Patent ID: 6272100
Filing Date: 2001-08-07
Classification: G11B

Abstract:
An information recording/reproducing apparatus for recording information by applying light from an optical head to a record area of a recording medium and changing a state of the record area and for reading the information recorded in the record area, the apparatus comprising:a detector circuit for detecting a state of reflection light from the recording medium while recording information thereon;a control circuit for calculating a radiation power used for recording the information in the recording medium, in accordance with the state of reflection light;a pulse generator circuit for generating record pulse information in accordance with the radiation power; andan optical driver circuit for converting the record pulse information into optical information in accordance with the radiation power and driving the optical head to record the light information into the recording medium;wherein said control circuit calculates the radiation power by comparing a reflection light amount in an n-th (n is a natural number) record area detected with said detector circuit with a reflection light amount in an (n+1)-th record area detected with said detector circuit.