Patent application number | Description | Published |
20090263029 | METHOD AND APPARATUS FOR ENCODING/DECODING 3D MESH INFORMATION - A method and apparatus for encoding and decoding three-dimensional mesh information are provided. The method and apparatus separately encode/decode order information of elements, such as vertices and faces, of a three-dimensional mesh model (original model) in consideration of a change in an element order during encoding three-dimensional mesh information for the original model. The method for encoding three-dimensional mesh information includes the steps of: encoding the three-dimensional mesh information and outputting an encoded bit-stream; calculating order information of at least one element in an original model contained in the three-dimensional mesh information; encoding the element order information; and generating packets of the encoded bit-stream, wherein the encoded element order information is inserted into the packet. | 10-22-2009 |
20090278844 | METHOD AND APPARATUS FOR ENCODING/DECODING 3D MESH INFORMATION INCLUDING STITCHING INFORMATION - Provided are encoding and decoding stitching information generated when the 3D mesh model that is the non-manifold or non-orientable model is converted into orientable and manifold models upon encoding the 3D mesh information of the 3D mesh model. The method of encoding 3D mesh information includes the steps of: encoding the 3D mesh information to output an encoded bitstream; encoding stitching information of elements contained in the 3D mesh information, the stitching information having a total number of duplicated original elements and, for each of the duplicated original elements, the duplication number, original-element identification information and duplicated-element identification information; and generating a packet of the bitstream, wherein the encoded stitching information is inserted into the packet. | 11-12-2009 |
20100195898 | METHOD AND APPARATUS FOR IMPROVING QUALITY OF DEPTH IMAGE - A method and apparatus for enhancing quality of a depth image are provided. A method for enhancing quality of a depth image includes: receiving a multi-view image including a left image, a right image, and a center image; receiving a current depth image frame and a previous depth image frame of the current depth image frame; setting an intensity difference value corresponding to a specific disparity value of the current depth image frame by using the current depth image frame and the previous depth image frame; setting a disparity value range including the specific disparity value; and setting an intensity difference value corresponding to the disparity value range of the current depth image frame by using the multi-viewpoint image. | 08-05-2010 |
20100315486 | STEREOSCOPIC VIDEO SERVICE PROVIDING/RECEIVING METHOD AND APPARATUS IN DIGITAL BROADCASTING SYSTEM - Provided is a stereoscopic video service providing method using a stereoscopic video stream including first and second video streams in a digital broadcasting system. The stereoscopic video service providing method includes: generating information on the first video stream and information on the second video stream; inserting an identifier of the information on the second video stream into the information on the first video stream; and transmitting the first video stream and the information on the first video stream and the second video stream and the information on the second video stream through separate transmission channels, respectively. | 12-16-2010 |
20110010739 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING STEREOSCOPIC VIDEO IN DIGITAL BROADCASTING SYSTEM - Provided is a method for transmitting a stereoscopic video in a digital broadcasting system, the stereoscopic video being composed of a left view and a right view. The method includes: generating information indicating that the video is stereoscopic, information about a composition type of the stereoscopic video, and additional information based on the composition type; and transmitting the stereoscopic video and the generated information. The composition type is to compose the stereoscopic video of a single or two encoding streams by using the left view and the right view. In the case of a single stream mode in which the stereoscopic video is composed of the single encoding stream, the additional information includes information about positions of the left and right views. In the case of a dual stream mode in which the stereoscopic video is composed of the two encoding streams, the additional information includes information indicating whether the respective encoding streams are the left view or the right view and information indicating correlation between the respective encoding streams. | 01-13-2011 |
