality are provided. A communication transmitting device of proposed invention modulates a communication signal of communication functionality to a high-frequency sound and transmits the high-frequency sound by an ordinary audio transmitter. A communication receiving device of proposed invention receives the high-frequency sound with an ordinary audio receiver and demodulates it to retrieve the communication signal, and then the communication device can use the communication signal. The proposed audio sound transmitter/receiver can be implemented using low-cost audio speaker/microphone, such that a cost for implementing communication functionality can be reduced.

Abstract: The present invention relates to audio amplifier and a method for protecting the audio amplifier. The audio amplifier includes a pre-amp circuit, an output stage power amplifier, a temperature detector and a gain adjusting circuit. The pre-amp circuit receives an audio signal for amplifying the audio signal to generate an amplified audio signal. The output stage power amplifier receives the amplified audio signal to drive a load. The temperature detector is used for detecting a temperature of the output stage power amplifier to output a temperature signal. The gain adjusting circuit adjusts amplitude of the amplified audio signal of the pre-amp circuit according to the temperature signal.

Abstract: The present invention relates to a multipurpose infrared apparatus and a display apparatus thereof. The display apparatus includes a display panel and the multipurpose infrared apparatus, wherein the multipurpose infrared apparatus includes an infrared light emitted diode (hereinafter refer to as, IR LED) transmitter, an IR receiver and a microcontroller. The IR LED transmitter is used for transmitting infrared ray. The IR receiver is used for receiving infrared ray. The microcontroller utilizes the Time-Division Multiplexing method to control the IR LED transmitter and receiver to achieve the distance detecting, the remote control signal receiving and an ambient light detecting.

Abstract: An audible post-it system includes a post-it note printed with an index and an optical reading and recording device having an optical module, a switch, a storage device, an audio recording device, an audio playing device and a processor. The optical reading and recording device reads an image of the index. When the optical reading and recording device is at a recoding state, the processor receives the image of the index and obtains the index, then receives a digital audio outputted by the audio recording device to match the index with the digital audio, and stores the digital audio based on the index. When the optical reading and recording device is at a playing state, the processor receives the image of an index and retrieves the index, then reads a digital audio based on the index, and sends the digital audio to the audio playing device for playing.

Abstract: In a custom code setting system of a remote control chip, M keyboard input/output pins are connected to an external keyboard to receive the input of the external keyboard. A first pin is connected to one terminal of an external resistor, while the other terminal of the external resistor is connected to ground, wherein there are N resistance values selectable for the external resistor. A resistance detecting unit is connected to the first resistor to detect the resistance of the first resistor. A second pin is connected to one of the M keyboard input/output pins for setting a custom code. When power on reset occurs, a control logic receives the resistance from the resistance detecting unit, and one of the N×M custom codes is determined according to connection between the second pin and one of the M keyboard input/output pins.

Abstract: In step S508, it is determined whether or not a power low signal SRC_LOSS outputted from the data latch is change. Generally Speaking, the power low signal SRC_LOSS outputted from the data latch would be changed according to the state of the power voltage of the power input terminal. When the power voltage of the power input terminal is charged/discharged to the common voltage, the power low signal SRC_LOSS outputted from the data latch may be changed from the logical high voltage to the logical low voltage or from the original logical low voltage to the logical high voltage. Since the mention above is design of selectiveness, the detailed description is omitted. When the determination is positive, the step S509 is performed. When the determination is negative, the step S511 is performed to re-detect.

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: 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 method for increasing speed in virtual 3D application is applied to a game console, which includes a processor and is used for outputting scan lines of a frame. The method includes the steps of: providing registers corresponding to the scan lines; and interrupting the processor in a vertical blank period. The step of interrupting includes: calculating 3D operating parameters corresponding to the scan lines according to an operation provided to the game console by a user; storing the 3D operating parameters into the registers; and calculating outputted scan lines according to the scan lines and the corresponding 3D operating parameters. Since the registers respectively corresponding to the scan lines are provided, the number of times of interrupting the processor can be decreased and the efficiency can be greatly increased.

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: A capacitive sensor includes a sensing electrode, control unit, first and second comparator wherein the sensing electrode includes a first and a second conductors. A positive input terminal of the first comparator and a negative input terminal of the second comparator are coupled to the first conductor. A positive input terminal of the second comparator and a negative input terminal of the first comparator are coupled to the second conductor. The first and second comparators respectively output first and second comparing signals according to voltages of the positive and the negative terminals thereof. The control unit charges the first conductor and discharges the second conductor when the first and second comparing signals correspondingly are in first and second logic states. The control unit is operable on the contrary when the first and second comparing signals are in opposition to the abovementioned description.

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: A method for measuring a speed of a conductor slipping through a capacitive sensor. The method includes: sampling a capacitance of a sensing electrode at each preset time; determining a first threshold value and a second threshold value according to a peak value of the capacitance when the capacitance achieves the peak value; and determining the speed of the conductor slipping through the capacitive sensor by the first period and the second period, wherein the first period is defined as a period of time ranging from the time when the capacitance reaches the first threshold value to the time when the capacitance reaches the peak value and the second period is defined as a period of time ranging from the time when the capacitance reaches the peak value to the time when the capacitance reaches the second threshold value.

Abstract: The invention relates to methods for adaptive clock reconstruction and decoding in audio frequency. The method includes the steps of: receiving a modulated signal, wherein the modulated signal is modulated by RC-FSK (Return to Carrier Frequency Shifting Keying); performing a spectrum analysis to the modulated signal to obtain a plurality of frequency envelopes; storing the frequency envelopes; searching the peak values of the frequency envelopes and the time points corresponding to the peak values to modify an estimated period; and generating a clock period for the RC-FSK demodulation and a clock phase for the RC-FSK demodulation according to the estimated period.

Abstract: A method for measuring a velocity of a conductor pressing on a capacitive sensor. The method includes: sampling a capacitance of a sensing electrode at each preset time; providing a threshold value; and determining the velocity of the conductor pressing on the capacitive sensor according to a specific period, wherein the specific period is defined as a period of time ranging from the time when the capacitance reaches the threshold value to the time when the capacitance reaches a peak value.

Abstract: The invention relates to a method for coding a two dimensional (2D) optical identification (OID) with the same gray level and a printing product thereof. The printing product includes a 2D-OID, which includes a positioning block and a plurality of data coding blocks. The positioning block has a plurality of specific patterns arranged as an N×M matrix, wherein the specific patterns along a first edge thereof and the specific patterns along a second edge thereof are filled. The data coding blocks are disposed around the positioning block and include the specific patterns arranged as the N×M matrix, wherein the specific pattern in a center of the data coding blocks is filled. A specific number of the remaining specific patterns in each data coding block are filled to serve as a code for representation of data.

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: 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: 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.