Patent ID: 6560250
Filing Date: 2003-05-06
Classification: H01S

Abstract:
A laser diode drive signal processor for driving a laser diode to be used to emit a laser beam for accessing an optical information recording medium with the laser beam, said processor comprising:alternating current side driving current supply means for supplying a first driving current according to a signal level of an alternating current component; light amount detecting means coupled to said laser diode for detecting a light amount of the laser beam; error signal generating means for generating an error signal based on the detected light amount of the laser beam and a reference signal; direct current side driving current supply means for supplying a second driving current according to a signal level of the error signal; adding means for adding the first driving current from said alternating current side driving current supply means and the second driving current from said direct current side driving current supply means to generate a third driving current; and supply means for supplying said third driving current composed of the first and second driving currents to the laser diode.