20110175985 | METHOD OF GENERATING CONTENTS INFORMATION AND APPARATUS FOR MANAGING CONTENTS USING THE CONTENTS INFORMATION - The present invention relates to a method of generating contents information for managing contents including stereo-scopic contents being two-dimensional contents and three dimensional contents, and an apparatus for managing contents, the method including the steps of, when there is a scene change of contents, adding a second field including information on each of a plurality of scenes corresponding to a plurality of types, respectively, to the contents information. | 07-21-2011 |
20120044321 | APPARATUS AND METHOD FOR MONITORING BROADCASTING SERVICE IN DIGITAL BROADCASTING SYSTEM - A broadcasting service monitoring apparatus includes: a stream separation unit to extract a partial stream from an inputted 3D stream and separate detailed stream configuration and service-related information and a stream for 3D video service from the 3D stream; a configuration information analysis unit to minutely analyze the separated service-related information and the separated stream for 3D video service; a 2D image decoding unit to decode the separated stream for 3D video service into a predetermined image; an image separation unit to separate one screen of the decoded predetermined image into two screens and generate two images; a 3D image reproduction unit to reproduce the generated two images; a depth information extraction unit to extract depth information for 3D video service from the generated two images; and a 3D information representation unit to represent the analyzed values and the extracted depth information. | 02-23-2012 |
20120062698 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DATA IN COMMUNICATION SYSTEM - Disclosed is an apparatus and method for transmitting/receiving reference image data and 3D additional image data in 3D image data so as to provide a 3D image in a digital broadcasting system. In the method, a basic image and a 3D additional image in a 3D image of a 3D broadcasting service is processed in a stereoscopic image format of one of a side-by-side method and a top-down method. The basic image and the 3D additional image processed in the stereoscopic image format are encoded to a basic image stream and a 3D additional image stream. The encoded basic image stream and the encoded 3D additional image stream are multiplexed to a 3D image stream of a single stream using a dual stream method, and the multiplexed 3D image stream is then transmitted. | 03-15-2012 |
20120212578 | METHOD AND APPARATUS OF CODING STEREOSCOPIC VIDEO - Disclosed are a method and an apparatus for coding a stereoscopic video. The method of coding a stereoscopic video includes coding an original reference image; performing preprocessing based on the original reference image, a decoded reference image, and an original additional image; coding the original addition image based on the original additional image and an improved decoding image obtained by performing the preprocessing; and performing postprocessing based on the original additional image and a decoded additional image. | 08-23-2012 |
20120274741 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING STEREOSCOPIC VIDEO - A method of receiving stereoscopic video according to the present invention includes receiving a bit stream including image information, extracting a base image stream corresponding to a base image and an additional image stream corresponding to an additional image from the bit stream, generating the base image and the additional image by decoding the base image stream and the additional image stream, respectively, and generating a left image and a right image by using at least one of the base image and the additional image. According to the present invention, | 11-01-2012 |
20130083165 | APPARATUS AND METHOD FOR EXTRACTING TEXTURE IMAGE AND DEPTH IMAGE - Provided are an apparatus and method for extracting a texture image and a depth image. The apparatus of the present invention may project a pattern image on a target object, may capture a scene image on which the target image is reflected from the target object, and may simultaneously extract the texture image and the depth image using the scene image. | 04-04-2013 |
20130114767 | APPARATUS AND METHOD FOR ENHANCING CHANNEL ESTIMATION ACCURACY IN COMMUNICATION SYSTEM - An apparatus and method for calculating a correlation value using a first channel impulse response estimated from a received signal, determining a weight value based on the correlation value, applying the weight value to the first channel impulse response, and estimating a second channel impulse response is provided. | 05-09-2013 |
