Color Coded Patents (Class 235/469)
  • Patent number: 7227640
    Abstract: A photoelectric sensor includes a light-emitting element and a light-receiving element and detects a mark on an object. Prior to the detection of the mark, a reference received light quantity level is sampled for the surface of an object not including the mark, for every color of light. A mark received light quantity level is then sampled for every color of light. The difference is obtained between the reference received light quantity level and the corresponding mark received light quantity level for each color of light. A ratio of the obtained difference to the reference received light quantity level is obtained. For the colors of light where the difference equals or exceeds a predetermined value, the color of light having the largest ratio is selected for emission from the light-emitting element in the detection of the mark.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: June 5, 2007
    Assignee: Sunx Limited
    Inventor: Takayuki Ochiai
  • Patent number: 7185816
    Abstract: A barcode symbol having an encoded symbology is provided with color or shades of gray to add additional information at the time of printing. The color or shades of gray provides the current barcode symbology with a third dimension of information. The color or shades of gray can encode information over a specific one-dimensional or two-dimensional symbology. White spaces can be replaced with colors or shades of gray to add coded information to the standard one-dimensional and two-dimensional codes. The number of colors and how they are distributed or arranged can provide the basic backbone of information. A barcode reader that can detect the different color spectrums, can be employed to decode the information. Furthermore, color is not limited to white spaces, but can be implemented into black spaces. Additionally, colored background information can provide additional information to the current symbology.
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: March 6, 2007
    Assignee: Symbol Technologies, Inc.
    Inventor: Richard Allen Shoobridge
  • Patent number: 7020327
    Abstract: A machine readable code, a code encoding method and device and a code decoding method and device are provided. This machine readable code includes a data area made up of at least one data cell, in which different colors or shades are encoded and expressed depending on the content of the information, and a parity area made up of at least one parity cell, the parity area provided to determine whether colors or shades expressed in the data cells have been properly expressed depending on the content of the information. Since this code image includes a parity area for parity inspection, mal-recognition of colors due to differences between input devices such as cameras or between the environments such as light can be easily detected and corrected.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: March 28, 2006
    Assignee: ColorZip Media, Inc.
    Inventors: Han Tack-don, Cheong Cheol-ho, Lee Nam-kyu, Shin Eun-dong
  • Patent number: 7006248
    Abstract: A computer object such as text, graphics, mathematical formulas, images, audio, and other data and information handled inside a computer or through a computer in industry or daily life etc. is expressed, recorded, reproduced, and transmitted using color or a color numerical value. Color is used as a medium for expressing data or information taking note of the characteristics of color. This helps counter the ballooning amount of recording. Color can also be used to prepare codes.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: February 28, 2006
    Assignee: Tani Electronics Corporation
    Inventor: Okie Tani
  • Patent number: 6976631
    Abstract: A code reader for color images, which can simultaneously accept a one-dimensional code or a two-dimensional code and data of a color image of a subject for management and which can record both the data in mapping with each other, is provided. The code reader comprises color image pickup structure for picking up the code and also a color image of a subject for management as is specified by identification information contained in the code; code-recognizing-data extraction structure for extracting luminance data from the color image data picked up by the color image pickup structure, and for writing gray scale data into a first frame memory as data for recognizing the code; and recorded-image extraction structure for extracting color data from the color image data picked up by the color image pickup structure, and for writing the color data into a second frame memory.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: December 20, 2005
    Assignee: Tohken Co., Ltd.
    Inventors: Motofumi Kashi, Shinji Fujita
  • Patent number: 6922208
    Abstract: A methodology for tracking objects includes receiving a multiplicity of objects to be tracked at a known location. Each multiplicity of objects has at least one imagable identifier affixed to it. The method also includes imaging the multiplicity of objects together at the known location to provide at least a partial image of the multiplicity of objects. The method also includes employing the partial image to determine an identification code for a plurality of the multiplicity of objects, as well as associating each identification code with a known location code.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: July 26, 2005
    Assignee: Imageid Ltd.
