Abstract: A spiral inductor with high quality factor for an integrated circuit (IC) is disclosed, in which the metal layers arranged under a spiral inductor layer are parallel-connected to each other by the use of interconnects so as to increase the thickness of the metal layer and thus effectively reduce the parasitic resistance of the spiral inductor. In a preferred aspect, the parasitic resistance of the spiral inductor is reduced by increasing the interconnects, used for connecting the spiral inductor layer and the metal layer arranged underneath the same. In another preferred aspect, an interconnect is formed under the spiral inductor layer while enabling the same to be disconnected from the metal layer directly under the spiral inductor layer, by which the quality factor of the spiral inductor is increased since the substantial sectional area of the spiral inductor layer is increased and thus the parasitic resistance of the spiral inductor is decreased.

Abstract: An adjusting frequency device of built-in oscillator for USB interface and a method thereof are described. It is Auto detect the error of bit-rate between the USB host and the USB device, and produce tiny counting time for clocking the clock error between the USB host and the USB device by a delay lock loop. The clock error after quantification, digitization and operation outputting a quantitative code, then the oscillator adjusts the oscillation frequency according to the quantitative code. Whereby adjusting the oscillation frequency of the USB device and the frequency of the USB host to less than 1% clock error for ensuring the accuracy of data transmission.

Abstract: Disclosed is an improved circuit and method for generating a power on reset signal, the circuit being a two-stage circuit comprising a delay-stage circuit and an output-stage circuit. The delay-stage circuit delays a time for a power on reset signal generated in the output-stage circuit changing from low to high, so that a power voltage having a low rising speed may be normally reset. Further, the two stages provide charging paths and discharging paths so that the power on reset signal may be prevented from changing from high to low when it has changed from low to high, when noises are presented on the power voltage.

Abstract: Disclosed is a low hysteresis center offset comparator, comprising a first switch device, a differential amplifier, a second switch device, a general comparator, a first inverter and a second inverter. By means of the components, a hysteresis window with the low hysteresis center offset may be formed with respect to the inventive comparator with a width of a half-portion thereof formed equal to that of the other half-portion thereof corresponding to an offset voltage inherent in the differential amplifier.

Abstract: A digital pulse width modulation (DPWM) controlling system for controlling a load of an application circuit with a DPWM unit is provided, which comprises a comparator and a micro-control unit, the comparator receiving a sense signal detected from the load and a reference signal and comparing the sense signal and the reference signal to output an analog comparison signal, and the micro-control unit generating a trigger signal having a minimum pulse width and receiving the analog comparison signal to output a DPWM signal, wherein the micro-control unit adjusts the minimum pulse width of the trigger signal to obtain a pulse width of the DPWM signal in response to the analog comparison signal whenever the sense signal is within a stable duration so as to output the DPWM signal to the application circuit to control the load.

Abstract: A method for an audio algorithm is provided. The method includes steps of (a) providing an audio datum, a block division rule of unfixed sample size, and an encoding optimization process; (b) establishing a block from the audio datum by the block division rule of unfixed sample size; (c) obtaining an encoding result by encoding the block with the encoding optimization process; and (d) repeating respective steps (b)-(c) and thereby obtaining a plurality of the blocks.

Abstract: A proximity sensing device for judging an operation is provided. The proximity sensing device includes a first sensing area sensing the operation and generating a first signal; and a second sensing area sensing the operation and generating a second signal, wherein if a ratio of the first signal and the second signal is greater than a threshold, the operation is judged as a correct operation.

Abstract: In the present invention, a temperature compensation circuit is provided. The temperature compensation circuit includes a first oscillator for providing a first clock signal, a timer electrically connected to the first oscillator for clocking a specific time period, a voltage regulator for generating a constant voltage, a second oscillator electrically connected to the voltage regulator for providing a second clock signal, and a counter electrically connected to the second oscillator for counting within the specific time period based on the second clock signal so as to obtain a counting value, and thereby a frequency of the second oscillator is obtained for the temperature compensation.

Abstract: A method for sequentially driving light emitting diodes (LEDs) arranged in an array is provided. The method includes steps of a) electrically connecting anodes and cathodes of the LEDs to a ground; b) keeping the cathodes of a first part of the LEDs being electrically connected to the ground; c) increasing anode potentials of the LEDs to a first reference potential, and floating the cathodes of other parts of the LEDs simultaneously; d) supplying a current to the first part of the LEDs, and increasing cathode potentials of the other parts of the LEDs to a second reference potential simultaneously; and e) repeating the steps a)–d) for a second part of the LEDs. In which, the first part of the LEDs is arranged in a target row of the array and the second part of the LEDs is arranged in a row next to the target row.

Abstract: An encoding format for a radio frequency identification system is provided. The encoding format includes a low-level pulse of one unit length and a high-level pulse of n unit length, wherein the value of n is adjusted to constitute different command/data formats.

