IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0370758
(2006-03-08)
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등록번호 |
US-7623436
(2009-12-02)
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발명자
/ 주소 |
- Hunter, Charles Eric
- Ballou, Jr., Bernard L.
- Hebrank, John H.
- McNeil, Laurie
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
209 |
초록
▼
A storage media for storage of data thereon is provided. The storage media including: a first layer, the first layer being substantially transparent to a predetermined radiant energy used for reading the data; and a second layer formed on the first layer and being substantially opaque to the radiant
A storage media for storage of data thereon is provided. The storage media including: a first layer, the first layer being substantially transparent to a predetermined radiant energy used for reading the data; and a second layer formed on the first layer and being substantially opaque to the radiant energy, the second layer having a pattern comprising a plurality of holes, each of the holes having a largest dimension which is greater than a wavelength of the radiant energy, the data being stored as the presence or absence of a hole in the pattern. Also provided are a method for fabricating the storage media as well as an apparatus and method for reading the data stored on the storage media.
대표청구항
▼
What is claimed: 1. A storage media for storage of data thereon, the storage media comprising: a first layer being substantially transparent to a radiant energy of predetermined optical wavelength used for reading the data; a second layer formed on the first layer and being substantially opaque to
What is claimed: 1. A storage media for storage of data thereon, the storage media comprising: a first layer being substantially transparent to a radiant energy of predetermined optical wavelength used for reading the data; a second layer formed on the first layer and being substantially opaque to the radiant energy, the second layer having a pattern comprising a plurality of holes, at least one of the holes having a largest dimension which is greater than the predetermined optical wavelength of the radiant energy, the data being stored as the presence or absence of a hole in the pattern; and a third layer being disposed on the second layer and being substantially transparent to the radiant energy; wherein the first, second, and third layers are configured such that said radiant energy passes through said storage media at substantially the same predetermined optical wavelength. 2. The storage media of claim 1, wherein the first layer comprises polycarbonate. 3. The storage media of claim 1, wherein the second layer comprises a metalization coating. 4. The storage media of claim 3, wherein the metalization coating comprises aluminum. 5. The storage media of claim 1, wherein the plurality of holes are circular and the largest dimension is a diameter of the circular holes. 6. The storage media of claim 1, wherein the pattern comprises the plurality of holes arranged along a helix beginning near a center of the storage media and extending spirally outward, each successive pass of the helix being separated from a previous pass of the helix by a track pitch. 7. The storage media of claim 6, wherein the plurality of holes are circular and the largest dimension is a diameter of the circular holes, the diameter of the holes being in a range of about 30 to 100 nanometers. 8. A storage media for storage of data thereon, the storage media comprising: a first layer being substantially transparent to a radiant energy of predetermined optical wavelength used for reading the data; a second layer formed on the first layer and being substantially opaque to the radiant energy, the second layer having a pattern comprising a plurality of holes, at least one of the holes having a largest dimension which is greater than the predetermined optical wavelength of the radiant energy, the data being stored as the presence or absence of a hole in the pattern; and a third layer being disposed on the second layer and being substantially transparent to the radiant energy; wherein the pattern comprises the plurality of holes arranged along a helix beginning near a center of the storage media and extending spirally outward, each successive pass of the helix being separated from a previous pass of the helix by a track pitch; wherein a distance between successive holes is in a range of about 30 to 100 nanometers. 9. The storage media of claim 1, wherein the third layer comprises acrylic. 10. The storage media of claim 1, wherein the storage media is circular in shape and has a data storage area having an inner diameter of about 25 millimeters and an outer diameter of about 115 millimeters. 