Posted by jh67
As the bluetooth devices seems to be more and more common,..I guess it would be a good idea to tell a bit more about it
And also this will probably help newcomers in Bluetooth to understand it a bit better
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Bluetooth Chipset consists of :
radio
baseband controller
flash memory
crystal reference regulator
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OPERATES WITHIN : 2.4 to 2.8 GHz Industrial Science Medical Band (ISM).
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RF-OUTPUT: Spread spectrum, full duplex signal that hops among 79 frequencies at 1 MHz intervals, at up to 1600 hops pr.second to avoid interference.
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POWER-REQUIREMENTS: Standbymode: 0.3mA.
during data transfer: 30mA.
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CONNECTING SPEED: up to 1 Mbit/s.
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Bluetooth versions : 1.0 og 1.1.
Version 1.1 : built-in interoperability with wap, particularly on the server side. All devices should be able to reconize and transmit client and server details with wap-gateways.
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Bluetooth version: 1.2
This version is backward compatible with 1.1 and the major enhancements include the following:
- Faster Connection and Discovery
- Adaptive frequency-hopping spread spectrum (AFH), which improves resistance to radio frequency interference by avoiding the use of crowded frequencies in the hopping sequence.
- Higher transmission speeds in practice, up to 721 kbit/s, than in 1.1.
- Extended Synchronous Connections (eSCO), which improve voice quality of audio links by allowing retransmissions of corrupted packets, and may optionally increase audio latency to provide better support for concurrent data transfer.
- Host Controller Interface (HCI) support for three-wire UART.
- Ratified as IEEE Standard 802.15.1-2005.
- Introduced Flow Control and Retransmission Modes for L2CAP.
Bluetooth version: 2.0
Bluetooth version 2.0 + EDR delivers data transfer rates up to three times faster than the original Bluetooth specification. Bluetooth version 2.0 + EDR also provides enhanced multiple-connectivity. With Bluetooth 2.0 + EDR, users will be able to more efficiently run multiple Bluetooth devices at the same time. As a result, Bluetooth Personal-Area Networks (PAN) or Piconets will become more common.
Here is a listing of the main enhancements/features you will find with Bluetooth Specification Version 2.0 + EDR:
- Backward compatible with previous Bluetooth versions
- Three times faster transmission speed (10 times in some cases)
- Enhanced data rate of up to 3 Mbps
- Lower power consumption due to reduced duty cycles
- Broadcast/multicast support
- Simplification of multi-link scenarios due to more available bandwidth
- Distributed media-access control protocols
- Further improved Bit Error Rate performance
Car companies like Ford are working with IBM, developing "in-car" bluetooth applications...e.g. voice-activated email functions.
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Bluetooth and WI-FI (IEEE 802.11b) are both using 2.4 GHz frequencies.
Some see them as compeditors,..but really, they are not that.
Bluetooth is PAN (personal Area Network).
And designed for connecting devices, for synchronization and data transfer.
Its not designed for connecting to a network, meaning Bluetooth is WHAT you connect to,..not HOW you connect.
Unless of course, bluetooth replaces cables/IR between phone and laptop/pda.
Then it could get you online or into a network.
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BLUETOOTH PROFILES AND PHONES :
There're 14 different bluetooth-profiles, that are approved by Bluetooth Special Interest Group (SIG).
Most bluetooth-devices will support only 1 or 2 profiles.
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A bluetooth phone have an audio-profile for headset, and a data-profile for connecting to e.g. pda/laptop.
The bluetooth-headset usually have one profile- the audio.
BUT when headsets are upgradeable with new software, new profiles can be added.
E.G. : Listening to Streaming Digital Media.
Others could push alerts and relevant information to e.g. pda, or automatically exchange businesscards, without exposing other files.
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Hope this will help in some way, to understand more about how Bluetooth works.
Jan
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[ This Message was edited by: laffen on 2004-10-28 13:45 ]
[ This Message was edited by: tranced on 2009-06-23 04:19 ]
Posted by arroyootje
Thanks again Jan!
Posted by jh67
arroyootje : your welcome
Jan
Posted by all8
Any idea where the bluetooth antennas mounted in both HBH-10 and T68?
Each time I point the screen of t68 with the body of HBH-10, I can get good connection???
Posted by cruiser91
What I would like to know is if the bluetooth chipset has its own little antenna inside, or does it make use of the phone's aerial?
Dying of curiousity here.
Posted by jh67
On the HBH-10 the antenna is in the black front-piece with the ericsson logo (the black piece that points forward), that sticks out.
In some bluetooth-devices the antenna is internal, like e.g. the bluespoon-headset or the anycom bluetooth card.
In the Anycom bluetooth card the blue outer part of the card holds the antenna. This part is out in the open, when the card is inserted into the laptop.
