Patents by Inventor Victor C. Wong
Victor C. Wong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20080063998Abstract: An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image (122) from the tooth and a second spectral range for exciting a fluorescence image (120) from the tooth. A polarizing beamsplitter (18) in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the second polarization state is orthogonal to the first polarization state. A first lens (22) in the return path directs image-bearing light from the tooth toward the sensor (68), and obtains image data from the portion of the light having the second polarization state. A long-pass filter (15) in the return path attenuates light in the second spectral range.Type: ApplicationFiled: September 12, 2006Publication date: March 13, 2008Inventors: Rongguang Liang, Victor C. Wong, Michael A. Marcus, Mark E. Bridges, Paul O, McLaughlin, Peter D. Burns, David L. Patton
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Publication number: 20080062429Abstract: A method for obtaining an image of a tooth obtains an area image of the tooth (20) surface and identifies a region of interest from the area image by positioning a marker (146) on the area image. The marker (146) corresponds to at least a portion of the region of interest and identifies a scanning area. An optical coherence tomography (OCT) image is then obtained over the scanning area.Type: ApplicationFiled: September 12, 2006Publication date: March 13, 2008Inventors: Rongguang Liang, Michael A. Marcus, Peter D. Burns, Victor C. Wong, Paul O. McLaughlin, Mark E. Bridges, David L. Patton
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Publication number: 20080056551Abstract: A method for forming an enhanced image of tooth tissue for caries detection obtains fluorescence (50) and reflectance (52) image data from a tooth (20). Each pixel in the fluorescence image data is combined with its corresponding pixel in the reflectance image data by subtracting an offset to the reflectance image data value to generate an offset reflectance image data value, and then computing an enhanced image data value according to the difference between the fluorescence image data value and the offset reflectance image data value, whereby the enhanced image (64) is formed from the resulting pixel array of enhanced image data values.Type: ApplicationFiled: August 31, 2006Publication date: March 6, 2008Inventors: Victor C. Wong, Rongguang Liang
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Patent number: 7340607Abstract: A method for preserving a digitally signed document (160) in a digital data preservation system (10). A secure preservation request (176) combines the document (160) with a preservation signature (174) that is generated using an identification mark (172) and the document's associated digital signature (168). Once the document (160) is authenticated by the digital preservation system vendor, both the document (160) and the identification mark (172) are recorded onto preservation media (210) in human-readable form.Type: GrantFiled: February 4, 2003Date of Patent: March 4, 2008Assignee: Eastman Kodak CompanyInventors: Vishwas G. Abhyankar, Victor C. Wong, Robert V. Reisch, Robert Breslawski, Robert S. Jones, Donald R. Williams, Robert B. Bayley, Badhri Narayan, Louis S. Horvath
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Patent number: 7340482Abstract: A digital preservation system (10) for accepting a digital data record as input, for providing a preview of the digital data record on a display screen (80), for writing the data record in human-readable form onto a preservation-quality medium (210), for storage of the medium (210), and for retrieval of the data record from the medium (210. The digital preservation system (10) preserves a data record in human-readable form, along with an associated metadata record, allowing the human-readable preserved data record to be readable in the distant future, independent of specific reading hardware. A preview function allows an operator to specify storage and retrieval characteristics for the data record.Type: GrantFiled: June 12, 2002Date of Patent: March 4, 2008Assignee: Eastman Kodak CompanyInventors: Vishwas G. Abhyankar, Victor C. Wong, Robert Breslawski, Robert S. Jones, Badhri Narayan, Robert V. Reisch, Donald R. Williams, Robert B. Bayley, Nelson A. Blish, Louis G. Horvath
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Patent number: 7224379Abstract: A contact printing apparatus (100), using a direct-coupled emissive array (20) of individual light emitting pixels (22), forms an image from digital data onto a photosensitive medium (16). The direct-coupled emissive array (20) is fabricated on an optically coupled substrate (25) that provides light-directing elements, such as a lenslet array or fiber optic faceplate (40) for directing light from emitter pixels (22) to print pixel (71) locations on the photosensitive medium (16).Type: GrantFiled: May 3, 2004Date of Patent: May 29, 2007Assignee: Eastman Kodak CompanyInventors: Victor C. Wong, Badhri Narayan, Gareth B. Evans
