Patent application number | Description | Published |
20080250144 | METHOD AND APPARATUS FOR CONTROLLING TRANSMISSION OF CONTENT DATA - Provided are a method and apparatus for controlling transmission of content data. In the method, a communication channel is initially established to transmit the content data, the content data is transmitted through the established communication channel, verification is performed a plurality of times to determine whether the content data is transmitted within an acceptable transmission range, and whether to continue the transmission of the content data is determined according to the verification result. Accordingly, when a client moves to a location outside a predetermined acceptable transmission range in a wireless environment, a server stops transmission of the content data. In addition, content data can be continuously transmitted regardless of interference caused by a temporary obstacle between a server and a client. | 10-09-2008 |
20080267396 | METHOD OF SHARING BUS KEY AND APPARATUS THEREFOR - A method and apparatus of sharing a bus key is provided, the method including receiving at a first device a device key, encrypted using an encryption key, from a storage device; decrypting the encrypted device key using a decryption key corresponding to the encryption key; creating a random number, and generating a bus key using the created random number and the decrypted device key, by which data to be transmitted through a bus can be encrypted using the bus key; and transmitting the generated bus key to a predetermined device connected to the first device via the bus. | 10-30-2008 |
20080285747 | ENCRYPTION-BASED SECURITY PROTECTION METHOD FOR PROCESSOR AND APPARATUS THEREOF - An encryption-based security protection method and apparatus are provided. The method includes generating a random key pattern table in order to allocate a plurality of random key patterns of original data to be transmitted; generating an address pattern table in order to allocate a plurality of address patterns of addresses in which the original data is stored; and generating a mapping table in order to map the plurality of random key patterns and the plurality of address patterns. The apparatus includes an address pattern table generation unit; a random key pattern table generation unit; a mapping table generation unit; and an internal memory unit which stores the address pattern table, the random key pattern table, and the mapping table. | 11-20-2008 |
20080289038 | METHOD AND APPARATUS FOR CHECKING INTEGRITY OF FIRMWARE - Provided are a method and apparatus for checking the integrity of firmware. The method includes storing a first hash function value of unhacked firmware for determining whether actual firmware of an external processor has been hacked; reading the actual firmware via a bus; calculating a second hash function value of the actual firmware; comparing the first hash function value with the second hash function value; and sharing a bus key with the external processor, based on the comparison result. | 11-20-2008 |
20090157781 | METHOD AND APPARATUS FOR GENERATING CONTENT IDENTIFIER AND PREVENTING ALTERATION OF THE CONTENT IDENTIFIER - A method and apparatus for generating a content identifier and preventing alteration of the content identifier are provided. The method includes generating at least one random number, generating location information for designating a plurality of locations within a content by using the at least one generated random number, extracting a plurality of parts of the content, which correspond to the generated location information, from the content, generating a integrity verification value based on the extracted parts of the content, which correspond to the generated location information, and generating the content identifier having the integrity verification value and the at least one generated random number. | 06-18-2009 |
20090204818 | METHOD AND APPARATUS FOR GENERATING AND VERIFYING ELECTRONIC SIGNATURE OF SOFTWARE DATA, AND COMPUTER READABLE RECORDING MEDIUM THEREOF - Provided are methods of generating and verifying an electronic signature of software data, wherein software data is split into a plurality of blocks, electronic signatures corresponding to each of the blocks are generated, and some of the electronic signatures are randomly selected for verification. Accordingly, a time required for verifying an electronic signature can be reduced while maintaining the advantages of an electronic signature system. | 08-13-2009 |
20090293058 | VIRTUAL SYSTEM AND METHOD OF RESTRICTING USE OF CONTENTS IN THE VIRTUAL SYSTEM - Provided is a method of restricting use of contents in a virtual system comprising at least one virtual machine implemented by applying virtualization technology to a predetermined device. The method includes: reading a first device identifier from the device in order to identify the device; reading a second device identifier, which is a device identifier allocated to the at least one virtual machine, from the at least one virtual machine; determining whether the first device identifier is identical to the second device identifier; and selectively restricting use of contents in the at least one virtual machine based on a result of the determining. | 11-26-2009 |
20100064378 | METHOD AND APPARATUS FOR MANAGING DIGITAL RIGHTS MANAGEMENT MODULE - Provided are a method and apparatus for managing a digital rights management (DRM) module. A DRM module for removing a DRM scheme applied to a content selected from among contents, and the content being protected with the DRM scheme, are received. The content is used by using the DRM module, and then the DRM module is partially or completely removed. | 03-11-2010 |