    Inventors: Moti Shniberg, Yaron Nemet, Erez Sali
  • Patent number: 6902113
    Abstract: A method for color bar codes includes selecting N bar code colors for a color bar code system to be generally distinct from each other given the range of colors that a camera reader is expected to produce given at least one environmental condition in which the camera reader is expected to operate.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: June 7, 2005
    Assignee: ImageID Ltd.
    Inventors: Erez Sali, Michael Keselbrener
  • Patent number: 6874687
    Abstract: The level of light that impinges upon a CCD is construed to be low when a high-sensitivity image sensing mode has been set. Gain for high-sensitivity image sensing is set in a gain adjusting circuit (color balance adjusting circuit) and a color balance adjustment is performed based upon the set gain. Thus an appropriate color balance adjustment is carried out even if light having a low level impinges upon the CCD.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: April 5, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Koji Kubota
  • Patent number: 6834807
    Abstract: The present invention relates to an optical reader that includes a color imaging assembly that generates color imaging data. An image analysis circuit determines if the acquired image should be characterized as a color photograph or as including a graphical symbol. A processing circuit processes the imaging data based on the image analysis circuit's determination of whether the image is a graphical symbol or a color photograph. The present invention allows a user to acquire and process both color images and graphical symbols, such as bar codes, text, OCR symbols or signatures. The optical reader of the present invention is also configured to associate an acquired image with at least one other acquired image.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: December 28, 2004
    Assignee: Hand Held Products, Inc.
    Inventors: Michael Ehrhart, Andrew Longacre, Jr.
  • Publication number: 20040246529
    Abstract: A printed media product, such as a trading card, that has a substrate and an encoded data element applied to a surface of the substrate containing information. The encoded data element includes first, second, and third data layers with first, second, and third patterns of encoded, colored dots defined by a binary encoding scheme. The dots of the first, second, and third layers are different colors separately resolvable by a scanner with decoding software. The colors of the dots are cyan, yellow, and magenta, and the layers are printed so that the dots overlap. The binary encoding scheme includes a two dimensional run length limited code. The printed media product includes a graphics element that can be interpreted by a human user, and typically, the information encoded in the encoded data element layers is related to the information in the graphics element.
    Type: Application
    Filed: June 5, 2003
    Publication date: December 9, 2004
    Inventors: Benny J. Pruden, Peter W. LeMasters
  • Publication number: 20040206826
    Abstract: The level of light that impinges upon a CCD is construed to be low when a high-sensitivity image sensing mode has been set. Gain for high-sensitivity image sensing is set in a gain adjusting circuit (color balance adjusting circuit) and a color balance adjustment is performed based upon the set gain. Thus an appropriate color balance adjustment is carried out even if light having a low level impinges upon the CCD.
    Type: Application
    Filed: January 20, 2004
    Publication date: October 21, 2004
    Inventor: Koji Kubota
  • Patent number: 6801245
    Abstract: A system and methodology for tracking objects including affixing at least one imagable identifier onto each of a multiplicity of objects to be tracked, imaging at least a portion of at least one of the multiplicity of objects at a known location to provide an at least partial image of the at least one of the multiplicity of objects, containing the at least one imagable identifier and employing the at least partial image of the object containing the at least one imagable identifier to provide an output indication of the location of the at least one of the multiplicity of objects.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: October 5, 2004
    Assignee: Imageid Ltd.
    Inventors: Moti Shniberg, Yaron Nemet, Erez Sali
  • Publication number: 20040155110
    Abstract: The present invention relates to a method for managing mail/parcel item delivery. The mail/parcel item includes an optical indicia disposed thereon. The method includes capturing a first color image of the item. The first color image is stored in an electronic memory. A second color image of the optical indicia is captured. The optical indicia is decoded to thereby generate decoded data. The first color image is associated with the second color image and/or the decoded data. As a result, the first color image and the second color image and/or the decoded data are linked in the electronic memory. An image is displayed that includes the first color image and at least the decoded data.
