Abstract: A capacitance difference detecting circuit, which comprises: a control circuit, for generating a control signal according to a first voltage and a second voltage; a first capacitor to be detected; a second capacitor to be detected; a first constant capacitor, having a terminal coupled to the first terminal of the first capacitor to be detected and the first input terminal; a second constant capacitor, having a terminal coupled to the first terminal of the second capacitor to be detected and the second input terminal; a voltage control unit, cooperating with the first capacitor to be detected, the second capacitor to be detected, the first constant capacitor and the second constant capacitor to control the first voltage and the second voltage. The voltage control unit is an adjustable capacitor and a capacitance value of the adjustable capacitor is controlled by the control signal.

Abstract: The present invention provides a driving circuit comprising a first data logic unit, a latch unit, and a determining unit. The first data logic unit is utilized for receiving at least a digital data signal and a first control signal, and for selectively inversing the digital data signal to generate a first digital output data signal according to the first control signal. The latch unit is utilized for receiving the first digital output data signal and a second control signal, and for selectively setting a second digital output data signal whether inversed from the first digital output data signal according to the second control signal. The determining unit is utilized for receiving the digital data signal and determining a transition number of the digital data signal in comparison with a previous digital data signal, and outputting the first control signal and the second control signal according to the transition number.

Abstract: The present invention provides a driving circuit. The driving circuit comprises: a plurality of signal output terminals, a data signal generating module, a gray level reference voltage generating module, a digital-to-analog converter (DAC), a first multiplex output module, an output buffer, a second multiplex output module, and a switch module. The driving circuit of the present invention can reduce the amount of required output buffers, so as to reduce area of the driving circuit efficiently and lower the production cost.

Abstract: The present invention provides a driving circuit. The driving circuit includes: an amount Z of first level shifting units, an amount B of second level shifting units, a first matrix decoding unit, an amount C of third level shifting units, an amount D of fourth level shifting units, a second matrix decoding unit, and a third matrix decoding unit. The driving circuit can generate an amount (Z×B)×(C×D) of high voltage digital output signals. The driving circuit provided by the present invention can significantly decrease the required high voltage elements (i.e. the level shifting units), and thus the present invention can reduce area of the driving circuit efficiently.

Abstract: The present invention discloses a gasket and a pipe joint using the same, which can achieve airtightness with a locking torque smaller than that used conventionally. The gasket of the present invention is interposed in between two coupling faces of a first pipe and a second pipe interconnecting to the first pipe, and each of the two coupling faces has at least one annular protrudent strip. The gasket of the present invention is characterized in that the gasket has at least one annular reception/contact member corresponding to the annular protrudent strip, and that the annular protrudent strip is pressed against the annular reception/contact member to form a twofold airtight mechanism with an inner annular contact area and an outer annular contact area. Thereby, the present invention can effectively promote the airtightness of the two coupling faces of the first pipe and the second pipe.

Abstract: A driving circuit of a display apparatus includes a decoder coupled to a plurality of scan lines of a display panel for decoding a plurality of input signals to output a plurality of scan line driving signals to thereby enable at least one scan line of the plurality of scan lines, and a plurality of control units (respectively coupled to the plurality of scan lines) for receiving an output enable signal to disable the plurality of scan lines during an interval between two scan lines being enabled.

Abstract: The present invention relates to an oscillating apparatus. The oscillating apparatus includes a biasing circuit, a multi-vibrator, a detecting circuit, and a selecting circuit. The biasing circuit is for generating a bias signal, wherein the biasing circuit includes a connecting port for using an impedance device to control an oscillating frequency or for directly connecting to external clock source as a reference clock. The multi-vibrator coupled to the biasing circuit for generating the oscillating frequency according to the quantity of the biasing signal. The detecting circuit coupled to the connecting port for generating a detecting signal whether the connecting port is coupled to the impedance device or the external clock source. The selecting circuit includes an AND gate coupled to the multi-vibrator and the selection signal and an OR gate coupled to the AND gate and the connecting port.

