Function of the light in front of 5700 XM
There is a light at the top right of front face of 5700 XM. I could not find the function of it in User Guide or in the forums I have searched. And in my device, it is never on to indicate something.
It's not a light, it's a light sensor.
It detects the amount of light and decides if the key pad needs lighting or not. Many phones have this feature now.
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Rephrased Question: No amber or white light on front functioning anymore
I am an early purchaser of Apple TV. Until about a month ago there was a white light in the front of the Apple TV, except while sleeping. This is the same light that would flash amber to denote problems. That light no longer operates either white or amber. I called Apple and the tech person said that light on her Apple TV does not operate either. There is only a smaller light to the side which is functional on both hers and mine. I am wondering what happened to the larger white/amber light and if anyone else has experienced this same issue. All else with my Apple TV works great.
Thanks.No idea what the issue is - I guess it's still under warranty if you're that worried.
If it works then maybe you're happy without the light.
You might try unplugging from the mains and letting it sit for an hour or so then repowering.
AC -
Turning off the Wireless signal light on front of router
Is there a way to turn off the wireless signal light on front of router that constantly flickers when using wireless, want to know this so i can use wireless without being recognized.
ThanksPut an electrical tape over it.
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When starting the computer I get the dong but then it stops with three loud beeps as the light in the front flashes in line with the beeps. The beeps repeat till switching off
Check out this Apple support article https://support.apple.com/kb/HT1547
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What happened to the Fill Light function in the Develop Module?
That was one of my most used functions in Develop. Why would you remove that function in the LR4 beta? Seems an odd choice.
The set-up of the tonality controls has been changed completely, and you need to relearn everything at this point. This is the price to pay for better image corrections.
Always set the Exposure / Contrast sliders first and, if necessary, touch-up the lighter and darker tones with the Highlights and/or Shadows sliders.
If you need to go further or to fine tune the extreme values, then go to the Whites & Blacks sliders.
Rgds, Gilles. -
My MacBook will not boot up all I get is a white screen with the light on the front of the mac blinking and a beeping.
Check this Apple support article https://support.apple.com/kb/HT1547
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The light on the front of my apple tv is flashing rapidly and it won't send a signal to the TV. The book says it is having trouble but does not say what it is or how to fix it. My daughter was watching it last night and I think she turned the tv off without putting it to sleep. Any suggestions?
Sorry the news here is not good. If the light just stays flashing then it is not able to succesfully startup the most basic part of the software. The only option at this point is to find a USB cable that will let you plug ATV into a computer with iTunes and do a full restore of the system firmware.
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today my mac won't turn on at all...the light at the front is remaining on and at a constant brightness however the screen is still black! I'm not sure what to do next?
If you can log in blindly or using the flashlight method, it is possible your screen brightness somehow got set all the way to nothing. I don't have my Macbook with me right now to test it out but I believe it may not be possible to adjust the brightness at the log-in screen so you have to be able to log in first (though I could be wrong on that).
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What do the lights on the front indicate
I have read and searched and can't find the answer to this. I have 5 different lights on the front of the laptop, 3 are white and don't blink, one was amber and didn't blink but it now white and does blink, the 5th is a solid amber.
For no good reason, after the computer updated yesterday we lost our internet connection and it appeared the network card as well. This morning when I turned it on again, the computer logged on to the network no problem. I don't understand this and wonder if the lights are supposed to tell me something that I don't know.
I have a Satellite L755-S5214The Quick Tour Guide that came with your machine explains (with pictures) what all those lights (called System Indicator Lights) are for and different places in your User Guide indicates how they may vary under certain circumstances.
Starting from the left:
!. AC Power light On when power plugged in.
2. Computer On/Off light. Normally white when on but will blink orange if computer is in sleep mode.
3. Battery Light. White when fully charged, User's Guide explains when not fully charged. See pages 47 and 48 of
the User's Guide.
4. HDD Activity light. Off when HDD idle, blinking when HDD active.
5. Memory Card Reader light (Only on certain models).
6. Wireless indicator light. Orange when wireless on. No light when wireless off.
C.B.
C.B.
Toshiba Sat. C75D-B7260 Win 8.1 64 Bit--Toshiba Sat. L775D-S7132 Win 7 HP SP1 64 Bit and Win 10 PRO Technical Preview--Toshiba Sat. L305-S5921 Win Vista SP2 32 Bit -
The light on the front of my Appletv keeps blinking and it will not connect
THe light on my Appletv is blinking and it will not connect.
My Apple TV version 3 shut down a few days ago in the middle of watching a movie and it was flashing continuously
I could not get it to work at all I tried resetting it, all I got was a Macintosh apple logo on my TV screen
and nothing else. I had no connection to my iMac with Air Parrot software, or from my new macbook Air with Airplay.
Airplay was no longer visible to select on my macbook Air.
