ADAPTIVE MULTIPLE SPEED FACSIMILE SYSTEM
A facsimile transmitter comprises means for scanning a document to produce signals corresponding to the dark and light areas of the document. Those signals are transferred to the receiver at one of two predetermined rates-fast or slow-depending on the content of the document. If desired, the rate of...
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Main Authors | , , , , , |
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Format | Patent |
Language | English |
Published |
29.02.1972
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Subjects | |
Online Access | Get full text |
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Summary: | A facsimile transmitter comprises means for scanning a document to produce signals corresponding to the dark and light areas of the document. Those signals are transferred to the receiver at one of two predetermined rates-fast or slow-depending on the content of the document. If desired, the rate of scanning may also be varied according to that content. Signals having a low information value are thereby transmitted at a higher rate than signals having a high information content. |
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Bibliography: | Application Number: USD3646256 |