Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Katsuhiko Masuda0
Tsuyoshi Yamamoto0
Toru Tanaka0
Shigefumi Morishima0
Date of Patent
September 7, 2010
Patent Application Number
11668984
Date Filed
January 30, 2007
Patent Primary Examiner
Patent abstract
An image information detecting apparatus is disclosed that comprises: a semiconductor laser that emits a laser light beam; a light receiving unit that receives a reflected light beam of the laser light beam applied to a color changing layer of an optical disc, the color changing layer being formed from a photo-sensitive material of a heat-sensitive material, and that outputs an electrical signal corresponding to the level of the reflected light beam; and a detecting unit that detects image information based on the electric signal, wherein the image information detecting apparatus detects the image information indicating an image from the color changing layer after the image has been formed therein.
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