Offset for protection against amorphous pips during write verify

Abstract From the Canadian patent

Provided is a read signal offset during write verify which prevents the false detection of amorphous pips from an optical disk recorder. Amorphous pips are the signals caused by the drop in reflection from an optical disk after the laser has caused the surface material to change from its crystalline state to an amorphous state, but not to a hole. When a hole is not formed in the material, the amorphous material later recrystallizes the drop in reflec-, tion no longer occurs and information is lost.