20130128732 | APPARATUS AND METHOD FOR FAST LOAD BALANCING BANDWIDTH ALLOCATION BASED ON BINARY SEARCH - An apparatus and method for fast load balancing bandwidth allocation based on a binary search may be provided, wherein the apparatus may include a bandwidth allocation request receiving unit to receive a bandwidth allocation request signal from at least one modem, and a bandwidth allocation processing unit to allocate a bandwidth to an upstream channel of the at least one modem, using a load balancing algorithm, in response to the received bandwidth allocation request signal. | 05-23-2013 |
20130129021 | AUTOMATIC GAIN CONTROLLING DEVICE, ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) RECEIVER EMPLOYING HIGH-ORDER QUADRATURE AMPLITUDE MODULATION (QAM) AND USING AUTOMATIC GAIN CONTROLLING DEVICE, AND MANUFACTURING METHOD OF AUTOMATIC GAIN CONTROLLING DEVICE - Provided is an automatic gain controlling device that may prevent deterioration in performance of an orthogonal frequency division multiplexing (OFDM) receiver, on a cable network that performs communication by an orthogonal frequency division multiplexing (OFDM) scheme using high-order quadrature amplitude modulation (QAM), the automatic gain controlling device including a power computing unit to compute a power of a signal received by the OFDM receiver, and a gain controller to control a gain of the received signal based on the computed power of the received signal. | 05-23-2013 |
20130148028 | DYNAMIC HYBRID BROADCASTING METHOD AND APPARATUS FOR REDUCING POOR RECEPTION AREA OF WIRELESS DIGITAL BROADCASTING SIGNAL - Provided is a broadcasting receiver including a broadcasting signal receiving unit to receive a broadcasting signal via a broadcasting network, a viewing possibility determining unit to determine whether it is possible for a viewer to view the broadcasting signal, a multicasting signal receiving unit to receive a multicasting signal via a wireless communication network, a switching and combining unit to combine or switch the received broadcasting signal and the multicasting signal, and a controlling unit to request the multicasting signal transmitting unit to multicast the multicasting signal based on the determination result, to request the multicasting signal receiving unit to receive the multicasting signal, and to control the switching and combining unit depending on whether the multicasting signal is received. | 06-13-2013 |
20130160048 | SYSTEM AND METHOD OF PROVIDING SIGN LANGUAGE BROADCASTING SERVICE - Provided is a system and method of providing a sign language broadcasting service to viewers having hearing impairments, and more particularly, the system and method of providing a sign language broadcasting service that may enable a user to select an option of viewing only a broadcast image, or an option to viewing both the broadcast image and a sign language interpreting image, by transmitting the broadcast image and the sign language interpreting image using different transport streams. | 06-20-2013 |
20130160069 | APPARATUS AND METHOD FOR BONDING BROADCAST CHANNEL - An apparatus for bonding a broadcast channel, including an encoder to output at least one broadcasting program in a form of a transport stream (TS) packet by encoding the at least one broadcasting program, a multiplexer to multiplex the TS packets by mixing the TS packets with signaling information, and a transmitter to transmit the multiplexed TS packet by distributing the multiplexed TS packet via bonded channels, and the transmitter transmits control packets to control the TS packets along with the TS packets through the bonded channels via which the TS packets is transmitted is provided. | 06-20-2013 |
20130179933 | HEADEND DEVICE FOR CABLE NETWORK AND METHOD OF OPERATING HEADEND DEVICE - Disclosed is a headend device for a cable network and a method of operating the headend device. The headend device for a hybrid fiber coaxial (HFC)-based cable network may transmit a digital video data stream and an Internet Protocol (IP) data stream input using various input interface standards integratedly based on a frequency channel standard for the cable network to improve efficiency. | 07-11-2013 |
20130271568 | TRANSMITTING SYSTEM AND RECEIVING APPARATUS FOR PROVIDING HYBRID SERVICE, AND SERVICE PROVIDING METHOD THEREOF - A receiving apparatus includes a first receiving unit that receives a first signal comprising an information descriptor to describe service characteristics, reference data, and additional data reference information through a RF communication network; a second receiving unit that can be connected to an IP network; a demux unit that detects the information descriptor from the first signal; a first signal processing unit that processes the reference data; a control unit that, if it is determined as a hybrid service depending on the information descriptor, controls the second receiving unit to access a source apparatus corresponding to the additional data reference information; a second signal process unit that, if a second signal comprising additional data is received through the IP communication network, processes the additional data; and an output unit that synchronizes and outputs the reference data and the additional data. | 10-17-2013 |