So I connected it to my Mac desktop, using USB and a power cord, to reset it back to factory defaults, as directed by Apple.
This took approx 90 mins to complete, then I had to set it up again…….BUT I cannot get it to work it refuses to
accept any password, and I have updated to a new password today but it will not accept it….
I presumed, I use the same Apple ID username & password that I use for iTunes and iMac etc for my Apple TV also ?
or does Apple TV have a different username & password ?
any ideas
Thanks
Terry -
What do the lights on the front of my NB-205 mean?
I know what the plug icon means (plugged into the wall). I know the wifi symbol means I'm connected to wifi. I know what the battery light means (though I don't know when it turns on). The rest of the lights are a complete puzzle to me, however. Does anyone know what they mean (from left to right)?
Thank you!gmreplay, the users manual should explain which LED is for what.
Usually;
The power cord LED is to indicate DC IN power
The Circle-line LED is to indicate if the System is turned On or Off
The Battery LED is to indicate the battery is charged or full
The Platter/Disk LED is to indicate HDD/SSD activity
Tom, I dont think you can turn down the brightness. You'll need to apply some transparent colored sticky tape. -
Satellite A660 How can i turn off the lighting of the power button?
Hello, I recently bought a new Toshiba A660-1FL.
However bothers me is the lighting of the multimedia keys, if I work in the dark.
In Bios I could turn off the led illumination, but the power on/off button is still lighting,that distracts me when i am working.
This notebook has two power LED, so the power on lighting is in my opinion, unnecessary.
My question is: How can i turn off the lighting of the power button?Here you can see the LED with the same function in front of you: http://s3.imgimg.de/uploads/t009aae62jpg.jpg
Yes in fact, the difference is color, design, but also location and brightness of the LED.
For me, this LED is too bright and it is distracting in the dark, as you can see here: http://s3.imgimg.de/uploads/leddf570760jpg.jpg
I was today at a local electronics store, and saw that Toshiba has the brightest Power LED on A660, but why it must be placed under the LCD and not in the front as in my old notebook Toshiba A210.
I also had the idea with a tape, but it would look ugly, and it must be removable without residue.
P.S. Also the fingerprints on the glossy keyboard do not look nice. -
A replacement for the Quicksort function in the C++ library
Hi every one,
I'd like to introduce and share a new Triple State Quicksort algorithm which was the result of my research in sorting algorithms during the last few years. The new algorithm reduces the number of swaps to about two thirds (2/3) of classical Quicksort. A multitude
of other improvements are implemented. Test results against the std::sort() function shows an average of 43% improvement in speed throughout various input array types. It does this by trading space for performance at the price of n/2 temporary extra spaces.
The extra space is allocated automatically and efficiently in a way that reduces memory fragmentation and optimizes performance.
Triple State Algorithm
The classical way of doing Quicksort is as follows:
- Choose one element p. Called pivot. Try to make it close to the median.
- Divide the array into two parts. A lower (left) part that is all less than p. And a higher (right) part that is all greater than p.
- Recursively sort the left and right parts using the same method above.
- Stop recursion when a part reaches a size that can be trivially sorted.
The difference between the various implementations is in how they choose the pivot p, and where equal elements to the pivot are placed. There are several schemes as follows:
[ <=p | ? | >=p ]
[ <p | >=p | ? ]
[ <=p | =p | ? | >p ]
[ =p | <p | ? | >p ] Then swap = part to middle at the end
[ =p | <p | ? | >p | =p ] Then swap = parts to middle at the end
Where the goal (or the ideal goal) of the above schemes (at the end of a recursive stage) is to reach the following:
[ <p | =p | >p ]
The above would allow exclusion of the =p part from further recursive calls thus reducing the number of comparisons. However, there is a difficulty in reaching the above scheme with minimal swaps. All previous implementation of Quicksort could not immediately
put =p elements in the middle using minimal swaps, first because p might not be in the perfect middle (i.e. median), second because we don’t know how many elements are in the =p part until we finish the current recursive stage.
The new Triple State method first enters a monitoring state 1 while comparing and swapping. Elements equal to p are immediately copied to the middle if they are not already there, following this scheme:
[ <p | ? | =p | ? | >p ]
Then when either the left (<p) part or the right (>p) part meet the middle (=p) part, the algorithm will jump to one of two specialized states. One state handles the case for a relatively small =p part. And the other state handles the case for a relatively
large =p part. This method adapts to the nature of the input array better than the ordinary classical Quicksort.
