Electric signal transmission systems (G08C17/00 takes precedence)

Child Classifications

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• G08C 19/02 in which the signal transmitted is magnitude of current or voltage (G08C19/36, G08C19/38 take precedence)
• G08C 19/12 in which the signal transmitted is frequency or phase of AC
• G08C 19/16 in which transmission is by pulses
• G08C 19/30 in which transmission is by selection of one or more conductors or channels from a plurality of conductors or channels (G08C19/38 takes precedence)
• G08C 19/36 using optical means to covert the input signal
• G08C 19/38 using dynamo-electric devices (operated by pulses G08C19/20)