Patents by Inventor Michael L. Reisch

Michael L. Reisch 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).

  • Publication number: 20090128613
    Abstract: A thermal printer is disclosed which includes a plurality of thermal print heads, each of the plurality of thermal print heads being operable to print a distinct one of a plurality of colors. The plurality of thermal print heads may print output at a plurality of spatial resolutions. The thermal printer may include dot size varying means for varying perceived levels of color printed by the thermal printer by varying sizes of dots printed by the plurality of thermal print heads. The printer may perform various image processing steps on an image to be printed, such as tone scale adjustment, thermal history control, and common mode voltage correction, to improve the perceived quality of the printed image. The thermal printer may be incorporated into a digital photo-printing vending machine for printing images provided by a customer.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 21, 2009
    Inventors: Alain Bouchard, Brian D. Busch, Daniel P. Bybell, Anemarie DeYoung, Sandra B. Lawrence, Michael L. Reisch, Suhail S. Saquib, Dana F. Schuh, Stephen J. Telfer, Jay E. Thornton, William T. Vetterling, Michael S. Viola
  • Patent number: 6842186
    Abstract: A thermal printer is disclosed which includes a plurality of thermal print heads, each of the plurality of thermal print heads being operable to print a distinct one of a plurality of colors. The plurality of thermal print heads may print output at a plurality of spatial resolutions. The thermal printer may include dot size varying means for varying perceived levels of color printed by the thermal printer by varying sizes of dots printed by the plurality of thermal print heads. The printer may perform various image processing steps on an image to be printed, such as tone scale adjustment, thermal history control, and common mode voltage correction, to improve the perceived quality of the printed image. The thermal printer may be incorporated into a digital photo-printing vending machine for printing images provided by a customer.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: January 11, 2005
    Assignee: Polaroid Corporation
    Inventors: Alain Bouchard, Brian D. Busch, Daniel P. Bybell, Anemarie DeYoung, Sandra B. Lawrence, Michael L. Reisch, Suhail S. Saquib, Dana F. Schuh, Stephen J. Telfer, Jay E. Thornton, William T. Vetterling, Michael S. Viola
  • Publication number: 20040207712
    Abstract: A thermal printer is disclosed which includes a plurality of thermal print heads, each of the plurality of thermal print heads being operable to print a distinct one of a plurality of colors. The plurality of thermal print heads may print output at a plurality of spatial resolutions. The thermal printer may include dot size varying means for varying perceived levels of color printed by the thermal printer by varying sizes of dots printed by the plurality of thermal print heads. The printer may perform various image processing steps on an image to be printed, such as tone scale adjustment, thermal history control, and common mode voltage correction, to improve the perceived quality of the printed image. The thermal printer may be incorporated into a digital photo-printing vending machine for printing images provided by a customer.
    Type: Application
    Filed: May 12, 2004
    Publication date: October 21, 2004
    Applicant: Polaroid Corporation
    Inventors: Alain Bouchard, Brian D. Busch, Daniel P. Bybell, Anemarie DeYoung, Sandra B. Lawrence, Michael L. Reisch, Suhail S. Saquib, Dana F. Schuh, Stephen J. Telfer, Jay E. Thornton, William T. Vetterling, Michael S. Viola
  • Publication number: 20020191066
    Abstract: A thermal printer is disclosed which includes a plurality of thermal print heads, each of the plurality of thermal print heads being operable to print a distinct one of a plurality of colors. The plurality of thermal print heads may print output at a plurality of spatial resolutions. The thermal printer may include dot size varying means for varying perceived levels of color printed by the thermal printer by varying sizes of dots printed by the plurality of thermal print heads. The printer may perform various image processing steps on an image to be printed, such as tone scale adjustment, thermal history control, and common mode voltage correction, to improve the perceived quality of the printed image. The thermal printer may be incorporated into a digital photo-printing vending machine for printing images provided by a customer.
