Chun-Chi Chen
Chun-Chi Chen, Taipei County TW
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20110080109 | HIGH EFFICIENCY LED DRIVER WITH CURRENT SOURCE REGULATIONS - The present invention provides a control circuit for LED driver. A voltage-feedback circuit is coupled to LEDs to sense a voltage-feedback signal for generating a voltage loop signal. Current sources are coupled to the LEDs to control LED currents. A detection circuit is connected to sense voltages of current sources for generating a current-source loop signal in response to a minimum voltage of the current sources. Furthermore, a buffer circuit generates a feedback signal in accordance with the voltage loop signal and the current-source loop signal. The feedback signal is coupled to limit a maximum voltage of the LEDs and regulate the minimum voltage across the current sources. | 04-07-2011 |
Chun-Chi Chen, Kaohsiung City TW
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20080211829 | Driving Device for Quickly Changing the Gray Level of the Liquid Crystal Display and its Driving Method - A driving device for quickly changing the gray level of the liquid crystal display and its driving method are disclosed. The driving device includes a group of thin film transistors with matrix array, a plurality of gate lines and a plurality of data lines. The object of quickly changing the gray level of the liquid crystal display can be accomplished by the different arrangement of the gate lines and the data lines and the different connection of the thin film transistors with the gate lines and the data lines. The driving method for the said driving device includes: two gate lines in the liquid crystal display are simultaneously or synchronously turned on according to in the bright, period or in the black, period, the voltage for displaying the present frame interval data or the voltage for displaying black image is given to the thin film transistors connected with the gate lines, and scanning continues in turn. Tire present invention suits for the picture treatment of various liquid crystal displays, organic light emitting diode (OLED) display or plasma display panel (PDP). | 09-04-2008 |
20090073159 | OVERDRIVE METHOD FOR ANTI-DOUBLE EDGE OF LCD - An overdrive method for anti-double edge of LCD uses: a register unit, a signal processing module including a selection unit and a driving-voltage lookup table (ADE LUT) and a plurality of multiplex processing units to effectively save the resources of hardware and to eliminate the double edge phenomenon generated during overdrive liquid-crystal image developing by selecting among present frame driving-voltage values, overdrive voltage values and actually achieved voltage values input from the driving-voltage lookup table and by outputting driving-voltage values suitable for respective situations according to selection signals of a selection unit by the multiplex processing units. The method is added with a complementary table and an operation unit to increase its scope of application, to eliminate double edge generated by different response speeds; and thereby is suitable for various liquid crystal displays. | 03-19-2009 |
20100265270 | Driving Device for Quickly Changing the Gray Level of the Liquid Crystal Display and Its Driving Method - A driving device for quickly changing the gray level of the liquid crystal display and its driving method are disclosed. The driving device includes a group of thin film transistors with matrix array, a plurality of gate lines and a plurality of data lines. The object of quickly changing the gray level of the liquid crystal display can be accomplished by the different arrangement of the gate lines and the data lines and the different connection of the thin film transistors with the gate lines and the data lines. The driving method for the said driving device includes: two gate lines in the liquid crystal display are simultaneously or synchronously turned on according to in the bright period or in the black period, the voltage for displaying the present frame interval data or the voltage for displaying black image is given to the thin film transistors connected with the gate lines, and scanning continues in turn. The present invention suits for the picture treatment of various liquid crystal displays, organic light emitting diode (OLED) display or plasma display panel (PDP). | 10-21-2010 |
Chun-Chi Chen, Hsinchu City TW
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20100233437 | LITHOGRAPHIC MACHINE PLATFORM AND APPLICATIONS THEREOF - A lithographic machine platform and applications thereof is disclosed. The lithographic machine platform comprises: an electron beam or an ion beam generator generating an electron beam or an ion beam; a substrate supporting platform supporting a substrate; and a precursory gas injector injecting a precursory gas above the substrate. The present invention uses the electron beam or the ion beam to induce the precursory gas to react with the electron beam or the ion beam, and then the precursory gas is deposited on the substrate. The present invention not only fabricates a patterned layer on the substrate in a single step but also achieves a high lithographic resolution and avoids remains of contaminations by using the properties of the electron beam or the ion beam and the precursory gas. | 09-16-2010 |
Chun-Chi Chen, Taipei Hsien TW
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20080216990 | HEAT DISSIPATION DEVICE WITH A HEAT PIPE - A heat dissipation device comprises at least two heat pipes ( | 09-11-2008 |
