Symbol Technologies, LLC

William C Sackett

James R Giebel

David P Goren

Christopher Warren Brock

Stephen Jay Shellhammer

Bradley S Carlson

Sean A Connolly

Daniel F Brown

Anthony D Biuso

Frank Boccuzzi

Edward D Barkan

Vladimir P Gurevich

Gary G Schneider

Michael S Slutsky

Costanzo Difazio

Adam Levine

Duanfeng He

Miroslav Trajkovic

Eugene B Joseph

Alistair Robert Hamilton

Robert E Beach

Mehul M Patel

Jacob Sharony

Bruce A Willins

Matthew D Blasczak

Kevin Cordes

Paul R Poloniewicz

Altaf Mulla

Joseph Cabana

Edward Douglas Hatton

Patrick B Tilley

Anthony Fama

Robert Wild

Daniel C Curry

Thomas F Boehm

Michael Ryder

Ellen Cordes

Michael M Slutsky

Mehul c/o Symbol Technologies Inc Patel

Objects associated with targets to be read by image capture are detected without any additional hardware in an imaging module. Return light is captured over a field of view of the module. Images are processed, during an object detection mode, to determine their image brightness from the captured return light. Illumination is emitted from an illumination light assembly at a first power level to determine a first image brightness from a first processed image, and at a different, reduced, second power level to determine a second image brightness from a second processed image. An object is determined to be in the field of view when a difference between the first image brightness and the second image brightness equals or exceeds a detection threshold value.

Compact imaging module and imaging reader for, and method of, detecting objects associated with targets to be read by image capture

A method includes the following (1) detecting light returned from a target with an imaging sensor during a first frame exposure time period to capture a first image when a first illumination light is projected towards the target; (2) processing the first image to determine the light intensity of a second illumination light; (3) detecting light returned from the target with the imaging sensor during a second frame exposure time period to capture a second image when the second illumination light is projected towards the target; and (4) decoding a barcode in the second image. The light intensity of the first illumination light changes with time at least during part of the first frame exposure time period.

Method of controlling exposure on barcode imaging scanner with rolling shutter sensor

A method includes the following: (1) projecting a light pattern towards a target object; (2) detecting light returned from the target object through an imaging lens arrangement with an imaging sensor to capture a first image with changes in the position of the focus plane of the imaging lens arrangement; (3) processing the first image to determine an optimized position of the focus plane of the imaging lens arrangement; (4) detecting light returned from the target object with the imaging sensor to capture a second image when the position of the focus plane of the imaging lens arrangement is maintained at the optimized position; and (5) decoding a barcode in the second image.

Optimizing focus plane position of imaging scanner

A method includes the following: (1) projecting a light pattern towards a target object; (2) detecting light returned from the target object through an imaging lens arrangement with an imaging sensor to capture at least a first slit-frame-image and a second slit-frame-image; (3) determining an optimized position of the imaging lens arrangement; (4) detecting light returned from the target object with the imaging sensor to capture an image of a barcode when the imaging lens arrangement is maintained at the optimized position; and (5) processing the image of the barcode to decode the barcode. In the method, determining the optimized position includes processing at least the first slit-frame-image and the second slit-frame-image.

Method of optimizing focus plane position of imaging scanner

An apparatus and method read a target by capturing return light from the target with a solid-state monochrome imager operative for generating an output data stream in a monochrome format having a plurality of slots containing pixel data indicative of an image of the target, and with a color controller for receiving the output data stream in a color format different from the monochrome format. A converter circuit converts the monochrome format into the color format and includes an input formatter for formatting the output data stream to have additional slots, a buffer for receiving auxiliary pixel data related to the image of the target, and an output formatter for inserting the auxiliary pixel data from the buffer into the additional slots and for processing both the pixel data and the auxiliary pixel data to enhance the reading of the target.