    Type: Application
    Filed: January 26, 2004
    Publication date: August 12, 2004
    Inventors: Michael Ehrhart, Andrew Longacre
  • Patent number: 6775381
    Abstract: A print media has a visible image and a plurality of invisible encodements comprising data printed over it in a hierarchy order, wherein the encodement of the highest order represents a replacement or edited version of the data of lower order encodements. Apparatus and methods provide effectively editing of an existing invisible encodement printed on media with a material sensitive to a first light wavelength by printing an edited or replacement encodement over it with a material sensitive to a second light wavelength of higher order in the hierarchy. Apparatus and methods also provide for selectively reading the highest order encodement, all of the encodements or selected ones of the encodements.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: August 10, 2004
    Assignee: Eastman Kodak Company
    Inventors: David J. Nelson, Kevin W. Williams, Jose A. Rosario
  • Publication number: 20040121268
    Abstract: Optical media having markings that are non-interfering, or substantially non-interfering with readout of data from the optical media are disclosed. The optical media make use of certain formulations of color forming coatings described herein. Protective coatings used to enhance the color forming coatings are also presented. Methods for incorporating the coatings into the optical media are included. In preferred embodiments, the marking is formed in a photosensitive coating that is applied to the optical media, and then cured with a first light. A second light, having a substantially separate band of wavelengths from the first light, is used to image a marking into the coating. The coating is robust to many external influences, such as ambient environmental conditions, and physical wear.
    Type: Application
    Filed: November 5, 2003
    Publication date: June 24, 2004
    Applicant: Spectra Systems Corporation
    Inventors: Jeffrey L. Conroy, Robert S. Afzal, Allison Berube, Nabil M. Lawandy, Dana Lewis, Thomas Pizzuti, Andrei Smuk
  • Patent number: 6722569
    Abstract: The present invention relates to an optical reader that includes a color imaging assembly that generates color imaging data. An image analysis circuit determines if the acquired image should be characterized as a color photograph or as including a graphical symbol. A processing circuit processes the imaging data based on the image analysis circuit's determination of whether the image is a graphical symbol or a color photograph. The present invention allows a user to acquire and process both color images and graphical symbols, such as bar codes, text, OCR symbols or signatures. The optical reader of the present invention is also configured to associate an acquired image with at least one other acquired image.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: April 20, 2004
    Assignee: Welch Allyn Data Collection, Inc.
    Inventors: Michael Ehrhart, Andrew Longacre, Jr.
  • Publication number: 20040035937
    Abstract: A code reader for color images, which can simultaneously accept a one-dimensional code or a two-dimensional code and data of a color image of a subject for management and which can record both the data in mapping with each other, is provided.
    Type: Application
    Filed: May 21, 2003
    Publication date: February 26, 2004
    Inventors: Motofumi Kashi, Shinji Fujita
  • Patent number: 6661521
    Abstract: An illumination apparatus is provided for a hand-held imager preferably to provide diffuse illumination for encoded symbology carried directly upon an article (component, etc) or upon a substrate carried by an article. The illumination apparatus is disposed proximate the front of the hand-held imager and is configured to permit light reflected from the target to pass through the illumination apparatus and onto a CCD image receiver. An array of unlensed LED's is disposed to cast approximately or substantially lambertian illumination in a direction away from the target to be imaged and into the hand-held housing to impinge upon surfaces of an illuminator to receive the illumination and, in turn, project efficient and diffuse dark field illumination through the array of unlensed LED's and towards and onto a location where a target to be imaged would be disposed.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: December 9, 2003
    Assignee: Robotic Vision Systems, Inc.
    Inventor: Howard Stern
  • Patent number: 6647142
    Abstract: A method dynamically identifies a badge in a sequence of images of a scene acquired by a camera. Each image in the sequence includes a plurality of pixels, and each pixel has a color and an intensity. Each image is scanned to detect a border pixel. Adjacent pixels to the border pixel are connected to determine a connected region of pixels. An inner boundary of the connected region is determined, and an ellipse is fitted to the inner boundary. The internal pixels inside the ellipse are distorted to a circular form, and a plurality of spokes are fitted to the distorted internal pixels to identify colored segments. Then, an unique identity is associated with each badge according to the colored segments.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: November 11, 2003
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventor: Paul Beardsley
  • Publication number: 20030127519
    Abstract: The present invention relates to an optical reader that includes a color imaging assembly that generates color imaging data. An image analysis circuit determines if the acquired image should be characterized as a color photograph or as including a graphical symbol. A processing circuit processes the imaging data based on the image analysis circuit's determination of whether the image is a graphical symbol or a color photograph. The present invention allows a user to acquire and process both color images and graphical symbols, such as bar codes, text, OCR symbols or signatures. The optical reader of the present invention is also configured to associate an acquired image with at least one other acquired image.
