| Patent application number | Description | Published |
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| 20100104097 | SYSTEM AND METHOD FOR UCC CONTENTS PROTECTION - The present invention relates to a user created contents protection system and method. Copyright protection for protecting contents on user created contents is performed by using a contents upload server or a user terminal including a digital rights management (DRM) packager. Therefore, copyright protection of the user created contents is performed, and a user that legally provides user created contents can be rewarded. Also, when illegally distributed user created contents are generated, a person having initially attempted to distribute the contents is tracked to clarify responsibility. | 04-29-2010 |
| 20100125736 | METHOD AND SYSTEM FOR SHARING CONTENTS WITH REMOVABLE STORAGE - Disclosed is a content sharing method and system using an external memory. A method for transmitting encrypted contents to an external memory device list includes receiving a device list and public keys for devices, encrypting a domain key by using a public key to generate at least one device domain key, and transmitting the device domain key to the external memory. The method for performing encrypted contents further includes checking a public key of a device, extracting a device domain key corresponding to a public key checked by at least one device domain key stored in an external memory, decoding the extracted device domain key, decoding the encrypted contents by using the decoded device domain key, and performing the decoded encrypted contents. According to the present invention, since a single piece of contents stored in an external memory is reproducible by a plurality of devices, the existing problem of repeatedly settling the single piece of contents is solved and external memory resources are efficiently used. | 05-20-2010 |
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| 20080218442 | METHOD FOR DRIVING PLASMA DISPLAY PANEL - A method for driving a plasma display panel including a plurality of pixels, a plurality of first electrode lines, a plurality second electrode lines, and a plurality of third electrode lines crossing the first electrode lines and the second electrode lines, and being driven by dividing a frame into a plurality of subfields, each subfield including a reset period, an address period and a sustain discharge period, the method including: applying a first pre-address signal to a first group of third electrode lines among the plurality of third electrode lines in a pre-address period, the pre-address period being between the reset period and the address period in at least one of the subfields; and applying a second pre-address signal to at least a second group of third electrode lines among the plurality of third electrode lines in the pre-address period. | 09-11-2008 |
| 20090040209 | PLASMA DISPLAY AND DRIVING METHOD THEREOF - In a driver for driving an address electrode in a plasma display, a power recovery switch is coupled between a power recovery capacitor and the address electrode, and a driving switch is coupled between a power source for supplying an address voltage and the address electrode. A grounding switch is coupled between a ground terminal and the address electrode. The power recovery switch, the driving switch, and the grounding switch are formed in one integrated circuit. The address electrode driver turns on the power recovery switch during a first period within a period for varying a voltage at the address electrode from a 0V voltage to a Va voltage and turns on the power recovery switch during a second period within a period for varying the voltage at the address electrode from the Va voltage to the 0V voltage. The power recovery switch is turned on for about 62 ns. | 02-12-2009 |
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| 20080239114 | METHOD AND APPARATUS TO DETECT A DEAD PIXEL OF AN IMAGE SENSOR AND METHOD AND APPARATUS TO CAPTURE AN IMAGE FROM AN IMAGE SENSOR - A method and apparatus to detect a dead pixel in an image sensor having a pixel array to generate a plurality of image frames, and a method and apparatus to capture an image from the image sensor detect a dead pixel in the image sensor. A change of a scene of the image frames is sensed, and a detection operation to detect a dead pixel in the pixel array is performed if the change of the scene is sensed. | 10-02-2008 |
| 20100165827 | Victim System Detector, Method of Detecting a Victim System, Wireless Communication Device and Wireless Communication Method - A victim system detector for detecting whether a second wireless communication system uses frequency bands that are used by a first wireless communication system (detecting whether the second wireless communication system is a victim system) includes a correlator and a decision unit. The correlator calculates a correlation value between a frequency domain baseband signal associated with the first wireless communication system and a correlation sequence of the second wireless communication system. The decision unit determines, based on the correlation value, whether the second wireless communication system is a victim system. Therefore, the victim system is detected accurately and efficiently. | 07-01-2010 |
| 20110188615 | APPARATUS AND METHOD FOR DETECTING SIGNAL IN A SPATIAL MULTIPLEXING MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATION SYSTEM - A Spatial Multiplexing Multiple Input Multiple Output (SM-MIMO) communication system, which generates a Q matrix and an R matrix through QR decomposing a channel matrix in an array order corresponding to an order of transmission antennas of a signal transmission device, determines a detection order of transmission symbols included in a transmission symbol vector, QR decomposes a reception signal vector and generates the QR decomposed reception signal vector as a transformed reception signal vector, substitutes all of transmittable candidate symbols for a transmission symbol corresponding to a first detection order among the transmission symbols and sequentially removes interference in the transformed reception signal vector, detects candidate symbols of transmission symbols corresponding to a remaining detection order from the interference-removed transformed reception signal vector, combines the detected candidate symbols, detects candidate symbol vectors, and calculates Log-Likelihood Ratio values of bits included in the transmission symbols by using the detected vectors. | 08-04-2011 |
| 20110256676 | Methods of Manufacturing a Semiconductor Device - Methods of manufacturing a semiconductor device include forming integrated structures of polysilicon patterns and hard mask patterns on a substrate divided into at least an NMOS forming region and a PMOS forming region. A first preliminary insulating interlayer is formed on the integrated structures. A first polishing of the first preliminary insulating interlayer is performed until at least one upper surface of the hard mask patterns is exposed, to form a second preliminary insulating interlayer. The second preliminary insulating interlayer is etched until the upper surfaces of the hard mask patterns are exposed, to form a third preliminary insulating interlayer. A second polishing of the hard mask patterns and the third preliminary insulating interlayer is performed until the polysilicon patterns are exposed to form an insulating interlayer. The polysilicon patterns are removed to form an opening. A metal material is deposed to form a gate electrode pattern in the opening. | 10-20-2011 |
| 20120122283 | METHODS OF MANUFACTURING A SEMICONDUCTOR DEVICE - A method includes forming a plurality of dummy gate structures on a substrate, each dummy gate structure including a dummy gate electrode and a dummy gate mask, forming a first insulation layer on the substrate and the dummy gate structures to fill a first space between the dummy gate structures, planarizing upper portions of the first insulation layer and the dummy gate structures, removing the remaining first insulation layer to expose a portion of the substrate, forming an etch stop layer on the remaining dummy gate structures and the exposed portion of the substrate, forming a second insulation layer on the etch stop layer to fill a second space between the dummy gate structures, planarizing upper portions of the second insulation layer and the etch stop layer to expose the dummy gate electrodes, removing the exposed dummy gate electrodes to form trenches, and forming metal gate electrodes in the trenches. | 05-17-2012 |
