Patent application number | Description | Published |
20080224952 | PLASMA DISPLAY DEVICE AND DRIVING APPARATUS THEREOF - A plasma display device, and a driving apparatus thereof, is provided, which includes: a plasma display panel for displaying an image, the plasma display panel including a plurality of discharge cells and a plurality of electrodes corresponding to the discharge cells; and an electrode driver for applying a driving voltage to the plurality of electrodes, wherein the electrode driver includes: a first switch coupled between the plurality of electrodes and a first power supply for supplying a sustain voltage to the plurality of electrodes in a sustain period, a second switch having a first terminal and a second terminal, the first terminal coupled to the first power supply, the second switch for gradually increasing a voltage of the second terminal to the sustain voltage. | 09-18-2008 |
20080224958 | PLASMA DISPLAY DEVICE AND DRIVING APPARATUS THEREOF - In a plasma display device and a driving apparatus thereof, a scan electrode driver for applying a driving voltage to a scan electrode has a diode including a cathode coupled to a sustain voltage supplying power and an anode coupled to a switch for applying a reset rising waveform to the scan electrode. In the scan electrode driver, when a switch for applying a reset rising waveform is turned on, the voltage at the scan electrode is gradually increased by a voltage that is less than the sustain voltage due to the breakdown voltage of the diode. Therefore, the number of power sources is reduced simplifying the circuit configuration and reducing the plasma display device production cost. | 09-18-2008 |
20080291130 | PLASMA DISPLAY DEVICE AND DRIVING METHOD THEREOF - A plasma display device and a method of driving the same, capable of reducing or preventing the deterioration of components such as a switching device, due to an overcurrent. In a reset period, in order to cause the voltage of a scan electrode to ramp down from a first voltage to a second voltage, a panel driver includes a falling ramp switch that repeats turn-on/turn-off operations, alternately coupling and de-coupling a low-level power supply to the scan electrode, resulting in a gradually falling ramp waveform. A switch controller generates a switching pulse to control the falling ramp switch. Each turn-on time of the switching pulse for the initial falling ramp waveform following a power-on of the plasma display device is controlled to be shorter than each turn-on time of the switching pulse for other falling ramp waveform. | 11-27-2008 |
20080315921 | DIGITAL FREQUENCY DETECTOR AND DIGITAL PHASE LOCKED LOOP USING THE DIGITAL FREQUENCY DETECTOR - A digital frequency detector and a digital phase locked loop (PLL) are provided. The digital frequency detector includes a first conversion unit which outputs a first frequency as first frequency information of a digital type using a first ring oscillator that operates in a high-level period of the first frequency, a second conversion unit which outputs a second frequency as second frequency information of a digital type using a second ring oscillator that operates in a high-level period of the second frequency, and an operation unit which outputs a digital frequency for the first frequency by calculating a ratio of the first frequency information to the second frequency information. | 12-25-2008 |
20090002278 | Plasma display and driving method thereof - A plasma display device, which gradually increases the current to the panel capacitors is disclosed. The display uses an inductor to reduce the current spike which would otherwise occur and create large electromagnetic interference. | 01-01-2009 |
20090027088 | HIGH RESOLUTION TIME DETECTING APPARATUS USING INTERPOLATION AND TIME DETECTING METHOD USING THE SAME - A high resolution time detecting apparatus using interpolation and a time detecting method using the same are provided. The time detecting apparatus includes a delayer which generates delayed signals by sequentially delaying a reference signal using a plurality of delay elements, a latch unit which outputs latch signals using the delayed signals, and an interpolation unit which outputs interpolated signals using input and output signals of the delay elements. As a result, a high resolution TDC using an interpolation and a time detecting method using the same provide improved performance of digital PLL, high resolution digital signal output at a low power consumption, and controlled circuit size. | 01-29-2009 |
20100237953 | DIGITAL PHASE DETECTOR, AND DIGITAL PHASE LOCKED LOOP INCLUDING THE SAME - A digital phase detector includes a quantization unit that quantizes a frequency of a reference signal to generate reference delay information and reference integer phase information, and quantizes a frequency of an oscillation signal to generate oscillation delay information and oscillation integer phase information. A first conversion unit converts the frequency of the reference signal into reference frequency information based upon the reference delay information and the reference integer phase information. A second conversion unit converts the frequency of the oscillation signal into oscillation frequency information based upon the oscillation delay information and the oscillation integer phase information. A calculation unit converts the reference frequency information and the oscillation frequency information into first and second phase information, respectively, and outputs a digital phase difference between the first phase information and the second phase information. | 09-23-2010 |
20150281696 | METHOD AND APPARATUS FOR ENCODING OF VIDEO USING DEPTH INFORMATION - Provided is a method for encoding an image using a depth information that includes selecting a current coding unit (CU); verifying an object information of the current CU from an object information obtained from a depth image; and verifying whether or not the current CU is composed of a single object based on the object information, and predicting a division structure of the current CU according to whether or not the current CU is composed of a single object. | 10-01-2015 |
20150281727 | METHOD AND APPARATUS FOR ENCODING OF VIDEO USING DEPTH INFORMATION - An image encoding method using a depth information includes determining a motion searching range in a total motion searching region for calculating a motion vector of a current coding unit (CU) based on an object information of the current CU; and determining an optimum motion vector of the current CU based on a motion information inside the motion searching range. | 10-01-2015 |
20150281735 | METHOD AND APPARATUS FOR ENCODING OF VIDEO USING DEPTH INFORMATION - A method of encoding an image using a depth information includes: extracting a depth value distribution information of a current largest coding unit (LCU); predicting a plurality of division structure candidates of the LCU based on the depth value distribution information; and determining an optimum division structure among the plurality of division structure candidates of the LCU based on at least one of coding efficiency and image quality. | 10-01-2015 |