1
David R Gildea, Charles Trimble: Cordless SPS smart antenna device. Trimble Navigation, John Schipper, September 6, 1994: US05345244 (170 worldwide citation)

Cordless antenna apparatus for determination of the location of an observer and/or of the time of observation by use of a Satellite Positioning System (SPS), such as the Global Positioning System or the Global Orbiting Navigational Satellite System. In each embodiment, the apparatus includes a Smart ...


2
David R Gildea: Differential GPS smart antenna device. Trimble Navigation, John Schipper, June 4, 1996: US05523761 (116 worldwide citation)

Integrated antenna apparatus for determination of the location of an observer and/or of the time of observation by use of a GPS or a GLONASS or other Satellite Positioning System that uses differential corrections of the pseudorange, the location and/or the observation time. The apparatus includes a ...


3
David R Gildea, Arthur F Lange, Charles Abraham: Compact GPS receiver/processor. Trimble Navigation, William E Pelton, January 19, 1999: US05861841 (111 worldwide citation)

Apparatus for determining the present location of an observer on the Earth's surface, the apparatus including an antenna to receive Global Positioning System (GPS) signals from two or more GPS satellites and a credit card size GPS signal processing Smartcard attached to the antenna that receives the ...


4
David R Gildea: GPS receiver using data bit timing to achieve a fast time to first fix. Trimble Navigation, David R Gildea, December 29, 1998: US05854605 (106 worldwide citation)

A GPS receiver and a method for improving time to first fix (TTFF). The GPS receiver includes an internal clock for maintaining an approximate clock time during a standby mode and a microprocessor system including a data bit timer code, a temperature compensation code, and a learned time adjustment ...


5
Allen P Edwards, David R Gildea, Chung Y Lau: Calibration of vector modulators using a scalar detector. Hewlett Packard Company, James M Williams, January 5, 1988: US04717894 (98 worldwide citation)

Calibration of a vector modulator is done using a scalar detector to measure the amplitude of the RF output signal, phase shifters to adjust the relative phases of the I and Q components of the RF carrier, and variable attenuators in the I and Q modulation signal input lines to adjust the relative a ...


6
Eric B Rodal, Michael C Detro, David R Gildea, James M Janky: Antenna with curved dipole elements. Trimble Navigation, William E Pelton, December 22, 1992: US05173715 (73 worldwide citation)

An antenna comprises a base plate forming a ground plane, a coaxial feed serving as a mast connected to the base plate and extending along an axis that is normal to the ground plane, and two orthogonal dipoles each formed of two elements. Each dipole element has a first end connected to and supporte ...


7
David R Gildea, Lloyd H Banta: Differential GPS receiver system linked by infrared signals. Trimble Navigation, David R Gildea, December 31, 1996: US05589835 (72 worldwide citation)

A GPS receiver system to determine and display a geographical differential Global Positioning System (DGPS) location where the components of the system are interconnected with an airwave infrared (IR) link. The system includes a GPS Smart Antenna receiver module to determine the geographical locatio ...


8
Peter V W Loomis, David R Gildea, James M Janky, John F Schipper: Authentication of accumulated instrument data. Trimble Navigation, John Schipper, July 18, 2000: US06092193 (46 worldwide citation)

Methods and apparati for representing and storing a sequence of digital data values so that, once stored in memory, a data value cannot be modified, or cannot be modified without detection. Detection of subsequent data alteration may use error checksums, storage of instrument data in different data ...


9
Lea Ann McNabb, David R Gildea: Method and apparatus for automatically aiming an antenna to a distant location. Trimble Navigation, David R Gildea, January 18, 2000: US06016120 (30 worldwide citation)

An antenna aiming method and apparatus for automatically pointing an antenna to a selected distant location. The antenna aiming apparatus includes a database for storing data for distant locations, an electronic compass for determining a reference azimuth for the local antenna, and a global position ...


10
David R Gildea, Mark L Nagel: PCI card for receiving a GPS signal. Trimble Navigation, David R Gildea, November 3, 1998: US05832247 (15 worldwide citation)

A peripheral component interconnect (PCI) global positioning system (GPS) card for receiving a GPS signal. In a first embodiment the PCI card includes a GPS downconverter. In a second embodiment the PCI card including the GPS downconverter is integrated into a personal computer for correlating a GPS ...



Click the thumbnails below to visualize the patent trend.