Jan
Posted by jh67
The bluetooth module itself, consists of the following :
radio module (13 Mhz xstal)
Vreg
flash memory
voice codec. this is optional.
The baseband link management and control consists of :
microcontroller core
Sram
bluetooth core
Uart,pcm usb interfaces.
This is the bluetooth chipset.
I know this is "tech-stuff", but should give a pretty good idea, of whats inside
Jan
Posted by cruiser91
So where is the bluetooth antenna in the T39m?
Does it have its own little secret internal antenna or does it make use of the phone's antenna?
Hope it is the phone's antenna.......
Posted by orang3
how about the HBH 15 ?
Posted by tobi
could i use a bluetooth pc card to download background pictures...
Posted by orang3
can you use the voice command 'answer' like the normal handsfree ?? how come i cant answer the call when i say ans ?? but i already set the voice ans command on ??and when i use voice dail they always cannot regonise the second part when they ask me where to dial to ect (home,office,others) i also set the voice command for those ....
Posted by tcp/ip
hi jan!! u forgot to tell about the atm n* 64 voice codec !! wich it also is capable off!!
Posted by jh67
Tobi >
Yes you can use bluetooth pc/cf cards to transfer images. Not all bluetooth cards have the ability to do this right now. But basically all the cards are upgradable, so this specific profile could be added.
All bluetooth cards have filetransfer programs, but not all work with a phone. They are meant for pc to pc or pda transfers.
Orang >
You're trying to use Magic word,..that doesnt work with bluetooth headsets (only works on wired headsets). Normal voice-controls works as You already know.
With bluetooth headsets you have to push a button, e.g. voice-dialling/recieving calls.
TCP > hehe,..ok, I did write about voice codec further down, and its optional. The reason I didnt tell "too much" is that this short introduction is not only for headsets, but for Bluetooth itself
This whole explanation was basically meant as a short introduction, mainly to those that know little/nothing about Bluetooth.
It could have been even more technical, but I also wanted to keep it down to basics
Someone asked earlier about the antenna on the headsets,..it sits on the HBH-15, on the outside,..in the lightgrey part (the part that sticks a bit out).
On other bluetooth headsets they are build-in, usually in the top-part of the headset itself, away from e.g. microphone.
Jan
[ This Message was edited by: jh67 on 2002-04-21 19:29 ]
Posted by orang3
ohh ok .. thks ..
Posted by drad
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So, where's the software for the PC-to-T39/T68?
Posted by jh67
Software comes with the cards. It could be the FileTransfer program.
It depends on the bluetooth-profiles in the card itself, as I wrote earlier. If the card does not support filetransfer to mobile device, then you cannot do it.
If the bluetooth card have the ability to send pictures and melodies to the phone,...then you wont need any specific software in some cases.
It will work the same way as IR does,...meaning that when you have established a connection between phone and card/laptop,..then you could rightclick image, and send "via bluetooth", just as you can do when using IR.
In other cases,..you will be able to send images and so on,..by using the bluetooth-menu program that came with the card.
When You establish a connection,..there will be some sort of pop-up-box/bluetooth-menu, where options are listed (in the same way IR works, once you connect).
E.g. 3Com cards support transfer of e.g. pictures, melodies.
Anycom at the current moment doesnt.
Jan
Posted by eweiwei
Why does people name this stuff bluetooth? why not redtooth? greentooth? or may be yellowtooth?
Posted by all8
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The Bluetooth name comes from the Danish king Harald Bluetooth who unified Denmark and Norway in the 10th century.
To find out more check out
http://www.ericsson.com/bluetooth/companyove/history-bl/
Milestones in the Bluetooth advance
* 1994. Ericsson launches an initiative to study a low-power, low-cost radio interface between mobile phones and their accessories.
* 1997. Ericsson approaches several manufacturers of portable electronic devices to discuss the development and promotion of the short-range wireless technology.
* 1998. Ericsson, IBM, Intel, Nokia and Toshiba form the Bluetooth Special Interest Group (SIG).
* 1999. Release of the open Bluetooth Specification version 1.0.
* 2000. The Bluetooth SIG is now run by 9 promoter companies, the original 5 founder companies plus 3COM, Lucent Technologies, Microsoft and Motorola.
* The first certified Bluetooth products on the market.
* Bluetooth SIG membership passes 2000.
* The development of next-generation technology and Bluetooth Specification 2.0 is well advanced
* Bluetooth wireless technology is now the fastest growing de facto communication standard ever.
[ This Message was edited by: all8 on 2002-04-23 18:02 ]
Posted by jh67
eweiwei > Hehe,..yes its actually named after the danish viking-king Harald Blåtand (bluetooth).
