Method and apparatus for calibration of a distance

专利名称：Method and apparatus for calibration of a

distance sensor in a vehicle navigationsystem

发明人：Oshizawa, Hidekazu,Sakakibara, Toshikazu申请号：EP96306716.0申请日：19960916公开号：EP0763713B1公开日：20040512

摘要：Method and apparatus for modifying an odometer reading in a vehiclenavigation system to compensate for odometer errors. A first distance measurement isobtained from the odometer, and a second distance measurement is obtained from atleast one other sensor. The difference between the first and second distancemeasurements is determined and an adjustment amount is generated in responsethereto. A modification factor is then adjusted by the adjustment amount, the

modification factor being for modifying the odometer reading. The odometer reading isthen modified with the modification factor. A method and apparatus for selecting a pulserate setting in a vehicle navigation system to correspond to a pulse rate associated withthe odometer are also described. A first distance measurement is obtained from theodometer and a second distance measurement is obtained from at least one othersensor. The difference between the first and second distance measurements is thendetermined. The pulse rate setting is changed to correspond to the odometer pulse rateif the difference is greater than a threshold level, and is left unchanged if the difference isless than the threshold level.

申请人：VISTEON TECH LLC

地址：US

国籍：US

代理机构：Hill, Richard

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