Patent application number | Description | Published |
20080238844 | LIQUID CRYSTAL DRIVER CIRCUIT AND METHOD OF DRIVING LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A liquid crystal driver circuit includes a timing controller emitting at least two control signals therefrom, and at least two gate drivers receiving the control signals from the timing controller. The control signals are controlled such that signal levels thereof are not simultaneously varied. | 10-02-2008 |
20110043512 | IMAGE DISPLAY DEVICE AND VIDEO SIGNAL PROCESSING METHOD USED IN SAME - The degree of an influence from wiring crosstalk between signal lines of a data signal transmission line (video signal line) is decided on the basis of an input signal generated in display controlling unit (a timing controller) at a predetermined timing (at each frame period, at each clock pulse period, or at each horizontal period) and, based on a result of the decision, the voltage amplitude of a data signal is adjusted so that it may exceed an input amplitude specification value for data line driving circuits (data drivers) by a predetermined value. | 02-24-2011 |
20110074377 | TIME CONSTANT CIRCUIT, SWITCH CIRCUIT, DC/DC CONVERTER, AND DISPLAY DEVICE - To provide a time constant circuit and the like capable of acquiring a characteristic of an output voltage that attenuates gradually after attenuating steeply, compared to a characteristic that attenuates monotonously. The time constant circuit includes: a series/parallel circuit formed by serially connecting a plurality of parallel circuits each formed with a resistance element and a capacitance element between a first terminal and a second terminal; and a voltage-dividing resistance element connected between a third terminal connected to the second terminal and a fourth terminal. A first parallel circuit is formed with a first resistance element and a first capacitance element, a second parallel circuit with a second resistance element and a second capacitance element, and an n-th parallel circuit with an n-th resistance element and an n-th capacitance element. Note that ānā is the number of the parallel circuits and it is an integer of 2 or larger. | 03-31-2011 |
20120068977 | IMAGE DISPLAY DEVICE AND TRANSMISSION SIGNAL CONTROL METHOD TO BE USED IN SAME - An image display device and a transmission signal control method to be used in same and more particularly to the image display device and the transmission signal control method that can be suitably used when transmission wirings for data signal based on a video signal become complicated due to configurations of a large-sized and high-definition image display device. | 03-22-2012 |
20120200777 | VIDEO SIGNAL PROCESSING CIRCUIT, VIDEO SIGNAL PROCESSING METHOD USED IN SAME, AND IMAGE DISPLAY DEVICE USING SAME - There is provided a video signal processing method for performing predetermined signal processing on an input video signal to transmit an output video signal in a form of a specified transmission format through a video signal line including invalid bit polarity setting processing to be performed by an invalid bit polarity setting unit, wherein, when there exists an invalid bit having no data corresponding to data making up the input video signal in the specified transmission format of the output video signal, to count the number of low and high levels of gray-level data of the input video signal to compare a numerical size between the number of low levels and the number of high levels for judgment and to set a polarity of the invalid bit based on the judgment result. | 08-09-2012 |
20140167717 | DC/DC CONVERTER AND DISPLAY DEVICE INCLUDING THE SAME - The present invention is directed to sufficiently reduce the level of EMI which occurs from a switching FET in a DC/DC converter and minimize deterioration in efficiency of a power supply. A DC/DC converter includes a switching circuit for driving a switching FET for increasing or decreasing voltage, and a switching circuit for driving a ringing frequency changing circuit. One end of a capacitor is connected to a drain of the switching FET for increasing or decreasing voltage, and the other end of the capacitor is connected to a drain of an FET for the ringing frequency changing circuit. A source of the FET for the ringing frequency changing circuit is connected to GND, and a control circuit is provided which makes the ringing frequency changing circuit valid so that a ringing frequency becomes low only in a ringing frequency component exerting large influence on deterioration in EMI. | 06-19-2014 |
20150042696 | VIDEO SIGNAL PROCESSING CIRCUIT, VIDEO DISPLAY DEVICE, AND VIDEO SIGNAL PROCESSING METHOD - The video signal processing circuit which analyzes video signals inputted from outside, performs conversion processing for image quality adjustment on the video signals based on a result of analysis, transmits those towards a video display unit includes: a feature value/maximum value calculation module which calculates a feature value that is a numerical value showing a degree of brightness of the video signals; a gradation conversion threshold value calculation module which calculates a threshold value regarding conversion of the gradation based on a threshold value calculation expression that is formed based on the feature value and a conversion coefficient set in advance; and a gradation conversion module which performs gradation conversion based on a linear function that increases linearly by taking a region of the gradation equal to or higher than the threshold value among the video signals as a target. | 02-12-2015 |
20150049129 | CONTROL CIRCUIT AND A DISPLAY THEREOF - This invention n provides a control circuit having large effects of low power consumption in CABC drive. The control circuit performs B/L luminance reduction in eliminating a discomfort in image quality by using the feature value calculation circuit in the video signal. The control circuit comprises a luminance control circuit controlling a backlight luminance according to an inputted video signal and a gradation conversion circuit for converting a gradation of inputted video signal according to a controlled luminance. The control circuit reduces continuously and smoothly the backlight luminance, while the screen area reaches one-pixel white, in case where the all white is inputted as video signal, one-pixel black is displayed in any screen area from a display condition of all white, a rate of screen area displaying one-pixel black is gradually increased, and the video signal is continuously changed until the screen area of all white reaches the one-pixel white. | 02-19-2015 |