Abstract: A method for fabricating metal-oxide semiconductor (MOS) transistor is disclosed. The method includes the steps of: providing a semiconductor substrate having a silicide thereon; performing a first rapid thermal process to drive-in platinum from a surface of the silicide into the silicide; and removing un-reacted platinum in the first rapid thermal process.

Abstract: A method for fabricating metal-oxide semiconductor (MOS) transistor is disclosed. The method includes the steps of: providing a semiconductor substrate having a silicide thereon; performing a first rapid thermal process to drive-in platinum from a surface of the silicide into the silicide; and removing un-reacted platinum in the first rapid thermal process.

Abstract: A global positioning System receiver and a correlating circuit thereof are disclosed. They sequentially and in parallel generate the portion of bits of the C/A code representing the satellite, sequentially and in parallel generate the portion of bits of the corrected frequency code of Doppler effect, and sequentially outputs the portion of bits of the C/A code and the corrected frequency code therefrom for multiplying the data and the IF data and for adding the multiplications therefrom for generating the total addition values.

Abstract: The present invention discloses correlation architecture in the application of full-digital GPS (Global Positioning System) receivers. According to the present invention, a satellite C/A code generator is employed to generate N-bit parallel code data at a time, and a Doppler frequency generator is used to generate N-bit parallel Doppler frequency data at a time. Signals received by the receiver can be temporarily stored in a buffer that provides N-bit parallel reception data to a correlation circuit. In the correlation circuit, a N-bit multiplier is used to multiply the N-bit reception data by the N-bit C/A code data and the N-bit Doppler frequency data to generate multiplication results. The N-bit multiplication results are thereafter summed up in parallel by a digital summator. Accordingly, the correlator of the present invention can improve circuit performance and save the required cost.

Abstract: A global positioning System receiver and a correlating circuit thereof are disclosed. They sequentially and in parallel generate the portion of bits of the C/A code representing the satellite, sequentially and in parallel generate the portion of bits of the corrected frequency code of Doppler effect, and sequentially outputs the portion of bits of the C/A code and the corrected frequency code therefrom for multiplying the data and the IF data and for adding the multiplications therefrom for generating the total addition values.

Abstract: A global positioning system receiver and a correlating circuit thereof are disclosed. They sequentially and in parallel generate the portion of bits of the C/A code representing the satellite, sequentially and in parallel generate the portion of bits of the corrected frequency code of Doppler effect, and sequentially outputs the portion of bits of the C/A code and the corrected frequency code therefrom for multiplying the data and the IF data and for adding the products therefrom for generating the total summation value. Therefore, the correlating circuit having portable process is formed. Moreover, an external memory is used to store the sample digital data for reducing costs.

Abstract: A mosquito trap includes: a container defining an inner space therein and having a top opening in fluid communication with the inner space and adapted for entrance of mosquito therethrough and into the inner space; a perforated plate mounted in the container, dividing the inner space into first and second chambers, and formed with a plurality of apertures in fluid communication with the first and second chambers; and a carbon dioxide generating attractant disposed in the second chamber of the container.

Abstract: A global positioning System receiver and a correlating circuit thereof are disclosed. They sequentially and in parallel generate the portion of bits of the C/A code representing the satellite, sequentially and in parallel generate the portion of bits of the corrected frequency code of Doppler effect, and sequentially outputs the portion of bits of the C/A code and the corrected frequency code therefrom for multiplying the data and the IF data and for adding the multiplications therefrom for generating the total addition values.

Abstract: The present invention discloses correlation architecture in the application of full-digital GPS (Global Positioning System) receivers. According to the present invention, a satellite C/A code generator is employed to generate N-bit parallel code data at a time, and a Doppler frequency generator is used to generate N-bit parallel Doppler frequency data at a time. Signals received by the receiver can be temporarily stored in a buffer that provides N-bit parallel reception data to a correlation circuit. In the correlation circuit, a N-bit multiplier is used to multiply the N-bit reception data by the N-bit C/A code data and the N-bit Doppler frequency data to generate multiplication results. The N-bit multiplication results are thereafter summed up in parallel by a digital summator. Accordingly, the correlator of the present invention can improve circuit performance and save the required cost.

Abstract: A power protection device includes a power source switching unit for shutting off the power supply from an AC power source according to an open control signal, a surge voltage protecting unit for outputting the open control signal when a surge voltage occurs, a leakage current protecting unit for outputting the open control signal when a leakage current occurs, and an over-current protecting unit for outputting an open control signal according to a current value when an over-current occurs. The power protection device provides the surge voltage protection, the leakage current protection and the over current protection at the same time.

Abstract: A motor drive circuit and method with frequency setting and correcting functions. The drive circuit includes a speed control device, which simultaneously receives a sense signal and a rotation frequency signal. A pulse width modulation signal capable of modulating a duty ratio may be generated by a pulse width modulation method. The pulse width modulation signal is then transferred to a drive timing controller that generates a timing control signal to control output timing of a power drive signal for the drive circuit. Meanwhile, a sensor is used to detect a motor and to generate a correction sense signal, which is immediately fed back to the speed control device to form a closed loop control, so that the rotation frequency of the motor may be automatically corrected and set.

