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| mike727 | "Backscatter" used for power efficient 'video streaming': http://www.newswise.com/doescience/?article_id=693080 | 03:35 |
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| Vajb | hmm I am not sure if I like the idea of HD cameras everywhere. No matter how much electricty they use. | 08:18 |
| Vajb | but nice acheivement from them. | 08:18 |
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| buZz | you rather want them to be 4K? | 08:51 |
| buZz | lol 'battery-free streaming' | 08:52 |
| Vajb | think I'll wait 'till it's 32K ;) | 08:53 |
| buZz | its battery-free, by depending on batteries | 08:53 |
| buZz | derp | 08:53 |
| Vajb | if it were powersourceless, that would be something | 08:54 |
| buZz | i dont understand why they replaced 'transmit' with 'backscattters' | 08:54 |
| Vajb | Im not familiar with either | 08:55 |
| buZz | > In physics, backscatter (or backscattering) is the reflection of waves, particles, or signals back to the direction from which they came. | 08:55 |
| buZz | they are not doing that | 08:55 |
| Vajb | then it doesn't sound correct term | 08:56 |
| buZz | ah, they call it backscatter, because they send a radio signal pure for power transmission to power transmitting something back | 08:57 |
| buZz | so it kinda looks like backscatter | 08:58 |
| buZz | 16 feet distance powered a batteryless camera enough from a 'cellphone' for a 10fps 480p video | 08:59 |
| buZz | oh, also 8bit grayscale instead of color | 09:00 |
| buZz | wow at even lower res they get even more impressive, 13fps 112x112 at 150 feet O_o | 09:01 |
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| Vajb | ah it uses same technic as that batteryless "mobilephone". Draws power from radiosignal. | 12:12 |
| Vajb | i put it in quotes since it is just a cirquitboard atm. | 12:13 |
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| Maxdamantus | Pretty sure it'll use a lot more power. | 13:19 |
| Maxdamantus | and I'm not really sure what the use case of a wireless security camera (which needs to have another device to communicate with, probably in plain sight) is. | 13:20 |
| Maxdamantus | on the surface, it at least seems a lot more advanced than the last article I saw about backscatter technology. | 13:24 |
| Maxdamantus | which was described as something like "powerless WiFi" using "backscatter techniques involving electromagnetic radiation" | 13:24 |
| Maxdamantus | translation: using a camera to determine how an object is currently reflecting light | 13:25 |
| Maxdamantus | (or rather, a radio, but easier to visualise what sort of information is being transmitted if you just remember that cameras also capture electromagnetic radiation) | 13:26 |
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| sixwheeledbeast | in an industry that is driven by increasing pixel density to reduce cost, I fail to see where 13fps 112res will fit. | 14:03 |
| sixwheeledbeast | PoE has made these systems PnP with relatively small cost upto 100m | 14:04 |
| bencoh | Yeah, but PoE seems kinda ... simpler :) | 14:18 |
| bencoh | Or at least easier to achieve :) | 14:19 |
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