Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Automatic route guidance vehicle
Reexamination Certificate
2008-04-22
2008-04-22
Nguyen, Cuong (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Automatic route guidance vehicle
C701S024000, C324S635000, C073S861270
Reexamination Certificate
active
11491034
ABSTRACT:
A tracking system of the present invention includes a transponder20attached on a moving object2and an autonomous mobile unit1for tracking the transponder20. The autonomous mobile unit1has an environment detecting means for acquiring reflection environment information relating to a wall surface6a, 6band6cexisting in the vicinity. In this system, the following tracking cycle is executed. The autonomous mobile unit1transmits a first ultrasonic wave, and upon receipt of it, the transponder20transmits a second ultrasonic wave. By receiving the second ultrasonic wave, the autonomous mobile unit1acquires reception information relating to a direct wave that directly arrives at the autonomous mobile unit1from the transponder20and a reflected wave that arrives via the wall surface. Using the reception information and the reflection environment information, the autonomous mobile unit1decides whether the received second ultrasonic wave is the direct wave or the reflected wave and processes the reception information based on the decision to estimate and track the position of the transponder20.
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Hashimoto Masahiko
Suginouchi Takehiko
McDermott Will & Emery LLP
Nguyen Cuong
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