Abstract: A device for driving an LCD panel comprises: a gray level voltage generation circuit, for generating gray level voltages, and determining whether the gray level voltages are generated by utilizing a first set of reference voltages or a second set of reference voltages according to a polarity inversion control signal, where the gray level voltage generation circuit determines whether a gray level voltage is generated by utilizing a maximum of the first set of reference voltages or a maximum of the second set of reference voltages, and determines whether another gray level voltage is generated by utilizing a minimum of the first set of reference voltages or a minimum of the second set of reference voltages; and a source driving circuit, for selecting a gray level voltage according to display data or inverted data of the display data to drive a source of a display cell of the LCD panel.

Abstract: An amplifying circuit includes an operational amplifier, a pull-up circuit and a pull-down circuit. The operational amplifier generates a first pull-up signal, a first pull-down signal and an output signal, wherein the phases of the first pull-up signal and the first pull-down signal are out of phase with the output signal. The pull-up circuit includes a first controlling module for outputting a second pull-up signal according to the first pull-up signal, and a first adjusting module for adjusting the output signal according to the second pull-up signal. The pull-down circuit includes a second controlling module for outputting a second pull-down signal according to the first pull-down signal, and a second adjusting module for adjusting the output signal according to the second pull-down signal.

Abstract: An amplifying circuit includes an operational amplifier, a pull-up circuit and a pull-down circuit. The operational amplifier generates a first pull-up signal, a first pull-down signal and an output signal, wherein the phases of the first pull-up signal and the first pull-down signal are out of phase with the output signal. The pull-up circuit includes a first controlling module for outputting a second pull-up signal according to the first pull-up signal, and a first adjusting module for adjusting the output signal according to the second pull-up signal. The pull-down circuit includes a second controlling module for outputting a second pull-down signal according to the first pull-down signal, and a second adjusting module for adjusting the output signal according to the second pull-down signal.

Abstract: The present invention relates to an oscillating apparatus. The oscillating apparatus includes a biasing circuit, a multi-vibrator, a detecting circuit, and a selecting circuit. The biasing circuit is for generating a bias signal, wherein the biasing circuit includes a connecting port for using an impedance device to control an oscillating frequency or for directly connecting to external clock source as a reference clock. The multi-vibrator coupled to the biasing circuit for generating the oscillating frequency according to the quantity of the biasing signal. The detecting circuit coupled to the connecting port for generating a detecting signal whether the connecting port is coupled to the impedance device or the external clock source. The selecting circuit includes an AND gate coupled to the multi-vibrator and the selection signal and an OR gate coupled to the AND gate and the connecting port.

Abstract: A planar light source including a transflective film, a plurality of cold cathode fluorescence flat lamps and at least one reflective component to provide a uniform light source is described. A portion of the light emitted from the emitting areas of the cold cathode fluorescence flat lamps passes through the transflective film, and the other portion of the light is reflected to the reflective component by the transflective film. Then, the light is reflected to the dark areas between the emitting areas to compensate the brightness of the dark areas. When the brightness of the dark areas is compensated, the planar light source provides a uniform light without dark stripes.

Abstract: A fully differential, wide-band transconductance-transimpedance amplifier with a tuneable gain is disclosed. The amplifier includes a transconductance stage for generating a current signal from an inputted voltage signal. The amplifier also has a current gain stage for amplifying the current signal generated by the transconductance stage. Additionally, the amplifier includes a transimpedance stage for generating an output voltage signal from the amplified current signal generated in the current gain stage.

Abstract: A fully differential, wide-band transconductance-transimpedence amplifier with a tuneable gain is disclosed. The amplifier includes a transconductance stage for generating a current signal from an inputted voltage signal. The amplifier also has a current gain stage for amplifying the current signal generated by the transconductance stage. Additionally, the amplifier includes as transimpedance stage for generating an output voltage signal from the amplified current signal generated in the current gain stage.