Patents by Inventor Thomas Mazz
Thomas Mazz 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: 7665852Abstract: Red, blue and green lasers respectively emit a plurality of red, blue and green laser beams having respective output powers. The beams are optically focused and collinearly arranged to form a composite beam which is swept by a pair of scan mirrors in a pattern of scan lines on a projection surface, each scan line having a number of pixels. A controller causes selected pixels to be illuminated, and rendered visible, by the composite beam to produce an image. A safety circuit detects a malfunction of at least one of the lasers and the scan mirrors, and deenergizes the at least one of the lasers and the scan mirrors upon detection of the malfunction.Type: GrantFiled: June 5, 2006Date of Patent: February 23, 2010Assignee: Symbol Technologies, Inc.Inventors: Dmitriy Yavid, Miklos Stern, Thomas Mazz, Costanzo Difazio, Chinh Tan, Carl Wittenberg, Daniel Gonzalez
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Publication number: 20080308639Abstract: A bar code scanning device, system and method that utilizes one or more vertical cavity surface emitting laser diodes for producing at least one laser beam, where the vertical cavity surface emitting laser diodes are disposed on a substrate, and wherein the produced laser beam is substantially an essential single spatial mode laser beam. The bar code scanning device, system and method of present invention also comprise a photodiode attached to the substrate and arranged to receive at least a portion of the beam of light reflected off the scanned bar code or symbol.Type: ApplicationFiled: August 7, 2008Publication date: December 18, 2008Inventors: Miklos Stern, Chinh Tan, Yajun Li, Howard Shepard, Thomas Mazz, Eric Barkan, Vikram Bhargava, Andrew Fusco, Mark Weitzner
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Patent number: 7428995Abstract: A bar code scanning device, system and method that utilizes one or more vertical cavity surface emitting laser diodes for producing at least one laser beam, where the vertical cavity surface emitting laser diodes are disposed on a substrate, and wherein the produced laser beam is substantially an essential single spatial mode laser beam. The bar code scanning device, system and method of present invention also comprise a photodiode attached to the substrate and arranged to receive at least a portion of the beam of light reflected off the scanned bar code or symbol.Type: GrantFiled: February 5, 2001Date of Patent: September 30, 2008Assignee: Symbol Technologies, Inc.Inventors: Miklos Stern, Chinh Tan, Yajun Li, Howard Shepard, Thomas Mazz, Eric Barkan, Vikram Bhargava, Andrew Fusco, Mark Weitzner
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Patent number: 7367682Abstract: A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality in color.Type: GrantFiled: January 26, 2005Date of Patent: May 6, 2008Assignee: Symbol Technologies, Inc.Inventors: Paul Dvorkis, Ron Goldman, Chinh Tan, Dmitriy Yavid, Miklos Stern, Carl Wittenberg, Frederick F. Wood, Askold Strat, Michael Slutsky, Narayan Nambudiri, Richard Rizza, Thomas Mazz, Lisa Fan
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Publication number: 20070285625Abstract: Red, blue and green lasers respectively emit a plurality of red, blue and green laser beams having respective output powers. The beams are optically focused and collinearly arranged to form a composite beam which is swept by a pair of scan mirrors in a pattern of scan lines on a projection surface, each scan line having a number of pixels. A controller causes selected pixels to be illuminated, and rendered visible, by the composite beam to produce an image. A safety circuit detects a malfunction of at least one of the lasers and the scan mirrors, and deenergizes the at least one of the lasers and the scan mirrors upon detection of the malfunction.Type: ApplicationFiled: June 5, 2006Publication date: December 13, 2007Inventors: Dmitriy Yavid, Miklos Stern, Thomas Mazz, Costanzo Difazio, Chinh Tan, Carl Wittenberg, Daniel Gonzalez
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Patent number: 7227294Abstract: A piezoelectric transducer is driven to mechanically oscillate a mirror at a mechanical resonant frequency with high precision despite frequency variations introduced by temperature, tolerances and ageing of components. Switches are actuated at different times in order to make the drive frequency correspond to the mechanical resonant frequency.Type: GrantFiled: April 29, 2005Date of Patent: June 5, 2007Assignee: Symbol Technologies, Inc.Inventors: Thomas Mazz, Dmitriy Yavid, Frederick F. Wood
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Publication number: 20060244339Abstract: A piezoelectric transducer is driven to mechanically oscillate a mirror at a mechanical resonant frequency with high precision despite frequency variations introduced by temperature, tolerances and ageing of components.Type: ApplicationFiled: April 29, 2005Publication date: November 2, 2006Inventors: Thomas Mazz, Dmitriy Yavid, Frederick Wood
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Publication number: 20060119804Abstract: A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality in color.Type: ApplicationFiled: January 26, 2005Publication date: June 8, 2006Inventors: Paul Dvorkis, Ron Goldman, Chinh Tan, Dmitriy Yavid, Miklos Stern, Carl Wittenberg, Frederick Wood, Askold Strat, Michael Slutsky, Narayan Nambudiri, Richard Rizza, Thomas Mazz, Lisa Fan
