Patents by Inventor Miroslav Trajkovic

Miroslav Trajkovic 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).

  • Patent number: 7963444
    Abstract: An operator is guided to move an imaging reader to an optimum reading position in which to read a symbol by image capture. Optimum image capture occurs substantially at an imaging plane of an imaging assembly, and the operator is visually guided so that the symbol is located substantially at the imaging plane in a working range of distances.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: June 21, 2011
    Assignee: Symbol Technologies, Inc.
    Inventors: Dorothy McCormick, Miroslav Trajkovic, Igor Vinogradov
  • Publication number: 20110101099
    Abstract: A method, system, and apparatus for monitoring an exit window of a scanner using a plurality of imaging devices. The method includes capturing a first image through the exit window using a first imaging device, capturing a second image through the exit window using a second different imaging device, and detecting at least one of a plurality of features in both the first and second images. The method further includes matching the plurality of features detected in both the first and the second images, determining whether the at least one matched feature is present on the plane of the exit window, and monitoring a physical condition of the exit window based on the at least one feature.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 5, 2011
    Inventors: Miroslav Trajkovic, Jade Zhang
  • Publication number: 20110073657
    Abstract: A method and apparatus for detecting a barcode like region contained in a target object. The method includes capturing an image of the target object, calculating a total confidence value for the captured image, and determining a presence of a barcode in the captured image based on the total confidence value, wherein the total confidence value is calculated as a function of at least one of a first, second, and third confidence values. The method of calculating the confidence values includes calculating the first confidence value based on a vertical projection signal of the barcode like region in the captured image, the second confidence value based on a horizontal projection signal of the barcode like region in the captured image, and the third confidence value based on a start and stop pattern of the barcode like region in the captured image.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Inventors: Miroslav Trajkovic, Dariusz Madej
  • Publication number: 20110049242
    Abstract: A method and apparatus for estimating an optimized exposure time for an imaging-based barcode scanner. The method includes (1) determining a SNR decodability function that enables a decodability value be determined from a signal-to-noise ratio; (2) determining a blur decodability function that enables a decodability value be determined from a blur value; (3) measuring a blur and a signal-to-noise ratio for an image captured with a first exposure time; and (4) determining an optimized exposure time based on the measured blur, the measured signal-to-noise ratio, and a combined decodability function that depends upon both the SNR decodability function and the blur decodability function.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 3, 2011
    Inventors: Igor VINOGRADOV, Adithya Krishnamurthy, Miroslav Trajkovic
  • Patent number: 7778444
    Abstract: An image processing system (250) and method (300) are disclosed for correcting a head pose in a video phone image, so that a frontal view is presented on a display. A disclosed head pose corrector (250) estimates the orientation of a head pose and adjusts the orientation of the head pose, if necessary, to present a frontal view. The orientation of the head pose is adjusted by generating a three dimensional model of the face surface and adjusting the orientation of the three dimensional face model to provide the desired frontal view. The head pose corrector (250) may be included in a video phone (100) to correct the head pose of transmitted or received images (or both) or may be included in a server on a network to automatically adjust the head shots of one or more participants to a video phone communication.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: August 17, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Mi-Suen Lee, Yun-Ting Lin, Miroslav Trajkovic, Vasanth Philomin
  • Publication number: 20100163625
    Abstract: An arrangement for, and a method of, minimizing misdecodes of GS1 DataBar Limited (Databar-limited) symbols in a reader for electro-optically reading symbols of different symbologies, such as Universal Product Code (UPC) Version A (UPC-A) symbols, includes a data capture assembly for capturing light from a target symbol, and for generating an electrical signal indicative of the captured light; and a controller for processing and decoding the electrical signal, and for determining whether the decoded signal is indicative of a Databar-limited symbol, and for determining whether the decoded signal has characteristics indicative of a different symbology, such as the UPC-A symbol, to indicate whether a misdecode of the Databar-limited symbol has occurred.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Inventors: Dariusz J. Madej, Joseph Cai, Duanfeng He, Miroslav Trajkovic, Dayou Wang, Michelle Wang
  • Publication number: 20100130266
    Abstract: A device includes a memory, a wireless transceiver and a positioning system. The memory stores a first area in which a wireless network lacks coverage. The wireless transceiver is adapted to communicate with the wireless network. The positioning system determines a position of the device to determine whether the device is located within the first area. The wireless transceiver does not attempt to communicate with the wireless network if the positioning system determines that the device is located within the first area.