Abstract: A global positioning system receiver and a correlating circuit thereof are disclosed. They sequentially and in parallel generate the portion of bits of the C/A code representing the satellite, sequentially and in parallel generate the portion of bits of the corrected frequency code of Doppler effect, and sequentially outputs the portion of bits of the C/A code and the corrected frequency code therefrom for multiplying the data and the IF data and for adding the products therefrom for generating the total summation value. Therefore, the correlating circuit having portable process is formed. Moreover, an external memory is used to store the sample digital data for reducing costs.

Abstract: A global positioning System receiver and a correlating circuit thereof are disclosed. They sequentially and in parallel generate the portion of bits of the C/A code representing the satellite, sequentially and in parallel generate the portion of bits of the corrected frequency code of Doppler effect, and sequentially outputs the portion of bits of the C/A code and the corrected frequency code therefrom for multiplying the data and the IF data and for adding the multiplications therefrom for generating the total addition values.

Abstract: An apparatus for controlling a rotational speed of a motor, coupled to a sensing unit capable of outputting a sensing signal. The apparatus includes a controlling unit, coupled to the sensing unit, for outputting a controlling signal according to the sensing signal and independently of the rotational speed of the motor. The controlling signal is a square wave and has a duty ratio that is determined by the sensing signal. The apparatus also includes a driving unit, coupled to the controlling unit, for outputting a driving signal to a motor rotor according to the duty ratio of the controlling signal. The driving signal also is a square wave. The rotational speed of the motor rotor is determined by the duty ratio of the driving signal.

Abstract: A system for controlling the rotational speed of a fan, according to a reference clock having a reference frequency, is disclosed. The rotational speed corresponds to a fan rotational speed signal. The fan rotational speed controlling unit compares the reference clock with the fan rotational speed signal, to output a speed controlling signal. The Voltage generating circuit generates a level signal corresponding to the speed controlling signal. The driving unit generates a driving signal to control the rotational speed of the fan according to the level signal. When the fan is assembled with the controlling system, only coils with the same number of turns need to be use to obtain various rated rotational speeds of fans of different specifications by altering the reference frequency of the controlling system. Because coils with different number of turns are not required in stock at the same time, the time cost and the manufacturing cost can be reduced.

Abstract: An apparatus for controlling a rotational speed of a motor, coupled to a sensing unit capable of outputting a sensing signal. The apparatus comprises a controlling unit, coupled to the sensing unit, for outputting a controlling signal according to the sensing signal, wherein the controlling signal is a square wave and has a duty ratio that is determined by the sensing signal; and a driving unit, coupled to the controlling unit, for outputting a driving signal to a motor rotor according to the duty ratio of the controlling signal, wherein the driving signal is a square wave, and the rotational speed of the motor rotor is determined by the duty ratio of the driving signal.

Abstract: A motor monitoring system including a control chip and a motor is disclosed. The control chip could be a chipset or a monitoring chip able to control the rotational speed of the motor. The control chip is used to receive a temperature reading and output a control signal according to the temperature reading. The motor receives the control signal and automatically adjusts the speed of its own accordingly. Hence, the configuration of the monitoring system is simplified, the R&D flow is shortened, and the cost of R&D and manufacturing are greatly reduced.

Abstract: An input power control device for controlling the electrical power fed into the driven device from the power supply is provided. The power control device includes a driving device, a voltage detector, a current detector, a multiplier, and a power controller. The voltage detector detects the output voltage of the power supply, while the current detector detects the drive current fed into the driven device from the driving device. The multiplier multiplies the voltage signal and the current signal together to obtain the present electrical power input to the driven device. If the present input power of the driven device is too high, the power controller outputs an adjustment signal to the driving device to decrease the drive current of the driven device until the input power is equal to the rated value.

Abstract: A motor drive circuit and method with frequency setting and correcting functions. The drive circuit includes a speed control device, which simultaneously receives a sense signal and a rotation frequency signal. A pulse width modulation signal capable of modulating a duty ratio may be generated by a pulse width modulation method. The pulse width modulation signal is then transferred to a drive timing controller that generates a timing control signal to control output timing of a power drive signal for the drive circuit. Meanwhile, a sensor is used to detect a motor and to generate a correction sense signal, which is immediately fed back to the speed control device to form a closed loop control, so that the rotation frequency of the motor may be automatically corrected and set.

Abstract: A circuit for power protection comprising a power supply switching unit for switching a power supply off according to a switching-off signal, a surge voltage protective unit for outputting the switching-off signal while a surge voltage is occurred, a leakage current protective unit for outputting the switching-off signal while a leakage current is occurred, an overload current protective unit for outputting the switching-off signal while an overload current is occurred, an over/under voltage protective unit for outputting the switching-off signal while an over/under voltage is occurred, and a temperature protective unit for outputting the switching-off signal while an over-temperature is occurred.