Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2006-04-18
2006-04-18
Vo, Hieu T. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S114000, C701S115000
Reexamination Certificate
active
07031822
ABSTRACT:
In an on-vehicle electronic control unit, error in output voltages from a constant voltage power supply circuit (C.V.P.S.) for use in a reference power supply of an A/D converter, occurs due to temperature rise. Whereby, there is a problem of the decrease of an A/D conversion accuracy. A C.V.P.S. supplies a voltage to analog sensors and to an AD converter. Furthermore, an output from a temperature sensor that is disposed in the neighborhood of the C.V.P.S. is stored in a memory as a contrast temperature data T at a time point of shipping. In addition, voltage fluctuation characteristic data due to the change of temperatures of the C.V.P.S. and detection fluctuation characteristic data accompanied by the change of voltages of the analog sensor group have preliminarily been stored, and the fluctuations in digital converted values accompanied with the change of temperatures in the neighborhood of the C.V.P.S. are compensated.
REFERENCES:
patent: 4580221 (1986-04-01), Isobe et al.
patent: 5351283 (1994-09-01), Kunitomo
patent: 1-147140 (1989-06-01), None
patent: 7-160367 (1995-06-01), None
patent: 7-218547 (1995-08-01), None
patent: 8-121227 (1996-05-01), None
patent: 8-177700 (1996-07-01), None
Hashimoto Kohji
Kannan Yasuhiko
Nakamoto Katsuya
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