Patents by Inventor Matthew Blasczak
Matthew Blasczak 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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Patent number: 8733659Abstract: In an electro-optical reader, an aiming or a scanning laser has a laser chip and a monitor photodiode. Output power of a laser beam emitted by the laser is regulated by a feedback circuit for maintaining substantially constant the laser beam output power during normal operation, a disabling circuit for disabling the feedback circuit, a drive circuit for driving the chip with a drive current when the feedback circuit is disabled, and for concomitantly generating a photodiode output voltage, a current modification circuit for modifying the drive current by a predetermined current with a concomitant change in the photodiode output voltage when the feedback circuit is disabled, and a control circuit for monitoring the change in the photodiode output voltage, for determining whether the change in the photodiode output voltage is sufficient to indicate an over-power condition, and for interrupting power to the chip when the over-power condition is indicated.Type: GrantFiled: August 27, 2010Date of Patent: May 27, 2014Assignee: Symbol Technologies, Inc.Inventors: James Giebel, Matthew Blasczak, Peter Fazekas, Mark Weitzner
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Publication number: 20120048942Abstract: In an electro-optical reader, an aiming or a scanning laser has a laser chip and a monitor photodiode. Output power of a laser beam emitted by the laser is regulated by a feedback circuit for maintaining substantially constant the laser beam output power during normal operation, a disabling circuit for disabling the feedback circuit, a drive circuit for driving the chip with a drive current when the feedback circuit is disabled, and for concomitantly generating a photodiode output voltage, a current modification circuit for modifying the drive current by a predetermined current with a concomitant change in the photodiode output voltage when the feedback circuit is disabled, and a control circuit for monitoring the change in the photodiode output voltage, for determining whether the change in the photodiode output voltage is sufficient to indicate an over-power condition, and for interrupting power to the chip when the over-power condition is indicated.Type: ApplicationFiled: August 27, 2010Publication date: March 1, 2012Applicant: Symbol Technologies, Inc.Inventors: James GIEBEL, Matthew BLASCZAK, Peter FAZEKAS, Mark WEITZNER
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Patent number: 8083147Abstract: An arrangement for, and a method of, controlling image exposure in an imaging reader for reading symbols, employ an illuminating light assembly for illuminating a symbol with illumination light, a solid-state imager for capturing return light from the symbol over a field of view, and a controller for successively exposing the imager over a first exposure time period to capture the return light from, and to optimally image, a first area of the symbol, and over a second exposure time period to capture the return light from, and to optimally image, a second area of the symbol. The first and the second areas have different light intensity levels. The first and the second exposure time periods are different in duration. The controller is operative for combining the optimally imaged first and second areas to read the symbol.Type: GrantFiled: December 17, 2008Date of Patent: December 27, 2011Assignee: Symbol Technologies, Inc.Inventors: Wynn Aker, Matthew Blasczak
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Publication number: 20100147947Abstract: An arrangement for, and a method of, controlling image exposure in an imaging reader for reading symbols, employ an illuminating light assembly for illuminating a symbol with illumination light, a solid-state imager for capturing return light from the symbol over a field of view, and a controller for successively exposing the imager over a first exposure time period to capture the return light from, and to optimally image, a first area of the symbol, and over a second exposure time period to capture the return light from, and to optimally image, a second area of the symbol. The first and the second areas have different light intensity levels. The first and the second exposure time periods are different in duration. The controller is operative for combining the optimally imaged first and second areas to read the symbol.Type: ApplicationFiled: December 17, 2008Publication date: June 17, 2010Inventors: Wynn Aker, Matthew Blasczak
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Publication number: 20100074286Abstract: Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of an over-power condition not conforming to preestablished regulatory standards. In one embodiment, during an operational mode, a difference between laser drive currents at two operating points is compared to a difference between laser drive currents at the same two operating points during a calibration mode. The over-power condition is recognized when the difference during the operational mode exceeds the difference during the calibration mode by a predetermined amount. In another embodiment, the laser is only energized to emit the beam at a reduced power level well below regulatory standards for staring at even if a motor drive failed.Type: ApplicationFiled: September 17, 2009Publication date: March 25, 2010Inventors: Costanzo Difazio, Vladimir Gurevich, James Giebel, Gary G. Schneider, Matthew Blasczak, Mark A. Weitzner, Edward Barkan
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Patent number: 7609736Abstract: Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of an over-power condition not conforming to preestablished regulatory standards. In one embodiment, during an operational mode, a difference between laser drive currents at two operating points is compared to a difference between laser drive currents at the same two operating points during a calibration mode. The over-power condition is recognized when the difference during the operational mode exceeds the difference during the calibration mode by a predetermined amount. In another embodiment, the laser is only energized to emit the beam at a reduced power level well below regulatory standards for staring at even if a motor drive failed.Type: GrantFiled: September 30, 2005Date of Patent: October 27, 2009Assignee: Symbol Technologies, Inc.Inventors: Costanzo Difazio, Vladimir Gurevich, James Giebel, Gary G. Schneider, Matthew Blasczak, Mark A. Weitzner, Edward Barkan