20130271657 | RECEIVING APPARATUS FOR PROVIDING HYBRID SERVICE, AND HYBRID SERVICE PROVIDING METHOD THEREOF - A receiving apparatus includes a first receiving unit that receives signaling information and a first signal comprising reference data through a radio frequency broadcast network; a control unit that detects a plurality of additional data source information from the signaling information; a second receiving unit that accesses an internet protocol communication network, and receives a second signal comprising additional data from a source apparatus corresponding to each of the plurality of additional data source information; a storage unit that stores the reference data contained in the first signal and the additional data contained in the second signal; and an output unit that processes, synchronizes and outputs each of the reference data and additional data. | 10-17-2013 |
20130283331 | METHOD AND APPARATUS FOR INSERTING BROADCAST PROGRAM BY DETECTING AVAILABLE CHANNEL OVER HYBRID FIBER COAX NETWORK OR OPTICAL CABLE NETWORK - An apparatus for combining a broadcasting channel may include a channel detector to detect a vacant Radio Frequency (RF) broadcasting channel used by a photoelectric converter that converts a first broadcast program as an optical signal to a first RF signal, a broadcast receiving interface to receive at least one second broadcast program, a broadcast modulator to generate a second RF signal by modulating the second broadcast program using the vacant RF broadcasting channel, and a channel combiner to combine a broadcasting channel used for the first RF signal and the vacant RF broadcasting channel. | 10-24-2013 |
20140087683 | METHOD AND APPARATUS OF TEMPORARY LOCAL TRANSMISSION FOR DISASTER INFORMATION DELIVERY - Disclosed is a method of receiving, by a terminal, an additional network service provided through a temporary base station disposed temporarily or locally in order to transfer disaster information, including: receiving information on the additional network through an existing network service provided by a base station; verifying whether the terminal is handed over to the additional network based on the information on the additional network; and receiving the additional network service through the additional network. According to the present invention, even when a communication service disability occurs due to a flood of telephone traffic in an area where a disaster situation or an event occurs, a communication service can be provided through the additional network in terms of the communication service and a broadcasting channel that provides information specific to the disaster situation or event can be temporarily or locally additionally provided. | 03-27-2014 |
20140112395 | METHOD AND APPARATUS FOR DECODER BUFFERING IN HYBRID CODED VIDEO SYSTEM - Disclosed is a transport device in a video system which uses a hybrid video codec. The transport device includes a first video encoder which encodes a first video using a first video codec, a second video encoder which encodes a second video using a second video codec, and a delay buffer for synchronizing a delay time for the first video and the second video, based on a buffer size of if a first transport stream system target decoder (T-STD) stipulated in the first video encoder and a buffer size of a second T-STD stipulated in the second video encoder. | 04-24-2014 |
20140133597 | METHOD FOR TRANSMITTING AND RECEIVING DATA IN OFDM SYSTEM AND APPARATUS THEREOF - Disclosed are a method for transmitting and receiving data and an apparatus thereof, and more particularly, a method for transmitting and receiving data and an apparatus thereof in an orthogonal frequency division multiplexing (OFDM) system. The method for transmitting data in an OFDM system according to the present invention includes encoding and modulating data to be transmitted, configuring the modulated data by a frame constituted by N (an integer larger than 0) OFDM symbols, and transmitting the configured frame, in which the frame includes a first OFDM symbol including a pilot symbol and a second OFDM symbol including lower-order modulated than the modulated data. | 05-15-2014 |
