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US 4,813,436 AGranted
Motion analysis system employing various operating modes
AssigneeHuman Performance Technologies, Inc.
InventorJan C. Au
Life of this patent
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AssigneeHuman Performance Technologies, Inc.
InventorJan C. Au
Estimating the term…
A motion analysis system and apparatus incorporates markers which are secured at various joints of the subject's body as well as pressure sensitive shoes or insoles which are worn by the subject. The subject is caused to perform motion such as walking or running. While performing this motion, the subject is televised by means of two video cameras. The video signal from the cameras is stored by means of video recorders and then processed on a frame-to-frame basis to provide digitized data. The pressure sensitive insoles provide signals which are processed according to analog to digital conversion techniques whereby a display is also provided which indicates the pressure applied to the subject's foot while performing. The remaining data as supplied by the first and second video cameras and which is digitized is then further processed to present various displays showing the gait, the angular position of the various joints of the patient and various other information indicative of the particular walking characteristics of the subject. The data thus produced and processed by the system enables a practitioner to judge the persons's walking gait as compared to a normal user.
A motion analysis system of the type operative to analyze the movements of designated body portions of a subject to be monitored as the subject walks along a predetermined path and to particularly analyze the pressure applied to the feet of said subject when traversing said path, comprising:
The system according to claim 6, further including,
A motion analysis system of the type operative to analyze the motion of designated body portions of a subject to be monitored as the subject walks along a predetermined path and particularly adapted to analyze the gait, joint angles and force between said body portions and the forces exerted on said body portions as said subject traverses said path with said body portions of said subject marked by light indicating markers, said system of the type employing first and second television cameras and associated storage means as video tape recorders associated with each camera for storing the video signal from each camera and including digital means coupled to said storage means for digitizing said video signals by forming a pixel array and computer means coupled to said digital means for processing said digitized signals to provide displays indicative of the motion qualities of said subject as traversing said path with said displays as provided being processed according to said markers, the improvement therewith of apparatus for controlling the processing of said motion analysis system comprising:
Dependencies are inferred from the claim text.