The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 1999
Filed:
Mar. 20, 1997
Ted L Bahns, White Bear Lake, MN (US);
Imation Corp., Oakdale, MI (US);
Abstract
A dual layer optical disc having images encoded therein. The dual layer optical disc includes a first data layer and a second data layer coupled to the first data layer. An optically viewable image is encoded within the first data layer or the second data layer. The viewable image may be a light contrast, medium contrast, or high contrast image. The first data layer and the second data layer may have a balanced reflectivity rating. In another embodiment, the first data layer and the second data layer have an unbalance reflectivity rating, for varying the visibility of images encoded therein. The dual layer optical disc may further include a second side, having a third data layer and a fourth data layer having an optically viewable image encoded within the third data layer or the fourth data layer. The optically viewable image may be a holographic image.