20140160541 | HOLOGRAPHIC IMAGE IDENTIFICATION APPARATUS AND METHOD, AND HOLOGRAPHIC IMAGE SELECTIVE RECONSTRUCTION APPARATUS, METHOD AND SYSTEM - Disclosed is an apparatus for identifying authenticity of a holographic image, which is capable of identifying the authenticity by comparing a holographic image reconstructed by irradiating light having the same characteristic as an irradiation characteristic of a first reference beam used in generating the holographic image with an original image. Accordingly, since an image or a pattern is recorded by using a reference beam having a specific angle and a specific laser wavelength band in making a hologram, replication or copying for forgery is prevented from being easy. | 06-12-2014 |
20140165125 | BROADCASTING SYSTEM AND BROADCASTING METHOD OF PROVIDING MULTI-PICTURE - A broadcasting transmitting apparatus of providing a multi-picture may include a multi-picture generator configured to divide an acquired video into a first video and a second video; a first video encoder configured to encode the first video; a second video encoder configured to encode the second video; a multiplexer configured to multiplex the first and second videos to a single stream video; and a transmitter configured to modulate the multiplexed single stream video to transmit the modulated single stream video to a receiving apparatus through a broadcasting network. | 06-12-2014 |
20140211812 | DEMULTIPLEXING APPARATUS, MULTIPLEXING APPARATUS, AND MULTI-CHANNEL TRANSMISSION AND RECEPTION METHOD USING THE SAME - A demultiplexing apparatus, a multiplexing apparatus, and a multi-channel transmission and reception method using the same are provided. The demultiplexing apparatus includes a broadcasting data reception unit for separating a broadcasting data stream into N input packets, an output packet generation unit for generating (N+1) output packets by connecting a pre-header, including a field for multi-channel transmission, with each of the N input packets, and a packet distribution unit for distributing the (N+1) output packets over at least two channels. The multiplexing apparatus includes a packet restoration unit for detecting first field information for restoration and second field information for synchronization from each of pre-headers included in (N+1) output packets received through at least two channels and generating N restoration packets using the first field information and an output synchronization unit for performing output timing synchronization between the N restoration packets using the second field information. | 07-31-2014 |
20140211861 | METHOD AND SYSTEM FOR PROVIDING HIGH DEFINITION (HD) BROADCASTING SERVICE AND ULTRA HIGH DEFINITION (UHD) BROADCASTING SERVICE - A method of transmitting a high definition (HD) image and an ultra high definition (UHD) image, the method including obtaining a first HD image by down-scaling an original UHD image, obtaining at least one of a second HD image and a half-resolution UHD image by down-scaling the original UHD image, encoding the first HD image, encoding at least one of the second HD image and the half-resolution UHD image, generating a first transmission stream by multiplexing and synchronizing the encoded first HD image, generating a second transmission stream by multiplexing and synchronizing at least one of the encoded second HD image and the encoded half-resolution UHD image, transmitting the first transmission stream via a first transmission channel, and transmitting the second transmission stream via a second transmission channel differing from the first transmission channel is provided. | 07-31-2014 |
20140215530 | METHOD AND SYSTEM FOR TRANSMITTING BROADCAST AND DATA STREAM AND METHOD AND APPARATUS FOR CONVERTING BROADCAST AND DATA STREAM IN HFC-BASED CABLE NETWORK - A method for transmitting broadcast and data streams in an HFC-based cable network includes a first transmission step of a broadcast transmission apparatus sending broadcast and data service streams in an IP-based stream or RF signal form through an optical section up to a cell node that is a contact point between the optical section and a cable section of a cable network and a second transmission step of the cell node converting the broadcast and data service streams into one of RF signal, IP-based stream, and RF/IP convergence service stream forms depending on a service type of a subscriber terminal and sending the converted broadcast and data service streams to the subscriber terminal through the cable section. | 07-31-2014 |
20140215547 | METHOD AND SYSTEM FOR PROVIDING REALISTIC BROADCASTING IMAGE - A method of providing a realistic broadcasting image including an ultra high definition (UHD) image, the method including generating a first encoding stream from a high definition (HD) image, generating a second encoding stream from at least one of a UHD image and an image restored from the first encoding stream, generating a third encoding stream from at least one of the UHD image and an image restored from the second encoding stream, generating a first transmission stream by applying at least one of packetization, synchronization, and multiplying to the first encoding stream and the second encoding stream, generating a second transmission stream by applying at least one of packetization and synchronization to the third encoding stream, transmitting the first transmission stream via a first transmission channel, and transmitting the second transmission stream via a second transmission channel having a lower transmission capacity than the first transmission channel. | 07-31-2014 |
