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Comment Not 200 lm/W (Score 1) 421

I looked at the data sheet of the Cree XLamp MK-R and even though they state "Delivering up to 200 Lumens per Watt" in the header, looking closer the best I found was nominal 147.25 lm/W and top luminance bin = 157.51 lm/W (which I wonder if I can order and at what price?).

Forward voltage is 11.7V at 700mA = 8.19W

The highest lumen output I found was 1206lm at 5700K and 6500K at a CRI of 65, which makes an efficiency of:

1206lm / 8.19W = 147.25 lm/W

If you can live with such a low CRI and cold white then that isn't bad, but not even the best.

I have seen 150 lm/W from other manufacturers at 5000K and CRI 70, which is a more natural white and slightly better CRI and perhaps even with a better R9 (Red), but the Cree data sheet doesn't state the individual values of R1 to R14, it is difficult at this point to compare.

What is however very good of this Cree LED is the thermal resistance at 1.7 C/W. Together with the max. junction temp at 150C it provides a component that is very well suited for high power and high luminance lamps.

An interesting development, but not the 200 lm/W I was hoping to see.

Comment Re:How about a real open protocol? (Score 1) 231

"I would rather see an open standard become supported or used by Skype/Microsoft."

Yes, I agree, and with the knowledge of the history of Microsoft I would have to add:

"I would like to see the extinction of World hunger, end of all wars and a beautiful woman to all men, and vice versa, but ..."

that is not going to happen until Hell freezes over!

Or Microsoft runs out of money.

Comment Re:Yup (Score 3, Interesting) 282

The right to play the content on any device I see fit? At any time?

When I have bought a tune or a video the producer shouldn't care where I play it as along as it is for myself or my household. Your rights stops at my front door.

And I am still not trying to convince anyone to pay a TV license for materials and I don't "fire up iPlayer and get the fucking video". So now you want to combine the consumers usage with a specific device?

I just want to be able to purchase a CD or DVD with music or video content on it. As simple as that.

Comment Re:Yup (Score 2, Interesting) 282

And did I write that I wanted the rights of the producer erased and leave the content provider in the cold? Please show me how you read that into it? (atarashii meagane katta ho ga ii kamoshirenai?).

It is a digital world, and the producer side, or what seems to be the defenders of the content producers have amalgamated too much political backing, actually leaving the consumers out in the cold, and I would like to move the balance the other way, even just a little.

And I am not trying to convince anyone to pay a TV license fee or any other fee. Where did I write that?
Actually, I just want content producers to concentrate on doing that, produce content and make it available on reasonable terms.

Today, too often some content is either not available or not on reasonable terms if it is.

Comment Re:Yup (Score 3, Interesting) 282

No, it is about taking rights away from the consumer, in an attempt to enforce and manage the rights of the producer.

Unfortunately, it is often not really enforceable making people that attempts to use their fair-use rights into criminals, but still not providing the sought after control of the producers.

So, it is a loose-loose situation.

A great deal of re-thinking of the situation ought to be done.

PlayStation (Games)

PS3 Hacked? 296

Several readers have sent word that George Hotz (a.k.a. geohot), the hacker best known for unlocking Apple's iPhone, says he has now hacked the PlayStation 3. From his blog post: "I have read/write access to the entire system memory, and HV level access to the processor. In other words, I have hacked the PS3. The rest is just software. And reversing. I have a lot of reversing ahead of me, as I now have dumps of LV0 and LV1. I've also dumped the NAND without removing it or a modchip. 3 years, 2 months, 11 days...that's a pretty secure system. ... As far as the exploit goes, I'm not revealing it yet. The theory isn't really patchable, but they can make implementations much harder. Also, for obvious reasons I can't post dumps. I'm hoping to find the decryption keys and post them, but they may be embedded in hardware. Hopefully keys are setup like the iPhone's KBAG."

Comment Re:not gonna work (Score 1) 265

Well, if drunken half naked cheerleaders appear at a party with Belgium beer, I'll be the first in line to join the party :-)

Other than that, I don't really understand your analogy to Belgians?

Except for being a 'constructed country' almost like Jugoslavia, I see a lot of good things about Belgium, and much better than any animal analogy. For example they speak much better French than those from the country called France, and they actually invented what is normally known as "French Fries".

Amd making the best beer in the world makes me wonder what makes you make the suggestion:

"then we're no better than animals, or Belgians."

Or do you in fact mean the very strong horses from Belgium, that I may not know to be known as "Belgians", but as they are horses, they are of course 'animals'?

Just curious.

Comment Digital Multia/UDB and Sharp PC-1251 (Score 1) 622

The Sharp is actually a Pocket Calculator, though it has a 24KB ROM with BASIC in it, and a qwerty keyboard with little calculator buttons. It was fun to learn on, but the one line LCD display got a little boring in the end.

Otherwise, I am very proud of my still working mail-server, which is a Digital Multia with an AXP21066 CPU, which is the smallest 64bit CPU ever made, fully loaded RAM (128MB) and a (now rather small, but still fine and working) SCSI disk:

$ cat /proc/cpuinfo
cpu                     : Alpha
cpu model               : LCA4
cpu variation           : -4294967301
cpu revision            : 0
cpu serial number       : Linux_is_Great!
system type             : Noname
system variation        : 0
system revision         : 0
system serial number    : MILO-2.2-17
cycle frequency [Hz]    : 166629900
timer frequency [Hz]    : 1024.00
page size [bytes]       : 8192
phys. address bits      : 34
max. addr. space #      : 63
BogoMIPS                : 323.24
kernel unaligned acc    : 0 (pc=0,va=0)
user unaligned acc      : 0 (pc=0,va=0)
platform string         : N/A
cpus detected           : 0
$ cat /proc/meminfo
        total:    used:    free:  shared: buffers:  cached:
Mem:  129015808 126205952  2809856        0  2613248 13729792
Swap: 269467648  7520256 261947392
MemTotal:       125992 kB
MemFree:          2744 kB
MemShared:           0 kB
Buffers:          2552 kB
Cached:          12344 kB
SwapCached:       1064 kB
Active:           4744 kB
Inactive:        11240 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:       125992 kB
LowFree:          2744 kB
SwapTotal:      263152 kB
SwapFree:       255808 kB
$ df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/sda3             17213849  10246172   6085553  63% /
/dev/sda1                52088       564     51524   2% /dos

I believe the date on the motherboard is 1994 and the BIOS says 1995, with an option of loading Windows NT :-)
I don't really remember, and I don't like to boot it, because the mobo-battery (for the BIOS) is not good anymore and it is only barely that I can remember to boot it.

It is however, the most stable system I have ever had, and a few Intel/AMD based PC systems have come and gone in the mean time.

As far as I remember, Slashdot originally ran on a similar platform?

I, and quite a few friends and colleagues cried a few tears when Compaq bought Digital, and a few more when AXP was discontinued!
Not that I am a fan of VMS, but it was sort of fun to play with, in its own archaic way. Sort of like the fun of trying to sleep next to a hungry tiger ;-)

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