20100220977 | METHOD AND APPARATUS FOR PROTECTING AGAINST COPYING CONTENTS BY USING WiHD DEVICE - A method and apparatus for protecting against copying high definition (HD) contents transmitted in a wireless HD (WiHD) network by using a WiHD source or sink device, the method including: determining a type of copy protection of contents transmitted in the WiHD network; calculating accumulatively a number of media access control (MAC) sub-packets as a input counter information, wherein the MAC sub packets constitute a MAC payload including the contents; packetizing the type of copy protection and the input counter information into a MAC packet; and transmitting the MAC packet to a WiHD sink device. | 09-02-2010 |
20110103705 | IMAGE ENCODING METHOD AND APPARATUS, AND IMAGE DECODING METHOD AND APPARATUS - An image encoding method and an image decoding method, the image encoding method including: degrading a quality of a first image which is obtained through a sensor of an imaging device to generate a second image having a target resolution; generating additional information which represents a transform relationship between the first and second images; and transmitting the additional information and the second image. | 05-05-2011 |
20110157387 | METHOD AND APPARATUS FOR GENERATING IMAGE DATA - A method for generating image data includes adjusting an angle formed by each of a plurality of lenses attached to the imaging device relative to a reference plane based on a photography mode, obtaining at least one first image data using the plurality of adjusted lenses, and generating second image data corresponding to the photography mode using the at least one first image data. | 06-30-2011 |
20110169980 | APPARATUS AND METHOD FOR OBTAINING HIGH DYNAMIC RANGE IMAGE - Provided is an apparatus and method for obtaining a high dynamic range (HDR) image. The apparatus includes an image sensor generating a first image by applying different exposure times for units of different predetermined regions, an image separating unit separating the first image into images, each of which is composed of regions having an identical exposure time, an image restoring unit restoring the separated images in such a way that each of the separated images has a resolution that is the same as a resolution of the first image, and an image synthesizing unit synthesizing the restored images into a second image. | 07-14-2011 |
20120023240 | METHOD FOR GENERATING A COMMUNICATION LINK BETWEEN DEVICES, AND APPARATUS FOR SAME - A method and apparatus for establishing a communication link between a first device and a second device are provided. The method includes transmitting, to the second device, a connection request frame requesting to set a communication link; and receiving, from the second device, the connection request frame including first encoding selection information selecting an encoding method to be applied to content to be transmitted between the first and second devices from among a digital transmission content protection (DTCP) technology and a high-bandwidth digital content protection (HDCP) technology, a connection response frame approving a request to set the communication link by the connection request frame, the connection response frame including second encoding selection information selecting an encoding method identical to the encoding method selected by the connection request frame. | 01-26-2012 |
20120063697 | IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS - An image processing method and an image processing apparatus, the method including: generating a blurry image by using a maximum telephoto image among N (where N is a natural number equal to or greater than 2) live view images; generating an alpha map by using two or more images of the N live view images; and generating a soft focus image by combining the maximum telephoto image and the blurry image by using the alpha map. | 03-15-2012 |
20120120264 | METHOD AND APPARATUS FOR VIDEO STABILIZATION BY COMPENSATING FOR VIEW DIRECTION OF CAMERA - A video stabilization method includes: measuring an inter-frame camera motion based on a difference angle of a relative camera view direction in comparison with a reference camera view direction in each frame of a frame sequence of a video; generating a camera motion path of the frame sequence by using the inter-frame camera motion and determining a camera view direction adjustment angle based on a user's view direction by using the camera motion path; and compensating for the camera view direction by using the camera view direction adjustment angle in each frame. | 05-17-2012 |
20140247370 | METHOD AND APPARATUS FOR VIDEO STABILIZATION BY COMPENSATING FOR VIEW DIRECTION OF CAMERA - A video stabilization method includes: measuring an inter-frame camera motion based on a difference angle of a relative camera view direction in comparison with a reference camera view direction in each frame of a frame sequence of a video; generating a camera motion path of the frame sequence by using the inter-frame camera motion and determining a camera view direction adjustment angle based on a user's view direction by using the camera motion path; and compensating for the camera view direction by using the camera view direction adjustment angle in each frame. | 09-04-2014 |
20150036907 | APPARATUS AND METHOD FOR RECONSTRUCTING IMAGES BY SELECTING IMAGE RECONSTRUCTION MODE - Provided are a medical imaging apparatus and a method of reconstructing an image capable of selecting an image reconstruction mode. The method of reconstructing an image using a medical imaging apparatus may include displaying a user interface indicating at least one of a first mode for reducing time required for reconstruction of the image and a second mode for acquiring the image with high resolution, receiving an input selecting one of the first mode and the second mode as a selected mode, displaying at least one reconstruction option corresponding to the selected mode, receiving another input selecting at least one reconstruction option among the at least one displayed reconstruction option, and reconstructing the image according to the at least one selected reconstruction option and selected mode. | 02-05-2015 |