| PRINCETON TECHNOLOGY CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20120013558 | TOUCH DEVICES AND DETECTION METHODS THEREOF - A detection method for detecting a touch point on a touch panel is provided. The detection method includes: (1) providing a touch panel which is capable of being divided into even unit regions; (2) defining a plurality of unit regions as a detection region by a control unit; (3) detecting the detection region to obtain a position of the touch point in the corresponding unit region by a driving unit; (4) when the detecting is failed to obtain the position, re-defining the number of unit regions consisting of the detection region by the control unit; and (5) when the position is detected, memorizing the position into a memory unit. The number of unit regions defined in the step (4) is equal to a half of the number of unit regions defined in the step (2). | 01-19-2012 |
| 20100166224 | LOUDNESS CIRCUIT WITHOUT OPERATIONAL AMPLIFIER - A loudness circuit without operational amplifiers is provided. The loudness circuit includes a first equivalent resistance circuit for accepting an audio signal; a second equivalent resistance circuit connected to the first equivalent resistance circuit; and a series resistor and capacitor, parallel connected with the second equivalent resistance circuit for determining zeros of the loudness circuit; wherein the first and the second equivalent resistance circuit, the resistor and the capacitor regulates the output gain of the loudness circuit in all frequency bands such that the gain is raised in a predetermined low-frequency band and reduced in a predetermined high-frequency band, and a loudness signal is output from the second equivalent resistance circuit such that zeros of the loudness circuit are fixed. | 07-01-2010 |
| 20100164930 | DRIVE CIRCUIT OF DISPLAY AND METHOD FOR CALIBRATING BRIGHTNESS OF DISPLAY - A drive circuit of a displayer for driving at least a pixel, including: an output stage coupled to the pixel and controlled by a pixel signal to switch an output voltage on the pixel; a calibration device coupled between the output stage and the pixel and including an input end controlled by a bias voltage further calibrating the brightness of the pixel; a stabilizing device coupled between the input end of the calibration device and the pixel signal for stabilizing the voltage on the input end of the calibration device to be at the level of the bias voltage after a variation; and a accelerating device coupled between the stabilizing device and a voltage source for generating the bias voltage and accelerating the speed stabilizing the voltage on the input end of the calibration device to be at the level of the bias voltage. | 07-01-2010 |
| 20090237061 | DC-DC CONVERSION DEVICE WITH DIGITALLY CONTROLLED COMPARATOR - A DC-DC conversion device is provided. The DC-DC conversion device includes a control signal generator, a conversion module and a comparison module. The control signal generator generates a control signal according to a delay signal. The conversion module is coupled to the control signal generator to convert an input voltage to an output voltage according to the control signal. The comparison module is coupled to the control signal generator and conversion module to compare the output voltage with a reference voltage and output the delay signal according to the comparison result, an enable signal and a clock signal. | 09-24-2009 |
| 20090153584 | IMAGE ADJUSTING APPARATUS - An image adjusting apparatus is provided for adjusting the contrast of an input image. The image adjusting apparatus comprises a transformation module, a memory module, a processing module, an output module and a display module. The transformation module is used for transforming the input image to a plurality of input image values. The memory module is used for pre-storing a plurality of gain curves, wherein each of the gain curves comprises at least one first segment with a first slope and one second segment with a second slope. The processing module is coupled to the transforming module and the memory module for adjusting the plurality of the input image values and generating a plurality of output image values corresponding thereto according to a gain curve. The output module is coupled to the processing module for generating an output image according to the plurality of the output image values. The display module is coupled to the output module for displaying the output image. | 06-18-2009 |
| 20080253584 | AUDIO PLAYING SYSTEMS - An audio playing system is provided comprising a first processing module, a second processing module, a control module, an output module, and a displaying module. The first and second processing modules amplify an audio signal and respectively generates a first first processed signal, a first second processed signal, a second first processed signal, and a second second processed signal. The control module is coupled to the first processing module and the second processing module and generates a playing signal according to a control signal, the first first processed signal, the first second processed signal, the second first processed signal, and the second second processed signal. The output module is coupled to the control module and amplifies the playing signal to generate an output signal. The displaying module is coupled to the output module and plays the output signal. | 10-16-2008 |