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Patent number: 7212322Abstract: A digital preservation system (10) for accepting a digital data record as input, for providing a preview of the digital data record on a display screen (80), for writing the data record in human-readable form onto a preservation-quality medium (210), for storage of the medium (210), and for retrieval of the data record from the medium (210). The digital preservation system (10) preserves a data record in human-readable form, along with an associated metadata record, allowing the human-readable preserved data record to be readable in the distant future, independent of specific reading hardware. The preview function allows an operator to specify storage and retrieval characteristics for the data record.Type: GrantFiled: March 15, 2002Date of Patent: May 1, 2007Assignee: Eastman Kodak CompanyInventors: Vishwas G. Abhyankar, Victor C. Wong, Robert Breslawski, Robert S. Jones, Badhri Narayan, Robert V. Reisch, Donald R. Williams, Robert B. Bayley, Lou Horvath, Nelson G. Blish
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Patent number: 7177476Abstract: A method for decoding data that has been encoded in a monochrome medium utilizing the capability of the medium for grayscale resolution. A document is processed to provide an image in electronic format, in which each pixel has an assigned data value with a given bit depth. A mapping operation is performed for generating a monochrome data word (120), preferably having a reduced bit depth. The monochrome data word (120) can be used to encode multiple data fields (114, 116, 118). A printer (92) then produces a preserved document record (90) in which the appropriate monochrome data word (120) determines the grayscale value for each pixel. To decode the stored data, a scanner (86) is employed to obtain the grayscale value from the preserved document record (90). For each pixel, the grayscale value is then decomposed into multiple data fields (114, 116, 118), which can then be decoded to provide the information that was originally encoded.Type: GrantFiled: February 28, 2002Date of Patent: February 13, 2007Assignee: Eastman Kodak CompanyInventors: Vishwas G. Abhyankar, Victor C. Wong, Robert Breslawski, Robert S. Jones, Badhri Narayan, Robert V. Reisch, Donald R. Williams, Robert B. Bayley, Richard Weil, Robert G. Duncan
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Patent number: 7042483Abstract: An apparatus and method for printing images from a digital image source onto a photosensitive medium (22) using one or more two-dimensional light-emissive arrays (51) such as OLED arrays. Each image pixel has a corresponding light-emitting element which is assigned a variable intensity based on data for that pixel. Imaging optics (58) direct the light from each light-emitting element onto the photosensitive medium (22) so that a monochromatic or multicolor image can be formed with a single exposure.Type: GrantFiled: March 10, 2003Date of Patent: May 9, 2006Assignee: Eastman Kodak CompanyInventors: Victor C. Wong, Robert V. Reisch, Robert Breslawski, Vishwas G. Abhyankar, Robert S. Jones, Donald R. Williams, Robert B. Bayley, Badhri Narayan
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Patent number: 7023463Abstract: An apparatus for printing images from digital image data onto a light sensitive medium disposed at an image plane which comprises a control logic processor capable of controlling the operation of the apparatus for printing based on the digital image data. An image forming assembly directs an exposure beam to the light sensitive medium disposed at the image plane. The image forming assembly (10) comprises a light source, a first lens assembly (41), a beamsplitter (50), a spatial light modulator (52), a temperature profile control apparatus (51) and a second lens assembly (132).Type: GrantFiled: July 22, 2003Date of Patent: April 4, 2006Assignee: Eastman Kodak CompanyInventors: Sujatha Ramanujan, Julie K. Gerstenberger, Victor C. Wong
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Patent number: 7003166Abstract: A method for encoding data in a monochrome media utilizing the capability of the media for grayscale resolution. A document is processed to provide an image in electronic format, in which each pixel has an assigned data value with a given bit depth. A mapping operation is performed for generating a monochrome data word (120), preferably having a reduced bit depth. The monochrome data word (120) can be used to encode multiple data fields (114, 116, 118). A printer (92) then produces a preserved document record (90) in which the appropriate monochrome data word (120) determines the grayscale value for each pixel.Type: GrantFiled: January 29, 2002Date of Patent: February 21, 2006Assignee: Eastman Kodak CompanyInventors: Vishwas G. Abhyankar, Victor C. Wong, Robert Breslawski, Robert S. Jones, Badhri Narayan, Robert V. Reisch, Donald R. Williams, Robert B. Bayley, Richard Weil, Robert G. Duncan