Converting a data stream format in an apparatus for and method of reading targets by image capture

A method and apparatus for imaging targets with an imaging reader. The method includes: (1) capturing return light from a target over a field of view of the solid-state imager and generating image data corresponding to the target; (2) transmitting the image data from the solid-state imager to the host when the gate circuit is set to the transmitting mode; and (3) preventing the image data from transmitting to the host when the gate circuit is set to the blocking mode.

Method and apparatus for controlling output of the solid-state imager in a barcode reader

An imager in an imaging reader captures light from a target, generates image data from the captured light, and generates a pixel clock signal having a pixel clock frequency in synchronism with the image data. A controller is connected via an electrical conductor to the imager, and controls the imager to transfer the image data, receives the image data, and processes the image data. A circuit suppresses electromagnetic radiation generated by the conductor during the image data transfer, and includes a spread spectrum modulator for modulating the pixel clock signal to generate a variable spread spectrum signal having a spread spectrum frequency that periodically varies above and below the pixel clock frequency, and a buffer having a plurality of registers for receiving and temporarily storing the image data, and for varying as a function of the spread spectrum frequency how much of the image data is being temporarily stored.

Arrangement for and method of suppressing electromagnetic radiation interference in an imaging reader

An imaging assembly in an imaging reader for electro-optically reading indicia includes a solid-state imager having an array of image sensors, and a focus control element, such as a liquid imaging lens, having a variable transfer function characteristics for capturing, optically modifying and directing return light from the indicia over a field of view onto the imager for processing into an electrical signal indicative of the indicia during a reading mode of operation; and a controller for controlling the imaging assembly to optically modify the return light in accordance with a known transfer function stored in a memory accessible to the controller during a calibration mode of operation prior to the reading mode.

Imaging reader with adaptive focusing for electro-optically reading symbols

A microprocessor and an application specific integrated circuit are embodied as two chips mounted on a printed circuit board which is, in turn, mounted on a scan engine for use in an electro-optical reader. This dual chip architecture is readily configurable and controls reader operation.

Scan engine with dual chip architecture for use in electro-optical readers

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.

System and method for aiming an optical code scanning device

Interleaving multiple logical data streams into one physical data stream reduces overhead required to process the multiple logical data streams. Multiple arrays of data values are interleaved into a combined array of data that simulates a frame of data for input to a data port such as a video port. Revised timing and synchronization signals are provided to permit transmission of the combined array according to video data port protocol. The processor includes instructions for locating the various arrays of data values within the combined array.

Processing image data from multiple sources

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.

Management of data capture systems

Battery power consumption and data transfer latency of an electro-optical reader in a wireless network are minimized by turning a radio off in a default state, and by turning the radio on only after the reader has generated data to be transferred along the network.

Method of and arrangement for minimizing power consumption and data latency of an electro-optical reader in a wireless network

Techniques are provided for frequency coordination among two different wireless network protocols, such as the IEEE 802.11 and Bluetooth protocols, operating in proximity with one another. Coordination is accomplished by the use of a first radio transceiver operating in accordance with a first communication protocol (which may be the 802.11 protocol) and using a frequency band (which may be the 2.4 GHz band), a base station connected to a wired network and operating in accordance with the first communication protocol, a second radio transceiver operating in accordance with a second communication protocol (which may be the Bluetooth protocol) and using the frequency band, and a coordinator associated with the base station for, in turn, activating the first radio transceiver, deactivating the first radio transceiver, activating the second radio transceiver, and deactivating the second radio transceiver.

Coexistence techniques in wireless networks

A system and method described for tracking portable devices. The system may include a transmitter which transmits wireless inquiries to a plurality of portable devices and a receiver receiving replies to the inquiries from the portable devices. In addition, the system may include a memory storing identifier data corresponding to the portable devices and a processor coupled to the memory and to the receiver, the processor retrieving from each reply, identifier data uniquely identifying a particular one of the portable devices which generated the reply and comparing the identifier data to the stored identifier data. Furthermore, the system may include an alarm system coupled to the processor and controlled based on the comparison of stored identifier data to the identifier data retrieved from the replies.

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Rocky Point, NY, United States of America

William C Sackett