20140269608 | OFDM TRANSMISSION METHOD AND APPARATUS - Disclosed are an OFDM transmission method and apparatus. In the present invention, channel bonding information includes at least one of information indicating whether or not a channel through which the transport frame is transmitted is a bonded channel, information indicating how many channels form the bonded channel, and information about a transmission frequency of each of the bonded channels. | 09-18-2014 |
20140286415 | VIDEO ENCODING/DECODING METHOD AND APPARATUS FOR SAME - According to the present invention, a video decoding method comprises: a step of decoding a first bitstream corresponding to a base layer image based on first decoding information corresponding to the image that belongs to the view which is different from the view to which the base layer image belongs; and a step of decoding a second bitstream corresponding to an enhancement layer image based on second decoding information corresponding to the base layer image and third decoding information corresponding to the image that belongs to the view which is different from the view to which the enhancement layer image belongs. | 09-25-2014 |
20140286468 | METHOD AND APPARATUS FOR COMPENSATING FOR VARIABLE SYMBOL TIMING USING CYCLIC PREFIX IN NON-SYNCHRONIZED OFDM SYSTEM - Disclosed are a method and apparatus for estimating symbol timing in a non-synchronized OFDM system. The present invention includes synchronizing a frame of a received signal, estimating the symbol timing of each symbol of the frame based on the synchronization, compensating for the symbol timing using a phase difference attributable to a Symbol Timing Offset (STO), variably changing within a Cyclic Prefix (CP) interval due to the frequency offset of a sampling clock and thermal noise, and performing channel equalization using a preamble based on output including corrected phase rotation. | 09-25-2014 |
20140307830 | APPARATUS AND METHOD FOR OFFSET COMPENSATION IN HIGH-ORDER MODULATED ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) TRANSMISSION - An apparatus for offset compensation in high-order modulated orthogonal frequency division multiplexing (OFDM) transmission, the apparatus including a transmitter to configure a pilot signal for transmission and reception synchronization and distortion estimation as a frame, and transmit the frame, and a receiver to estimate a channel distortion of a received signal by estimating and compensating for a clock offset and a frequency offset with respect to the received signal. | 10-16-2014 |
20140327739 | APPARATUS AND METHOD FOR RECEIVING 3D DIGITAL BROADCASTING, AND APPARATUS AND METHOD FOR CONVERTING IMAGE MODE - An apparatus and method of receiving 3D digital broadcasting capable of frame compatibility and service compatibility even in the existing display apparatus, regardless of whether a 3D service mode is a frame-compatible or service-compatible, are provided. The apparatus of receiving broadcast may include: a broadcast signal receiving and demodulating unit that receives and demodulates broadcast signals to extract transport streams; a demultiplexing unit that extracts broadcast program information including a broadcast service mode, a video format and an encoding type of elementary streams, and elementary streams from the demodulated transport streams; and a video processing unit that processes the video signals and outputs the video signals to the display device, based on the broadcast program information obtained by the demultiplexing unit and the display mode of the apparatus of receiving broadcast set by a user. | 11-06-2014 |
20140344470 | METHOD AND APPARATUS FOR STREAMING SERVICE FOR PROVIDING SCALABILITY AND VIEW INFORMATION - A method and apparatus for a streaming service to provide scalability and view information are provided. When a scalable video or multi-view video is transmitted using a Moving Picture Experts Group-2 (MPEG-2) system, scalability information or view information regarding the scalable video or multi-view video in a payload may be used. Using the scalability information or view information, a packetized scalable video or multi-view video may be efficiently adapted to various terminal performances, various network characteristics, a specific user preference, and the like. | 11-20-2014 |
