Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2006-03-28
2006-03-28
Le, Vu (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240180, C375S240240
Reexamination Certificate
active
07020204
ABSTRACT:
A method and a device for coding and decoding a sequence of images or pictures is disclosed. One exemplary embodiment disclosed codes by dividing each picture into blocks of picture elements. Each element of a block being represented by a digital value. Two types of coding are utilized in order to reduce the amount of data; inter-coding, which takes into account a corresponding block in a previous picture and intra coding, which is independent from a previous picture. Blocks being thus coded so that a further reduction of data is obtained by transmitting high spatial frequencies with less weight than low spatial frequencies. This is accomplished with the use of weighting coefficients. Weighting coefficients are variable as a function of the quantity of information to be transmitted.
REFERENCES:
patent: 3761613 (1973-09-01), Limb
patent: 4196448 (1980-04-01), Whitehouse et al.
patent: 4217609 (1980-08-01), Hatori et al.
patent: 4245248 (1981-01-01), Netravali et al.
patent: 4302775 (1981-11-01), Widergren et al.
patent: 4394774 (1983-07-01), Widergren et al.
patent: 4447886 (1984-05-01), Meeker
patent: 4541012 (1985-09-01), Tescher
patent: 4581638 (1986-04-01), Chiariglione et al.
patent: 4583114 (1986-04-01), Catros
patent: 4672427 (1987-06-01), Rzeszewski
patent: 4672441 (1987-06-01), Hoelzlwimmer et al.
patent: 4707738 (1987-11-01), Ferre et al.
patent: 4734767 (1988-03-01), Kaneko et al.
patent: 4901075 (1990-02-01), Vogel
patent: 4918523 (1990-04-01), Simon et al.
patent: 4969055 (1990-11-01), Oberjatzas et al.
patent: 0 084 270 (1983-07-01), None
patent: 0 189 703 (1986-08-01), None
patent: 2 589 020 (1987-04-01), None
patent: 60-194875 (1985-10-01), None
patent: 62-272632 (1987-11-01), None
Gakkaishi, Terebijon, International Standardization of Colour Still Picture Coding, edited by Hiroshi Yasuda, The Journal of the Institute of the Television Engineers of Japan, vol. 41, No. 9 (Ser. No. 469), Sep. 20, 1987 pp. 815-820, translation attached.
Kaneko, Masahide et al., “Selection of Transformed Coefficients to be Quantized in Hybrid Coding Method”, edited by Masahide Kaneko et al., National Convention Record (1987), The Institute of Electronics, Information and Communication Engineers (Part 5), p. 33, translation attached.
H. Bacchi et al., “Real-Time Orthogonal Transformation Of Colour-Television Pictures”, Philips Technical Review, vol. 38, No. 4/5. 1978/1979, pp. 119-129.
A. G. Tescher, “Adaptive Transform Coding Of Color Images At Low Rates”, National Telecommunications Conference, Houston, Nov. 30-Dec. 4, 1980, vol. 2, pp. 36.3.1-36.3.4, IEEE, New York.
Auvray Eric
Ferre Alain
Perron Claude
Laks Joseph J.
Le Vu
Liao Frank Y.
Thomson Licensing
Tripoli Joseph S.
LandOfFree
Adaptive method of encoding and decoding a series of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive method of encoding and decoding a series of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive method of encoding and decoding a series of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3548878