Database Develop

How to get USB 480Mbit (USB 2.0) Speed ???

Hi,
the Kaiser has USB-speed specified with 480 Mbit, but the speed to put onto it some MP3s via ActiveSync is not much faster than with my Magician (USB1.1) before. If I put in my computer directly the MicroSD card (max 5MB/sec) it is much faster although 5MB/sec << 480 Mbit. So the weak point is not the card. Is there any idea to increase the speed filling my card via direct USB connection ?
Thanks in advance !
Best,
Hugo

Your usb data speed depends on what your com port is set to. if you have alot of usb ports then they share the bandwidth between them. so you may only get 20% of your actuall bandwidth if you have a few other usb devices sharing the bandwidth. you can go to your device manager on your pc and increase the percentage your com port uses of the bandwidth

Thanks for your answer,
and you may be right, if I had a lot of devices conncted to my PC. But I have not. The point is: If I put the microsd into an USB adaptor and connected to the PC, it is quite fast, if I took the Kaiser connecting it ti the same USB, it is slow.
Any other thoughts?
Best,
Hugo

thehugonline said:
If I put the microsd into an USB adaptor and connected to the PC, it is quite fast, if I took the Kaiser connecting it ti the same USB, it is slow.
Click to expand...
Click to collapse
This holds true for all PDA devices connected via USB...not just the Kaiser...activesync may be the bottleneck.

Ok,
if ActiveSync may be the bottleneck, how do you work around this slow copy-process? With CardExpord it is quite faster than with ActiveSync (thanks for the hint), but still far away from the limit :
To copy 58 MB from PC to Magician via CardExport - it needed 94 sec
58 MB from PC to Kaiser via CardExport - 69 sec
58 MB from PC to Kaiser via ActiveSync - 235 sec
58 MB from PC to Card via USB Adaptor - 12 sec = 39 MB/ sec
Anybody any idea to increase the speed of CardExport, there is still much room left ?
Thanks for that discussion!
Best,
Hugo

Most SW connecting to your PDA for file transfer do it through Activesync which as stated before is a bad bottleneck (its sloooow).
You are also using the file handling system of the PDA via this method and any number of background tasks will slow this down.
WM5torage (there is a thread running on here) gets around using Activesync so it may be worthwhile contacting the author to see if this will work for you or wether it could be modified for your purposes.
Hope this helps.

Read the specs carefully. It says "USB 2.0 Full Speed". Don't confuse Full Speed (12 Mbps) with High Speed (480 Mbps). What HTC is doing when they say this is commonly called "deception"!
Has anyone tried ActiveSync over Bluetooth to test whether the Kaiser supports EDR?

Ahhh, abu, you seem to be following me to flame!!
Let's just help people please???
EDR (Enhanced data rate) is fully implemented on this device as was not the case with the TyTn (Hermes) and you will find some of my old threads in there about this very subject that you have placed within this thread ( not whatsoever to do with the first post I may add!!)
OH flippin eck! the wine is taking over.

even usb harddisks max out at about 30MB/sec
and as pda's cant keep up with fast flash cards
it's silly to believe that pda's could keep up with
usb2 speeds

Rudegar said:
even usb harddisks max out at about 30MB/sec
and as pda's cant keep up with fast flash cards
it's silly to believe that pda's could keep up with
usb2 speeds
Click to expand...
Click to collapse
I love your sig file lol...

Hey good discussion,
I am a bit disappointed of the advertised 480 Mbit (ok in manual there is mentioned USB 2.0 full speed) but I can only see an advatage of 25% against my old Magician with USB 1.1. and even 12 Mbps (USB 2.0 full speed) should result in douple speed as the measured. I did not expect 480 Mbit, but a bit more speed, than currently offered.
Best,
Hugo

well chicks dig it
well some would be bound to somewhere somehow

Farsquidge said:
Ahhh, abu, you seem to be following me to flame!!
Let's just help people please???
Click to expand...
Click to collapse
Sorry Farsquidge, that my comment about video driver issues was spiced with a pinch of sarcasm. But here I am trying to be purely factual.
EDR is clearly mentioned as supported. I haven't tried this myself yet. But this will probably be slower than ActiveSync over USB as Bluetooth 2.0+EDR is 3 Mbps compared to Full Speed USB at 12 Mbps.
thehugonline said:
I am a bit disappointed of the advertised 480 Mbit (ok in manual there is mentioned USB 2.0 full speed) . . .
Click to expand...
Click to collapse
Note that they never advertised "480 Mbit". When they say Full Speed then that means 12 Mbps. That they throw in "USB 2.0" in front of this is IMO not entirely honest.

abubasim said:
Sorry Farsquidge, that my comment about video driver issues was spiced with a pinch of sarcasm. But here I am trying to be purely factual.
EDR is clearly mentioned as supported. I haven't tried this myself yet. But this will probably be slower than ActiveSync over USB as Bluetooth 2.0+EDR is 3 Mbps compared to Full Speed USB at 12 Mbps.
Note that they never advertised "480 Mbit". When they say Full Speed then that means 12 Mbps. That they throw in "USB 2.0" in front of this is IMO not entirely honest.
Click to expand...
Click to collapse
Yep, it could be taken as misleading.
I have never actually synced with BT as I only have my usb cable at work but I have just tried it and it seems much faster than cable connect. May just bring my charger from now on!