    Type: Application
    Filed: November 25, 2008
    Publication date: May 27, 2010
    Inventors: Miroslav Trajkovic, Thomas K. Roslak
  • Publication number: 20100078481
    Abstract: An image capture system for, and a method of, reading an optical code during a reading mode, comprise an aiming assembly including a laser for emitting a laser beam having a variable intensity, and for generating an aiming pattern from the laser beam during an aiming mode prior to the reading mode, and an imager for detecting and capturing an image of the aiming pattern and the code over a field of view by exposure over an exposure time period during the aiming mode, and for detecting and capturing an image of the code over the field of view during the reading mode. A controller is operative for controlling the intensity of the laser beam during the aiming mode by increasing the intensity of the laser beam during the exposure time period to enhance detection and capture of the aiming pattern by the imager, and by decreasing the intensity of the laser beam frame outside the exposure time period for user safety.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 1, 2010
    Inventors: Miroslav Trajkovic, Vladimir Gurevich, Heng Zhang
  • Patent number: 7686223
    Abstract: An aiming pattern assembly (60) for an imaging-based bar code reader (10) including: a light source assembly (62) generating focused light; a pattern shaping assembly (66) receiving focused light from the light source assembly (62) and including a first area (66a) and a non-overlapping second area (66b), focused light passing through the first area (66a) creating a first aiming pattern (P1) projected toward a field of view (FV) and passing through the second area (66b) creating a second aiming pattern (P2) projected toward the field of view (FV); and a pattern selection assembly (68) receiving the first and second aiming patterns (P1, P2) and passing at least one of the first and second aiming patterns (P1, P2).
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: March 30, 2010
    Assignee: Symbol Technologies, Inc.
    Inventors: Igor Vinogradov, Miroslav Trajkovic
  • Publication number: 20100019041
    Abstract: An operator is guided to move an imaging reader to an optimum reading position in which to read a symbol by image capture. Optimum image capture occurs substantially at an imaging plane of an imaging assembly, and the operator is visually guided so that the symbol is located substantially at the imaging plane in a working range of distances.
    Type: Application
    Filed: July 23, 2008
    Publication date: January 28, 2010
    Inventors: Dorothy McCormick, Miroslav Trajkovic, Igor Vinogradov
  • Patent number: 7650041
    Abstract: Described is a system and method for optical character recognition in an image. The method comprising identifying a connected component in an image, computing at least one parameter for the connected component and selecting a portion of the image corresponding to the connected component for optical character recognition when the at least one parameter is within a predetermined threshold range.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: January 19, 2010
    Assignee: Symbol Technologies, Inc.
    Inventors: Dariusz Madej, Miroslav Trajkovic
  • Publication number: 20090084851
    Abstract: An aiming light assembly supported by a mobile imaging reader projects an aiming light pattern on a symbol. A controller modulates the aiming light pattern to render the aiming light pattern more visibly discernible to an operator, especially in a brightly lit ambient environment, to enable the operator to position the aiming light pattern on the symbol prior to reading.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Inventors: Igor Vinogradov, Miroslav Trajkovic
  • Publication number: 20090057413
    Abstract: An aiming pattern assembly (60) for an imaging-based bar code reader (10) including: a light source assembly (62) generating focused light; a pattern shaping assembly (66) receiving focused light from the light source assembly (62) and including a first area (66a) and a non-overlapping second area (66b), focused light passing through the first area (66a) creating a first aiming pattern (P1) projected toward a field of view (FV) and passing through the second area (66b) creating a second aiming pattern (P2) projected toward the field of view (FV); and a pattern selection assembly (68) receiving the first and second aiming patterns (P1, P2) and passing at least one of the first and second aiming patterns (P1, P2).
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Applicant: Symbol Technologies, Inc.
    Inventors: Igor Vinogradov, Miroslav Trajkovic
  • Publication number: 20090057411
    Abstract: An imaging system for acquiring images of multiple indicia, such as symbols and non-symbols, on a target, such as a label, comprises a solid-state imager having an array of image sensors for capturing light from the indicia on the target over a field of view, and a controller having a stored template that identifies details of the indicia on the target, for controlling the imager to capture the light from the indicia based on the details identified by the template.
    Type: Application
    Filed: August 30, 2007
    Publication date: March 5, 2009
    Inventors: Dariusz J. Madej, Miroslav Trajkovic
  • Patent number: 7478753
    Abstract: A system and method for performing a read operation including acquiring a series of frames of image data; processing a first frame of image data including an array of pixel data acquired while an aiming pattern was generated for determining a location L of at least one pixel of the array of pixel data that corresponds to the aiming pattern; and processing a second frame of image data acquired while the aiming pattern was not generated. The processing of the second frame of image data includes the steps of selecting at least one optical code acquired in the second frame of image data that is located at a respective location; wherein the respective location meets a predetermined condition relative to the determined location L; and providing the selected at least one optical code for further processing in accordance with the read operation.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: January 20, 2009
    Assignee: Symbol Technologies, Inc.
