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Patent
Nuvoton Technology Corporation | Date: 2015-12-08

A sensing device includes a comparator, a first and a second variable capacitor units. The first and second variable capacitor units charge a first and a second comparator inputs, respectively, according to a first and a second driving signals, such that the first and second comparator inputs have a first and a second voltages, respectively, in which a voltage level of the first driving signal is higher than a voltage level of the second driving signal. The comparator is configured to compare the first voltage and the second voltage to generate a comparator output signal. The first variable capacitor unit is adjusted according to the comparator output signal to perform potential compensation for the first comparator input, or the second variable capacitor unit is adjusted according to the comparator output signal to perform potential compensation for the second comparator input.


Patent
Nuvoton Technology Corporation | Date: 2015-04-23

A programming control method for a servo fan and a programming control device thereof are provided in the embodiment of the invention. The programming control device is coupled to a motor. The programming control device includes an input/output interface, a micro processing unit and a function circuit. The function circuit is coupled to the input/output interface and the micro processing unit. The function circuit updates the firmware according to a magnitude of an operation voltage.


Patent
Nuvoton Technology Corporation | Date: 2015-03-17

A charging circuit including a transformer, a storage element, a switch element, a first resistor, and a current detection unit is provided. The transformer includes a primary coil and a secondary coil. The storage element is coupled to the secondary coil. The switch element is coupled to the primary coil. The first resistor is coupled to the primary coil. The current detection unit detects current flowing through the first resistor. When the current reaches a set current, the current detection unit sends a full signal to de-activate the switch unit.


Patent
Nuvoton Technology Corporation | Date: 2015-01-06

A chip is provided. A power transmission path and a data transmission path are coupled between an upstream port and a downstream port. A first detection unit generates a first trigger signal when a voltage level of the power transmission path reaches a first predetermined value. A first control unit turns on the data transmission path according to the first trigger signal. A second detection unit detects a voltage level of the data transmission path. When the voltage level of the data transmission path matches a pre-determined condition, the second detection unit generates a second trigger signal, and the first control unit turns off the data transmission path according to the second trigger signal. A setting unit sets the voltage level of the data transmission path when the first control unit turns off the data transmission path.


Patent
Nuvoton Technology Corporation | Date: 2014-05-29

A sensing device includes a comparator, a first and a second variable capacitor unit. A first comparator input of the comparator is electrically coupled to a touch pad. The first variable capacitor unit is configured to charge the first comparator input such that the first comparator input has a first potential. The second variable capacitor unit is configured to charge a second comparator input of the comparator such that the second comparator input has a second potential. The comparator is configured for comparing the first potential and the second potential to generate a comparator output signal. In a condition of the touch pad being operated, the first variable capacitor unit is adjusted according to the comparator output signal to perform potential compensation for the first comparator input, or the second variable capacitor unit is adjusted according to the comparator output signal to perform potential compensation for the second comparator input.

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