Patent ID: 6160351
Filing Date: 2000-12-12
Classification: H05B

Abstract:
An illumination control apparatus for controlling illumination by detecting a change in an environment, comprising:a magnetic field detector for detecting a change in a magnetic field, generated by a magnetized ferroelectric object to output a first signal having a voltage which is proportional to said change in said magnetic field;an amplifier for amplifying said first signal;a discriminator for discriminating a level of the amplified voltage to output an illumination on-signal having a first logic level if said level of said amplified voltage is higher than a predetermined voltage, and otherwise to output an illumination off-signal having a second logic level;an illumination controller for outputting an illumination driving voltage in response to said illumination on-signal having said first logic level; andan illumination portion for producing light in response to said illumination driving voltage.