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Publication number: 20090242641Abstract: A device having a housing, a hybrid engine disposed within the housing, the hybrid engine configured to include components to perform at least two functionalities and an interface circuitry disposed within the housing to connect the hybrid engine to a processor using a single connector. The hybrid engine having a first set of components to perform a first functionality, a second set of components to perform a second functionality and a single connector connecting the hybrid engine to an interface circuitry of a device, the connector one of transmitting and receiving data relating to the first and second functionalities to a processor of the device.Type: ApplicationFiled: March 31, 2008Publication date: October 1, 2009Inventor: Matthew BLASCZAK
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Patent number: 7296743Abstract: Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of operating conditions not conforming to preestablished standards, and adjust power to the laser to enhance reader performance without violating prevalent safety standards.Type: GrantFiled: July 23, 2004Date of Patent: November 20, 2007Assignee: Symbol Technologies, Inc.Inventors: James Giebel, Gary G. Schneider, Vladimir Gurevich, Mark A. Weitzner, Costanzo Difazio, Matthew Blasczak, Mark Anderson, Edward Barkan
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Patent number: 7267283Abstract: The operating condition of data capture systems, such as electro-optical readers, RFID readers, and imagers, is monitored and reported to a host which preferably modifies the operating condition when the latter is outside a preestablished setting.Type: GrantFiled: November 30, 2004Date of Patent: September 11, 2007Assignee: Symbol Technologies, Inc.Inventors: Gary G. Schneider, Matthew Blasczak, James Giebel, Edward Barkan, William Sackett, Costanzo Difazio
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Publication number: 20070133633Abstract: Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of an over-power condition not conforming to preestablished regulatory standards. In one embodiment, during an operational mode, a difference between laser drive currents at two operating points is compared to a difference between laser drive currents at the same two operating points during a calibration mode. The over-power condition is recognized when the difference during the operational mode exceeds the difference during the calibration mode by a predetermined amount. In another embodiment, the laser is only energized to emit the beam at a reduced power level well below regulatory standards for staring at even if a motor drive failed.Type: ApplicationFiled: September 30, 2005Publication date: June 14, 2007Inventors: Costanzo Difazio, Vladimir Gurevich, James Giebel, Gary Schneider, Matthew Blasczak, Mark Weitzner, Edward Barkan
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Publication number: 20060138209Abstract: The operating condition of data capture systems, such as electro-optical readers, RFID readers, and imagers, is monitored and reported to a host which preferably modifies the operating condition when the latter is outside a preestablished setting.Type: ApplicationFiled: November 30, 2004Publication date: June 29, 2006Inventors: Gary Schneider, Matthew Blasczak, James Giebel, Edward Barkan, William Sackett, Costanzo Difazio
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Publication number: 20060016891Abstract: Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of operating conditions not conforming to preestablished standards, and adjust power to the laser to enhance reader performance without violating prevalent safety standards.Type: ApplicationFiled: July 23, 2004Publication date: January 26, 2006Inventors: James Giebel, Gary Schneider, Vladimir Gurevich, Mark Weitzner, Costanzo Difazio, Matthew Blasczak, Mark Anderson, Edward Barkan
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Publication number: 20050236485Abstract: An intelligent gain selection circuit replaces the gain set by an automatic gain control circuit in an electro-optical reader for reading indicia, such as bar code symbols, with a larger gain where specular reflections, high contrast edges, or other noise operative to produce dominant high voltage peaks in an analog signal generated by a sensor in the reader, are detected.Type: ApplicationFiled: April 26, 2004Publication date: October 27, 2005Inventors: Dayou Wang, Matthew Blasczak, Edward Barkan, Vladimir Gurevich, Pierre Craen
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Patent number: 6651886Abstract: Holographic optical elements are configured and deployed in optical imagers and scanners to produce optical modification of output laser beams and light received and detected by the system. In some preferred embodiments electrically switchable holographic optical elements (ESHOEs) are employed for beam tilting, for varying spot size and shape for modifying system focal distance and field of view, for changing laser aiming patterns and/or for color imaging.Type: GrantFiled: April 13, 2001Date of Patent: November 25, 2003Assignee: Symbol Technologies, Inc.Inventors: Vladimir Gurevich, Mark Krichever, Igor R. Vinogradov, Matthew Blasczak, Thomas D. Bianculli, Shinji Nagano, Mehul Patel
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Publication number: 20020148900Abstract: Holographic optical elements are configured and deployed in optical imagers and scanners to produce optical modification of output laser beams and light received and detected by the system. In some preferred embodiments electrically switchable holographic optical elements (ESHOEs) are employed for beam tilting, for varying spot size and shape for modifying system focal distance and field of view, for changing laser aiming patterns and/or for color imaging.Type: ApplicationFiled: April 13, 2001Publication date: October 17, 2002Inventors: Vladimir Gurevich, Mark Krichever, Igor R. Vinogradov, Matthew Blasczak, Thomas D. Bianculli, Shinji Nagano, Mehul Patel