ADAPTIVE MULTIPLE SPEED FACSIMILE SYSTEM

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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: GERALD W. JACOB, PAUL Z. BOROS, EUGENE MOGUL, IRA KAMEN, MALCOLM READER, DAVID SCHIFF
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung: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.