Patents Assigned to Teletransactions, Inc.
  • Patent number: 6236674
    Abstract: A transceiver which keeps circuitry associated with a receiver in a powered down state during periods when a Received Signal Strength Indicator (RSSI) indicates that a signal being received is below a pre-determined threshold level, and which begins to power up the transmitter as soon as it is determined that a packet being received requires a response. The RSSI signal represents the strength of any signal current being received, and if the RSSI signal falls below a given threshold level, digital circuitry associated with the back-end circuitry of the receiver system is disabled. If the RSSI signal rises above the threshold level, the digital circuitry of the receiver is enabled. A control circuit within the transceiver processes the packet as it is received to determine whether the packet requires a response.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: May 22, 2001
    Assignee: Teletransactions, Inc.
    Inventors: Daniel J. Morelli, Michael L. Trompower
  • Patent number: 5838720
    Abstract: A transceiver which begins to power up the transmitter as soon as it is determined that a packet being received requires a response. A control circuit within the transceiver processes the packet as it is received to determine whether the packet requires a response. If it is determined that a response is necessary, the control circuit provides a control signal to the transmitter to power up the transmitter from a sleep mode even before the entire packet has been received and processed. The control circuit then continues to process the remainder of the packet as it is received while the transmitter powers up from the sleep mode. In this manner, the transmitter will become stabilized much earlier. Accordingly, the transceiver is able to respond more quickly than conventional devices and is thus able to increase response times and overall data exchange rates.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: November 17, 1998
    Assignee: Teletransactions, Inc.
    Inventor: Daniel J. Morelli
  • Patent number: 5825617
    Abstract: A hand-held workslate computer is disclosed. The workslate computer includes electronic circuitry including a microprocessor and a visual display screen electrically coupled to the microprocessor. The display screen includes a position sensitive contact portion. The workslate computer also includes a housing including a top face and a bottom face separated by a side wall and defining an interior region, the housing supporting the electronic circuitry and the visual display screen. A set of modular devices is provided, each device including interface circuitry. The housing further includes at least two modular device docking stations adapted to releasably engage a selected one of the set of modular devices. Interface circuitry is provided to electrically couple circuitry in the selected modular device and the microprocessor. The modular devices may be mounted to selected modular device docking stations to provide an ergonomically correct weight balance.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: October 20, 1998
    Assignee: Teletransactions, Inc.
    Inventors: Gary Kochis, Donald Embree, Robert F. Meyerson, Calvin E. Lewis
  • Patent number: 5796088
    Abstract: A portable hand held bar code dataform reader is disclosed. The reader includes a main body portion configured to be held in an operator's hand and a bar code reader module portion rotatably secured to the main body portion. The bar code reader module portion is selectively rotated by the operator to facilitate reading bar code dataforms which are at varying orientations and heights with respect to the operator. An actuation switch is located on a surface facing the operator and is position to be actuated by the thumb of the hand holding the reader.
    Type: Grant
    Filed: August 15, 1995
    Date of Patent: August 18, 1998
    Assignee: Teletransactions, Inc.
    Inventor: Daniel G. Wall
  • Patent number: 5750975
    Abstract: A bar code dataform reader. The reader includes a housing defining an interior region and supporting an exit window. A bar code dataform reading assembly is mounted on a rotatable support within the housing interior region. The reader further includes support rotating structure coupled to the support to facilitate external rotation of the support to a selected one of a plurality of positions. The reading assembly is selectively actuatable to read a bar code dataform and includes a light source component mounted on the support such that, for each of the plurality of support positions, a light beam emitted by the light source component exits the housing through the exit window in a different direction with respect to the housing.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: May 12, 1998
    Assignee: Teletransactions, Inc.
    Inventors: Robert F. Myerson, Daniel G. Wall, Timothy P. O'Hagan
  • Patent number: 5751257
    Abstract: A shelf tag comprising a liquid crystal display having optical states which are stable without power and an interface that allows for each character element to be programmed easily by sweeping a programming device across the character element contacts with all power and signal requirements being supplied to the shelf tag by the programming device. The programming device can be integrated with a portable transaction computer equipped with a bar code reader or can be embodied in a stand-alone apparatus capable of receiving user input, displaying information and interfacing to the shelf tags. A method of using the shelf tags, the programming device and a radio frequency computer local area network are presented which automates many typical business applications such as inventory updating and simultaneously changing prices advertised on the shelf tags.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: May 12, 1998
    Assignee: Teletransactions, Inc.
    Inventor: Jeffrey W. Sutherland
  • Patent number: 5699074
    Abstract: A front-lit, non-gray scale liquid crystal display device (10) including a polymer stabilized cholesteric liquid crystalline material has two optical states stable in the absence of an electric field. In a reflecting optical state incident illumination is directly reflected by the liquid crystal, producing a light pixel. In a scattering optical state incident illumination is absorbed by a black surface on the rear of the display, producing a dark pixel. A method employing a plurality of display control signals having the same polarity and differing phase relationships permits the fast video response of the display, notwithstanding that the average time to switch from a scattering optical state to a reflecting optical state is about 30 milliseconds, requiring about fifteen seconds to update a typical 480-row liquid crystal display using conventional array sequencing techniques. Several routines are presented for determining when to update such a display for a variety of applications.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: December 16, 1997
    Assignee: Teletransaction, Inc.
    Inventors: Jeffrey W. Sutherland, Timothy P. O'Hagan
  • Patent number: 5657201
    Abstract: A portable data collection terminal including an arm mounting assembly is disclosed. The terminal includes a terminal housing having a docking base protruding from its bottom surface. The docking base is configured to snugly fit in a recess defined by a thin docking member. The docking member is secured to a sleeve overlying an operator's forearm by a flexible strap. The strength of attachment between the terminal housing and the docking member is small enough to permit the terminal housing to release from the docking member if a sufficient force is applied to the terminal housing.
    Type: Grant
    Filed: November 6, 1995
    Date of Patent: August 12, 1997
    Assignee: Teletransactions, Inc.
    Inventor: Gary Kochis
  • Patent number: 5594470
    Abstract: A portable electronic work slate unit includes a customizable array of data devices and input/output devices which are selectively integrated in a compact and highly ergonomic structure. Increased operator productivity is accomplished by use of several possible user interface media including a multi-function display and input/output unit including a digitizer, position sensitive screen, and video display panel. Selectively integratable user interface components include a bar code scanner, RF modulator for radio frequency communication, modem, audio input/output, as well as the multi-purpose display. All components are integrated by use of a handle unit which can house a battery as well as removable modules in a manner so as to minimize operator fatigue and discomfort, as well as enhance productivity.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: January 14, 1997
    Assignee: Teletransaction, Inc.
    Inventors: Robert F. Meyerson, Yung-Fu Chang
  • Patent number: 5579487
    Abstract: A configurable electronic work slate unit includes a customizable array of data devices and input/output devices which are selectively integrated in a compact and highly ergonomic structure. Increased operator productivity is accomplished by use of several possible user interface media including a multi-function display and input/output unit including a digitizer, position sensitive screen, and video display panel. Selectively integratable user interface components include a bar code scanner, RF modulator for radio frequency communication, modem, audio input/output, as well as the multi-purpose display. All components are integrated by use of a handle unit or module docking assembly which can house a battery as well as removable modules in a manner so as to minimize operator fatigue and discomfort, as well as enhance productivity.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: November 26, 1996
    Assignee: Teletransaction, Inc.
    Inventors: Robert F. Meyerson, Yung-Fu Chang, Ynjiun P. Wang, Daniel G. Wall