VEHICLE SPEED INFORMATION GENERATION DEVICE, ACOUSTIC DEVICE AND METHOD FOR GENERATING VEHICLE SPEED INFORMATION

WIPO Patent Application WO/2014/083607

A1

If a vehicle speed information generation unit (730A) of the present invention receives a detected speed for each interval of a first time period, said unit determines whether there has been a variation in the detected speed at intervals of a second time period which is shorter than the first time period. If there is a variation in the detected speed, the vehicle speed information generation unit (730A) generates estimated speed information such that the estimated speed after a prescribed time period has elapsed, said time period being from the time of the variation for at least the second time period and no longer than the first time period, varies at a variation rate (α1) which is the value of the detected speed after the variation. Subsequently, the vehicle speed information generation unit (730A) generates the estimated speed information such that until the first time period elapses, the estimated speed varies at a variation rate (α2) determined on the basis of the amount the detected speed varies before and after a variation. Furthermore, the vehicle speed information generation unit (730A) generates the estimated speed information such that if the detected speed thereafter does not vary from the post-variation detected speed, the estimated speed varies at a variation rate (α3) which varies more moderately than the variation rate (α2).

TANAKA JUNICHI (JP)

PCT/JP2012/080585

June 05, 2014

November 27, 2012

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PIONEER CORP (JP)

G01P3/481; B60Q5/00

JP2009222601A	2009-10-01
JP2012032259A	2012-02-16
JP2011031775A	2011-02-17
JP2012121518A	2012-06-28

SHIBATA, ITSUO (JP)
Shibata Itsuo (JP)

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