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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Bibliographic Details
Main Authors GERALD W. JACOB, PAUL Z. BOROS, EUGENE MOGUL, IRA KAMEN, MALCOLM READER, DAVID SCHIFF
Format Patent
LanguageEnglish
Published 29.02.1972
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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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.
Bibliography:Application Number: USD3646256