Reflective holographic storage media with control information in underlying DVD reflective layer
View Patent ↗A holographic storage media incorporates a holographic recording layer for storing holographic data and a DVD reflective layer for storing control information. The DVD reflective layer is positioned within the holographic storage media relative to the holographic recording layer to enable individual optical access to the holographic recording layer via a data laser light for processing the holographic data and individual optical access to the DVD reflective layer via an information laser light for processing the control information. The holographic recording layer and the DVD reflective layer may be physically separated by one or more intermediate reflective layers. The data laser light and the information laser light may differ in one or more optical characteristics. The holographic recording layer and the DVD reflective layer may be optically accessed by the respective laser lights through different light transparent faces of the holographic storage media.
1. A holographic storage media, comprising:
a holographic recording layer for storing holographic data; and
a DVD reflective layer for storing control information, the DVD reflective layer being positioned within the holographic storage media relative to the holographic recording layer wherein the holographic recording layer is individually optically accessible by a data laser light for processing the holographic data and wherein the DVD reflective layer is individually optically accessible by an information laser light for processing the control information, wherein the control information includes calibration information, and wherein the calibration information includes at least one of holographic drive characteristics and encryption information.
2. The holographic storage media of claim 1 , further comprising:
a dichroic mirror layer between the holographic recording layer and the DVD reflective layer, wherein the dichroic mirror layer is operable to reflect the data laser light and to pass through the information laser light.
3. The holographic storage media of claim 1 , further comprising:
a reflective separation layer between the holographic recording layer and the DVD reflective layer, wherein the reflective separation layer is operable to reflect the data laser light.
4. The holographic storage media of claim 1 ,
wherein the data laser light has a first wavelength;
wherein the information laser light has a second wavelength; and
wherein the first wavelength and the second wavelength are different.
5. The holographic storage media of claim 1 ,
wherein the data laser light has a first focal point;
wherein the information laser light has a second focal point; and
wherein the first focal point and the second focal point are different.
6. The holographic storage media of claim 1 ,
wherein the data laser light has a first polarization relative to the holographic storage media;
wherein the information laser light has a second polarization relative to the holographic storage media; and
wherein the first polarization and the second polarization are different.
7. The holographic storage media of claim 1 , wherein the control information includes servo information.
8. A holographic storage media, comprising:
a holographic recording layer for storing holographic data; and
a DVD reflective layer for storing control information, the DVD reflective layer being positioned within the holographic storage media relative to the holographic recording layer wherein the holographic recording layer is individually optically accessible by a data laser light for processing the holographic data and wherein the DVD reflective layer is individually optically accessible by an information laser light for processing the control information,
wherein the holographic storage media has an exterior surface including a plurality of physically separate light transparent faces;
wherein the holographic recording layer is individually optically accessible by the data laser light through a first light transparent face of the holographic storage media; and
wherein the DVD reflective layer is individually optically accessible by the information laser light on a second light transparent face of the holographic storage media.
9. A holographic system, comprising:
a holographic storage media including
a holographic recording layer for storing holographic data, and
a DVD reflective layer for storing control information, the DVD reflective layer being positioned within the holographic storage media relative to the holographic recording layer wherein the holographic recording layer is individually optically accessible by a data laser light for processing the holographic data and wherein the DVD reflective layer is individually optically accessible by an information laser light for processing the control information; and
a holographic drive operable to emit the data laser light and the information laser light, wherein the control information includes calibration information, and wherein the calibration information includes at least one of holographic drive characteristics and encryption information.
10. The holographic system of claim 9 , further comprising:
a dichroic mirror layer between the holographic recording layer and the DVD reflective layer, wherein the dichroic mirror layer is operable to reflect the data laser light and to pass through the information laser light.
11. The holographic system of claim 9 , further comprising:
a reflective separation layer between the holographic recording layer and the DVD reflective layer, wherein the reflective separation layer is operable to reflect the data laser light.
12. The holographic system of claim 9 ,
wherein the data laser light has a first wavelength;
wherein the information laser light has a second wavelength; and
wherein the first wavelength and the second wavelength are different.
13. The holographic system of claim 9 ,
wherein the data laser light has a first focal point;
wherein the information laser light has a second focal point; and
wherein the first focal point and the second focal point are different.
14. The holographic system of claim 9 ,
wherein the data laser light has a first polarization;
wherein the information laser light has a second polarization; and
wherein the first polarization and the second polarization are different.
15. The holographic system of claim 9 , wherein the control information includes servo information.
16. A holographic system, comprising:
a holographic storage media including
a holographic recording layer for storing holographic data, and
a DVD reflective layer for storing control information, the DVD reflective layer being positioned within the holographic storage media relative to the holographic recording layer wherein the holographic recording layer is individually optically accessible by a data laser light for processing the holographic data and wherein the DVD reflective layer is individually optically accessible by an information laser light for processing the control information; and
a holographic drive operable to emit the data laser light and the information laser light,
wherein the holographic storage media has an exterior surface including a plurality of physically separate light transparent faces;
wherein the holographic recording layer is individually optically accessible by the data laser light through a first light transparent face of the holographic storage media; and
wherein the DVD reflective layer is individually optically accessible by the information laser light on a second light transparent face of the holographic storage media.