Data processing: measuring – calibrating – or testing – Measurement system – Dimensional determination
Reexamination Certificate
2005-06-07
2005-06-07
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system
Dimensional determination
C702S094000, C702S150000, C701S216000, C342S357490, C342S357490
Reexamination Certificate
active
06904383
ABSTRACT:
A signal acquisition section19acquires, for example, a vehicle velocity pulse signal, which is generated from a vehicle velocity sensor8in accordance with the movement of a vehicle that is a mobile body. A distance information acquisition section20acquires distance information concerning the movement distance of the vehicle from a GPS receiver2. A distance factor computing section21computes a distance factor value based on the acquired vehicle velocity pulse signal and distance information. A change detection section23then compares this computed distance factor value and a distance factor reference value stored in a reference value storage section30to detect a continuous change of the distance factor value. That is, change detection section23detects a change of tire outer diameter due to a change of the pneumatic pressure of the vehicle's tire or tire exchange, etc. When the change of tire outer diameter is detected by change detection section23, a distance factor correction section26corrects the distance factor reference value speedily and appropriately.
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European Search Report.
Goto Seiji
Tanaka Kazuaki
Armstrong Kratz Quintos Hanson & Brooks, LLP
Barlow John
Pioneer Corporation
Walling Meagan S
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