    Type: Application
    Filed: January 17, 2003
    Publication date: July 10, 2003
    Applicant: WELCH ALLYN DATA COLLECTION, INC.
    Inventors: Michael Ehrhart, Andrew Longacre
  • Patent number: 6572025
    Abstract: An information code product (101) comprising a body (105) having a code-including image (104) formed thereon which includes at least one unit of information codes (103) with one or more specific color, wherein the unit of information codes is adapted to be obtained by extracting an image with the specific color from the code-including image. A user is authenticated by an authentication system (301) which comprises an authentication terminal (302) for reading data included in the product (101) and an authentication server (303) which is interconnected to the authentication terminal through a network (304).
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: June 3, 2003
    Assignee: Japan Gain The Summit Co., Ltd.
    Inventors: Hiroshi Nishikado, Satoshi Shimazaki, Tatahiro Miwa
  • Patent number: 6561422
    Abstract: A system and a method for converting markings made on media with a marking agent into a digital form representing the markings. The system of the present invention includes a marking device and an illumination digital scanning device. The marking device can be a manual or machine marking device, each containing the marking agent. The marking agent is dispensed by the marking device onto the media. The marking agent is a chemical that emits a certain radiation frequency set when illuminated by an illumination frequency set. The illumination digital scanning device converts the markings of the marking agent into a digital form. The method of the present invention includes marking the media with the marking agent, illuminating the markings to cause the marking agent to radiate at the radiation frequency set and converting the radiation into a digital form representing the markings.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: May 13, 2003
    Assignee: Hewlett-Packard Development Company
    Inventor: Alan E. Cariffe
  • Patent number: 6563935
    Abstract: According to a digital watermark information extracting method, pixel data located at predetermined positions on X-Y coordinate used when digital watermark information is embedded are extracted from image data, and the data value of the pixel data is compared with a reference value to judge whether the watermark information is embedded in the pixel data concerned. This processing is repetitively executed while a geometrical deformation is applied to the image data until it is confirmed that the information is embedded in the pixel data.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: May 13, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Isao Echizen, Hiroshi Yoshiura, Kousuke Anzai, Yutaka Kurosu
  • Publication number: 20030062419
    Abstract: The present invention relates to an optical reader that includes a color imaging assembly that generates color imaging data. An image analysis circuit determines if the acquired image should be characterized as a color photograph or as including a graphical symbol. A processing circuit processes the imaging data based on the image analysis circuit's determination of whether the image is a graphical symbol or a color photograph. The present invention allows a user to acquire and process both color images and graphical symbols, such as bar codes, text, OCR symbols or signatures. The optical reader of the present invention is also configured to associate an acquired image with at least one other acquired image.
    Type: Application
    Filed: July 13, 2001
    Publication date: April 3, 2003
    Applicant: Welch Allyn Data Collection, Inc.
    Inventors: Michael Ehrhart, Andrew Longacre
  • Publication number: 20030038180
    Abstract: A data carrier, such as a security card or bank card is disclosed having a stripe of machine readable markers formed on it. The markers (10, 12, 16, 18) are different colours, and more precisely, different spectra. By passing light through the markers and detecting the spectrum of a marker, information represented by different spectra can be decoded.
    Type: Application
    Filed: September 20, 2002
    Publication date: February 27, 2003
    Inventor: Peter Jeffrey Keay
  • Patent number: 6457651
    Abstract: A dual level encryption method, and document, for providing and obtaining a substantially increased amount of optically readable information from an otherwise conventional and highly visible printed bar code pattern area on a document without interfering with the conventional optical reading of the conventional information in the bar code, comprising integrally printing a second and very much finer pattern of encoded optically machine readable glyph code or other such indicia within the bar code pattern area, containing a much higher level of information, to provide two different levels of information within the same area. Scanning the bar code pattern with a conventional bar code reader extracts conventional bar coded information embedded in the bar code without interference from the second indicia. Scanning the same bar code pattern area with a different, higher resolution, optical scanner extracts the much greater amount of information from the second, much finer, optically readable indicia pattern.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: October 1, 2002
    Assignee: Xerox Corporation
    Inventors: Peter Paul, Grace T. Brewington
  • Patent number: 6384907
    Abstract: An optical target (1) including a positioning sub target (2) for determining position, and a plurality of identifying sub targets (3) for identifying one optical target (1) from another, each of which plurality of identifying sub targets (3) is a different color from the positioning sub target (2).
