The recording/playback device is coupled to a scan controller, which controls the scanning operation of a CT apparatus, and a host controller, which sends commands to the recording/playback device and scan controller and receives {HEAD ~ control data} from {TAIL ~ the scan controller} 
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The recording / playback device is coupled to a scan controller , which controls the scanning operation of a CT apparatus , and a host controller , which sends commands to the recording / playback device and scan controller and receives { HEAD ~ control data } from { TAIL ~ the scan controller }
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