    Inventors: Mehul Patel, Christopher Brock, Miroslav Trajkovic, Edward Hatton, William Sackett
  • Publication number: 20080122577
    Abstract: A system and method is provided for selectively activating biometric sensors (102, 104, 106) to authenticate the identity of an individual while conserving system resources. A biometric system has at least two tiers of sensors, first (102) and second tier sensors (104, 106), where the first tier sensors (102) are characteristically less sophisticated and less expensive to operate than the second tier sensors (104, 106). One or more of the second tier sensors (104, 106) are activated only after a user's biometric is successfully or unsuccessfully verified by one of the first tier sensors (102). Alternatively, the second tier sensors (104, 106) are activated in response to a user requesting a particular level of service or in response to an environmental condition. Alternatively, only those sensors are turned on which are compatible with a user's biometric profile.
    Type: Application
    Filed: May 6, 2004
    Publication date: May 29, 2008
    Inventors: Srinivas Gutta, Vasanth Philomin, Miroslav Trajkovic
  • Patent number: 7369680
    Abstract: A system and apparatus are disclosed for modeling patterns of behavior of humans or other animate objects and detecting a violation of a repetitive pattern of behavior. The behavior of one or more persons is observed over time and features of the behavior are recorded in a multi-dimensional space. Over time, the multi-dimensional data provides an indication of patterns of human behavior. Activities that are repetitive in terms of time, location and activity, such as sleeping and eating, would appear as a Gaussian distribution or cluster in the multi-dimensional data. Probability distribution functions can be analyzed using known Gaussian or clustering techniques to identify repetitive patterns of behavior and characteristics thereof, such as a mean and variance. Deviations from repetitive patterns of behavior can be detected and an alarm can be triggered, if appropriate.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: May 6, 2008
    Assignee: Koninklijke Phhilips Electronics N.V.
    Inventors: Miroslav Trajkovic, Mi-Suen Lee, Serhan Dagtas, Srinivas Gutta, Tomas Brodsky, Vasanth Philomin, Yun-Ting Lin, Hugo Strubbe
  • Patent number: 7364080
    Abstract: Described is a system and method for bar code detection. The method comprises generating a digitized bar pattern (DBP) including a series of elements corresponding to elements of a scanned bar code, and identifying a first set of margins around a first portion of the series of elements. When an attempt to decode the first portion is unsuccessful, the first portion is analyzed to determine a second set of margins around a second portion of the series of elements, the second set of margins being within the first set of margins, and the second portion is input to a decoding algorithm.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: April 29, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Dariusz Madej, Miroslav Trajkovic
  • Patent number: 7344080
    Abstract: An imaging-based bar code reader that includes an item guide to guide movement of an item including a target bar code such that target bar code passes through a field of view of the reader in a straight line. The reader further includes an imaging and decoding system to: 1) capture a series of images which include at least a part of the target bar code as the bar code is moved through the field of view of the reader; 2) sequentially analyze the series of captured images, for each captured image, identifying areas of the captured image representative of an image of the target bar code and decode decodable portions of the imaged target bar code; and 3) combining the decoded portions of the imaged target bar code using a sequence stitching method to obtain a full decode of the target bar code.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: March 18, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Igor R. Vinogradov, Miroslav Trajkovic, Edward Barkan
  • Publication number: 20080037842
    Abstract: A transaction card 10 for use in a transaction includes a memory 15 and pressure sensors 20. The authorized user provides biometric data, such as a signature, by signing on the pressure sensors (20) using a pointer for storage in the memory (15) when the card is used for the first time. The signature is not visible on the card for added security. At the point of use of the transaction card (10), such as the point of sale, the user signs on an input device (50) such as a digital tablet, a tablet with pressure sensors or a slip of paper. This newly acquired signature (55) is compared with the signature stored on the transaction card (10), such as by displaying the stored signature out of the view of the user and comparing displayed signature with the acquired signature (55). The comparison may be performed by the service-providing associate or by a processor coupled to the input device (50).
    Type: Application
    Filed: May 6, 2004
    Publication date: February 14, 2008
    Inventors: Srinivas Gutta, Miroslav Trajkovic, Vasanth Philomin