    Type: Application
    Filed: February 22, 2002
    Publication date: December 19, 2002
    Inventors: Alain Bouchard, Brian D. Busch, Daniel P. Bybell, Anemarie DeYoung, Sandra B. Lawrence, Michael L. Reisch, Suhail S. Saquib, Dana F. Schuh, Stephen J. Telfer, Jay E. Thornton, William T. Vetterling, Michael S. Viola
  • Patent number: 5933537
    Abstract: A method and apparatus are disclosed for converting frequency-coefficient matrices between a configuration in which the matrices are transforms of unoverlapped image-data matrices and a configuration in which the matrices are transforms of overlapped image-data matrices, the image-data matrices comprising image-data terms corresponding to pixels from an original image, the method comprising the steps of: deriving a conversion matrix; transposing the conversion matrix; matrix multiplying a first frequency-coefficient matrix of one configuration by the conversion matrix; matrix multiplying a second frequency-coefficient matrix of the same configuration by the transpose conversion matrix; and combining the product results to form a matrix formatted in the other configuration.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: August 3, 1999
    Assignee: Polaroid Corporation
    Inventors: Ibrahim Hajjahmad, Munib A. Wober, Michael L. Reisch
  • Patent number: 5887084
    Abstract: A method or system for structuring an image which corresponds to an original array of pixels, as a forward discrete even cosine transform (DCT) pyramid having a predetermined number of levels where each level is associated with a different DCT frequency band, includes, respectively, the steps or functionality of: partitioning the original array into blocks of overlapped pixels; taking a DCT of each block of overlapped pixels to generate blocks of first level DCT coefficients forming a first level of the DCT pyramid; storing the first level of the DCT pyramid; selecting and storing at least one of the first level DCT coefficients of each block of first level DCT coefficients into a first temporary array; partitioning the first temporary array into blocks of overlapped coefficients; and taking a DCT of each block of overlapped coefficients of the first temporary array to generate blocks of second level DCT coefficients forming a second level of the DCT pyramid.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: March 23, 1999
    Assignee: Polaroid Corporation
    Inventors: Munib A. Wober, Yibing Yang, Ibrahim Hajjahmad, Lon E. Sunshine, Michael L. Reisch
  • Patent number: 5774598
    Abstract: An image processing system for sample rate conversion of an image signal representing an image of pixels from a first sample rate to a second sample rate includes: an image acquisition device for acquiring the image signal from an image signal source at the first sample rate; a first memory for buffering the input signal; a second memory for storing predetermined discrete cosine transform coefficients; a dot product multiplier for multiplying the image signal retrieved from the first memory times the predetermined coefficients to produce an output signal at the second sampling rate; a third memory for buffering the output signal; control sequencer logic for controlling operation of the image processing system; and an output device for providing a resampled image at the second sampling rate from the output signal. The image processing system facilitates sample rate conversion by segmenting the image into segments of image data points wherein a separate and different offset is determined for each segment.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: June 30, 1998
    Assignee: Polaroid Corporation
    Inventors: Lon E. Sunshine, Michael L. Reisch, Munib A. Wober
  • Patent number: 5748770
    Abstract: Full color resolution of an image is realized by reconstructing an array of image data points from an image signal representing the image into a shifted array of pseudo pixels. The particular grid type of the array will dictate whether color recovery uses only vertical resolution, only horizontal resolution, vertical resolution followed by horizontal resolution, or horizontal resolution followed by vertical resolution. For each color channel, interpolation of missing color components is accomplished by first, taking a DCT of the image data points, then taking a modified IDCT of the DCT coefficients.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: May 5, 1998
    Assignee: Polaroid Corporation
    Inventors: Ibrahim Hajjahmad, Michael L. Reisch, F. Richard Soini, Munib A. Wober
  • Patent number: 5740284
    Abstract: Image processing methods and apparatus by which images in the spatial domain can be represented in the frequency domain through the use of discrete cosine transforms, conveniently operated on to achieve scaling and filtering effects while in the frequency domain, and then retransformed to the spatial domain or stored, displayed, reproduced or transmitted to distant locations for subsequent reuse. The scaling techniques which the invention utilizes can be for image enlargement by interpolation or image reduction by decimation. In the case of decimation, a filtering operation preferably is first performed in the frequency domain to avoid artifacts in the decimation process. The filtering operation is mathematically equivalent to a linear convolution in the spatial domain as a consequence of the properties of the DCT transformation.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: April 14, 1998
    Assignee: Polaroid Corporation
    Inventors: Munib A. Wober, Michael L. Reisch
  • Patent number: 5729631
    Abstract: The invention relates to a novel process and system for removing noise from an image by first noise modeling an image signal source to generate noise masks and LUT values characteristic of noise at different frequency levels for each channel, and then applying the stored noise masks and LUT values to an image signal for noise removal. The image is first captured as an electronic image signal by the image signal source, then represented by a pyramid structure whereby each successive level of the pyramid is constructed from DC values of the previous level, and each level of the pyramid corresponds to a different frequency band of the image signal. A Wiener variant filter using DCT transforms is used to filter DCT coefficients at each level. The image is restored with reduced noise by replacing DC values with next level IDCT coefficients then performing an IDCT on the results.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: March 17, 1998
    Assignee: Polaroid Corporation
    Inventors: Munib A. Wober, Yibing Yang, Ibrahim Hajjahmad, Lon E. Sunshine, Michael L. Reisch
  • Patent number: 5719958
    Abstract: The image processing system of the present invention provides electronic edge detection in keeping with ISO/JPEG/MPEG international compression standards for electronic imaging. Specifically, a novel electronic image processing system for edge detection includes: an image acquisition device for acquiring and representing an image as an electronic image signal; a video memory for storing the image signal; a display for displaying the image signal; a raster to block converter for converting the image signal into block format; a DCT/IDCT processor for transforming the converted signal in accordance with predetermined basis matrices stored in a basis matrix memory; a mask multiplier for generating a mask multiplied signal in accordance with predetermined Laplacian matrices stored in an A matrix memory; a buffer for storing the mask multiplied signal; and a controller for controlling the image processing system in accordance with instructions from a central processing unit (CPU).