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: May 7, 2002
    Assignee: BAE Systems plc
    Inventor: Richard M Gooch
  • Patent number: 6375075
    Abstract: A symbol reader employs an optical element having first and second optical axes positioned to image a same portion of a color coded symbol onto two different portions of an image sensor. The reader includes one or more filters to remove different color portions of the light reflected from the symbol to create color separations at the image sensor. Thus, the image sensor detects different intensities of light, corresponding to different color states. A comparator, such as a microprocessor, programmed general purposed computer, or digital logic circuit, can determine the position and color of the various symbol elements based on image data produced by the image sensors, and decode the color coded symbol.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: April 23, 2002
    Assignee: Intermec IP Corp.
    Inventors: H. Sprague Ackley, Richard Steward Penn
  • Patent number: 6354502
    Abstract: A label for a component is provided with a continuous color tone background at least in segments of the label that can be detected as to a configuration using selected colored light sources which reflect from the different color tones of the label. A sensor can be used for discriminating between the reflection patterns from the light sources. A continuous color tone on the label changing smoothly from one color to others is applied to make a uniform shading from one color at one end of the label to another color at a second end, with various colors between the two ends. As an added feature, a number of black appearing strips forming a bar code can be provided on the label, with some of the strips reflecting infrared light and others not reflecting infrared light, so an infrared detector can be utilized for determining the pattern of the bar code for further identification of the labeled component. The bar code pattern will not be identifiable with the naked eye.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: March 12, 2002
    Assignee: Primera Technology, Inc.
    Inventors: Erick Hagstrom, Brent L. Nordus, Michael R. Tolrud, Robert T. Cummins, Kevin R Lilland, Matthew K. Dunham
  • Patent number: 6345765
    Abstract: An optical system, such as a bar code scanner, illuminates an image with a multi-wavelength device. Under a first embodiment, a tunable laser is optically coupled with a prism or other wavelength separation device. As the laser beam wavelength varies, the transmission path through the prism changes, resulting in a scanning of the beam across an image. A photodetector captures light reflected from the image and sends it to a microprocessor for decoding. Under another embodiment, a broad band light source transmits light through a prism, thus shining a “rainbow” on the image. A spectrometer measures reflected light as a function of wavelength and sends the resultant signal to a microprocessor for decoding. Neither embodiment relies on moving parts to scan the image.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: February 12, 2002
    Assignee: Intermec IP Corp.