Further reducing number of swaps
A typical quicksort loop scans from left, then scans from right. Then swaps. As follows:
while (l<=r)
while (ar[l]<p)
l++;
while (ar[r]>p)
r--;
if (l<r)
{ Swap(ar[l],ar[r]);
l++; r--;
else if (l==r)
{ l++; r--; break;
The Swap macro above does three copy operations:
Temp=ar[l]; ar[l]=ar[r]; ar[r]=temp;
There exists another method that will almost eliminate the need for that third temporary variable copy operation. By copying only the first ar[r] that is less than or equal to p, to the temp variable, we create an empty space in the array. Then we proceed scanning
from left to find the first ar[l] that is greater than or equal to p. Then copy ar[r]=ar[l]. Now the empty space is at ar[l]. We scan from right again then copy ar[l]=ar[r] and continue as such. As long as the temp variable hasn’t been copied back to the array,
the empty space will remain there juggling left and right. The following code snippet explains.
// Pre-scan from the right
while (ar[r]>p)
r--;
temp = ar[r];
// Main loop
while (l<r)
while (l<r && ar[l]<p)
l++;
if (l<r) ar[r--] = ar[l];
while (l<r && ar[r]>p)
r--;
if (l<r) ar[l++] = ar[r];
// After loop finishes, copy temp to left side
ar[r] = temp; l++;
if (temp==p) r--;
(For simplicity, the code above does not handle equal values efficiently. Refer to the complete code for the elaborate version).
This method is not new, a similar method has been used before (read: http://www.azillionmonkeys.com/qed/sort.html)
However it has a negative side effect on some common cases like nearly sorted or nearly reversed arrays causing undesirable shifting that renders it less efficient in those cases. However, when used with the Triple State algorithm combined with further common
cases handling, it eventually proves more efficient than the classical swapping approach.
Run time tests
Here are some test results, done on an i5 2.9Ghz with 6Gb of RAM. Sorting a random array of integers. Each test is repeated 5000 times. Times shown in milliseconds.
size std::sort() Triple State QuickSort
5000 2039 1609
6000 2412 1900
7000 2733 2220
8000 2993 2484
9000 3361 2778
10000 3591 3093
It gets even faster when used with other types of input or when the size of each element is large. The following test is done for random large arrays of up to 1000000 elements where each element size is 56 bytes. Test is repeated 25 times.
size std::sort() Triple State QuickSort
100000 1607 424
200000 3165 845
300000 4534 1287
400000 6461 1700
500000 7668 2123
600000 9794 2548
700000 10745 3001
800000 12343 3425
900000 13790 3865
1000000 15663 4348
Further extensive tests has been done following Jon Bentley’s framework of tests for the following input array types:
sawtooth: ar[i] = i % arange
random: ar[i] = GenRand() % arange + 1
stagger: ar[i] = (i* arange + i) % n
plateau: ar[i] = min(i, arange)
shuffle: ar[i] = rand()%arange? (j+=2): (k+=2)
I also add the following two input types, just to add a little torture:
Hill: ar[i] = min(i<(size>>1)? i:size-i,arange);
Organ Pipes: (see full code for details)
Where each case above is sorted then reordered in 6 deferent ways then sorted again after each reorder as follows:
Sorted, reversed, front half reversed, back half reversed, dithered, fort.
Note: GenRand() above is a certified random number generator based on Park-Miller method. This is to avoid any non-uniform behavior in C++ rand().
The complete test results can be found here:
http://solostuff.net/tsqsort/Tests_Percentage_Improvement_VC++.xls
or:
https://docs.google.com/spreadsheets/d/1wxNOAcuWT8CgFfaZzvjoX8x_WpusYQAlg0bXGWlLbzk/edit?usp=sharing
Theoretical Analysis
A Classical Quicksort algorithm performs less than 2n*ln(n) comparisons on the average (check JACEK CICHON’s paper) and less than 0.333n*ln(n) swaps on the average (check Wild and Nebel’s paper). Triple state will perform about the same number of comparisons
but with less swaps of about 0.222n*ln(n) in theory. In practice however, Triple State Quicksort will perform even less comparisons in large arrays because of a new 5 stage pivot selection algorithm that is used. Here is the detailed theoretical analysis:
http://solostuff.net/tsqsort/Asymptotic_analysis_of_Triple_State_Quicksort.pdf
Using SSE2 instruction set
SSE2 uses the 128bit sized XMM registers that can do memory copy operations in parallel since there are 8 registers of them. SSE2 is primarily used in speeding up copying large memory blocks in real-time graphics demanding applications.
In order to use SSE2, copied memory blocks have to be 16byte aligned. Triple State Quicksort will automatically detect if element size and the array starting address are 16byte aligned and if so, will switch to using SSE2 instructions for extra speedup. This
decision is made only once when the function is called so it has minor overhead.
Few other notes
- The standard C++ sorting function in almost all platforms religiously takes a “call back pointer” to a comparison function that the user/programmer provides. This is obviously for flexibility and to allow closed sourced libraries. Triple State
defaults to using a call back function. However, call back functions have bad overhead when called millions of times. Using inline/operator or macro based comparisons will greatly improve performance. An improvement of about 30% to 40% can be expected. Thus,
I seriously advise against using a call back function when ever possible. You can disable the call back function in my code by #undefining CALL_BACK precompiler directive.
