Device for controlling the operation of at least one functional

Details Device for controlling the operation of at least one functional Device for controlling the operation of at least one functional

1999-12-01

2000-10-03

Vu, David

Electric lamp and discharge devices: systems

Special application

Vehicle

315158, 307 108, H05B 3700

Patent

active

061277819

ABSTRACT:
This device comprising a brightness sensor associated with analysis arrangement for controlling the operation of the member is characterized in that the analysis arrangement comprise arrangement (4) for periodically acquiring information about the instantaneous brightness at output from the sensor, arrangement (5) for calculating immediate brightness values by calculating the mean, over a first period of time, of the instantaneous brightness values, arrangement (6) for calculating immediate ambient brightness values by calculating the mean, over a second period of time, of the immediate brightness values, arrangement (7) for calculating natural ambient brightness values by calculating the mean of n first immediate ambient brightness values, over a third maximum period of time, and arrangement (8) for controlling the operation of the functional member on the basis of these natural ambient brightness values.

REFERENCES:
patent: 4376909 (1983-03-01), Tagami et al.

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