Patent ID: 7242652

Claim:
An optical recording system comprising: a laser light source operable so as to provide an incident recording light signal for recording information on an optical recording medium; an optical detector for detecting a reflected write pulse that is a reflection of the incident recording light signal from the optical recording medium; a signal generating device coupled to said optical detector and including an analog peak value detector for detecting a peak value of the reflected write pulse from said optical detector, at least one sample-hold circuit for sampling the reflected write pulse to obtain at least one amplitude value, a processor coupled to said analog peak value detector and said at least one sample-hold circuit, said processor generating a mark formation effectiveness signal according to the peak value from said analog peak value detector and said at least one amplitude value from said at least one sample-hold circuit, the mark formation effectiveness signal corresponding to the information recorded on the optical recording medium, an analog-to-digital converter that interconnects said analog peak value detector and said at least one sample-hold circuit to said processor, said analog-to-digital converter converting the peak value from said analog peak value detector and said at least one amplitude value from said at least one sample-hold circuit into digital form for subsequent reception by said processor, and a multiplexer for controlling connection of each of said analog peak value detector and said at least one sample-hold circuit to said analog-to-digital converter; and a light source controller coupled to said laser light source and said signal generating device, said light source controller controlling recording laser beam power of said laser light source according to the mark formation effectiveness signal from said signal generating device for optimum information recording.