Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6535801 | Method and apparatus for accurately determining the position of satellites in geosynchronous orbits | George J. Geier, Roger Charles Hart | 2003-03-18 |
| 6535548 | Mobile wireless communication devices for receiving spread spectrum signals and methods therefor | — | 2003-03-18 |
| 6532251 | Data message bit synchronization and local time correction methods and architectures | George J. Geier, Troy L. Strother | 2003-03-11 |
| 6445927 | Method and apparatus for calibrating base station locations and perceived time bias offsets in an assisted GPS transceiver | George J. Geier, Gerald Gutowski | 2002-09-03 |
| 6429811 | Method and apparatus for compressing GPS satellite broadcast message information | Yilin Zhao, George J. Geier | 2002-08-06 |
| 6429808 | Method and apparatus for assisted GPS integrity maintenance | George J. Geier, Yilin Zhao | 2002-08-06 |
| 6369753 | Host-independent monolithic integrated circuit for RF downconversion and digital signal processing of GPS signals | Douglas W. Schucker, Jeffrey J. Ogren | 2002-04-09 |
| 6346911 | Method and apparatus for determining time in a GPS receiver | — | 2002-02-12 |
| 6313787 | Method and apparatus for assisted GPS protocol | George J. Geier, Yilin Zhao, Roger Charles Hart | 2001-11-06 |
| 6300899 | Fixed site data-aided GPS signal acquisition method and system | — | 2001-10-09 |
| 6295024 | Autonomous data aided GPS signal acquisition method and system | Issac N. Durboraw, III | 2001-09-25 |
| 6211819 | Mobile station location determination in a radio communication system | George J. Geier | 2001-04-03 |
| 6121923 | Fixed site and satellite data-aided GPS signal acquisition method and system | — | 2000-09-19 |
| 5953384 | Automatic measurement of GPS cable delay time | William J. Walsh, Edward Dean Berry | 1999-09-14 |
| 5893044 | Real time clock apparatus for fast acquisition or GPS signals | Jeffrey J. Ogren | 1999-04-06 |
| 5889492 | Method and apparatus for an acquisition-aided Geo-locating subscriber unit | Christopher Neil Kurby | 1999-03-30 |
| 5745741 | Frequency stable periodic pulse generation apparatus and method | — | 1998-04-28 |
| 5525999 | Multi-receiver master control station for differential GPS and method | Stephen John Sheard | 1996-06-11 |
| 5365182 | Method and apparatus for low power clock generation for high speed applications | — | 1994-11-15 |
| 5175557 | Two channel global positioning system receiver | Howard L. Kennedy | 1992-12-29 |
| 5148452 | Global positioning system digital receiver | Howard L. Kennedy | 1992-09-15 |
| 4660143 | Programmable realtime interface between a Block Floating Point processor and memory | Sam M. Daniel | 1987-04-21 |
| 4482975 | Function generator | Cary Richard Champlin, Sam M. Daniel | 1984-11-13 |
| 4354249 | Processing unit for multiplying two mathematical quantities including at least one complex multiplier | Sam M. Daniel | 1982-10-12 |