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US 7,933,194 B2Granted
Read-once record medium
OwnerWellen Shaminventor
Life of this patent
Estimating the term…
Abstract
The present invention relates to a read-once record medium that comprises a data substrate, a sensitive layer; a reflective layer, an adhesive layer and a transparent substrate; thereby, the structure of the sensitive layer or the data substrate will be changed when laser beams with specific power emitted from an optical storage device pass through the data substrate and focus on the sensitive layer, and the laser beams will be reflected by the sensitive layer and can not be recognized by the optical storage device.
Claims20
A read-once record medium, comprising:
- a data substrate having pre-recorded data disposed thereon;
- a sensitive layer disposed above said data substrate;
- a reflective layer disposed above said sensitive layer;
- an adhesive layer disposed above said reflective layer;
- and
- a transparent substrate disposed above said adhesive layer;
- wherein at least one of said sensitive layer and said data substrate is deformed when a laser beam having a specific power is emitted from an optical storage device and the laser beam passes through said data substrate and focuses on said sensitive layer, and said laser beam is reflected by at least one of said deformed sensitive layer and said deformed data substrate and can not be recognized by said optical storage device.
4 more elements
A read-once record medium, comprising:
- a data substrate having a plurality of grooves for recording data;
- a sensitive layer disposed above said data substrate;
- a reflective layer disposed above said sensitive layer;
- an adhesive layer disposed above said reflective layer;
- and
- a transparent substrate disposed above said adhesive layer;
- wherein at least one of said sensitive layer and said data substrate is deformed when a laser beam having a specific power is emitted from an optical storage device, and the laser beam passes through said data substrate and focuses on said sensitive layer, and said laser beam is reflected by at least one of said deformed sensitive layer and said deformed data substrate and can not be recognized by said optical storage device.
4 more elements
Dependencies are inferred from the claim text.