20140354777 | APPARATUS AND METHOD FOR OBTAINING SPATIAL INFORMATION USING ACTIVE ARRAY LENS - Disclosed herein are an apparatus and method for obtaining spatial information using an active array lens. In order to obtain spatial information in the apparatus for obtaining spatial information including the active microlens, at least one active pattern for varying a microlens' focus is determined by controlling voltage applied to a pattern of the active microlens, and at least one projection image captured by the at least one active pattern is obtained in a time-division unit. | 12-04-2014 |
20140362676 | OPTICAL INFORMATION PROCESSING APPARATUS AND METHOD FOR CONTROLLING SAME - The present invention relates to an optical information processing apparatus and to a method for controlling same. Provided is an optical information processing apparatus and a method for controlling same, the optical information processing apparatus comprising: a light source for irradiating light; an optical modulator for modulating the light irradiated from the light source; an optical system for collecting the light modulated by the optical modulator and enabling the modulated light to be incident to an optical medium; a stage on which the optical medium is placed; an optical detection unit for detecting the pattern of the light reflected from the optical medium; and a control unit for analyzing the pattern of the light detected by the optical detection unit so as to control the optical system and the location of the stage. | 12-11-2014 |
20150020124 | METHOD AND APPARATUS FOR PROVIDING BROADCAST CONTENTS - Provided are a method and an apparatus for providing broadcast contents and broadcasting service provision information by employing a cloud storage control server using a cloud storage, in which the broadcast contents and the broadcasting service provision information may be provided through a communications network and a broadcasting network operated by a broadcaster and thus, various broadcast contents may be effectively provided to a broadcast content receiver, the broadcast contents may also be stored in the cloud storage and thus, security for the broadcast contents may be improved and a bulk local storage may not be required. | 01-15-2015 |
20150033251 | NETWORK PROTOCOL FOR CONTENTS PROTECTION IN DIGITAL CABLE BROADCASTING SERVICE AND CONDITIONAL ACCESS SYSTEM USING THE PROTOCOL - Disclosed are a network protocol for contents protection in a digital cable broadcasting service and a conditional access system using the protocol. A method for renewing conditional access client software (CACS) by a conditional access module in a renewable conditional access system (RCAS) may include: receiving an RCAS announcement message from a headend; transmitting to the headend a key registration request message for requesting an authorization key when the RCAS announcement message is authenticated; receiving a key registration response message including the authorization key from the headend; and generating security factors based on the authorization key and renewing the CACS by using the security factors. | 01-29-2015 |
20150033284 | DIGITAL MULTIMEDIA BROADCASTING APPARATUS AND METHOD FOR MULTIPLE-DRM SERVICE - A method for receiving contents using a mobile terminal according to the present invention is provided. The method includes generating a security channel connected to system being in charge of a service and content protection (SCP) client through an agent downloaded and installed in a mobile terminal; downloading and installing one or multiple SCP client software of different kind from the system through the security channel generated by the agent; and playing back the service or content provided in protected state by a content provider among the one or multiple SCP client software of different kind by driving the decodable SCP client software. | 01-29-2015 |
20150077515 | METHOD AND DEVICE FOR COMPENSATING FOR SYNCHRONIZATION BETWEEN LEFT AND RIGHT IMAGE FRAMES IN THREE-DIMENSIONAL IMAGING SYSTEM, AND REPRODUCTION DEVICE AND METHOD - An apparatus for compensating for synchronization between left and right image frames in a stereoscopic system includes a similarity calculating unit configured to calculate similarity between left and right image frames on the basis of a scene change point in time of the left and right image frames, a left and right image frame difference value extracting unit configured to search a stereoscopic pair on the basis of the similarity and extract a temporal frame difference value between the left and right image frames, and a left and right image frame synchronization compensating unit configured to perform synchronization by shifting any one of the the left and right image frames on a time axis on the basis of the left and right image frame difference value. | 03-19-2015 |