請問歐洲使用汽車導航哪家圖資更新較佳??

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我也推薦TomTom
到英國兩個月了，都是靠Treo 650 + TomTom6帶路，從來沒有在導航過程出錯。
（偶爾會因為buffer cache不足而無法啟動程式，但清一下就OK了，這是650的問題。）如果買他的車機表現應該更好才對。
語音指示非常清楚、準確，尤其會事先建議靠內側或外側車道行走，以方便下次左右轉，到了路口不會手忙腳亂。應付這裡一大堆roundabout也游刃有餘。先用圖示告知由第幾個出口離開。
不過我是沒試過跨國規劃路線的問題，在英國沒機會啦

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據我所知，XL用的是Globe Locate 公司的Hammerhead晶片
但是與SiRF  III比起來有何差異，這就需要專業人士解答了。

原文由 hineed 於 2007-8-12 22:35 發表
不知tom tom哪款的GPS晶片較新??TOM TOM ONE??XL ??

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找到一篇Review

節錄當中的一段

GPS chipset
The ONE XL is the first TomTom PND we've tested, which features the Hammerhead GPS chipset. So this is the first chance we've had to compare the famous SiRF Star III chipset with Global Locate's hardware. We've done this by driving a few routes with both the normal ONE as well as the ONE XL attached to the windscreen, after which we analysed the GPS data with the help of GPS Visualiser.

And we can put everyone's mind at ease: the Hammerhead doesn't perform any worse than the SiRF chipset. Even more: our test has shown that this new chipset is a bit more accurate,and finds more satellites than the SiRF chipset could. On the other hand, the difference between time to first fix of both devices is negligible.

似乎評價不壞

原文由 liaolc 於 2007-8-14 01:13 發表

如果是Hammerhead晶片，資料上看來是A-GPS的solution，用在行動電話裝置是OK，用在PND就有點抱歉了，照之前TOMTOM ONE的架購看來，說不定還是要透過手機的藍牙傳輸去UPDATE快速定位資料庫，才能有SIRF III的定 ...