Digital film grain
First Claim
Patent Images
1. A digital film grain for detection of x-rays which comprises:
- a photodetector which produces an electrical signal having a strength which is related to an input x-ray flux; and
a transponder which receives said electrical signal and transmits information quantifying said electrical signal.
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Accused Products
Abstract
A digital film grain (20) comprises a phototransistor (40) which produces an electrical signal having a strength which is related to an input radiation flux. A transponder receives commands and power from a base station (80) and transmits information quantifying the radiation observed by that digital film grain. An image accumulator (84) connected to the base station (80) assembles an image from the profile of radiation reported by a distribution of digital film grains correlated to the locations of those grains.
59 Citations
35 Claims
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1. A digital film grain for detection of x-rays which comprises:
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a photodetector which produces an electrical signal having a strength which is related to an input x-ray flux; and
a transponder which receives said electrical signal and transmits information quantifying said electrical signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A distribution of two or more digital film grains, each of which comprises:
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a photodetector which produces electrical signal having a strength which is related to an input light flux; and
a transponder which receives said electrical signal and transmits information quantifying said electrical signal.
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21. An imaging system comprising:
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a distribution of two or more digital film grains;
a base station containing a transponder capable of sending information to and receiving information from to said digital film grains; and
an image accumulator which assembles signals related to an light flux received at said digital film grains and arranging said signals in an order dependent upon a location of each of said digital grains.
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22. A storage and communication device for a digital film grain location map comprising:
a radio frequency identification (RFID) tag comprising a list of film grain identification numbers each of which is paired with a location of each of said digital film grains. - View Dependent Claims (23)
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24. A digital x-ray film grain comprising:
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a charge detector which produces an electrical signal having a strength which is related to an input charge flux;
a transponder which receives said electrical signal and transmits information quantifying said electrical signal; and
a coating applied to said digital film grain for converting x-ray flux to a charge flux.
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25. A method of acquiring an image by:
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detecting an irradiance profile with a distribution of digital film grains;
sending a signal and an identification number from each of said digital film grains to an image accumulator;
determining a location of each of said digital film grains in said distribution;
assembling said signals from said digital film grains in an order according to said location of each of said digital film grain.
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26. A method for determining locations of digital film grains in a distribution by:
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directing a spot of irradiation to which said distribution is sensitive toward said distribution, wherein at least one dimension of said spot of irradiation is smaller than a smallest distance between said digital film grains;
recording said location of each of said spots of irradiation;
recording signals from said digital film grains in said distribution; and
correlating said location of said spot of irradiation to each of said digital film grains sending a signal exceeding a predetermined threshold. - View Dependent Claims (27)
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28. A micro-array which comprises:
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a plurality of photodetectors, each of which produces an electrical signal having a strength which is related to an input photon flux; and
a transponder which receives said electrical signals and transmits information quantifying said electrical signals.
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29. A micro-array grain which comprises:
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a plurality of photodetectors each of which produces an electrical signal having a strength which is related to an input photon flux; and
a plurality of transponders, each of which receives said electrical signals from at least some of said photodetectors and transmits information quantifying said electrical signal.
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30. A digital film grain for detection of ionizing radiation which comprises:
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a photodetector which produces an electrical signal having a strength which is related to an input radiation flux; and
a transponder which receives said electrical signal and transmits information quantifying said electrical signal.
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31. A digital film grain which comprises:
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a photodetector which produces an electrical signal having a strength which is related to an input light flux; and
a transponder which receives said electrical signal and transmits information quantifying said electrical signal. - View Dependent Claims (32)
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33. A digital film grain for detection of visible light, ultraviolet, or infrared radiation which comprises:
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a photodetector which produces an electrical signal having a strength which is related to an input radiation;
a transponder which receives said electrical signal and transmits information quantifying said electrical signal; and
wherein components of said digital film grain are fabricated on a single substrate. - View Dependent Claims (34, 35)
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Specification