GPS Reviews & Technology

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Garmin’s HotFix Ephemeris Data Prediction Reduces GPS Start Times

GPS navigation device manufacturers know that a quick time to first fix (TTFF) after a GPS receiver is switched on is a selling point with consumers. Running predictive calculations of satellite positions is one way to speed up the time taken to establish a lock on a few GPS satellites so that navigation can begin. It works by giving the restarted GPS device a head start by knowing where to […]

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Speech Recognition GPS Navigation

Research into speech recognition has been ongoing for over 25 years and has had proponents such as Defense Advanced Research Projects Agency (DARPA) and IBM. In recent years this significant body of research has begun to pay off with more consumer computing and electronics hardware incorporating speech recognition command systems. Pioneer AVIC-F500BT GPS Navigator A recent survey by VoiceBox, a leading speech recognition products supplier, revealed that there is a […]

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Traffic Message Channel (TMC) Traffic and Travel Information for GPS Navigators

Traffic Message Channel (TMC) is an extra paid service which delivers information about traffic conditions to suitably equipped GPS navigators including heavy traffic, delays, accidents, road works, black spots and speed cameras. When integrated into route calculations traffic information gives a driver options for alternative routes to avoid delays saving time and fuel. Many traffic services also provide travel information. garmin nuvi 2×5 series featuring Traffic Message Channel (TMC) Traffic […]

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MSN Direct Traffic and GPS Location Based Services

MSN Direct will bring location based services information direct to your GPS unit. It’s available in 100 of the largest cities across the United states (check MSN Traffic service coverage). Traffic reports and other information is sent to your GPS navigator through an FM signal. An MSN Direct Receiver can come built into your GPS navigator or can be purchased separately for compatible devices. MSN Direct Traffic MSN Direct location […]

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Transflective TFT Displays

Transflective LCD displays are commonly used for displays intended for use in direct sunlight such as handheld GPS units. In low light (indoors) transflective (transflective = transmissive + reflective) displays use backlighting. In bright light (sunlight) they reflect light off a mirrored surface behind the display to boost backlighting making the display more legible and reducing power consumption. Only the area of the display exposed to sunlight increases its light […]

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GPS Head Up Displays (HUD) Set to Storm the Market

Head up display (HUD) technology is set to be the next significant technology to be integrated into GPS automotive navigators. It will follow text-to-speech for announcing street names, speech recognition systems for control and Bluetooth for hands-free phone calls in improving driving safety. A significant proportion of car crashes (22.7%) can be attributed to driver distraction which includes anything that draws the drivers focus of attention away from the traffic […]

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Microvision’s PicoHUD

Microvision’s PicoHUD with laser powered projection is significantly smaller and brighter and has higher contrast than other HUD technologies available at the moment. The PicoHUD is a demonstration unit to showcase the capabilities of the PicoP display engine for potential use in HUD for automobiles, trucks and busses. The unit was demonstrated earlier this year at the display demonstrated at the International Consumer Electronics Show (CES). Microvision’s PicoHUD Microvision is […]

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CSR eGPS Hybrid Positioning Technology

CSRs eGPS is another hybrid positioning technology combining the best of integrated GPS and cellular measurements in order to expand the range of environments where accurate positioning is possible. The hybrid nature of the positioning technology also improves responsiveness and power consumption. Importantly eGPS does not depend on the upgrading of any existing infrastructure. CSR eGPS Comparative demonstrations run by CSR have shown improved time to first fix (TTFF) in […]

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TMC/FM Traffic for GPS Navigators

Traffic is an extra paid service which delivers to suitably equipped GPS navigators information about traffic conditions including heavy traffic, delays, accidents, road works, black spots and speed cameras. In the U.S. Traffic Message Channel (TMC/FM), MSN Direct and XM NavTraffic are three prominent traffic service providers. Service features and quality varies between the providers and different locations. Areas of coverage need to be checked prior to purchasing a Traffic […]

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Atomic Clock On A Chip Improving GPS Accuracy And Reliability

Accurate time measurement was the technology breakthrough that enabled longitude measurement. Much later the Global Positioning Satellite (GPS) was also made possible by a further leap in time measurement – the atomic clock. Position determination accuracy and time measurement are intertwined. Accurate measurement of the length of time for GPS signals to travel from global positioning satellites to your GPS unit is what allows distances from locked satellites to be […]

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