    Inventor: Christopher A. Wiklof
  • Patent number: 6216952
    Abstract: A structure of a scanner includes a housing having a top provided with a glass window, a carriage mounted inside housing, the carriage including a a casing having a plurality of openings, a light source arranged within the casing for illuminating an object placed face down against the glass window above the carriage, and a plurality of mirrors fitted in the openings, whereby the scanner is compact in size and easy to assemble.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: April 17, 2001
    Assignee: DBTEL Incorporated
    Inventor: Michael Mou
  • Patent number: 6186403
    Abstract: A card, generally rectangular, for maintains a material in a fixed position is dimensioned to interact with the holding plate for use with a spectrophotometer. A pair of polygon windows within the card are aligned with the window of the holding plate which aligns with the window of the spectrophotometer. The card can be sealed to secure itself when folded and retain the material overlaying the window within the folded card. A fabric recess preferable encompasses one of the windows and a fabric adhesive, preferably releasable, maintains the fabric swatch in position. The fabric adhesive can be placed within the fabric recess or encompassing an opposing window. The cards are stored within a pocketed holder having pockets dimensioned to individually store multiple cards on a sheet. The holding plate is dimensioned to be received and affixed to a spectrophotometer. A slot, open at one end of the holding plate, retains the cards.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: February 13, 2001
    Inventors: Yalcin Ozbey, Jerry Sharpe, David Hillcoat
  • Patent number: 6119940
    Abstract: A card reader method for color cells. Calibration and indicia cells are provided.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: September 19, 2000
    Assignee: Unisys Corporation
    Inventor: Philip D. Klug
  • Patent number: 6112991
    Abstract: A card reader for color cells, calibration and indicia cells are provided.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: September 5, 2000
    Assignee: Unisys Corporation
    Inventor: Philip D. Klug
  • Patent number: 6108612
    Abstract: Disclosed is a method of finding a reference object within a coded object having a plurality of regions. Each region has a plurality of subregions, and at least a majority of a first one of the subregions has a different color from a second one of the subregions. The reference object has a known relative position to other objects within the coded object so that the reference object is utilizable to locate the other objects within the coded object. A first one of the subregions within a selected one of the regions within the coded object is selected. A first region and a second region within the coded object are also selected. The selected first and second region form a plurality of subregion pairs. Each subregion pair includes a subregion from the seleced first region and a subregion from the selected second region. Luminosity values of the subregions within each subregion pair are compared.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: August 22, 2000
    Assignee: Interval Research Corporation
    Inventors: Marcos R. Vescovi, Michele M. Covell, Philippe P. Piernot, Malcolm G. Slaney, Steven E. Saunders
  • Patent number: 6089455
    Abstract: A code printing and recognition system for printing, reading, and decoding a code on an article while the article is rotated and conveyed along a predetermined path. The system includes a code printing unit for printing a code in a printing area of the article. The code printed on the article consists of a plurality of code signs, while the printing area is a portion of a circle having a predetermined radius and centered at the central point of the bottom surface portion or the top surface portion of the article. The printing area is divided into a plurality of concentric-circular portions, so that each code sign is encoded by placing a number of dots in a respective circular portion. The system also includes an image pickup unit for acquiring an image of the printing area of the article and a code recognition unit for detecting dots in each circular portion, counting the detected dots in each circular portion, and decoding each code sign on a basis of the dot count in a respective circular portion.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: July 18, 2000
    Assignee: Scan Technology Co., Ltd.
    Inventor: Kiyoshi Yagita
  • Patent number: 6070805
    Abstract: A color barcode symbology is disclosed that can be accurately decoded despite severe distortions, misreads or altered symbols. This disclosed barcode is a color transition barcode having linear growth properties designed to resist the single or combined effects of: scaling distortions, perspective distortions, shear distortions, and wave distortions of both the uniform and non-uniform type distributed across the barcode's vertical or horizontal axis. This color barcode symbology is also resistant to missing symbols and altered symbols while offering, high security, error checking, and double error correcting capability.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: June 6, 2000
    Assignee: Zebra Technologies Corporation
    Inventors: Jeffrey R. Kaufman, Clive Hohberger
  • Patent number: 6050489
    Abstract: A bar code is provided on a Brownie film roll by printing black bar elements on a high-reflective obverse surface of an adhesive tape that secures a leading end of a filmstrip to a light-shielding paper. Spacings between the black bar elements form white bar elements. A reflective photo sensor scans the bar code while the light-shielding paper and the filmstrip are advanced in a camera. Signal level of the photo sensor is sampled, and at least one maximum value and one minimum value of the signal level are held. The sampled signal level is compared to threshold values to detect a leading edge of the adhesive tape, a leading edge of a first black bar element and borders between the bar elements. The threshold values for detecting the leading edge of the first black bar element and for detecting borders between the bar elements are seriatim revised according to the held maximum and minimum values.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: April 18, 2000
    Assignees: Fuji Photo Film Co., Ltd., Fuji Photo Optical Co., Ltd.
