Isn't the problem with headphone battery live rather the actual power consumption of the amplifier / speakers over the bluetooth receiver?
T.
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Apple's Adoption of 'Bluetooth Low Energy' Paves Way for New Possibilities
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Isn't the problem with headphone battery live rather the actual power consumption of the amplifier / speakers over the bluetooth receiver?
T.
That will always be the biggest draw on power but Bluetooth has always been pretty heavy too.
Why would it not need my permission? I don't want advertising just randomly being sent to my BT 4.0 devices simply because I'm nearby, any more than I currently want other people's BT 2.0 devices to pair with mine without my permission. I'm walking along and my watch receives an ad for the porn shop across the road? No thanks.
AirPort requires joining (unless you set your device to be promiscuous, for which you takes your chances), which implicitly means I'm giving permission. And I'm not talking about permission from the base-station end, I'm talking permission from my end. For my computer to be touched by another network or device. Because while the focus is often on the networks and services being offered, end-points are also subject to the two-way-street of permission granting.
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another proprietary standard?
Just my 2 cents... But BlueTooth 4.0 in the MBA is a bad sign for anyone hoping for an NFC-enabled iPhone 5.
After all, BT 4.0 is comparable in some ways to NFC: low power sipping (versus virtually no power consumption for NFC...), portability... But in addition to that it can stream data.
Except maybe no one else than Apple will be using it.
Just my 2 cents... But BlueTooth 4.0 in the MBA is a bad sign for anyone hoping for an NFC-enabled iPhone 5.
After all, BT 4.0 is comparable in some ways to NFC: low power sipping (versus virtually no power consumption for NFC...), portability... But in addition to that it can stream data.
Except maybe no one else than Apple will be using it.
I would think it's simple that you have to do the connecting and it's not just going to be random connections. Only makes logical sense. But for those who want it, it would be very cool.
Actually i believe that NFC uses more power than BT 4 low at least that what I have read.
Just a quick calculation on that shows you to be a dedicated runner...
14000 miles in 5 years is roughly 7.5 miles/day every day since then. Wow!! Impressive stuff
So.. the BCM20702 gives Bluetooth 4.0.. while the BCM2070 in the MBPs earlier in the year gave Bluetooth 3.0? I feel a bit cheated
Also there's the whole thing about Apple saying it only has 2.1+EDR.. confusing..
It isn't confusing. Previous macs have 2.1+EDR, while the mini and the air have 4.0. Apple skipped entirely over 3.0.
I think the best use case for this will be how Apple is reportedly working on the ability for the iPhone to act as your proximity locking/unlocking device for the Mac. Walk up to the computer and it unlocks for you. Walk away and the computer automatically locks. threedevices.com
IIRC NFC uses power only on one end.
Say, my public transportation card (I'm in Paris, this is called Navigo).
It's a card (credit-card format) with a chip inside and a spiral-shaped antenna.
When I validate for my trip, I bring the card near the NFC receiver of the gate. This receiver in fact emits an electromagnetic field, which is received by my card through the spiral antenna. The received electromagnetic energy is transformed into current using induction (thanks to the spiral) and this current powers the chip. The chip then emits a signal using this power, through the spiral antenna, and this signal is received by the gate. The computer inside the gate authenticates my card and the gate opens.
The card doesn't need to be battery-powered. Induction makes the magic happen.
Not sure if i'm clear, though.
But in my opinion (i might be really wrong anyway) NFC is low on energy thanks to inductive energy generation. Maybe this only applies to master-client systems (like gate and Oyster/Navigo card).
If anybody can develop on that (versus BT), it would be very interesting !
thanks,
Olivier
1) Airdrop (Mac-to-Mac file exchange)
2) iOS 5 Wifi syncing
why bother with Bluetooth then...
I noticed you're in Japan. "Lasting a year" was probably based on how often we Americans exercise.
How about instead of that pie in the sky crap we get mouses with extended battery life.
Some of us already have that. It's called the Mobi Inductive Magic Charger. http://bit.ly/mX5ypS
Just a quick calculation on that shows you to be a dedicated runner...
14000 miles in 5 years is roughly 7.5 miles/day every day since then. Wow!! Impressive stuff
Some of us has to work.
Good idea... unlock pass codes are a pain in the back side. But if someone steals my phone, thats where the "Find my iPhone" app comes in handy and you can lock it down remotely. Might be a better alternative for you.
Airdrop doesn't require pairing, making it a bit more versatile in my mind. Plus, you can communicate with multiple computers via airdrop. Also, BT is generally too slow to make file sharing too useful. Even BT 3.0+HS uses Wi-Fi for it's increased throughput, but it still requires pairing. BT is designed for peripherals, nothing else.
I find that to be such an absurd concern that I didn't even understand your question.
The technology can't do anything to your phone without your phone voluntarily reading the information. It's like being concerned that FM Radio is going to be pushed into your iPhone involuntarily. Could Apple make it that your iPhone will play any FM radio signal you walk by? Yes, it's possible... but it's not going to happen.
arn