Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04Q
SELECTING
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2209/00
Arrangements in telecontrol or telemetry systems
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H04Q2209/70
Arrangements in the main station, i.e. central controller
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H04Q2209/75
by polling or interrogating the sub-stations
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H04Q2209/756
where the polling of the sub-stations is cyclic, e.g. round-robin
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