Abstract: A linear sensor array for imaging coded indicia includes an analog front end and a digital back end integrated on a single CMOS chip. A real-time, correlated double sampling circuit is used for noise suppression.
Abstract: A computing arrangement may include a first radio transceiver operating in accordance with a first communication protocol using a frequency band and a second radio transceiver operating in accordance with a second communication protocol using the frequency band. An access point operates in accordance with the first communication protocol and transmits a communication signal that has a frame including a first time interval indicative of when communications using the first communication protocol via the frequency band are permitted to the computing arrangement. The computing arrangement determines if the frame includes a second time interval, which is indicative of and is reserved for exclusive communications in accordance with the second communication protocol. If the second time interval is absent from the frame, the computing arrangement inserts the second time interval into the frame. The computing arrangement communicates with a further device only during the second time interval.
Type:
Grant
Filed:
September 10, 2007
Date of Patent:
November 4, 2008
Assignee:
Symbol Technologies, Inc.
Inventors:
James R. Fuccello, Anthony D'Agostino, Mark Orlassino
Abstract: A video imager processor and two radio frequency transceivers are supported on a common support having a predetermined form factor, such as that of a Compact Flash card commonly utilized in mobile computers. Common digital processing circuitry is used for processing the baseband signal from the RF transceivers, making a highly integrated and compact arrangement.
Abstract: An image projection module within a housing accessory is operative for causing selected pixels in a raster pattern to be illuminated to produce an image at different image planes of VGA quality. A personal media player is connected to the housing accessory and the image projection module to supply image signals for the image to be projected.
Abstract: A target is illuminated with illumination light along a direct optical path that has no optical surface areas shared with a folded optical path along which light is captured by an imager in an imaging reader.
Abstract: Management data is uploaded and downloaded in the field to data capture systems, such as electro-optical readers, RFID readers, and imagers, either before, after, or during data capture in a manner transparent to the system without disturbing the data capture.
Type:
Grant
Filed:
March 31, 2005
Date of Patent:
November 4, 2008
Assignee:
Symbol Technologies, Inc.
Inventors:
Robert James Pang, Thomas D. Bianculli, Edward Barkan, Robert Sanders, Wynn L. Aker
Abstract: An imaging system for an imaging-based bar code reader for capturing an image of a target bar code. In one exemplary embodiment, the imaging system includes: a sensor array including an array of photosensitive elements for converting, light impinging on the array of photosensitive elements into electrical signals based on light intensity; an imaging lens system for focusing light from a field of view onto the sensor array, the imaging lens system including a first lens assembly and a second lens assembly, the first lens assembly defining a first field of view and the second lens assembly defining a second field of view, the first and second fields of view being different; and a control for selectively choosing between the first and second fields of view for imaging the target bar code.
Type:
Application
Filed:
April 25, 2007
Publication date:
October 30, 2008
Applicant:
Symbol Technologies, Inc.
Inventors:
Igor Vinogradov, Edward D. Barkan, Mark Drzymala, Ming Yu
Abstract: A WLAN system and method enables network modeling and management through an easy-to-use user interface. A console coupled to the WLAN is configured to display a first set of graphical entities representing locations of the multiple sites in a geographical view, and display a second set of graphical entities in a site view representing a subset of the components selected in response to user input. An XML format may be used to display the various views on a browser operating within the console.
Abstract: A method for decoding a Miller-encoded signal having first and second quadrature components is provided. A Miller sub-carrier signal, synchronized with the Miller-encoded signal, is recovered from the quadrature components. A first, a second, a third, and a fourth half-bit correlation coefficient are calculated from at least one quadrature component and the Miller sub-carrier signal. A cross-correlation result of the first, the second, the third, and the fourth half-bit correlation coefficient is calculated. A value for an output bit is determined from the inverse sign of the cross-correlation result.
Abstract: An RF port device includes a digital module within a housing, wherein the digital module is configured to communicate with a network over a data connection (e.g., a GigE Ethernet connection), from which it may receive power. The digital module and housing are configured to removeably couple to two or more RF submodules—e.g., RFID reader submodules, 802.11 a/b/g access port submodules, 802.11n access port submodules, Wi-MAX submodules, Ultra Wide Band submodules, and Bluetooth submodules.