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: February 17, 1998
    Assignee: Polaroid Corporation
    Inventors: Munib A. Wober, Yibing Yang, Michael L. Reisch
  • Patent number: 5706216
    Abstract: A system for filtering an image during data compression using a standard JPEG compression/decompression chip typically requires a separate spatial filter external to the chip. The spatial filter is composed of numerous shift registers, flip-flops, multipliers and at least one adder. In contrast, an image filtering system which filters in the frequency domain using the inventive JPEG compression chip modified for filtering in the frequency domain does not require the separate spatial filter and its many components. The modified JPEG chip includes a raster to block converter which converts an image signal into 8.times.8 blocks, a DCT processor which converts the 8.times.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: January 6, 1998
    Inventor: Michael L. Reisch
  • Patent number: 5563718
    Abstract: Image coding methods and apparatus employing discrete cosine transforms for supressing and/or reducing blocking artifacts using a JPEG file format. The methods can be implemented on JPEG hardware slightly modified to provide access to discrete cosine transform coefficients. Filtering techniques by which an overlap procedure for implementing the inventive methods are also disclosed.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: October 8, 1996
    Assignee: Polaroid Corporation
    Inventors: Munib A. Wober, Michael L. Reisch
  • Patent number: 5168375
    Abstract: A method for processing a field of image data samples to provide for one or more of the functions of decimation, interpolation, and sharpening is accomplished by use of an array transform processor such as that employed in a JPEG compression system. Blocks of data samples are transformed by the discrete even cosine transform (DECT) in both the decimation and interpolation processes, after which the number of frequency terms is altered. In the case of decimation, the number of frequency terms is reduced, this being followed by inverse transformation to produce a reduced-size matrix of sample points representing the original block of data. In the case of interpolation, additional frequency components of zero value are inserted into the array of frequency components after which inverse transformation produces an enlarged data sampling set without an increase in spectral bandwidth.
    Type: Grant
    Filed: September 18, 1991
    Date of Patent: December 1, 1992
    Assignee: Polaroid Corporation
    Inventors: Michael L. Reisch, Munib A. Wober
  • Patent number: 5128692
    Abstract: Apparatus for effecting center pulse width modulation of electronic printer lighter emitting elements is disclosed. The most significaant bit of the energization pulse for the printer light emitting elements is centered and each succeeding less significant bit is divided in half so as to form a mirror image on each side of the centered most significant bit.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: July 7, 1992
    Assignee: Polaroid Corporation
    Inventor: Michael L. Reisch
  • Patent number: 4525729
    Abstract: An electronic imaging system includes a linear LED array for recording on a photosensitive medium an image defined by electronic signal information in binary word format by simultaneously controlling the energization of all the LED's at a constant energy level in a series of intervals, each of which is timed differently to correspond to a different one of the data bits in the binary words which comprise the image defining electronic signal information. Each LED is energized during each interval as a direct function of the state of the data bit corresponding to that interval for that LED.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: June 25, 1985
    Assignee: Polaroid Corporation
    Inventors: Martin A. Agulnek, Joseph M. Canter, Michael L. Reisch