On Thu, Jun 2, 2011 at 10:56 AM, Tim Bray <[email protected]> wrote:
> The whole thing seems like it's addressing a very limited market; how
> many people here at PDML have any interest in a GPS on their camera?
I do, for $50. Not $250. Given that I can buy a GPS navigation device
with maps of the entire United States, with perpetual updates, and a
touchscreen, and so forth for $100, I'm not enthusiastic about paying
the Photographic Equipment Premium for a dedicated device.
> Also, I'd be suspicious how well it works. Good GPS functionality on
> something that's normally switched off is a hard problem. It's a
> little easier for phones because they can get an initial rough fix via
> the cell network and other clues. But zeroing in starting from zero
> using only GPS signal is not, unless things have changed recently, a
> particularly well-solved problem.
Things are a lot better than they used to be. The SIRF Star III chip,
which is widely used and has been out for a good while, has these
specs:
Time To First Fix
Hot start - Autonomous <1 s
Warm start - Autonomous <35 s
Cold start - Autonomous <35 s
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