11. An apparatus for reading a storage media, the storage media comprising a first layer being substantially transparent to a radiant energy of a predetermined optical wavelength used for reading the data; and a second layer formed on the first layer and being substantially opaque to the radiant energy, the second layer having a pattern comprising a plurality of data holes, at least one of the data holes having a largest dimension which is greater than the predetermined optical wavelength of the radiant energy, the data being stored as the presence or absence of a data hole in the pattern; and a third layer that is disposed on the second layer and is substantially transparent to the radiant energy; wherein the first, second, and third layers are configured such that said radiant energy passes through said storage media at substantially the same predetermined optical wavelength, the apparatus comprising: a radiant energy source having an output of radiant energy capable of being directed towards said storage media; and a plurality of detectors configured to detect the radiant energy diffusing from the plurality of data holes of said storage media. 12. The apparatus of claim 11, wherein the radiant energy source comprises a blue laser diode. 13. The apparatus of claim 11, wherein the radiant energy source comprises an ultraviolet laser diode. 14. The apparatus of claim 11, wherein the radiant energy source has a wavelength in the range of about 50 nanometers to 450 nanometers. 15. The apparatus of claim 11, wherein the radiant energy source has a wavelength of about 410 nanometers. 16. The apparatus of claim 11, wherein the detectors comprise photodetectors. 17. The apparatus of claim 16, wherein the photodetectors comprise a wide bandgap material. 18. The apparatus of claim 17, wherein the wide bandgap material is selected from a group consisting of silicon carbide, gallium arsenide, gallium nitride, aluminum nitride, zinc selenide, gallium nitride/aluminum nitride alloy, aluminum nitride/silicon carbide alloy and aluminum gallium nitride/gallium nitride. 19. The apparatus of claim 11, further comprising a mask positioned between the storage media and the detectors for reducing interference from the radiant energy diffusing through unintended data holes. 20. The apparatus of claim 19, wherein the mask comprises a material having a pattern of mask holes arranged to restrict the number of data holes observed by a single detector. 21. The apparatus of claim 20, wherein the mask holes are rectangular in shape and have a smaller side dimension approximately equal to the largest dimension of the data holes. 22. The apparatus of claim 11, wherein the radiant energy source is positioned on the side of the storage media having the first layer and is directed towards the detectors that are positioned on the side of the storage media opposite the first layer. 23. A method for reading a storage media, the storage media comprising a first layer being substantially transparent to a radiant energy of a predetermined optical wavelength used for reading the data; and a second layer formed on the first layer and being substantially opaque to the radiant energy, the second layer having a pattern comprising a plurality of data holes, at least one of the data holes having a largest dimension which is greater than the predetermined optical wavelength of the radiant energy, the data being stored as the presence or absence of a data hole in the pattern; and a third layer that is disposed on the second layer wherein the third layer is substantially transparent to the radiant energy; wherein the first, second, and third layers are configured such that said radiant energy passes through said storage media at substantially the same predetermined optical wavelength, the method comprising: directing radiant energy from a radiant energy source towards said storage media; and detecting the radiant energy diffusing from the data holes of said storage media with a plurality of detectors. 24. The method of claim 23, wherein the radiant energy source comprises a blue laser diode. 25. The method of claim 23, wherein the radiant energy source comprises a ultraviolet laser diode. 26. The method of claim 23, wherein the radiant energy source has a wavelength in the range of about 50 nanometers to 450 nanometers. 27. The method of claim 23, wherein the radiant energy source has a wavelength of about 410 nanometers. 28. The method of claim 23, wherein the detectors comprise photodetectors. 29. The method of claim 28, wherein the photodetectors comprise a wide bandgap material. 30. The method of claim 29, wherein the wide bandgap material is selected form a group consisting of silicon carbide, gallium arsenide, gallium nitride, aluminum nitride, zinc selenide, gallium nitride/aluminum nitride alloy, aluminum nitride/silicon carbide alloy and aluminum gallium nitride/gallium nitride. 31. The method of claim 23, further comprising a mask positioned between the storage media and the detectors for reducing interference from the radiant energy diffusing through unintended data holes. 32. The method of claim 31, wherein the mask comprises a material having a pattern of mask holes arranged to restrict the number of data holes observed by a single detector. 33. The method of claim 32, wherein the mask holes are rectangular in shape and have a smaller side dimension approximately equal to the largest dimension of the data holes. 34. The method of claim 23, wherein the radiant energy source is positioned on the side of the storage media having the first layer and is directed towards the detectors which are positioned on the side of the storage media opposite the first layer.
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