USB speeds are the maximum theoretical badwidth of the hardware, and are much highe than what can actually be achieved... Throw in ActiveSync, and USB speed is virtually meaningless...

Understood,
USB 2.0 was missunderstood as 480 Mbit by several (!) professional journals and websites testing mobiles and PDAs and -reading that- by me. Ok my mistake - next time I will directly come here and look for spec...
What I read in the threads above is:
"Mobile has USB 2.0, but do not expect 480 Mbit as it's only full speed, but don't be silly to believe to get real 12 Mbit as there is a big difference between hardware and spec. You really have to be satisfied, if you get real 6.5 Mbit, which is 25% faster than the USB 1.1 Magician."
In the end I am happy, not to get slower...
Thanks for discussion,
Best
Hugo

Insanely Slow Data Transfer over USB

hey guys,
ever since i got my tilt, data transfer over USB has been painfully slow. for example, a 900 mb tomtom map took over 2 hours to transfer. I tried taking the SD card out and putting it into my laptop. everything transferred in less than a minute, but as soon as i put the SD card back into my tilt, it turned out it was corrupted. i tried searching for a solution to this issue, but couldn't find anything.
halp

you say ever since you got your tilt does that mean that you had other and faster transfers on other pda's because in my exp thats the case with all wm devices

no, this is my first WM phone, and first PDA ever (i had an i870 before)

activesync is slow period, i use a mediacard reader,i highly recommend a storage card and is SDHC and a compatible card reader for your laptop/desktop,can also find cards on ebay with usb readers instead of card readers so you can just plug the card into the usb stick and away you go

unfortunately that's how the USB plug works on these phones. It's USB 1.1 only.

it's not just a usb1.1 issue as usb1.1 should be able to do 12MB/sec which is far from what happens in reallife

To give you an idea, I just did a quick and dirty test of the different transfer times.
RAR: 41.7 MB
Using Activesync:
- Copy to internal memory => 01:05
- Copy to SD Card => 01:20
Using Card Export:
- Copy to SD Card => 00:51 (mean transfer rate: 850 KB/sec)
Using USB Card Reader =>
- Copy to SD Card => 00:04 (mean transfer rate: 12500 KB/sec)
Conclusion: Always use an external card reader for transfering (large) files.

Tytn II has usb 2. Why the speed is so lame then?

The Kaiser is my first device, so I don't have any other devices to compare to. But in a large degree I have noticed the same for other mobile devices (like cameras, mp3-players,...)
It has to do with some factors:
- What app is used to transfer the data?
Working through Activesync to transfer data clearly works slower. That's because AS works as just another layer controlling the data transfer, thereby slowing the process. When you use Card Export, only the regular explorer.exe process is used for tranferring the data.
- Chipset limitations:
It might be that the Qualcomm chipset has a slow MicroSD and USB controller. Manufacturers also have to choose between better battery life or more speed. Mostly better battery life is chose, thereby bringing down the speed.

My old Dell Axim x50v used to sync calendar/appt within 5 secs. But my tilt takes atleast 1 min everytime to sync calender/appt. It takes that long before the sync icon stops spinning and states connected. Do you guys have the same problem?
btw, transfer speeds for data are the same between the two pdas. its just the sync time.

It is always painfully slow to transfer files with activesync, not just the Kaiser but with all PPCs. As far as sync with outlook that is really poor with WM6 and Activesync 4.5. I think I read somewhere the reason is that activesync runs very in depth checks on changes and date comparisons resultuing in long sync times.

my main problem is not that the tilt is soo slow, but why is my sd card getting corrupted EVERY time i put it in my computer? when i copy a decent size file, all the other files are fine, but that one explodes its size like 10x and takes up 90% of the card. my only option is to format every time

weakest link set the pace
if usb2 is supported then there most be a bottleneck
elsewhere
it imho seem to have been an issue with every pda ever

Big files transfer

Hello everyone,
I have a problem with mine Diamond.
When i try to transfer a Divx, so a file like 600 Mb, the trasfer get much slower at 50%, so that the transfer time increase rapidly from 15 minutes to hours. I tried to use even the active sync mode, than the Storage card mode with the same result. I have enought space on my internal storage, and i have had the some result with bouth 1 Gb of free memory and 3,5 Gb of free memory.
Is it an known bug? Is there a solution?
Thanks for your support and congratulation for the forum.