Abstract: Techniques are provided for techniques are provided for creating a mesh network in wireless local area network comprising a plurality of wireless switches. An IP address of the registration server can be configured on each of the wireless switches and used to open an IP socket from each of the wireless switches to the registration server. Each of the wireless switches register with a registration server by communicating configuration information about each of the wireless switches to the registration server. In one implementation, the configuration information for each switch comprises a switch IP address and a list of subnets the switch supports. The configuration information can be used by the registration server to create a wireless switch list which includes a listing of each of the wireless the switches in the wireless local area network. The configuration information about each of the wireless switches and the wireless switch list can then be communicated to each of the wireless switches.
Abstract: The present invention proposes novel antenna means mounted on handheld devices and methods of use of such antenna means with multiple radios. The novel antenna means exhibit smaller sizes, good performance, have higher reliability, and exhibit novel hardware configurations. The novel methods of utilization for the antenna means comprise the reception of an 802.11 RF signal to the antennas, the acquisition step while a radio is determining which antenna has the better signal and acquiring signal from that antenna, and usage by the Bluetooth signal of the remaining antenna.
Abstract: A plurality of image projection modules is operative for causing selected pixels in overlapping raster patterns to be illuminated to produce a large size image of high resolution of VGA quality in monochrome or color. The selected pixels in an overlap region of the patterns are illuminated at a lesser intensity to provide uniform brightness over the image. Multiple single mode lasers, or a multimode laser with an aperture stop, are employed to increase laser output power. Speckle noise is reduced by controlling the optical transmission characteristic of a projection screen. Three-dimensional images are generated by moving the screen. Cross-coupling between drive and feedback mechanisms in image projection is reduced for better image quality.
Type:
Grant
Filed:
October 27, 2004
Date of Patent:
October 28, 2008
Assignee:
Symbol Technologies, Inc.
Inventors:
Paul Dvorkis, Ron Goldman, Chinh Tan, Dmitriy Yavid, Frederick F. Wood
Abstract: A scan module includes a scan motor, a laser; a sensor; and a mirror module. The mirror module includes (a) a collection mirror having an opening and (b) a fold mirror having a first end physically coupled to the collection mirror. A second end of the fold mirror is separated by a gap from the collection mirror.
Type:
Grant
Filed:
September 19, 2007
Date of Patent:
October 28, 2008
Assignee:
Symbol Technologies, Inc.
Inventors:
Howard Shepard, Mark Drzymala, Edward Barkan, Heng Zhang, Vladimir Gurevich
Abstract: A method for processing information wherein information is received from a plurality of bar code scanners, preferably reading web codes, the source and destination information for the received information is determined and data from the received information is distributed to at least one destination identified by the destination information.
Type:
Grant
Filed:
April 6, 2001
Date of Patent:
October 28, 2008
Assignee:
Symbol Technologies, Inc.
Inventors:
Frederick Schuessler, Joseph Katz, Robert Sanders, Michael Poldino, Vincent P. Luciano, Adam Petrovich, Ron Goldman
Abstract: A wireless local area network for data communications between a computer and mobile units is provided with at least two cell controllers connected to the computer and one or more rf ports each connected to a primary interface of one cell controller and to a backup interface of another cell controller. A control program in the cell controller monitors data communications between the other cell controller and the rf port by a backup interface. The program is arranged to cause the second cell controller to assume primary communications functions for the rf port in the event primary communications functions between a first cell controller and the rf port are inoperative.
Abstract: A method and system for over-the-air testing of a radio transreceiver is described. The radio transreceiver is placed in an enclosure box that is shielded to prevent leakage of RF energy. A nest assembly holds in place the radio transreceiver during testing to provide repeatable results with different radios. The testing assembly allows high volume characterization of the radio transreceiver performance in an environment rich with interfering RF signals.
Abstract: Described is a system and method for power conservation in a wireless device. The method includes switching, by a wireless computing unit, from a first communication mode to a second communication mode at a predefined time interval. The unit receives wireless signals only when in the second communication mode, and the first communication mode is a power-save mode. The unit then receives a wireless signal, and initiates a wireless connection to a wireless arrangement to obtain traffic data from the wireless arrangement when the signal includes a traffic data indicator which is indicative of existence of the traffic data. The unit switches into the first communication mode when the indicator is absent from the signal.
Abstract: Described is a system and method for configuring a computing device. The method comprises detecting a coupling of a computing device to a host device, receiving first configuration data from the computing device, displaying the first configuration data on a graphical user interface on a display of the host device, generating second configuration data as a function of at least one change to the first configuration data entered via the graphical user interface and inputting the second configuration data to the computing device so that the computing device replaces the first configuration data with the second configuration data.