Study & research the GDF format, abstract deeply the useful information to rich Telenav map data contents.

学习和研究GDF数据格式，能够从中深入挖掘有用的信息，丰富导航数据的内容。

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"If I were big enough I would have bought Navteq, " jokes TeleNav chief executive H.

FORBES: Nokia Redraws The Map

While Telenav, for example, offers a free version of its navigation app, it doesn't include such audio.

ENGADGET: Switched On: A road trip with Siri

The software is still being tweaked from what TeleNav tells us, so we're going to assume that won't be an issue once it's on the market.

ENGADGET: An Engadget adventure with TeleNav's G1 GPS software: hands-on, impressions, and video