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Patent number: 6732935Abstract: A unitary body of optical material and associated methods for reading indicia such as bar codes is provided. The unitary body can focus light from a light source into a beam, redirect light reflected from a target to a photodetector, and provide mechanical support for a light source, printed circuit board, or other indicia reader components. In comparison to conventional apparatus, the unitary body requires a reduced number of components and is therefore easier and less expensive to manufacture and assemble. The unitary design increases reliability and performance consistency while decreasing sensitivity to thermal and mechanical loading. Moreover, the unitary body reduces the overall tolerance budget of a reader and therefore facilitates mass production of optical apparatus and readers. The unitary body and associated methods may be implemented in a compact reader with the aforementioned advantages in the form of a pen, or can be integrated into an antenna of a wireless device, such as a cell phone or a PDA.Type: GrantFiled: March 15, 2001Date of Patent: May 11, 2004Assignee: Symbol Technologies, Inc.Inventors: Igor R. Vinogradov, Alex Breytman, Mark Krichever, David Tsi, Vladimir Gurevich, Richard Migliaccio, Paul Dvorkis, Jay Paul White, Thomas Mazz, Howard Shepard, Simon Bard, Jerome Swartz
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Patent number: 6685092Abstract: Molded imager optical packages are disclosed which are particularly adapted for use in miniaturized, linear sensor-based code reading engines. The package may include a one-dimensional solid state photo sensor with a small number of cells. A low F-number optical system may be integrally molded in the sensor packaging.Type: GrantFiled: June 15, 2001Date of Patent: February 3, 2004Assignee: Symbol Technologies, Inc.Inventors: Mehul Patel, Thomas D. Bianculli, Thomas Mazz, Bradley S. Carlson
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Publication number: 20030024986Abstract: Molded imager optical packages are disclosed which are particularly adapted for use in miniaturized, linear sensor-based code reading engines. The package may include a one-dimensional solid state photo sensor with a small number of cells. A low F-number optical system may be integrally molded in the sensor packaging.Type: ApplicationFiled: June 15, 2001Publication date: February 6, 2003Inventors: Thomas Mazz, Bradley S. Carlson
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Publication number: 20020130183Abstract: A unitary body of optical material and associated methods for reading indicia such as bar codes is provided. The unitary body can focus light from a light source into a beam, redirect light reflected from a target to a photodetector, and provide mechanical support for a light source, printed circuit board, or other indicia reader components. In comparison to conventional apparatus, the unitary body requires a reduced number of components and is therefore easier and less expensive to manufacture and assemble. The unitary design increases reliability and performance consistency while decreasing sensitivity to thermal and mechanical loading. Moreover, the unitary body reduces the overall tolerance budget of a reader and therefore facilitates mass production of optical apparatus and readers. The unitary body and associated methods may be implemented in a compact reader with the aforementioned advantages in the form of a pen, or can be integrated into an antenna of a wireless device, such as a cell phone or a PDA.Type: ApplicationFiled: March 15, 2001Publication date: September 19, 2002Inventors: Igor R. Vinogradov, Alex Breytman, Mark Krichever, David Tsi, Vladimir Gurevich, Richard A. Migliaccio, Paul Dvorkis, Jay Paul White, Thomas Mazz, Howard Shepard, Simon Bard, Jerome Swartz
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Patent number: 6206290Abstract: A miniature light beam scanner includes a moving optical element formed on a substrate with electrodes for driving the optical element and sensing its motion as indicated by a varying capacitance between the optical element and the substrate. Control and driver circuitry responsive to the variation in capacitance drives the optical element to move at a resonant frequency and predetermined amplitude.Type: GrantFiled: March 6, 1998Date of Patent: March 27, 2001Assignee: Symbol Technologies, Inc.Inventors: James Giebel, Thomas Mazz, Constanzo DiFazio, Mik Stern, David Goren
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Patent number: 6059188Abstract: An integrated optical module for an optical scanner has a lens spaced from a vertical-cavity surface-emitting laser (VCSEL) by a spacer of defined dimensions. The module, in an alternative embodiment, includes a wafer frame, a suspended mirror mounted for oscillation on the frame, a wafer substrate bonded beneath the frame and a wafer cover bonded above the frame. The cover includes a mirror travel stop to protect the mirror against shocks. A VCSEL mounted to the wafer cover produces a beam which is shaped and deflected by a diffractive optical element onto the oscillating mirror. The reflected beam passes out of the module toward an indicia to be read. Large numbers of such devices may be fabricated relatively cheaply using wafer-scale processing and assembly technology. Three large wafers are fabricated corresponding respectively to arrays of substrates, frames and covers. The large wafers are bonded together in a sandwich arrangement, and are then diced to produce the individual scan modules.Type: GrantFiled: April 12, 1996Date of Patent: May 9, 2000Assignee: Symbol TechnologiesInventors: Costanz.o slashed. diFazio, Thomas Mazz, Chinh Tan, Miklos Stern, Henry Grossfeld, Paul Dvorkis, Peter Fazekas, Yajun Li, Joseph Katz, Askold Strat, Greg Martino
