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VIRTUALISATION iPod shuffle: the "authentication" chip that isn't
VIRTUALISATION iPod shuffle: the "authentication" chip that isn't | iPod shuffle: the "authentication" chip that isn't |
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| by Stephen Withers | |
| Tuesday, 17 March 2009 | |
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And one of the things they found was that the remote controller contained a mysterious chip. With classic 1+1=3 reasoning, they jumped to the conclusion that it was an authentication chip to stop non Apple approved third-party earphones from working with the new iPods. It turns out that the truth is far more mundane. The chip converts remote-control button presses into the right combination of signals on the 'microphone' channel on the earphone connector. Unlike conventional three-way stereo mini-jacks (left, right, ground), the connectors used by Apple has an extra ring to accommodate the microphone signal. Please read on. |
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