Another reason why its called bluetooth is the fact that the module/chipset is blue
Actually the first ones were blue, I dont know if that is still the same today.
And because Harald Bluetooth unified/brought together the countries, bluetooth should work in the same way : Bringing people close !
jan
Posted by orang3
intresting ..
Posted by Jimak
jh67: That was a joke, was it? I saw 4 different baseband chipsets (CSR, Philips, Nokia and Ericsson) and none is blue - they are black or silver.
The truth is, that Philips comes on a blue-dyed PCB ...
Posted by Jimak
There is confusion between the file transfer and object push.
T68 has only object push - because it has no real filesystem.
Notebooks have the file transfer (besides the push).
The Bluetooth products I have tried so far are all the same - only their "Windows SW" limits the features. If you use them e.g. under Linux you get the same features from all of them. That goes for 3COM, Nokia DTL1, Nokia DTL4, CSR based products, etc. The radio chipset can handle anything, but the software must support it.
Posted by tcp/ip
>jan< hehe oki sorry det havde jeg ikke set !! men din beskrivelse er nice "down to earth" og nem at forstå selvom man ikke aner en klyde om blåtand`s teknik.. mvh
Posted by jh67
Jimak > No, it wasnt a joke. One of the first times I saw a bluetooth chipset,..it was blue
But then again, it was "commercial",..and I know that today the chipsets are either black or met.silver
Yes the phone does have object push,...and some bluetooth-cards have this too.
I know too that "fileTransfer" is not the same. It is also stated in e.g. the Anycom cards manual, that FileTransfer is for pc-use, and not phone-use.
From what I read, the "Object push-profile" could very well be in all bluetooth-cards in the future. Today they are not.
Reason is,..the bluetooth-cards are not only targeted for mobile-phone-users, but also very much pc-users, that will use a combination of a mobile-phone (synchronization, DUN/LAN-modem) and e.g. a laptop/pda.
There're a lot of bluetooth-profiles,..but they cant all be put into one card. The bluetooth-card manufacturers will put the profiles, they believe are most useful/versatile, into the cards.
And therefore the profiles in the cards will be a mix of "phone-usable-profiles" and "PC-usable-profiles".
In the future we will see cards with more profiles, and probably cards that will be more "mobile-phone-targeted".
When you pay a lot of money for a card,..then you really want it to be versatile. You want to be able to use it with a lot of different devices,..and it should have a lot of different options/features.
At the moment its still a bit limited,..but it'll change in the future
Jan
Posted by jh67
TCP > hehe,..den skulle også være "down to earth",..de skal helst ikke blive helt rundtosset, inden de overhovedet lærer det at kende
Sorry for the danish (no real info in that sentence, just an answer)
Jan
Posted by titanic
I have one question. Why is the T68i only qualified for spec v1.0b even though spec v1.1 has been out for a long time? Does it mean that my T68i will have interoperability problems with other v1.1 Bluetooth devices?
Posted by Jimak
to titanic:
I guess no problem. I have T68m running agains a bunch of BT 1.1 devices and didn't find even smallest glitch so far.
to jan:
Getting that "Object push" is just matter of software. Unless the card manufacturer did something very very very weird.
For sure Nokia's DTL1 and DTL4, 3COMs USB and all other CSR based products I saw work just fine under Linux, even though their "original Windoze software" doesn't.
Posted by Jimak
to jan 2:
BTW, we have the "headset" profile almost running between two notebooks - just as an example that the bluetooth module can do anything, all depends on the software (drivers).
Why would one implement the printer or headsed profile in a notebook? There is no use-case for it (do you want to listen to the notebook's speakers when you pick up the call?) and therefore the software you get with such module doesn't support it.
Posted by jh67
Well, one bluetooth-card have the headset profile (audio) right now.
Personally I cant find any reason for an audio profile in a laptop either,..not much need for this. But there might come some options with bluetooth v2 later on. Or actually I know that there will be.
The printer-software/"profile" according to me is more useful on laptops. The Anycom-card have this option, although its not a fully developed bluetooth product yet. Its Anycom's own version right now.
Jan
Posted by jh67
Titanic >
The bluetooth v1.1. are backwards compatible,..so there's no problems with "older" bluetooth versions.
A good example is the Bluespoon, its v.1.1, and it works great with e.g. T-39, T68 and so on
Jimak >
I know too that a lot depends on the software. Thats why I also wrote that more features could be put into the card, once upgraded,..e.g. new drivers/software.
BTW : the Anycom card is v.1.0., thats the card I got
And according to Anycom, it doesnt support the object push (from/to phone). At least not at the current moment.
Jan
Posted by schnippy
What software can I use to sync outlook with my T68? I have the 3com card and the software really sucks
Posted by jh67
Well you have to use a synchronization-software,...the XTND-Connect.