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Patent number: 5945658Abstract: A combined range laser scanner and method for electro-optically reading indicia such as bar codes having parts of different light reflectivity which utilizes two laser diode optical illumination systems optimally focused for different working ranges. A first laser illumination system is optimized for contact operation and has a range extending to approximately two feet. The second laser illumination system is optimized for longer range scanning from approximately two to seventeen feet, and the two laser scanning systems are integrated into one combined range laser scanner. The combined range laser scanner incorporates therein logic circuitry which enables either laser illumination system as required for the particular scanning application. Depending upon which laser illumination system is selected, the laser spot speed (e.g. amplitude of the drive signal for the scanning motor) is controlled to limit the frequency of received light signals to that of standard signal processing and decoding circuits.Type: GrantFiled: November 7, 1997Date of Patent: August 31, 1999Assignee: Symbol Technologies, Inc.Inventors: Patrick Salatto, Jr., Thomas Mazz
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Patent number: 5723851Abstract: A combined range laser scanner and method for electro-optically reading indicia such as bar codes having parts of different light reflectivity which utilizes two laser diode optical illumination systems optimally focused for different working ranges. A first laser illumination system is optimized for contact operation and has a range extending to approximately two feet. The second laser illumination system is optimized for longer range scanning from approximately two to seventeen feet, and the two laser scanning systems are integrated into one combined range laser scanner. The combined range laser scanner incorporates therein logic circuitry which enables either laser illumination system as required fro the particular scanning application. Depending upon which laser illumination system is selected, the laser spot speed (e.g. amplitude of the drive signal for the scanning motor) is controlled to limit the frequency of received light signals to that of standard signal processing and decoding circuits.Type: GrantFiled: May 30, 1995Date of Patent: March 3, 1998Assignee: Symbol Technologies, Inc.Inventors: Patrick Salatto, Jr., Thomas Mazz
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Patent number: 5506392Abstract: A bar code reader capable of working over a wider range of working angle and for a wider range of bar code densities, using improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived from the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result. The different resolution of the two channels can be provided using different size photodetection areas, e.g., small and large groups of active areas on a sensor array.Type: GrantFiled: September 28, 1994Date of Patent: April 9, 1996Assignee: Symbol Technologies, Inc.Inventors: Edward Barkan, David P. Goren, Joseph Katz, Yajun Li, Jerome Swartz, Thomas Mazz
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Patent number: 5420411Abstract: A combined range laser scanner and method for electro-optically reading indicia such as bar codes having parts of different light reflectivity which utilizes two laser diode optical illumination systems optimally focused for different working ranges. A first laser illumination system is optimized for contact operation and has a range extending to approximately two feet. The second laser illumination system is optimized for longer range scanning from approximately two to seventeen feet, and the two laser scanning systems are integrated into one combined range laser scanner. The combined range laser scanner incorporates therein logic circuitry which enables either laser illumination system as required from the particular scanning application. Depending upon which laser illumination system is selected, the laser spot speed (e.g. amplitude of the drive signal for the scanning motor) is controlled to limit the frequency of received light signals to that of standard signal processing and decoding circuits.Type: GrantFiled: July 29, 1993Date of Patent: May 30, 1995Assignee: Symbol Technologies, Inc.Inventors: Patrick Salatto, Jr., Thomas Mazz
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Patent number: 5352922Abstract: The method and apparatus of this invention facilitate operation of a bar code reader over a wider range of working angle and for a wider range of bar code densities. The invention includes improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived form the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result.Type: GrantFiled: August 19, 1993Date of Patent: October 4, 1994Assignee: Symbol Technologies, Inc.Inventors: Edward Barkan, David P. Goren, Joseph Katz, Yajun Li, Jerome Swartz, Thomas Mazz
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Patent number: 5278397Abstract: The method and apparatus of this invention facilitate operation of a bar code reader over a wider range of working angle and for a wider range of bar code densities. The invention includes improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived form the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result.Type: GrantFiled: July 25, 1991Date of Patent: January 11, 1994Assignee: Symbol Technologies, Inc.Inventors: Edward Barkan, David P. Goren, Joseph Katz, Yajun Li, Jerome Swartz, Thomas Mazz