Patent ID: 6445135
Filing Date: 2002-09-03
Classification: H05B,Y02B,Y10S

Abstract:
An electric-discharge lamp control apparatus, comprising:lamp-lighting control means for monitoring a voltage applied to a stabilizer of an electric-discharge lamp, outputting a light-out instruction to turn off the electric-discharge lamp when the voltage is out of an allowed voltage range and outputting a re-lighting instruction to again turn on the electric-discharge lamp when the voltage is returned within the allowed voltage range; counting means for monitoring a change of the instruction output from the lamp-lighting control means and for counting a number of the changes of the instruction by incrementing the number when the instruction changes from at least one of (a) the light-out instruction to the re-lighting instruction, and (b) the re-lighting instruction to the light-out instruction; and lamp-lighting inhibiting means for inhibiting the lighting of the electric-discharge lamp when the number counted by the counting means exceeds a predetermined number.