You can read more about it here : (also direct links to download)
http://esato.com/board/viewtopic.php?topic=3497&forum=17&7
Heres a set-up to 3com bluetooth devices and synchronization :
http://www.yiapap.com/
Go to > "Bluetooth Blues"
Jan
Posted by dw
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I had the exact same prob. as this dude and following his
'tutorial' on how to make it work did the trick for me
now I can do everything except sending pictures and sound
from the phone to the PC. BT software do not seem to
listen on incoming objects and tmk there is no way of making it.
Posted by jh67
DW > My Anycom card doesnt support that part either of transferring pictures and melodies to the phone.
At least not at the current moment. Might be possible later on, according to Anycom.
Anycom's got a pretty good forum, where You can find out about a lot of stuff,..I use it quite a bit. Also found a complete set-up on XTND-connect and T68.
http://discuss.pocketnow.com/forumdisplay.php?s=&forumid=84
Jan
Posted by dw
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I can send pictures&melodies TO the phone using 3com usb
everything works except sending them FROM the phone to the PC.
A possible solution would be if the phonebackup program was updated to backup your picture album and melodies. Another to make a filerecive program? If the coder of the cristersson programs read this forum perhaps he has some insight.
Posted by jh67
DW > Mikael Christersson is on the forum
I'm waiting for Anycom to come up with a solution/software on this too.
Jan
Posted by gullak
Nice to learn a little
Posted by jh67
GULLAK > Ja, man skulle jo gerne blive ældre med alderen,..øhh klogere *G*
Jan
Posted by Wings_Talons
Jan,
The bluetooth to avoid interference fluctuates 1600 times per second. Now when it switches frequencies, is there a set pattern in which it does this.. or does it do randomly? If it does randomly then how does it synchronize with the other bluetooth gadget which it is trying to connect and send the data to? What is the time lag, if any, in the communication between two BT items?
Is there a BT discussion forum that you know... like this SE Esato forum? Cheers buddy!
Posted by iriequicksigns
Is there anything that can be done to increase the range of the bluetooth devices that is similar to the homebrew Pringles can antenna that works on 802.11 ?
Posted by Jimak
Get external antenna for Bluetooth - I guess Toshiba has one for up to 50 metres ...
I have personally seen two notebooks sending data at distance of almost 30 metres with standard Nokia BT cards (DTL-4 prototypes). This depends much on the interference.
[ This Message was edited by: laffen on 2002-05-29 08:49 ]
Posted by StoneRoses
I used Socket Bluetooth CF Card (mainly for my iPAQ) with my Win-XP laptop (you need CF->PCMCIA Adaptor to do that). The card comes with Windows Driver and Software from DigiAnswer.
Socket BT Card and DigiAnswer BT Software Suite support OBEX Object Push so I can use it for sending background image and ringtone to T68, simply by drag and drop the files (.gif or .emy .imy) to the t68 icon in BT neighberhood.
Posted by Cr33pingD34th
I have my 3Com pcmcia bluetooth card in stalled on my Dell Laptop, running WinXP, I followed the Tut on yiapp. If have it working fine for outlook sync and file transfer. But i cannot set up a Dial up connection. I have installed the Modem, using the 3com install program. But the laptop cannot find the modem... Any tutorials out there for setting up dial up connections as i have tried following the 3com help, and it doesnt work....
please help
Posted by GOwin
I was just reading about Bluetooth Profiles when two particular profiles piqued my interest.
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K3: Cordless Telephony Profile |
what do you think of those two? very interesting e?
when do you think would mobile phone manufacturers put them in their phones?
Posted by arnoldc
Jan, your wait is over. version 2.0 of anycom software is available on their website. just download and installed it last night. problem solved.
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Posted by arnoldc
Jan, anycom ate their words. this is not true as I have version 1.0 card also and with 2.0 software it has object push. maybe they want us to buy newer cards, and hell no i'm not going to
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Posted by GOwin
Just a quickie: can manufacturers add support to other profiles by upgrading or flashing the device firmware?
Posted by arnoldc
@gowin, the limitation is the chipset. if the chipset supports it, then it's just a matter of software 'exposing' the capability just like what anycom did.
Posted by GOwin
thanks for the info arnold.
Posted by EddWo
I know there are lots of bluetooth adaptors for printers and HP Deskjet 995 has it built in etc. but is it or will it ever be possible for a PC to host a printer and provide the bluetooth printing profile throught a usb or pcmcia adaptor?
It seem like this is the best way to go, as it requires the least additional expenditure for those who already have adequate printers.
I got the Tecom usb adaptor this morning and have a T68i, connecting them goes fine, but I think being able to use the print feature straight from the phone would be a nice additional touch
Edward