20090073134 | Dual-mode touch screen of a portable apparatus - A dual-mode touch panel for use on a screen of a mobile device, includes a substrate; a first touch panel, attached to a first side of the substrate; and a second touch panel, attached to a second side of the substrate. | 03-19-2009 |
20090303718 | LED LAMP - An LED lamp includes a lamp cover consisting of a plurality of sector-shaped connecting bodies, a plurality of fins attached to the lamp cover and a plurality of LED modules attached to the lamp cover and opposing the fins. A locking device is pivotably mounted to the lamp cover and comprises a supporting pole extending in the lamp cover, a plurality of branches pivotably mounted to the lamp cover and the supporting pole. The branches are movable along the supporting pole to be locked at a desired position, whereby an illumination angle of the LED modules of the lamp cover relative to the supporting pole is changeable via movement of the branches along the supporting pole of the locking device. Thus, an illumination area and an illumination intensity of the LED lamp are adjustable. | 12-10-2009 |
20100053904 | LOCKING DEVICE FOR HEAT SINK - A locking device is used for securing a heat sink to an electronic device mounted on a first face of a printed circuit board which defines a first hole. The heat sink defines a second hole therein. The locking device has a fastener including a head portion located aside the heat sink, a foot portion located aside a second face of the printed circuit board, and a body portion extending through the holes of the heat sink and the printed circuit board and interconnecting the head portion and the foot portion. The foot portion includes a buckling part abutting against the second face of the printed circuit board, and a positioning part extending toward the head portion to a position above the buckling part. When the buckling part abuts against the printed circuit board, the positioning part has a portion thereof entering into the first hole. | 03-04-2010 |
Chun-Chi Chen, Nantou City TW
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20100034309 | MULTIPLE INPUT MULTIPLE OUTPUT ANTENNA SYSTEM, SIGNAL TRANSMISSION METHOD, SIGNAL TRANSMISSION APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR THE MULTIPLE INPUT MULTIPLE OUTPUT ANTENNA SYSTEM - A multiple input multiple output (MIMO) antenna system, a signal transmission method, a signal transmission apparatus and a computer program product for the MIMO antenna system are provided. The signal transmission method comprises the following steps of transmitting a signal with a first signal transmission mode and a first transmission power via a signal transmission channel; receiving a signal to noise ratio (SNR) of the signal; receiving an interference value of the signal transmission channel; obtaining a power weight value according to the interference value; determining a system threshold of the signal transmission channel to the SNR of the signal; determining a second signal transmission mode of the signal transmission channel based on the system threshold; and determining a second transmission power of the signal transmission channel according to the power weight value. | 02-11-2010 |
Chun-Chi Chen, Tao Yuan County TW
Chun-Chi Chen US
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20090085886 | Method and apparatus for performing view switching functions on handheld electronic device with touch screen - A method for performing a view switching function of a handheld device with a touch screen is provided. The handheld device has an LCD panel and a touch panel. The touch panel has a touch region larger than a display area of the LCD panel. The touch panel has a main touch region overlapping the LCD panel, and an assistant touch region surrounding but not overlapping the LCD panel. The method includes (a) when the touch panel detects a presence of an object, determining whether the main touch region or the assistant touch region is touched; (b) when it is determined that the main touch region is touched, and it is determined that the object slides to the assistant touch region, switching from a first view to a second view displayed on the LCD panel; and (c) when it is determined that the assistant touch region is touched, and it is determined that the object slides to the main touch region, switching from a third view to a fourth view displayed on the LCD panel. | 04-02-2009 |
Chun-Chi Chen, New Taipei City TW
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20130120886 | DRIVING CIRCUITS WITH POWER MOS BREAKDOWN PROTECTION AND DRIVING METHODS THEREOF - A driving circuit is provided. The driving circuit is capable of driving a load coupled to an output node of the driving circuit. The driving circuit includes an output-stage element, a first N-type metal-oxide-semiconductor (NMOS) transistor, and a first P-type metal-oxide-semiconductor (PMOS) transistor. The output-stage element is coupled between an operation voltage source and the output node. The first NMOS transistor has a gate, a drain coupled to the output node, and a source coupled to a ground. The first PMOS transistor has a gate, a drain coupled to the ground, and a source coupled to the output node. When the first NMOS transistor begins to be turned off, the first PMOS transistor is turned on, and a voltage at the drain of the first NMOS transistor is clamped to be lower than a breakdown trigger voltage of the first NMOS transistor. | 05-16-2013 |
