Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2006-05-23
2006-05-23
Le, Vu (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
Reexamination Certificate
active
07050495
ABSTRACT:
In the video data compression apparatus1, the host computer20controls the operation of the constituent parts of the video data compression apparatus1. Further, the host computer20receives the amount of data of the compressed video data generated by preliminarily compressing and coding the noncompressed video data VIN by the encoder162of the simplified two pass processing unit16, the value of the direct current component (DC component) of the video data after the DCT processing, and the power value of the alternating current component (AC component) via a control signal C16and calculates the difficulty of the pattern of the compressed video data based on these received values. Further, the host computer20allocates the target amount of data Tjof the compressed video data generated by the encoder18via the control signal C18for every picture based on the calculated difficulty, sets the same in the quantization circuit168(FIG.3) of the encoder18, and adaptively controls the compression rate of the encoder18in units of pictures.
REFERENCES:
patent: 5038209 (1991-08-01), Hang
patent: 5136377 (1992-08-01), Johnston et al.
patent: 5231484 (1993-07-01), Gonzales et al.
patent: 5265180 (1993-11-01), Golin
patent: 5287200 (1994-02-01), Sullivan et al.
patent: 5379355 (1995-01-01), Allen
patent: 5396567 (1995-03-01), Jass
patent: 5404168 (1995-04-01), Yamada et al.
patent: 5410351 (1995-04-01), Kojima
patent: 5426463 (1995-06-01), Reininger et al.
patent: 5434623 (1995-07-01), Coleman et al.
patent: 5461422 (1995-10-01), Hsieh
patent: 5691775 (1997-11-01), Astle
patent: 5703646 (1997-12-01), Oda
patent: 5774593 (1998-06-01), Zick et al.
patent: 5835149 (1998-11-01), Astle
patent: 5929914 (1999-07-01), Normand
patent: 5933532 (1999-08-01), Mihara
patent: 6337879 (2002-01-01), Mihara et al.
patent: 0 475 251 (1992-03-01), None
patent: 0 493 130 (1992-07-01), None
patent: 0 509 576 (1992-10-01), None
patent: 0 526 201 (1993-02-01), None
patent: 0 535 960 (1993-04-01), None
patent: 0 535 960 (1993-04-01), None
patent: 0 597 647 (1994-05-01), None
patent: 0 677 969 (1995-10-01), None
patent: 0 700 214 (1996-03-01), None
patent: 0 797 359 (1997-09-01), None
patent: WO 95 29541 (1995-11-01), None
Lee J et al: “Adapative Frame Type Selection for Low Bit-Rate Video Coding” SPIE Visual Communications and Image Processing, vol. 2308, No. 2, Sep. 25, 1994, pp. 1411-1422, XP002035257.
Keesman G et al: “Bit-Rate Control for MPEG Encoders” Signal Processing, Image Communication, Elsevier Science Publishers, Amsterdam, NL, vol. 6, No. 6, Feb. 1, 1995, pp. 545-560, XP000491860 ISSN: 0923-5965.
Nicoulin et al., “Feed-back Free Rate Control for Digital Video Coding”, Proceedings of the Picture Coding Symposium (PCS), Lausanne, Mar. 17-19, 1993 No.-, Swiss Federal Institute of Technology, pp. 19.3/A-19.3/B, XP 000346426.
Kitamura Takuya
Mihara Kanji
Suzuki Takao
Frommer William S.
Frommer & Lawrence & Haug LLP
Le Vu
Senfi Behrooz
Simon Darren M.
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