Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-10-25
2005-10-25
Diep, Nhon (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C348S699000
Reexamination Certificate
active
06959044
ABSTRACT:
This invention discloses an intra-frame complexity based dynamic GOP system and method for the encoding of MPEG-2 video streams. The present invention may be used as a rate control tool to improve video quality. The selective insertion of low complexity I frames in scene changes such as fades is disclosed. It is disclosed that the selective use of I frames in certain scene change situations can improve encoder performance, particularly when encoding at a low bit rate.
REFERENCES:
patent: 5859660 (1999-01-01), Perkins et al.
patent: 5978029 (1999-11-01), Boice et al.
patent: 6026232 (2000-02-01), Yogeshwar et al.
patent: 6058210 (2000-05-01), de Queiroz et al.
patent: 6301428 (2001-10-01), Linzer
patent: 6380991 (2002-04-01), Teichmer
patent: 6381278 (2002-04-01), Shin et al.
patent: 6449392 (2002-09-01), Divakaran et al.
patent: 6473459 (2002-10-01), Sugano et al.
patent: 6493042 (2002-12-01), Bozdagi et al.
patent: 6618507 (2003-09-01), Divakaran et al.
patent: 6741290 (2004-05-01), Wells
J. Lee and B.W. Dickinson, “Scene-Adaptive Motion Interpolation Structures Based on Temporal Masking in Human Visual Perception”, in Proc. SPIE Conf. Visual Communication and Image Processing, Cambridge, Nov. 1993, pp. 499-510.
J. Lee and B.W. Dickinson, “Adaptive Frame Type Selection for Low Bit-Rate Video Coding”, in Proc. SPIE Conf. Visual Communication and Image Processing, Chicago, IL, Sep. 1994, pp. 1411-1422.
A.Y. Lan, A.G. Nguyen and J.N. Hwang, “Scene-Content-Dependent Reference-Frame Placement for MPEG Video Coding”, IEEE Trans. Circuits and Systems Video Technol., vol. 9, No. 3, pp. 478-489, 1999.
A. Yoneyama, Y. Nakajima, H. Yanagihara and M. Sugano, “MPEG Encoding Algorithm with Scene Adaptive Dynamic GOP Structure”, IEEE Third International Workshop on Multimedia Signal Processing, pp. 297-302, 1999.
Cote Guy
Jin Luojun
Winger Lowell
Beyer Weaver & Thomas LLP
Cisco Systems Canada Co.
Diep Nhon
LandOfFree
Dynamic GOP system and method for digital video encoding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dynamic GOP system and method for digital video encoding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic GOP system and method for digital video encoding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3485764