Patents by Inventor Ronald E. Foerster

Ronald E. Foerster 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).

  • Patent number: 5600706
    Abstract: A position system and method utilizes a plurality of range transceivers located at known fixed locations and which are adapted to transmit approximately synchronized digital range signals for receipt by both a primary receiver and a supplemental receiver, the former disposed at a known location and the latter disposed at an unknown location. The range transceivers are adapted to transmit pulse sequences which include an error portion corresponding to the approximate synchronization error of each range signal. This error portion is constantly updated in accordance with the last determined synchronization errors of the corresponding range signals received by a secondary transceiver. In an alternative embodiment employing Code Division Multiple Access (CDMA) technology, the range transceiver time stamp on transmitted range signals may be adjusted to account for the measured timing error for a given range transceiver.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: February 4, 1997
    Assignee: U S West, Inc.
    Inventors: Michael J. Dunn, Don H. Atherly, Douglas O. J. Reudink, Martin J. Feuerstein, Ronald E. Foerster, Ching Chuang, Dino J. Vendetti
  • Patent number: 5295180
    Abstract: A system for marking a plurality of zones within a cellular service area. One or more marker transmitters are disposed throughout a cellular area to transmit a zone identification signal that is independent of normal RF cellular coverage to a mobile or portable cellular receiver. Each zone identification signal is transmitted in a radio frequency coverage area that illuminates the zone to be identified and is constrained by a similar transmitter jamming the zone signal. The marker transmitters are programmed to transmit the zone identification signal during a predefined time slot so that more than one marker transmitter may simultaneously transmit the zone identification signal, thereby increasing the area in which the zone identification signal can be received by the mobile unit. In order to reduce the area in which a zone identification signal may be received by a mobile unit, the marker transmitters may transmit a jamming signal at the same time as the zone identification signal is transmitted.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: March 15, 1994
    Assignee: U S West NewVector Group, Inc.
    Inventors: Dino J. Vendetti, Don H. Atherly, Ching Chuang, Elliott H. Drucker, Michael J. Dunn, Ronald E. Foerster, David G. Schoenmaker