| Patent application number | Description | Published |
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| 20090238271 | APPARATUS AND METHOD FOR ENCODING AND DECODING USING ALTERNATIVE CONVERTER ACCODING TO THE CORRELATION OF RESIDUAL SIGNAL - Provided is an apparatus and method for encoding and decoding using alternative transform units according to the correlation of residual signals. The video encoding apparatus includes a first transforming unit for performing discrete cosine transform (DCT), first quantization, first inverse quantization, and inverse DCT on a block basis onto residual coefficients generated after intra frame prediction or inter frame prediction; a second transforming unit for performing discrete sine transform (DST), second quantization, second inverse quantization, and inverse DST on a block basis onto the residual coefficients; a selecting unit for selecting one having a high compression rate between the first and second transforming units for each block through performing rate-distortion optimization; and a flag marking unit for recording information about the selected transforming unit at a flag bit provided on a macroblock basis. | 09-24-2009 |
| 20090271525 | RTSP-BASED PROGRESSIVE STREAMING METHOD - Provided is a real-time streaming protocol (RTSP) based progressive streaming method. The progressive streaming method based on a real-time streaming protocol, wherein a server transfers SDP information and performs streaming of a contents file to a client connected, the method including the steps of: a) if a “pause” request message is received from the client, transmitting a “pause” response message including the number of TCP packets already transferred to the client, and pausing streaming of the contents file; and b) if a “replay” request message including the number of the TCP packet to be transferred is received from the client, transmitting a “replay” response message and restarting transmission of the TCP packets from the next TCP packet to the TCP packet transferred to the client before the contents file is paused. | 10-29-2009 |
| 20100046552 | TIME-STAMPING APPARATUS AND METHOD FOR RTP PACKETIZATION OF SVC CODED VIDEO, AND RTP PACKETIZATION SYSTEM USING THE SAME - Provided are a time-stamping apparatus and method for RTP packetization of a SVC coded video, and a RTP packetization system using the same. The time stamping apparatus includes: a NAL unit classifier for checking a header of an input NAL unit and classifying the input NAL units based on a picture property; a first timestamp calculator for calculating a RTP timestamp value for a NAL unit classified as a key picture by the NAL unit classifier; a second timestamp calculator for calculating a RTP timestamp value for a NAL unit classified as a non-key picture by the NAL unit classifier; and a controller for setting a RTP timestamp value for an instantaneous decoding refresh (IDR) picture and controlling the first and second timestamp calculators for calculating a RTP timestamp value of a corresponding NAL unit. | 02-25-2010 |
| 20100046613 | MULTI-DIMENSIONAL AND MULTI-STAGE TRANSFORMING APPARATUS AND METHOD - Provided are an apparatus for multi-stage transforming a plurality of unit blocks in multi-dimension that can improve compression efficiency of video data by collecting Discrete Cosine Transforming (DCT) coefficients of neighboring blocks and performing an additional transformation based on the DCT coefficients of an original picture and a differential picture. The method includes the steps of: performing a Discrete Cosine Transform (DCT) on inputted picture data and selecting R blocks of a predetermined size from DCT picture data, where R is a natural number equal to or greater than 2; arranging DCT coefficients of each of the selected R blocks according to each frequency in one-dimension; and performing one-dimensional transformation again on the DCT coefficients arranged in one-dimension. | 02-25-2010 |
| 20100067522 | METHOD FOR DETERMINING PACKET TYPE FOR SVC VIDEO BITSTREAM, AND RTP PACKETIZING APPARATUS AND METHOD USING THE SAME - Provided are a method for determining the packet type for a Scalable Video Coded (SVC) video bitstream, and a Real-time Transport Protocol (RTP) packetizing apparatus and method using the same. The method for determining a packet type for a Scalable Video Coded (SVC) video bitstream, which includes the steps of: a) deriving temporal and spatial hierarchy information between Network Abstraction Layer (NAL) units from field information defined in the NAL unit headers of scalable layers; b) detecting the type of encoding information by applying combined scalability encoding to the hierarchical structure of the Scalable Video Coding (SVC); and c) determining a Real-time Transport Protocol (RTP) packet type for the corresponding SVC video bitstream by using the derived temporal and spatial hierarchy information between the NAL units and the detected type of encoding information. | 03-18-2010 |
| 20100284459 | APPARATUS FOR ENCODING AND DECODING IMAGE USING ADAPTIVE DCT COEFFICIENT SCANNING BASED ON PIXEL SIMILARITY AND METHOD THEREFOR - The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes: a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients. | 11-11-2010 |
