The present invention is applicable to a recording apparatus of a CD or
DVD, a recording method thereof and a recording medium, and an object of
the present invention is to clearly record a second information such as
characters and figures between two recording levels in an optical disk.
The second information is recorded in a predetermined area in a radius
direction and a angular direction on the optical information recording
medium, and further, the second information is recorded according to a
change of a pit width based on a change of power of the laser beam, a
change of a pit length based on an on/off control of the laser beam, or a
change of depression or bulge of the pit based on a change in the
vicinity of the on/off control of the laser beam. Whereby it is possible
to record the second information such as a watermark pattern or a visible
image, which is capable of being confirmed by seeing a disk.