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Publication date
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Publication of BE726711ApublicationCriticalpatent/BE726711A/xx
A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
A61B6/10—Safety means specially adapted therefor
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
A61B6/04—Positioning of patients; Tiltable beds or the like
A61B6/0487—Motor-assisted positioning
G—PHYSICS
G05—CONTROLLING; REGULATING
G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
G05D3/00—Control of position or direction
G05D3/12—Control of position or direction using feedback
G05D3/14—Control of position or direction using feedback using an analogue comparing device
G05D3/16—Control of position or direction using feedback using an analogue comparing device whose output amplitude can only take a number of discrete values