Power supply controller
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United States of America Patent
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Oct 10, 2023
Grant Date -
Aug 18, 2022
app pub date -
Feb 10, 2022
filing date -
Feb 12, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A power supply controller works to control electrical power supplied to a surroundings monitor including an in-vehicle camera and an image processor which monitors surroundings of a vehicle using an output from the in-vehicle camera. The power supply controller includes a voltage monitor which determines whether an operating voltage for the image processor lies in a normal voltage range and an abnormal voltage range. Until a given threshold changing condition is met after start of power supply to the surroundings monitor, the voltage monitor alters at least one of an upper limit threshold and a lower limit threshold of the normal voltage range to decrease a difference between the upper and lower limit thresholds to be lower than that after the given threshold changing condition is satisfied. This ensures the stability in supplying electrical power to the surroundings monitor without restricting an operation of the surroundings monitor more than required.
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