Patent ID: 6348695
Filing Date: 2002-02-19
Classification: G01D

Abstract:
A position detection apparatus for outputting position data representing a position of an object to be measured, comprising:a detection unit which detects reception of a request signal for requesting output of the position data; a sensor output measurement unit which measures the output of a sensor for detecting the position of said object, when a predetermined time has passed since reception of the request signal was detected by said detection unit; a position data calculation unit which calculates the position data representing the position of said object at a point of time when the measurement was performed, based on the output measured by said sensor output measurement unit; a reception interval measurement unit which measures a reception interval of the request signal; a corrected position data calculation unit which calculates corrected position data which is position data representing the position of said object at the time of receiving the request signal whose reception interval was measured, using the reception interval of the request signal, the predetermined time, the position data calculated by said position data calculation unit, and a presumed speed of said object; and an output unit which outputs the corrected position data calculated by said corrected position data calculation unit as a response to the request signal.