    Inventors: Shigenori Goto, Teruyoshi Makino, Hisashi Hamada, Tokuji Sato
  • Patent number: 6042013
    Abstract: An illuminator apparatus for a scanner device includes a support structure that extends along the longitudinal axis and an array of light emitting elements that are disposed on and supported by the support structure. The array of light emitting elements are arranged on the support structure in at least three longitudinal rows. The at least three rows of light emitting elements are associated with a respective one of blue, green and red colored light emitting elements. A color image sensor apparatus for a scanner device capable of scanning a multi-colored document and a method for illuminating a colored document being scanned in a scanning device are also described.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: March 28, 2000
    Assignee: Xerox Corporation
    Inventor: David Kirtland Fork
  • Patent number: 5992748
    Abstract: An apparatus for preparing a two-dimensional color code includes a reading section for reading an original image object to output to processing device; processing means having a code conversion section to output two-dimensional color codes corresponding to gradations of shades of color separately of CMY colors in original image data of one pixel read; and a printing section for printing on a printing sheet. An apparatus for restoring a two-dimensional color code reads the two-dimensional color code at the reading section to output the gradations of shades of color separately of CMY colors. The printing section prints restored image data on a printing body on the basis of the gradations of shades of color.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: November 30, 1999
    Assignee: Riso Kagaku Corporation
    Inventors: Junji Takahashi, Hiroyuki Ikeda
  • Patent number: 5949055
    Abstract: An acquired (e.g., scanned) image contains an imperceptible periodic signal component (e.g., a sinusoid), decoding of which can be used to automatically determine a linear geometric relationship between the acquired image and the original image in which the signal was embedded, without having the original image available during the decoding process. This known geometric relationship allows for linear geometric properties of the acquired image, such as alignment and scaling, to be automatically matched with those of the original image so that the acquired image may be automatically oriented and scaled to the size of the original image. The embedded periodic signals produce a distinct pattern of local peak power concentrations in a spatial frequency amplitude spectrum of the acquired image.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: September 7, 1999
    Assignee: Xerox Corporation
    Inventors: David J. Fleet, David J. Heeger, Todd A. Cass, David L. Hecht
  • Patent number: 5877487
    Abstract: A data symbol reading device is provided with a white light source, a single-color LED light source, and mode selection switches. The reading device is controlled to have a symbol reading mode, a color image scanning mode, and a monochrome image scanning mode based on the position of the selection switches. The reading device transmits data as appropriate to a host computer. Alternatively, the symbol reading device is provided with red, green, and blue single-color light sources, and has the same modes. Further, the symbol reading device may be provided with a three or four color filter wheel and a white light source to generate the color and monochrome images.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: March 2, 1999
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Nobuhiro Tani, Makoto Nukui, Takeharu Shin, Yukihiro Ishizuka, Shuzo Seo
  • Patent number: 5818032
    Abstract: Apparatus and method for storing large amount of digital data into the color halftone micro-dots generated by high resolution color laser or ink jet printers or lithography on a substrate, such as paper. A data cell composed of color halftone micro-dots is encoded with multi-bit digital binary data. The size of the data cell is determined by the resolution of the color printer and the color scanner, the density of the cyan, yellow, magenta and black inks and the reflectance of the red, green and blue lights, in order to meet the requirement of decoding the multi-bit binary data with enough noise immunity. Collections of data cells in a two-dimensional matrix forms a data block. The data block is enclosed with an exterior data cell border with pre-determined data pattern and is used to determine the spacing of the data cell, the orientation of the data block and reflectance of the data cells during scanning and data reconstruction.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: October 6, 1998
    Inventors: Tsu-Hung Tom Sun, Savina Yu-Sheng Wu
  • Patent number: 5804805
    Abstract: An optical indicia reader for reading information encoded in optical indicia is disclosed. In one embodiment of the invention, the optical indicia reader comprises a light source positioned within the indicia reader to illuminate an imaging area containing optical indicia, an oscillatory system for scanning a light beam over the optical indicia, and a controller for controlling the oscillatory system. The controller is capable of directing the oscillatory system to position the light beam in a fixed relationship to an aiming axis of the reader. The oscillatory system may be fixed in position when the optical indicia reader is in a proximity sensing mode.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: September 8, 1998
