Electricity: motive power systems – Automatic and/or with time-delay means – Moisture content or wetness
Reexamination Certificate
2007-07-19
2010-06-08
Benson, Walter (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Moisture content or wetness
C702S003000, C073S170210, C073S170170
Reexamination Certificate
active
07733049
ABSTRACT:
A change computing arrangement computing an amount of change in a measured value of a measurement signal of a raindrop sensor in a raindrop quantity sensing execution time period that is a time period, during which a wiper blade moves outside of a sensing range of the raindrop sensor. A difference computing arrangement computes a difference between a predetermined reference value and an initial measured value of the measurement signal of the raindrop sensor. A determining arrangement determines the quantity of raindrops on the windshield based on the amount of change, which is computed by the change computing arrangement, and the difference, which is computed by the difference computing arrangement.
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Office Action dated Jul. 8, 2008 in German Application No. 102007000407.0 with English translation.
Hiramoto Satoru
Morishita Taiji
Benson Walter
Denso Corporation
Luo David S
Nixon & Vanderhye P.C.
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