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Publication number: 20040179088Abstract: An apparatus and method for printing images from a digital image source onto a photosensitive medium (22) using one or more two-dimensional light-emissive arrays (51) such as OLED arrays. Each image pixel has a corresponding light-emitting element which is assigned a variable intensity based on data for that pixel. Imaging optics (58) direct the light from each light-emitting element onto the photosensitive medium (22) so that a monochromatic or multicolor image can be formed with a single exposure.Type: ApplicationFiled: March 10, 2003Publication date: September 16, 2004Applicant: Eastman Kodak CompanyInventors: Victor C. Wong, Robert V. Reisch, Robert Breslawski, Vishwas G. Abhyankar, Robert S. Jones, Donald R. Williams, Robert B. Bayley, Badhri Narayan
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Publication number: 20040153653Abstract: A method for preserving a digitally signed document (160) in a digital data preservation system (10). A secure preservation request (176) combines the document (160) with a preservation signature (174) that is generated using an identification mark (172) and the document's associated digital signature (168). Once the document (160) is authenticated by the digital preservation system vendor, both the document (160) and the identification mark (172) are recorded onto preservation media (210) in human-readable form.Type: ApplicationFiled: February 4, 2003Publication date: August 5, 2004Applicant: Eastman Kodak CompanyInventors: Vishwas G. Abhyankar, Victor C. Wong, Robert V. Reisch, Robert Breslawski, Robert S. Jones, Donald R. Williams, Robert B. Bayley, Badhri Narayan, Louis S. Horvath
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Publication number: 20030233371Abstract: A digital preservation system (10) for accepting a digital data record as input, for providing a preview of the digital data record on a display screen (80), for writing the data record in human-readable form onto a preservation-quality medium (210), for storage of the medium (210), and for retrieval of the data record from the medium (210. The digital preservation system (10) preserves a data record in human-readable form, along with an associated metadata record, allowing the human-readable preserved data record to be readable in the distant future, independent of specific reading hardware. A preview function allows an operator to specify storage and retrieval characteristics for the data record.Type: ApplicationFiled: June 12, 2002Publication date: December 18, 2003Applicant: Eastman Kodak CompanyInventors: Vishwas G. Abhyankar, Victor C. Wong, Robert Breslawski, Robert S. Jones, Badhri Narayan, Robert V. Reisch, Donald R. Williams, Robert B. Bayley, Nelson A. Blish, Louis G. Horvath
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Patent number: 6646716Abstract: A method and apparatus for printing multiple simultaneous images onto a photosensitive media comprises the steps of imaging light from a light source through an optics assembly (75) to a polarization beamsplitter (80). The polarization beamsplitter (80) produces light having a first polarized state and light having a second polarized state. The first polarized light is directed to a first spatial light modulator (90). The first spatial light modulator is addressed with a first signal to create a first modulated light beam, which is imaged through a print lens assembly onto the photosensitive media. A second polarized light is directed to a second spatial light modulator (95). The second spatial light modulator is addressed with a second signal to create a second modulated light beam, which is imaged through the print lens onto the photosensitive media. The first modulated light beam and the second modulated light beam create at least two simultaneous images on the photosensitive media.Type: GrantFiled: July 27, 2000Date of Patent: November 11, 2003Assignee: Eastman Kodak CompanyInventors: Sujatha Ramanujan, Victor C. Wong, Badhri Narayan, Dan S. Talbot
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Publication number: 20030174349Abstract: A digital preservation system (10) for accepting a digital data record as input, for providing a preview of the digital data record on a display screen (80), for writing the data record in human-readable form onto a preservation-quality medium (210), for storage of the medium (210), and for retrieval of the data record from the medium (210). The digital preservation system (10) preserves a data record in human-readable form, along with an associated metadata record, allowing the human-readable preserved data record to be readable in the distant future, independent of specific reading hardware. The preview function allows an operator to specify storage and retrieval characteristics for the data record.Type: ApplicationFiled: March 15, 2002Publication date: September 18, 2003Applicant: Eastman Kodak CompanyInventors: Vishwas G. Abhyankar, Victor C. Wong, Robert Breslawski, Robert S. Jones, Badhri Narayan, Robert V. Reisch, Donald R. Williams, Robert B. Bayley, Lou Horvath, Nelson G. Blish
