Patents by Inventor Nadav BARKAI

Nadav BARKAI 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).

  • System and method for position calibration of a spot of an optical sensor
    Patent number: 9124754
    Abstract: A method for position calibration of a spot of a known geometry of an optical sensor is disclosed. The method may include providing a position calibration patch on a sheet at a position which is known with respect to a reference position on the sheet, along a scan path of the spot of the optical sensor across the sheet. The patch may include at least two adjacent blocks of different colors. The method may also include obtaining a sampling of the position calibration patch using the optical sensor. The method may further include determining from the sampling a relative coverage of the spot over the color blocks of the position calibration patch, and based on the known geometry of the spot and on the determined relative coverage, determining the position of the spot of the sensor with respect to the reference position.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: September 1, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Nadav Barkai, Lior Katz, Gal Amit
  • Position calibration of a spot of an optical sensor
    Patent number: 8736905
    Abstract: A method for position calibration of a spot of an optical sensor may include providing a position calibration patch on a sheet at a predetermined position, along a scan path of the spot across the sheet, the patch comprising at least two adjacent blocks of different colors. The method may also include obtaining a single sample of the position calibration patch using the optical sensor. The method may further include determining from the single sample the position of the spot of the sensor with respect to the position calibration patch.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 27, 2014
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Nadav Barkai, Gal Amit, Lior Katz
  • SYSTEM AND METHOD FOR POSITION CALIBRATION OF A SPOT OF AN OPTICAL SENSOR
    Publication number: 20140092402
    Abstract: A method for position calibration of a spot of a known geometry of an optical sensor is disclosed. The method may include providing a position calibration patch on a sheet at a position which is known with respect to a reference position on the sheet, along a scan path of the spot of the optical sensor across the sheet. The patch may include at least two adjacent blocks of different colors. The method may also include obtaining a sampling of the position calibration patch using the optical sensor. The method may further include determining from the sampling a relative coverage of the spot over the color blocks of the position calibration patch, and based on the known geometry of the spot and on the determined relative coverage, determining the position of the spot of the sensor with respect to the reference position.
    Type: Application
    Filed: June 8, 2011
    Publication date: April 3, 2014
    Inventors: Nadav Barkai, Lior Katz, Gal Amit
  • POSITION CALIBRATION OF A SPOT OF AN OPTICAL SENSOR
    Publication number: 20120314232
    Abstract: A method for position calibration of a spot of an optical sensor may include providing a position calibration patch on a sheet at a predetermined position, along a scan path of the spot across the sheet, the patch comprising at least two adjacent blocks of different colors. The method may also include obtaining a single sample of the position calibration patch using the optical sensor. The method may further include determining from the single sample the position of the spot of the sensor with respect to the position calibration patch.
    Type: Application
    Filed: December 15, 2011
    Publication date: December 13, 2012
    Inventors: Nadav BARKAI, Gal Amit, Lior Katz