Noone else has this problem?

are you connecting the device to a USB 2.0 port? Because on USB 1.0 i would expect a 600mb file to take hours to copy.

I'm using USB 2.0 port. The problem is that until 50% the time is regular, just some minutes...than it get increased to hours...

The only other thing i can think of then is if you are using Vista by any chance it has been reported it has/had a problem with copying large files (not just with the Diamond, just in general)

Ok...we should have found the problem... I use vista.
So do you know if is there any solution?

I decided against running vista to be honest, but i did a quick search and found some information here: http://www.mydigitallife.info/2007/08/24/slow-file-and-folder-copy-move-transfer-or-delete-operation-speed-problem-in-vista-fix/
You can also read more if you simply type in 'slow copying on vista' into google. This is only a guess at what your problem could be though. I know that using USB 2.0 on XP transfers files for me very quickly (just wish i could get iGO to bloody work though when copied! )

I have a problem any high quality video files, such as DivX. Apparently there is supposed to be a version specific for the Diamond of The Core Media Player, don't know what's happening with it.

Thank for your help gary.bannister.
I have tryied the suggestion written in the website without success...
Thank you anyway.
I only hope it's not a problem of my device because i haven't heard noone else with this problem.
Bye

Ive had this same problem a few times, but ive noticed that if i plug the diamond in another usb slot then i get normal speeds.

Transfer ALL contacts/phonebook to other device?

Hi
I need to transfer all my contracts to my Bluetooth headset/handfree device.
I all have found is to transfer them one by one but that is an extremly slow process.
Does anyone know how to transfer them all?
//Kensy

[Q]Wifi speed can't reach 802.11n

I connect Galaxy Note to my 802.11n AP
But the connection speed only 65mbps
My desktop PC connection speed is 270~300mbps
Why Galaxy Note Wifi speed is so slow?

paladinlin said:
I connect Galaxy Note to my 802.11n AP
But the connection speed only 65mbps
My desktop PC connection speed is 270~300mbps
Why Galaxy Note Wifi speed is so slow?
Click to expand...
Click to collapse
You need to understand how 802.11n works. To achieve 300mbps speed, you will need 2-3 spatial antennas which can be found on modern laptops with Intel Wifi chipset (such as 6300). Our galaxy note has only one antenna (should be 1 for each radio band (a/n, b/g/n), but it is "N" compatible. So your speed is actually pretty good on a single antenna.

Unfortunately this is a case of the manufacturer misleading it's customers (tbh I would say out right lying to us).
As the above poster mentioned the note is compatible with N, however it can not support N speeds, as far as I have seen all phones that claim 802.11n are actually limited to 65mbps. So really are not 802.11n at all, rather just a little faster than 802.11g.
Although having said that unless you are transferring huge files across the network, streaming multiple FullHD streams at the same time, 65mbps is going to be sufficient.

its really misleading, i got upset when found out, also i have the impression that the battery drains faster on n without giving me any faster speed than on bg, maybe one day someone builds a phone with real fast wifi

felixjai said:
You need to understand how 802.11n works. To achieve 300mbps speed, you will need 2-3 spatial antennas which can be found on modern laptops with Intel Wifi chipset (such as 6300). Our galaxy note has only one antenna (should be 1 for each radio band (a/n, b/g/n), but it is "N" compatible. So your speed is actually pretty good on a single antenna.
Click to expand...
Click to collapse
For further detail on this issue I found this post helpful

I have the same issue with a Galaxy Tab 10.1
does anyone know if it is the same reason ?
how many antennas has is and what should be the max link speed ?

I have a wireless N router, and with my desktop (that's connected via wifi, I have 2, one wifi and one RJ45) I get 300 megs (connection speed) and when I connect via FTP From my phone to my desktop to download files or sync files, I get about 2.7 megs. I'm right next to the router (about 8 feet, clear sight) and the desktop to which I'm syncing is connected via LAN.

I also have this question about what need is for that on a phone. I can view HD videos from Youtube though my slow ADSL and the normal WiFi. You only need 1 - 1.5 Mbps for that.
Even if you were streaming 1080p with 5.1 channel sound, you don't need 100 Mbps.
thelestat said:
Although having said that unless you are transferring huge files across the network, streaming multiple FullHD streams at the same time, 65mbps is going to be sufficient.
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