Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-06-01
1990-01-16
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358135, 358136, 364725, H04N 7133, H04N 7137
Patent
active
048947130
ABSTRACT:
In a method in which the data related to the image are read in successive blocks, then subjected to orthogonal transformation, the coefficients of the transform obtained being quantized and analyzed according to a certain order and applied in the form of binary signals to a redundancy reducing coder, the signals representing the coefficients of the transform are stored in a memory organized in several blocks, and the contents of said memory are analyzed such that the signals applied to the redundancy reducing coder comprise sets of signals of coefficients taken from a group of blocks, the signals of each coefficient in each set being taken from a separate block belonging to said group of blocks.
REFERENCES:
patent: 4447886 (1984-05-01), Meeker
patent: 4541012 (1985-09-01), Tescher
patent: 4707738 (1987-11-01), Ferre
patent: 4751742 (1988-06-01), Meeker
"A Visual Model Weighted Cosine Transform for Image Compression and Quality Assessment", IEEE Transactions on Communications, vol. Com-33, No. 6. Jun. 1985, pp. 551-557.
"A Visually Weighted Quantization Scheme for Image Bandwidth Compression at Low Data Rates", IEEE Transactions on Communications, vol. Com-34, No. 8, Aug. 1986, pp. 840-847.
"Picture Quality Prediction Based on a Visual Model", IEEE Transactions on Communications, vol. Com-30, No. 7, Jul. 1982, pp. 1679-1692.
Delogne Paul
Macq Benoit
Vandendorpe Luc
Britton Howard W.
The Belgian State
LandOfFree
Method of coding video signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of coding video signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of coding video signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1338454