Patents by Inventor Richard E. Schumaker

Richard E. Schumaker 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).

  • Publication number: 20070268142
    Abstract: In one embodiment, a near-field RFID encoder is provided that includes a pair of capacitive elements formed from an arrangement of stripline conductors. The near-field encoder may non-resonantly excite RFID tags. In addition, the near-field encoder may characterize RFID tag quality using a VSWR measurement.
    Type: Application
    Filed: May 17, 2006
    Publication date: November 22, 2007
    Inventors: Lihu M. Chiu, Richard E. Schumaker, Theodore A. Chapman
  • Patent number: 7261479
    Abstract: An RFID label with embedded tag is passed through an RFID antenna in a printer system, where the RFID antenna allows a roll of such labels to pass in close proximity to the antenna and still allow each individual RFID tag to be read and/or programmed. The RFID antenna module is formed with a transmission line coupled to an RF phase splitter, where in one embodiment, the transmission line is formed from two parallel conductive strips.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: August 28, 2007
    Assignee: Printronix
    Inventors: Gordon B. Barrus, Richard E. Schumaker, Andrew W. Edwards, Kevin Mark Smith, Duane C. Gibbs, Rudy Concepcion, Jr.
  • Patent number: 7066667
    Abstract: An RFID label with embedded tag is passed through an RFID antenna in a printer system, where the RFID antenna allows a roll of such labels to pass in close proximity to the antenna and still allow each individual RFID tag to be read and/or programmed. The RFID antenna has a rectangular RF field spreader in contact with a triangular divergent RF conductor with an RF source point at the point. Ground planes are located on either side of the antenna. In another embodiment, the printer system extracts or parses bar code commands from a data stream and passes the commands to both a printer and an RFID reader to print the image and program the tag with the bar code information.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: June 27, 2006
    Assignee: Printronix
    Inventors: Theodore A. Chapman, Richard E. Schumaker, Andrew W. Edwards, Stephen S. Morris, James P. Harkins, Bradley S. Jarvis
  • Patent number: 7037009
    Abstract: An RFID label with embedded tag is passed through an RFID antenna in a printer system, where the RFID antenna allows a roll of such labels to pass in close proximity to the antenna and still allow each individual RFID tag to be read and/or programmed. The RFID antenna module is formed with a transmission line coupled to an RF phase splitter, where in one embodiment, the transmission line is formed from two parallel conductive strips.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: May 2, 2006
    Assignee: Printronix
    Inventors: Gordon B. Barrus, Richard E. Schumaker, Andrew W. Edwards, Kevin Mark Smith, Duane C. Gibbs, Rudy Concepcion, Jr.
  • Patent number: 6929412
    Abstract: An RFID label with embedded tag is passed through an RFID antenna in a printer system, where the RFID antenna allows a roll of such labels to pass in close proximity to the antenna and still allow each individual RFID tag to be read and/or programmed. The RFID antenna is formed with two parallel microstrip transmission lines coupled to an RF phase splitter there between.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: August 16, 2005
    Assignee: Printronix, Inc.
    Inventors: Gordon B. Barrus, Richard E. Schumaker, Andrew W. Edwards, Duane C. Gibbs, Kevin Mark Smith, Rudy Concepcion Jr.
  • Patent number: 6899476
    Abstract: An RFID label with embedded tag is passed through an RFID antenna in a printer system, where the RFID antenna allows a roll of such labels to pass in close proximity to the antenna and still allow each individual RFID tag to be read and/or programmed. The RFID antenna module is formed with a transmission line coupled to an RF phase splitter, where in one embodiment, the transmission line is formed from two parallel conductive strips.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: May 31, 2005
    Assignee: Printronix, Inc.
    Inventors: Gordon B. Barrus, Richard E. Schumaker, Andrew W. Edwards, Kevin Mark Smith, Duane C. Gibbs, Rudy Concepcion, Jr.
  • Patent number: 5595446
    Abstract: A printer is disclosed of the dot matrix type having a series of hammers with pins that print upon an underlying media, and which are released from magnetic retention by reversing the polarity of a permanent magnet and having electro-mechanical drive circuits and logic circuits. A power supply supplies an output of a voltage level for driving the electro-mechanical circuits connected to a ribbon drive, platen drive, paper feed, shuttle motor, and fans at a given voltage and the hammers at a different voltage. A thermal sensor is connected to a heat sink of the power supply, and to the printer controller to change the rate of printing when pre-established temperatures are sensed.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: January 21, 1997
    Assignee: Printronix, Inc.
    Inventors: Gordon Barrus, Richard E. Schumaker
  • Patent number: 4679191
    Abstract: The present invention provides a communications system that improves upon the availability of communications paths between devices and simplifies the connectivity requirements to communicate data and control information to and from a remote station. System nodes are provided which are disposed along a time multiplex network signal stream. The nodes serve to interface remote stations to the network signal stream and may also switch information to different stations connected to the same node. The nodes are operative to allocate a variable bandwidth of the network signal stream for data communications between devices connected to different nodes. The nodes include switching devices that may be configured to accommodate stations that operate at different speeds. Allocation of bandwidth may be dynamically varied such that system resources are not unnecessarily diverted. Control of bandwidth allocation and internal switching within the node is accomplished via control information communicated to and from the node.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: July 7, 1987
    Assignee: CXC Corporation
    Inventors: Gary A. Nelson, Patrick N. Godding, Richard E. Schumaker, Keith D. Walter, Edward S. Marrone, Stillman E. Gates, Everett O. Rigsbee, III, Michael D. Teener
  • Patent number: 4597077
    Abstract: A communications switching system is provided for transferring information between a plurality of node information highways (66,68) and between node information highways (66,68) and station ports (284,286), the system (221) comprising a plurality of switches (243) each switch having a station to highway section (244) and a highway to station section (246), each section (244,246) being in electrical communication with a station port (284,286) and with a plurality of node information highways (272,274). The station to highway section (244) and highway to station section (246) are each independently and dynamically configurable to communicate a selected bandwidth of information between the station ports and a selected node information highway. Each section (244,246) further being operative to serially integrate control information into the data stream communicated to the station port, and to derive control information from the serial signal stream received from the station port.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: June 24, 1986
    Assignee: CXC Corporation
    Inventors: Gary A. Nelson, Patrick N. Godding, Richard E. Schumaker, Keith D. Walter, Edward S. Marrone, Stillman F. Gates, Everett O. Rigsbee, III, Michael D. Teener
  • Patent number: 4587651
    Abstract: A variable bandwidth branch exchange system is disclosed for interfacing a network ring to a plurality of peripheral loops, each of the peripheral loops being connected to one or more local stations and to a node on the network ring. Time bit slots on the network ring signal stream are assigned, on a dynamic basis, for communication between local stations. The network ring signal stream is diverted to the peripheral loop by the node when the bit slots assigned to the local station connected to that loop become accessible at the node, thereby placing the peripheral loop in the network ring signal stream. Bit slot bandwidth is variable in accordance with the requirements of a particular local station. Voice, data, and image communications are supported. The modular nature of the system permits the implementation of multiple rings for wide area networking.
    Type: Grant
    Filed: May 4, 1983
    Date of Patent: May 6, 1986
    Assignee: CXC Corporation
    Inventors: Gary A. Nelson, Patrick N. Godding, Richard E. Schumaker, Keith D. Walter, Edward S. Marrone, Stillman F. Gates, Everett O. Rigsbee, III, Michael D. Teener