| Patent application number | Description | Published |
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| 20080270888 | Method For Generating Metadata For Symbolic Music of Traditional Music, and Apparatus For Coding/Decoding Multimedia Data Using the Same - Provided is a method for generating metadata for symbolic music and a music restoring apparatus employing the same, and more particularly, a method for generating metadata for ornaments existing in the Korean traditional music and an apparatus for restoring multimedia including the same. A method for generating metadata for music, which is suggested in the present invention, includes the steps of: a) generating an extensible Markup Language (XML) notation for ornaments; b) generating a complete form of metadata including the XML notation; and c) generating metadata for entire music by using the complete form of metadata and the XML notation. | 10-30-2008 |
| 20080271079 | Extended Description to Support Targeting Scheme, and Tv Anytime Service and System Employing the Same - The present research relates to description supporting a targeting scheme, more particularly, to an extended description structure supporting a targeting scheme and a TV-Anytime service providing method and system employing the same based on Moving Picture Experts Group 21 (MPEG-21) Usage Environment Description (UED) tools. The TV-Anytime service providing system employing the extended description structure includes a service providing apparatus for generating package metadata including user information and usage environment information; and a user device for acquiring the package metadata including user information and usage environment information from the service providing apparatus through diverse access networks. | 10-30-2008 |
| 20090024644 | Extended Multimedia File Structure and Multimedia File Producting Method and Multimedia File Executing Method - Provided are an extended multimedia file structure, a multimedia file producing method, and a multimedia file executing method. The extended multimedia file structure includes: a metadata section including a media initial object descriptor (IOD) field and at least one track pointer; and a media data section including at least one media block indicated by the track pointer, wherein the at least one track pointer indicates a detail media resource contained in an embedded multimedia file or an external multimedia file. | 01-22-2009 |
| 20090164986 | Extended package scheme to support application program downloading, and system and method for application porogram service using the same - Provided is a package scheme to support application program downloading and a method and a system for an application program download service using the same in a system such as a TV-Anytime system. A method for forming a package capable of supporting application program downloading includes the steps of: a) generating metadata on general information of the application program including type information of the application program; b) generating metadata on detailed information of the application program including version information of the application program; c) generating metadata on usage environment of a terminal to which the application program is applied; and d) generating a package including the application program and all the metadata. | 06-25-2009 |
| 20090290635 | Method and system for optimal video transcoding based on utility function descriptors - Techniques for generating utility-based descriptors from compressed multimedia information are disclosed. A preferred method includes the steps of receiving least a segment of compressed multimedia information, determining two or more portions of utility based descriptor information based on one or more adaptation operations, each corresponding to a unique target rate, adapting the compressed multimedia segment by each the portions of utility based descriptor information to generate adapted multimedia segments, using a quality management method to generate measurement for each adapted multimedia segment, and generating a utility based descriptors based on the portions of utility based descriptor information and corresponding quality measurements. | 11-26-2009 |
| 20090316778 | Method And System For Optimal Video Transcoding Based On Utility Function Descriptors - Techniques for generating utility-based descriptors from compressed multimedia information are disclosed. A preferred method includes the steps of receiving least a segment of compressed multimedia information, determining two or more portions of utility based descriptor information based on one or more adaptation operations, each corresponding to a unique target rate, adapting the compressed multimedia segment by each the portions of utility based descriptor information to generate adapted multimedia segments, using a quality management method to generate measurement for each adapted multimedia segment, and generating a utility based descriptors based on the portions of utility based descriptor information and corresponding quality measurements. | 12-24-2009 |
