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이종망 환경에서 오류 은닉을 고려한 비디오 전송 방법 및 장치 patent no. 10-2005-0135986, Dec. 2005 (출원) file 한국  2005-12-30   
이종망환경에서 핸드오프를 고려한 비디오 전송 방법 및 그장치(Method and Apparatus for transmitting video consideringvertical handoff in heterogeneous networks), patent no. 10-0729145-0000, Jun. 2007 file 한국  2006-03-06  2007-06-11 
와핑 변환을 이용한 프레임 보간 방법 및 그 장치(Method to interpolate frame using warpingtransformation and Apparatus thereof), patent no. 10-0698640-0000, Mar. 2007 file 한국  2006-03-10  2007-03-15 
움직임 벡터 예측 장치 및 방법(Apparatus and Method for Predicting Motion Vector), patent no. 10-0733966-0000 Jun. 2007 file 한국  2006-04-12  2007-06-25 
임의의 Primary Coded Picture로부터 얻은 Redundant Coded picture와 FMO를 이용한 에러 강인성을 위한 부호 및 복호화 장치 및 방법 patent no. 10-2006-0065938, Jul. 2006 (출원) file 한국  2006-07-13   
System and Method for performing Handover Dealing with Service Quality in Broadband Mobile Communication patent no. 10-2007-0031490, Mar. 2007.      
Apparatus and Method for decryption of Reference Image Between Improved layers, patent no. 10-2007-0004669, Jan. 2007.      
Apparatus and Method for Quantization Providing the Improved SNR Scalability, patent no. 10-2006-0067093, Jul. 2006.      
Apparatus and Method for Synchronized Encryption and Decryption of Video thereof, patent no. 10-0764246-0000, Feb. 2006.      
Apparatus and Method for Synchronized Encryption and Decryption of Audio Patent no. 10-2006-0040411, May. 2006.      
Apparatus and Method for Encryption and Decryption with Error Durableness Using Redundant Coded Picture and FMO Obtained from Primary Coded Picture patent no. 10-2006-0065938 Jul. 2006.      
Apparatus and method for removing motion blur of image U.S.A. Patent no. 20080253676, Oct. 2008. (processing) file 미국  2007-10-31   
Method for synchronized encryption and decryption of audio and Apparatus thereof, patent no. 10-0828163, Apr. 2008.      
system for providing image service, and method and apparatus therefor no. 10-2006-0103714. Oct. 2006. (processing)      
영상 복원 장치 및 이를 이루기 위한 오류 은닉 방법(Apparatus for restoring video and method for concealing error therefor), patent no. 10-0897884-0000. May 2009. file 한국  2007-07-02  2009-05-08 
Apparatus and method of embedded quantization for the improved SNR scalability, patent no. 10-2007-0011148. Jan. 2007. (processing)      
Method and Apparatus for selective inter-layer prediction on Macroblock basis, patent no. 10-2007-0076504. Jan. 2007. (processing)      
Apparatus and method of embedded quantization for the improved SNR scalabilityU.S.A. Patent no. PCT/KR2006/002829, Jul. 2006 (processing) file PCT  2006-07-19   
Method for establishing data transmission path and sensor network employing the same U.S.A. Patent no. 0442387, May. 2006.(processing)      
Mobility management method using an improved neighbor graphU.S.A. Patent no. 7450546, Nov. 2008 file 특허 권리 국가 미국    2008-11-11