Patent application number | Description | Published |
20090050904 | LIGHT EMITTING DIODE CIRCUIT - A light emitting diode circuit includes a chip and a light emitting diode. The chip includes a current control unit that is used for controlling a driving current flowing through a path. The light emitting diode is positioned outside of the chip and is coupled to the path. The light emitting diode generates a light source according to the driving current. The light emitting diode circuit can directly control the current value of a driving current flowing through the light emitting diode. In this way, the circuit design is simplified and the production cost of the electronic product is reduced. | 02-26-2009 |
20090195950 | NETWORK COMMUNICATION PROCESSING APPARATUS WITH ESD PROTECTION - The invention discloses a network communication processing apparatus capable of processing the cable discharge event. The network communication processing apparatus comprises an electrostatic protection circuit coupled between two signal pins used for transmitting/receiving the network signal on a cable. When the cable discharge event occurred on the cable, the electrostatic protection circuit will be turned on so that the two signal pins are short together to discharge back the electrostatic signal to the cable. | 08-06-2009 |
20140054801 | ELECTRONIC DEVICE - An electronic device includes a core circuit and multiple pad units. The core circuit includes multiple core MOS and the multiple pad units are respectively electrically connected to the core circuit. Each pad unit includes at least one pad MOS. A core gate in each core MOS and a pad gate in each pad MOS extend along the same direction or extend parallel with each other. | 02-27-2014 |
20150124361 | ESD PROTECTION CIRCUIT - The disclosure provides an ESD protection circuit. The ESD protection circuit comprises: a clamping unit, a driving unit, a resistance unit, a switch unit, and a capacitance unit. The clamping device is coupled between a first power source and a second power source. The driving unit is coupled between the clamping device and a reference node. The resistance unit is coupled between the first power source and the reference node. The switch unit is coupled to the driving unit via the reference node. The capacitance unit is coupled between the switch unit and the second power source. Under a normal operation condition, the driving unit controls the switch unit to be in an un-conducting status. Under an ESD condition, the driving unit controls the switch unit to be in a conducting status. | 05-07-2015 |
20160056625 | ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT - An ESD protection circuit includes a plurality of resistors, at least a capacitor, a driving circuit and an ESD clamping device, wherein a first node of each resistor is connected to a first supply voltage, and a second node of each of at least a portion of the resistors is selectively connected to an input node via a corresponding switch respectively, and a first node of the capacitor is connected to a second supply voltage, and a second node of the capacitor is connected to the input node; the driving circuit is arranged to generate a driving signal according to a voltage on the input node; and the ESD clamping device is coupled to the driving circuit, and connected between the first supply voltage and the second supple voltage, and the ESD clamping device is arranged to selectively bypass an ESD current according to the driving signal. | 02-25-2016 |
Patent application number | Description | Published |
20110227611 | OSCILLATOR AND CONTROL METHOD THEREOF - An oscillator and the control method thereof. The oscillator includes an oscillation unit to receive a first current and to generate an oscillating signal according to the first current, a frequency-to-voltage converter to receive the oscillating signal and to generate a converted voltage according to a frequency of the oscillating signal, and a voltage-to-current converter to receive the converted voltage and to generate the first current according to the converted voltage, wherein the first current is modulated from a first value to a second value after the initiation of the oscillation unit. | 09-22-2011 |
20110317319 | ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT - An ESD (Electrostatic Discharge, ESD) protection circuit includes a voltage-divider generating circuit, a decision circuit, and a switching circuit. The voltage-divider generating circuit outputs a first voltage and a second voltage according to an input voltage. The decision circuit is coupled to the voltage-divider generating circuit and receives the first voltage and the second voltage. The decision circuit outputs an output voltage according to the first voltage and the second voltage. The switching circuit is coupled to the decision circuit and is either turned on or turned off according to the output voltage. The transient voltages of the first and the second voltage are different. | 12-29-2011 |
20130128401 | NETWORK COMMUNICATION DEVICE AND PRINTED CIRCUIT BOARD WITH TRANSIENT ENERGY PROTECTION THEREOF - A network communication device and printed circuit board are provided with transient energy protection. The network communication device includes a transceiver, a transformer, a connector, a spark gap, and a transient energy trigger circuit. The transformer is coupled between the transceiver and the connector. The spark gap and the transient energy trigger circuit are coupled in parallel, between the transformer and a ground end. Alternatively, the spark gap and the transient energy trigger circuit are coupled in parallel, between any two of differential signal lines of the transformer. The spark gap and the transient energy trigger circuit provide a multi-path structure for conducting away the transient energy. A first transient energy is conducted to the ground end through the transient energy trigger circuit, while a second transient energy is conducted to the ground end through the spark gap. | 05-23-2013 |