20130169338 | CLOCK GENERATOR AND METHOD OF GENERATING CLOCK SIGNAL - A clock generator utilized for providing a clock signal includes: a first oscillator and a switching circuit. The switching circuit is coupled to the first oscillator and a second oscillator, and utilized for receiving a first oscillating signal generated from the first oscillator and a second oscillating signal generated from the second oscillator, and selecting one of the first oscillating signal and the second oscillating signal as the clock signal according to a status signal. | 07-04-2013 |
20130293993 | OUTPUT CIRCUITS WITH ELECTROSTATIC DISCHARGE PROTECTION - An output circuit is provided and includes first and second output stage elements, a detection circuit, a control circuit, and a first pre-driver. The first and second output stage elements are coupled in series between a power terminal and the ground terminal. The detection circuit detect whether an electrostatic discharge event occurs at an output terminal between the two output stage elements to generate a control signal. The control circuit controls a state of the first output stage element when the control circuit is enabled according to the control signal. The first pre-driver controls the state of the first output stage element when the first per-driver is enabled according to the control signal. When the detection circuit detects that the electrostatic discharge event occurs at the output terminal, the control circuit is enabled to turn on the first output stage element, and the first pre-driver is disabled. | 11-07-2013 |
Chun-Chi Chen, New Taipei TW
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20130333216 | METHOD FOR MANUFACTURING HEAT DISSIPATION DEVICE - An exemplary method for manufacturing a heat dissipation device includes the following steps. First, providing fins spaced from each other. Then, providing an electric conductor extending through the fins and being electrically connected to the fins. Next, immersing the combination of the fins and the electric conductor into an electrolyte of an electrolytic cell. After that, connecting an anode of the electrolytic cell with the electric conductor in an electric conductive relationship. Finally, providing the anode with electrical power to form metal oxide films over surfaces of the fins and the electric conductor. | 12-19-2013 |
Chun-Chi Chen, Kaohsiung TW
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20130292553 | OPTICAL PROXIMITY SENSOR AND MANUFACTURING METHOD THEREOF - The present invention is an optical proximity sensor and manufacturing method thereof. The optical proximity sensor has an optical sensing unit, an illuminating unit, multiple transparent gels and a package. The package encapsulates the optical sensing unit and the illuminating unit. The transparent gels are respectively formed on top surfaces of the optical sensing unit and the illuminating unit. The transparent gels respectively have a convex part and a recess formed in the convex part. The package has through holes communicating with the recesses of the transparent gels to form openings. In a step of injecting encapsulant gel, because the transparent gels are still plastic, the protrusions can closely attach to the transparent gels. The encapsulant gel is prevented from forming above the sensing part and the illuminating part. | 11-07-2013 |
20150110157 | Time-Domain Temperature Sensing System with a Digital Output and Method Thereof - A time-domain temperature sensing system includes a cyclic delay line, a path selection circuit and a counter. The cyclic delay line includes a plurality of logic components connected. The path selection circuit connects with the cyclic delay line and the counter connects with the path selection circuit. The cyclic delay line is operated to sense and convert a temperature into a time pulse to generate a temperature-related time pulse width signal, and the cyclic delay line is further operated to measure the temperature-related time pulse width signal via the path selection circuit. The cyclic delay line is operated to convert the temperature into the time pulse and the counter is further operated to convert the temperature-related time pulse width signal into a digital signal via the path selection circuit, thereby generating a temperature-to-digital signal. | 04-23-2015 |
Chun-Chi Chen, Tainan City TW
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20150189272 | METHOD FOR ENCODING/DECODING VIDEO BY OBLONG INTRA PREDICTION - A video encoding method is provided in the invention. In such method, after a current encoding frame among a sequence of input frames is received, each coding unit in the current encoding frame may be optionally split into two oblong prediction units, and each of the prediction units may be optionally split into a plurality of sub-blocks so as to thereby improve the matching accuracy for a matching reference block from a reference frame. A video decoding method corresponding to the aforesaid video encoding method is also provided. | 07-02-2015 |
Chun-Chi Chen, Hsinchu County TW
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20150212155 | Integrated Circuit Testing Interface on Automatic Test Equipment - An integrated circuit (IC) testing interface capable of upgrading an automatic test equipment (ATE) for testing a semiconductor device includes at least one pin for receiving or transmitting at least a test signal to a tester of the automatic test equipment, a plurality of digitizers coupled to the at least one pin for generating a digital signal, a processing means coupled to the plurality of digitizers for processing the digital signal, and a connection unit for connecting the processing means with a computing device for transmitting an output signal from the processing means to the computing device, where the IC testing interface is disposed between the tester and a prober of the automatic test equipment. | 07-30-2015 |