    Assignee: Norand Technology Corporation
    Inventors: Steven E. Koenck, Phillip Miller, George E. Hanson
  • Patent number: 5714745
    Abstract: A portable data collection device includes an imaging assembly including a two dimensional (2D) photosensor array overlied by a RGB color filter. The imaging assembly is selectively actuatable with a first trigger for reading a dataform in the imaging assembly's target area and actuatable with a second trigger for capturing a color image of the target area. The imaging assembly includes compensation circuitry to compensate for illumination transmittivity differences between the red, green and blue colors of the color filter. The compensation circuitry is invoked when the imaging assembly is actuated to read a bar code dataform. The imaging assembly further includes compression circuitry for compressing digital data representative of the target area when the imaging assembly is actuated to capture a color image of the target area.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: February 3, 1998
    Assignee: Metanetics Corporation
    Inventors: Paul B. Ju, Ynjiun P. Wang
  • Patent number: 5684885
    Abstract: Binary digital data is rendered on a surface, such as a sheet of paper, by printing a series of color patches on the sheet, with the 1 bits rendered as color patches of a first color and the 0 bits rendered as color patches of the second color. The color patches are arranged in a predetermined order along an axis on the surface. The second color relates to the first color by a fixed relationship in color space, whereby the absolute values of the first and second colors are immaterial to a detecting apparatus. The color patches can be intermixed with areas of a third color, the third color representing an average in color space of the first color and the second color.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: November 4, 1997
    Assignee: Xerox Corporation
    Inventors: Todd A. Cass, David H. Marimont
  • Patent number: 5619029
    Abstract: The present invention relates to a method and an apparatus for enhancing the optical image of information-containing symbols captured off highly reflective surfaces using a conventional optical touch camera. The method involves positioning the imaging assembly of the touch camera atop an information-containing coded symbol located on a component surface, positioning a diffuser element between the coded symbol and the imaging assembly, and moving the diffuser element into juxtaposition with the coded symbol before imaging the coded element.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: April 8, 1997
    Assignee: Rockwell International Corporation
    Inventors: Donald L. Roxby, Lisa M. Johnson
  • Patent number: 5576528
    Abstract: A method and apparatus for increasing the information density of a bar code symbol by generating multiple constituent bar code symbols, wherein each one is formed in a different color selected from a group of various primary colors, and overlaying each differently colored symbol on top of each other, thus forming an aggregate bar code symbol of various colors. In areas where the differently colored bars overlap each other, colors distinct from those in the original group of colors are formed. The aggregate bar code symbol is scanned by a solid state imaging device, and the scanned image is resolved by image processing techniques into the three constituent bar code symbols of the various colors. Each bar code symbol is then individually processed and decoded in accordance with the particular symbology used to encode the constituent bar code symbols.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: November 19, 1996
    Assignee: Symbol Technologies, Inc.
    Inventors: Steven M. Chew, Sundeep Kumar, Michael O'Haire
  • Patent number: 5525798
    Abstract: Inks have been discovered that are selectively excitable by different wavelengths of incident radiation. This allows a lower layer bar code to be written on an object with an invisible ink and an upper layer bar code to be written over the lower layer bar code with an ink that is invisible to the naked eye. The apparatus of this invention is a detector that is able to read the upper and lower layer bar codes.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: June 11, 1996
    Assignee: Pitney Bowes Inc.
    Inventors: William Berson, Judith D. Auslander
  • Patent number: 5471043
    Abstract: An optical assembly and electronic reader circuit cooperate to provide a highly-efficient and low-cost electro-optic barcode reader. The optical assembly includes a shielded housing, a photo detector and optical elements disposed about an un-folded optical path that provide a virtual reading window at one end of the housing whose field of view, which is focused to a point at the photo detector, is shaped to be no wider than constitutive barcode indicia. The electronic reader circuit includes a pulse amplifier and manual-adjustment-free average D.C. offset negative feedback and A.C. information peak detect negative feedback loops that respectively maintain the electrical pulse stream input to the pulse amplifier within the dynamic range thereof and eliminate electrical pulse stream peak noise. A circuit is coupled to a comparator with hysteresis square-up stage to deactivate the comparator in the state of no input signal.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: November 28, 1995
    Assignee: Kronos Incorporated
    Inventors: Herbert C. Knapp, Vance A. Parker, Larry K. Baxter, Jon F. Evans