High capacity digital data storage by transmission of radiant energy through arrays of small diameter holes
First Claim
1. A method for making a storage medium having data stored thereon, the method comprising:
- forming a first layer, the first layer being substantially transparent to a first radiant energy of a predetermined optical wavelength used for reading the data;
forming a second layer on the first layer which is substantially opaque to said first radiant energy; and
forming a pattern comprising a plurality of holes in the second layer, at least one of the holes having a largest dimension which is greater than said predetermined optical wavelength, the data being stored as the presence or absence of a hole in the pattern;
wherein said first radiant energy passes through said first layer and said second layer at substantially the same said predetermined optical wavelength.
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Accused Products
Abstract
A method is provided for making the storage media having data stored thereon. In one aspect of the making of storage media, a first layer is formed, where the first layer is substantially transparent to a predetermined first radiant energy used for reading the data. Next, a second layer is formed on the first layer, which is substantially opaque to the first radiant energy. Finally, a pattern is formed that comprises a plurality of holes in the second layer, where each of the holes have a largest dimension which is greater than a wavelength of the first radiant energy, and the data is stored as the presence or absence of a hole in the pattern.
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Citations
20 Claims
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1. A method for making a storage medium having data stored thereon, the method comprising:
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forming a first layer, the first layer being substantially transparent to a first radiant energy of a predetermined optical wavelength used for reading the data; forming a second layer on the first layer which is substantially opaque to said first radiant energy; and forming a pattern comprising a plurality of holes in the second layer, at least one of the holes having a largest dimension which is greater than said predetermined optical wavelength, the data being stored as the presence or absence of a hole in the pattern; wherein said first radiant energy passes through said first layer and said second layer at substantially the same said predetermined optical wavelength. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for making a storage medium having data stored thereon, the method comprising:
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forming a first layer, the first layer being substantially transparent to a first radiant energy of a predetermined optical wavelength used for reading the data; forming a second layer on the first layer which is substantially opaque to said first radiant energy; and forming a pattern comprising a plurality of holes in the second layer, at least one of the holes having a largest dimension which is greater than said predetermined optical wavelength, the data being stored as the presence or absence of a hole in the pattern; wherein the pattern of the plurality of holes are 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 the track pitch is about 100 nanometers.
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19. A method for making a storage medium having data stored thereon, the method comprising:
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forming a first layer, the first layer being substantially transparent to a first radiant energy of a predetermined optical wavelength used for reading the data; forming a second layer on the first layer which is substantially opaque to said first radiant energy; forming a pattern comprising a plurality of holes in the second layer, at least one of the holes having a largest dimension which is greater than said predetermined optical wavelength, the data being stored as the presence or absence of a hole in the pattern; and forming a third layer on the second layer, the third layer being substantially transparent to the first radiant energy.
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20. A method for making a storage medium having data stored thereon, the method comprising:
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forming a first layer, the first layer being substantially transparent to a first radiant energy of a predetermined optical wavelength used for reading the data; forming a second layer on the first layer which is substantially opaque to said first radiant energy; and forming a pattern comprising a plurality of holes in the second layer, at least one of the holes having a largest dimension which is greater than said predetermined optical wavelength, the data being stored as the presence or absence of a hole in the pattern; wherein the plurality of holes are formed by a second radiant energy having a wavelength less than said predetermined optical wavelength.
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Specification