Light-emitting element driving device
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United States of America
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Nov 5, 2024
Grant Date -
Mar 7, 2024
app pub date -
Nov 18, 2021
filing date -
Nov 18, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
Connection terminals, corresponding to a plurality of channels, are configured to be connectable to light-emitting units so that driving currents can be supplied to the light-emitting units via the connection terminals individually for each channel. During a non-supply period of the driving currents to the light-emitting units, a sensing process is executed to sense a particular fault. The sensing process includes a first comparison process whereby, with a pull-up current fed toward one of two connection terminals, the voltage at the other connection terminal is compared with a judgment voltage and a second comparison process whereby, with a pull-up current fed toward the other of the two connection terminals, the voltage at the one connection terminal is compared with the judgment voltage.
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