Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04N
PICTORIAL COMMUNICATION, e.g. TELEVISION
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1/00
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
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H04N1/32
Circuits or arrangements for control or supervision between transmitter and receiver; or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
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H04N1/327
Initiating, continuing or ending a single-mode communication; Handshaking therefor
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H04N1/32765
Initiating a communication
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H04N1/32771
in response to a request, e.g. for a particular document
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H04N1/32782
using a tone- or pulse-coded request
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