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Publication number: 20030161016Abstract: A method for decoding data that has been encoded in a monochrome medium utilizing the capability of the medium for grayscale resolution. A document is processed to provide an image in electronic format, in which each pixel has an assigned data value with a given bit depth. A mapping operation is performed for generating a monochrome data word (120), preferably having a reduced bit depth. The monochrome data word (120) can be used to encode multiple data fields (114, 116, 118). A printer (92) then produces a preserved document record (90) in which the appropriate monochrome data word (120) determines the grayscale value for each pixel. To decode the stored data, a scanner (86) is employed to obtain the grayscale value from the preserved document record (90). For each pixel, the grayscale value is then decomposed into multiple data fields (114, 116, 118), which can then be decoded to provide the information that was originally encoded.Type: ApplicationFiled: February 28, 2002Publication date: August 28, 2003Applicant: Eastman Kodak CompanyInventors: Wishwas G. Abhyankar, Victor C. Wong, Robert Breslawski, Robert S. Jones, Badhri Narayan, Robert V. Reisch, Donald R. Williams, Robert B. Bayley, Richard Weil, Robert G. Duncan
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Patent number: 6603499Abstract: A printhead having a plurality of exposure elements (18) with improved non-uniformity correction. Spatial variance of the energy emitted by the exposure elements (18) is measured and used to establish spot size characteristics for each exposure element. A sensor (26) scans multiple points along the pixel area written by each exposure element (18) and measures a corresponding output power value at each point. The output power values are evaluated to determine a maximum output power value for the exposure element (18) and to obtain a spot size for the exposure element (18) based on full-width at half-power values. Both spot size data, which can thus be obtained and stored only once, and output power values are then used to correct for non-uniformity's between the exposure elements (18).Type: GrantFiled: June 26, 2001Date of Patent: August 5, 2003Assignee: Eastman Kodak CompanyInventors: Victor C. Wong, Badhri Narayan
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Publication number: 20030142327Abstract: A method for encoding data in a monochrome media utilizing the capability of the media for grayscale resolution. A document is processed to provide an image in electronic format, in which each pixel has an assigned data value with a given bit depth. A mapping operation is performed for generating a monochrome data word (120), preferably having a reduced bit depth. The monochrome data word (120) can be used to encode multiple data fields (114, 116, 118). A printer (92) then produces a preserved document record (90) in which the appropriate monochrome data word (120) determines the grayscale value for each pixel.Type: ApplicationFiled: January 29, 2002Publication date: July 31, 2003Applicant: Eastman Kodak CompanyInventors: Vishwas G. Abhyankar, Victor C. Wong, Robert Breslawski, Robert S. Jones, Badhri Narayan, Robert V. Reisch, Donald R. Williams, Robert B. Bayley, Richard Weil, Robert G. Duncan
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Patent number: 6580490Abstract: A printer (100) able to print in a plurality of output formats depending on width of media (160) loaded in the printer (100) is disclosed. The printer (100) provides high resolution and grayscale imaging capability for monochromatic applications. Illumination optics (11) receive a source light beam, from one or more LEDs, uniformize and polarize the beam and direct the beam through a polarization beamsplitter (50). The polarization beamsplitter (50) directs one polarization state of light to one or more LCD spatial light modulators (52), which modulate the polarization of the polarized beam to provide output exposure energy suitable for image marking on media (160). An optional sensor (234) allows printer (100) to automatically detect the width of a given type of media (160) in order to select from a set of compatible output format. Multiple segments of media (160) at the image plane (150) simultaneously.Type: GrantFiled: October 30, 2000Date of Patent: June 17, 2003Assignee: Eastman Kodak CompanyInventors: Victor C. Wong, Badhri Narayan, Sujatha Ramanujan, Dan S. Talbot