Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1982-04-12
1985-02-05
Martin, John C.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358126, 358261, H04N 100
Patent
active
044981023
ABSTRACT:
In the method, an image is analyzed by a television camera, is then submitted to differential coding with a "temporal inter-fields prediction", between fields of the same image, with the exception of one initialization line which is coded with a "uni-dimensional space prediction". The transmitting device and the receiving device of the transmission system each comprise an image memory which stores the two fields. They also comprise means for calculating the prediction, shown in the figure, and operating according to two types of the method. A first device calculates a uni-dimensional space prediction, and a second device calculates a temporal inter-fields prediction. A pointer selects the space prediction during initialization and the temporal prediction during the remainder of the transmission.
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Catros Jean Y.
Richard Christian
"Thomson-CSF"
Coles Edward L.
Martin John C.
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