Optical disk and optical disk drive
AssigneeKabushiki Kaisha Toshiba
InventorsKatsutaro Ichihara, Akiko Hirao, Hideyuki Nishizawa, Toshihiko Nagase
Life of this patent
Estimating the term…
Abstract
An optical disk comprising a recording layer and a super-resolution film disposed on the reproduction-beam incident side of the recording layer, wherein the super-resolution film is formed of a fine particle-dispersed film comprising a matrix and semiconductor fine particles dispersed in the matrix or formed of a semiconductor continuous film, and wherein content of a matrix material or a contamination mixed in the semiconductor fine particles or the semiconductor continuous film is not more than 20 at %.
Claims9
An optical disk drive for performing recording and reproduction of an optical disk comprising a recording layer and a super-resolution film disposed on the light incident side with respect to the recording layer, the super-resolution film having a property to be excited by irradiation of light and to emit light on deexcitation after the irradiation of light;
- the optical disk drive comprising:
- an emission detecting means for detecting emission resulting from deexcitation of the super-resolution film caused after the irradiation of the recording beam onto the optical disk;
- and
- a verifying means for verifying a recorded state of the optical disk based on emission detection signals supplied from the emission detecting means.
Dependencies are inferred from the claim text.