Abstract: In the present invention, a temperature compensation circuit is provided. The temperature compensation circuit includes a first oscillator for providing a first clock signal, a timer electrically connected to the first oscillator for clocking a specific time period, a voltage regulator for generating a constant voltage, a second oscillator electrically connected to the voltage regulator for providing a second clock signal, and a counter electrically connected to the second oscillator for counting within the specific time period based on the second clock signal so as to obtain a counting value, and thereby a frequency of the second oscillator is obtained for the temperature compensation.

Abstract: A power processing interface for a radio frequency identification system is provided.

Abstract: A controlling device for the cursor and the method for operating the same are provided. The controlling device includes a capacitor array having a plurality of equivalent capacitors, a microprocessor electrically connected to the capacitor array for sending a pulse train to the capacitor array in the x-direction and receiving a potential of each equivalent capacitor in the y-direction so as to determine a movement of a cursor, and a charge-absorbing device disposed above the capacitor array, wherein when the charge-absorbing device is moved correspondingly to a position of a specific equivalent capacitor in the capacitor array, a storage charge of the specific equivalent capacitor is absorbed so that the potential thereof is lowered, and thereby the movement of the cursor is determined by the microprocessor.

Abstract: A detection method for a touch-panel device having a touch pad electrically connected to at least m×n equivalent capacitors is provided, wherein m is a number of the equivalent capacitors on a specific one of rows and n is a number of the equivalent capacitors on a specific one of columns. The method includes steps of: (a) charging the m equivalent capacitors on the specific row to obtain m digital signals; (b) comparing potentials of the m digital signals and obtaining a relatively smallest potential as a standard value; (c) repeating the steps (a)˜(b) to obtain n the standard values for the m×n equivalent capacitors; (d) touching the touch pad; (e) scanning the touch pad to obtain at least a potential variation value relative to the standard value for the m equivalent capacitors on the specific row; and (f) comparing the standard value with the variation value to identify a touched point on the touch pad.

Abstract: An identification method for a touch control device having a memory and a pad electrically connected to an equivalent capacitance is provided. The provided identification method for a touch control device includes steps of: (a) charging the equivalent capacitance for obtaining a first voltage value; (b) storing the first voltage value in the memory; (c) touching the pad; (d) scanning the pad for obtaining a second voltage value of the equivalent capacitance; and (e) comparing the first voltage value with the second voltage of the equivalent capacitance for identifying a touched position on the pad.

Abstract: A circuit capable of providing stable timing clock includes: a step-down clamping circuit, an oscillating circuit, and a voltage potential-conversing circuit. The step-down clamping circuit that step down the input first voltage potential, and clamp to output second voltage, the oscillating circuit is coupled to the clamping circuit and is an oscillating circuit that takes the second voltage as a operating voltage to generate a first timing clock signal, which has a lower voltage potential. The voltage potential-conversing circuit is coupled to the oscillating circuit to convert the first timing clock signal into a second timing clock signal, which has a higher voltage potential. And it is a stable timing clock signal available for other system circuit.

Abstract: The method and the device thereof for dynamically calibrating a frequency is provided. The method includes steps of: (a) providing a first system frequency; (b) obtaining a first parameter of timer counting number; (c) providing a second system frequency; (d) obtaining a second parameter of timer counting number if there is a frequency drift between said first system frequency and said second system frequency; (e) obtaining a third parameter of timer interrupt interval by comparing said first parameter of timer counting number with said second parameter of timer counting number; and (f) calibrating a frequency output according to said third parameter of timer interrupt interval.

Abstract: The present invention is related to a fast frequency locking method and architecture realized by employing adaptive asymmetric charge-pump current mechanism, whose circuit is composed of elements such as: a pair of frequency-dependent main current sources, a pair of (rising, descending) frequency-dependent assistant current sources, a digital control circuit, a voltage controlled oscillator, an impedance, a sampling frequency sampled from output frequency of the voltage controlled oscillator, a fixed reference frequency and a phase detector, etc. The difference between the present invention and traditional charge-pump circuit is that the present invention had added at least one pair of frequency-dependent assistant current sources.

Abstract: An high-frequency signal suppresser includes a resister, a first capacitor, a second capacitor, and a shaping circuit. A high-frequency signal inputted from the input terminal of the high-frequency signal suppresser is filtered by the resister, the first capacitor, and the second capacitor, and then shaped by the shaping circuit so as to generate a logic signal at the output terminal of the high-frequency signal suppresser.

Abstract: A method for sequentially driving light emitting diodes (LEDs) arranged in an array is provided. The method includes steps of a) electrically connecting anodes and cathodes of the LEDs to a ground; b) keeping the cathodes of a first part of the LEDs being electrically connected to the ground; c) increasing anode potentials of the LEDs to a first reference potential, and floating the cathodes of other parts of the LEDs simultaneously; d) supplying a current to the first part of the LEDs, and increasing cathode potentials of the other parts of the LEDs to a second reference potential simultaneously; and e) repeating the steps a)-d) for a second part of the LEDs. In which, the first part of the LEDs is arranged in a target row of the array and the second part of the LEDs is arranged in a row next to the target row.