Symbol Technologies, LLC

Zebra Technologies Corporation

Matthew D Blasczak

Vladimir P Gurevich

Edward D Barkan

James R Giebel

Peter Fazekas

Gary G Schneider

Costanzo Difazio

Mark A Weitzner

Darran Michael Handshaw

David Tsi Shi

Thomas Lackemann

Dayou Wang

Michelle X Wang

Jason S Mak

Mark J Krichever

Igor R Vinogradov

Mehul M Patel

Thomas D Bianculli

William C Sackett

Matthew Lawrence Horner

Alan J Epshteyn

Mark D Anderson

Andrew Cornell

Wynn L Aker

Pierre Craen

Bruno Vande Vyvre

Chang Hong Chen

Shinji Nagano

Askold V Strat

Mehaboob Kumbalakkuzhiyil

Heng Tian

Devices and methods for providing acoustic signals are disclosed herein. An example method includes receiving an indication of an acoustic signal initiation action for an imaging device, and retrieving, based on the indication, an acoustic signal file from a memory of the imaging device. The example method further includes causing the imaging device to emit an acoustic signal indicated by the acoustic signal file. The acoustic signal includes a monotonic sweep across a plurality of frequencies that begins at a first frequency and ends at a second frequency that is different from the first frequency.

Devices and methods for providing acoustic signals

A system is disclosed which includes a laser which has a calibrated optical power and a calibrated tolerance. The system includes a driving circuit configured to generate a first current pulse and a second current pulse. The system includes a primary observer module configured to observe a first and second primary input. The system includes one or more secondary observer modules configured to observe one or more first and one or more second secondary inputs. The system includes a controller communicatively coupled to the laser, driving circuit, primary observer module, and the one or more secondary observer modules. The controller is configured to receive an information packet, calculate an optical power, determine a deviation of the optical power from the calibrated optical power, compare the deviation with the calibrated tolerance, and perform an action if the deviation exceeds the calibrated tolerance.

Systems for optical power control for laser safety of a time-of-flight illumination system

Method and systems for driving an aiming assembly of a barcode imager are provided. An example method includes obtaining an operating mode of the barcode imager having an aiming assembly and, in response, determining a duty cycle of an aiming pulse of the aiming assembly. That duty cycle is determined as a percentage of a frame duration of an imager sensor and, further, such that simultaneous constraints are satisfied by the aiming pulse. The constraints include a simultaneous frame duration-independent, peak pulse optical power constraint and a frame duration-dependent heat dissipation constraint.

Laser driving mode for aiming system of barcode imager

An indicia reading system and associated methods discriminate between types of media upon which encoded indicia is rendered. Encoded indicia rendered upon a medium are imaged using different sets of image acquisition parameter settings. An attempt to decode the encoded indicia that are imaged is made and the image acquisition parameter settings corresponding to successfully decoding the encoded indicia are identified. A type of the medium upon which the encoded indicia is rendered is determined based on which of the sets of image acquisition parameter settings correspond to the encoded indicia being successfully decoded.

Indicia reading systems and associated methods for determining a type of media upon which encoded indicia are rendered

Imaging arrangements and barcode readers including such imaging arrangements. An imaging arrangement for use in a barcode reader includes a housing. The imaging arrangement also includes a light source configured to emit light along a central light axis. The light source is disposed in the housing. The imaging arrangement also includes a lens having a first surface and a second surface opposite the first surface. The lens is disposed in the housing. The first surface is configured to face the light source and is structured to substantially collimate light received from the light source into a collimated beam. The second surface includes surface structures structured to generate a patterned beam in response to receiving the collimated beam.

Barcode readers including illumination assemblies with different color lights

Output power of a laser beam emitted by a laser in an electro-optical reader is regulated by storing a killswitch byte in non-volatile memory, and by checking whether the killswitch byte is in a default state or a kill state prior to performing reading. A controller detects a fault condition and responsively changes the killswitch byte to the kill state, in order to permanently deenergize the laser and to maintain the laser permanently deenergized after the killswitch byte has been changed to the kill state.

Killswitch arrangement for and method of regulating laser output power in electro-optical readers

A system and method for processing an image of a document is disclosed. The method includes receiving at least one predetermined document parameter of the document. An image of the document is previewed on a display using a camera. The display provides a visual indication of a defect in the image based on the preview. A processor proposes a procedure to minimize the defect in the image. A user adjusts the camera in response to the proposal. The processor processes the image of the document.

Method and apparatus for enhanced document capture

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.

Arrangement for and method of regulating laser output power in electro-optical readers

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.

Arrangement for and method of controlling image exposure in an imaging reader

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.

Laser power control arrangements in electro-optical readers

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.

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.

Growing community of inventors

Shirley, NY, United States of America

Matthew D Blasczak