Facsimile and static presentation processing – Facsimile – Auxiliary signal
Patent
1994-03-21
1994-11-29
Hjerpe, Richard
Facsimile and static presentation processing
Facsimile
Auxiliary signal
358432, 348423, H04N 4415
Patent
active
053695020
ABSTRACT:
An image data reconstructing method and apparatus, adaptive to both progressive and sequential image buildup modes, reconstructs an orthogonally transformed image by dequantizing transform coefficients decoded from coded data of a continuous tone image, by causing the transform coefficients to have a common data structure through an attachment of a dummy signal representing a zero value DC element. The image data reconstructing method comprises a coded data decoding step, a common data structure one-dimensional quantized transform coefficient creating step, a one-to-two dimensional quantized transform coefficient transforming step, a dequantization threshold storing step, and a two-dimensional quantized transform coefficient dequantizing step. The image date reconstructing apparatus comprises a dummy signal generator for generating such dummy signals and a selector for selecting the dummy signals.
REFERENCES:
patent: 4954892 (1990-09-01), Asai et al.
patent: 4982282 (1991-01-01), Saito et al.
patent: 5045938 (1991-09-01), Sugiyama
patent: 5046071 (1991-09-01), Tanoi
patent: 5121216 (1992-06-01), Chen et al.
patent: 5150432 (1992-09-01), Ueno et al.
patent: 5293252 (1994-03-01), Kim et al.
Yashima et al., "HDTV/Standard-TV Compatible Coding Based on DCT", 1990 IEEE International Symposium on Circuits and Systems, vol. 3, May 1, 1990, pp. 1895-1898.
Dubois et al., "Encoding and Progressive Transmission of Still Pictures in NTSC Composite Format Using Transform Domain Methods", IEEE Transactions on Communications, vol. COM34, No. 3, Mar. 1, 1986, pp. 310-319.
Patent Abstracts of Japan, vol. 14, No. 515 (E-1000) Nov. 13, 1990 for JP-A-02 214 261 (Fujitsu Ltd) Aug. 27, 1990.
Patent Abstracts of Japan, vol. 15, No. 36 (e-1027) Jan. 29, 1991 for JP-A-02 274028 (NEC Corp) Nov. 8, 1990.
Patent Abstracts of Japan, vol. 14, No. 421 (E-976) Sep. 11, 1990 for JP-A-02 216887 (NEC Corp) Jun. 21, 1990.
European Search Report, The Hague, Mar. 24, 1993.
Fukuda Masahiro
Noda Tsugio
Fujitsu Limited
Hjerpe Richard
Yen Kim
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