- Like most other efficient implementations, Triple State switches to insertion sort for tiny arrays, whenever the size of a sub-part of the array is less than TINY_THRESH directive. This threshold is empirically chosen. I set it to 15. Increasing this
threshold will improve the speed when sorting nearly sorted and reversed arrays, or arrays that are concatenations of both cases (which are common). But will slow down sorting random or other types of arrays. To remedy this, I provide a dual threshold method
that can be enabled by #defining DUAL_THRESH directive. Once enabled, another threshold TINY_THRESH2 will be used which should be set lower than TINY_THRESH. I set it to 9. The algorithm is able to “guess” if the array or sub part of the array is already sorted
or reversed, and if so will use TINY_THRESH as it’s threshold, otherwise it will use the smaller threshold TINY_THRESH2. Notice that the “guessing” here is NOT fool proof, it can miss. So set both thresholds wisely.
- You can #define the RANDOM_SAMPLES precompiler directive to add randomness to the pivoting system to lower the chances of the worst case happening at a minor performance hit.
-When element size is very large (320 bytes or more). The function/algorithm uses a new “late swapping” method. This will auto create an internal array of pointers, sort the pointers array, then swap the original array elements to sorted order using minimal
swaps for a maximum of n/2 swaps. You can change the 320 bytes threshold with the LATE_SWAP_THRESH directive.
- The function provided here is optimized to the bone for performance. It is one monolithic piece of complex code that is ugly, and almost unreadable. Sorry about that, but inorder to achieve improved speed, I had to ignore common and good coding standards
a little. I don’t advise anyone to code like this, and I my self don’t. This is really a special case for sorting only. So please don’t trip if you see weird code, most of it have a good reason.
Finally, I would like to present the new function to Microsoft and the community for further investigation and possibly, inclusion in VC++ or any C++ library as a replacement for the sorting function.
You can find the complete VC++ project/code along with a minimal test program here:
http://solostuff.net/tsqsort/
Important: To fairly compare two sorting functions, both should either use or NOT use a call back function. If one uses and another doesn’t, then you will get unfair results, the one that doesn’t use a call back function will most likely win no matter how bad
it is!!
Ammar MuqaddasThanks for your interest.
Excuse my ignorance as I'm not sure what you meant by "1 of 5" optimization. Did you mean median of 5 ?
Regarding swapping pointers, yes it is common sense and rather common among programmers to swap pointers instead of swapping large data types, at the small price of indirect access to the actual data through the pointers.
However, there is a rather unobvious and quite terrible side effect of using this trick. After the pointer array is sorted, sequential (sorted) access to the actual data throughout the remaining of the program will suffer heavily because of cache misses.
Memory is being accessed randomly because the pointers still point to the unsorted data causing many many cache misses, which will render the program itself slow, although the sort was fast!!.
Multi-threaded qsort is a good idea in principle and easy to implement obviously because qsort itself is recursive. The thing is Multi-threaded qsort is actually just stealing CPU time from other cores that might be busy running other apps, this might slow
down other apps, which might not be ideal for servers. The thing researchers usually try to do is to do the improvement in the algorithm it self.
I Will try to look at your sorting code, lets see if I can compile it. -
I recently had my iphone 4s screen repaired because the screen was cracked. It was all ok and then a few weeks later something strange happened. My touchscreen works, but the screen doesnt show, you can see the light in the background but no picture? has anyone got any ideas as to what the problem is, is it self-repairable or even repairable at al?
The LCD Display connector has partially come loose from the logic board connector, and simply needs to be pressed back down into place. Or the front screen assembly is now faulty, and needs to be replaced again.
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Jco Function issue : The initial password has expired (request a new one)
Hi Friends,
Could you please help me to resolve this issue. I am able to start my session using SAP Jco Start Action block. But while invoking the BAPI using
SAP JCo Function action block I am getting the below error. I am 100% sure that my credentials are correct. I am able to logon to ECC using SAP Front GUI.
I am using MII 14.0 patch SP4
Any help on this very much appreciated.
<Rowsets DateCreated="2014-07-22T12:33:49" EndDate="2014-07-22T12:33:49" StartDate="2014-07-22T12:33:49" Version="14.0 SP4 Patch 0 (Nov 22, 2013)">
<FatalError>JCOProxy error: Problem retrieving JCO.Function object: The initial password has expired (request a new one)</FatalError>
</Rowsets>]]
Thanks in advance
ShajiHi Friends,
This issue got resolved when I cleared the BAPI list cache at MII using below URL.
http://hostname:port/XMII/JCOProxy?Mode=Reset
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