Limited play optical devices with interstitial reactive layer and methods of making same
US7352686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2006 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jun 5, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device comprises a first substrate and a second substrate, wherein at least the first substrate has defined thereon a plurality of pits and lands covered by a reflective material; and a bonding layer between the first and second substrates including a reactive agent that interferes with the passage of light in response to predetermined stimulus. In another embodiment, an optically-readable storage media, comprises a substrate having encoded data stored thereon, a reactive agent that, in response to predetermined stimulus, interferes with the passage of light of a predetermined frequency range, and a second reactive agent that, in response to predetermined stimulus, degrades the readability of the encoded data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.