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Posts by bsimpsen

This datasheet for a readily available ambient sensor suggests that if one wanted to fit it in an iPod Touch, one could.   http://www.vishay.com/docs/81317/temt6200.pdf   And there's no reason to think that Apple is limited to using off-the-shelf components. A thinner sensor is possible.
It's not helpful to put so much effort into being wrong. The purple fringing on high contrast detail (the leaves) is indeed chromatic aberration. The close proximity of the fringe to the leaf edge is the result of the very small displacement of the focal length for various wavelengths of light passing through the optical train. You'll notice that the purple fringe around the sun is quite displaced from it, so the same mechanism is clearly not at work. That purple fringe...
Given the very fast US preorder sellout, and the much wider international rollout for the iPhone 5, I think the analyst's can be forgiven their expectation for better than a 25% opening weekend from last year. I'm not sure which conclusion to draw from this 5 million launch. If Apple's manufacturing target was 5M, that might be an admission of slowing growth. If Apple couldn't make more than 5M, those analysts who've been touting Mr. Cook's supply chain prowess may have...
Yesterday, we received three iPhones and all of them have surface finish flaws. Two of the phones have blemishes in the anodize near one of the antenna gaps. Analysis under a microscope reveals that the surface texture is intact, and that the anodize fades from black to clear, indicating a problem during the anodizing process. Two of the phones have scratches in the surface that penetrate the anodize, revealing the underlying raw aluminum and one of the phones has a...
There are eight pads on the connector. The connector body is ground, for a total of 9 connections. Power must be routed through at least one of the signal connections, so during charging, there may be less than eight "signals". As mentioned during the keynote, the Lightning interface is adaptive, so what's carried on each pin (power, USB, audio, etc) will depend on the situation.
Whatever interface this new connector supports now, it will be capable of supporting other interfaces in the future. The circuitry inside iOS devices is capable of recognizing and reconfiguring as needed, just as the iPod Shuffle headphone connector automatically switches between analog headphone signals and digital USB signals. So we might see USB 2.0 (or maybe 3.0) now and Thunderbolt in the future. As stated elsewhere, the interface is not currently the bottleneck,...
Current safety standards allow presentation of up to 42V on exposed contacts. This is approximately the detection threshold for dry skin. Nine volt batteries with exposed contacts are in routine use around the world. Their greatest danger to children is as a choking hazard. All usb ports and adapters are voltage and power limited, as required by safety regulations. The potential for "major problems" is quite low.   If the leaked images of the iPhone5 are accurate, it will...
Friction and heat have no effect. It's entirely about the thickness of the material separating the conductive surface (your skin) from the touch panel, and the dielectric constant of that material. If heat were involved, how would any human operate an iPhone that's at finger temperature?
Wrong. Capacitive areas do indeed work through cloth and other insulating materials, such as the protective plastic sheets placed over touch screens. The reason they don't work with a fingernail is that you must tip your finger up and away from the surface to use your nail, so the flesh of your fingertip is much farther away from the glass surface than if it were pressed up hard against your fanny through the lining of your pocket. This is why swipe to unlock was...
If Samsung loses the suit and pays the $2.5Billion, it must still stop infringing the patents or take a license. There will be a continuing cost for Samsung going forward, either in loss of revenue from reduced functionality of their products, or license fees.
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