Bluetooth support for 2011 3D glasses

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sbav1
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Re: Bluetooth support for 2011 3D glasses

Post by sbav1 » Sat Oct 01, 2011 11:39 am

abbynormal wrote: It's not using bluetooth but another protocol working at 2.4gHz named ZigBee
Really? I'd like to see some evidence for that statement..
From what we know, ALL (commercially available) D-series 3D glasses are Bluetooth controlled.

ZigBee is (or perhaps was) used for fancy (RF) remotes, in high-end/flagship B/C models.
Is it able to interact with some kinds of shutter-glasses for D-series ??? I kinda doubt it..

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erdem_ua
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Re: Bluetooth support for 2011 3D glasses

Post by erdem_ua » Sun Oct 02, 2011 12:16 am

It doesn't find my phone too since I don't set it as visible.
And I think TV is passive device. When you press button at glass, than TV detect your glass.
It means glass search the TV's network for me.

chirkoot1
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Re: Bluetooth support for 2011 3D glasses

Post by chirkoot1 » Sun Oct 02, 2011 4:10 am

How to verify which core my bluetooth dongle is?

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erdem_ua
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Re: Bluetooth support for 2011 3D glasses

Post by erdem_ua » Sun Oct 02, 2011 6:42 pm

Code: Select all

 # hciconfig hci0 revision
hci0:	Type: BR/EDR  Bus: USB
	BD Address: 00:10:60:AB:AE:0E  ACL MTU: 192:8  SCO MTU: 64:8
	HCI 16.14
	Chip version: BlueCore02-External
	Max key size: 56 bit
	SCO mapping:  HCI
Unfortunately mine one BlueCore2
Other dongle even doesn't show it's revision

Code: Select all

# hciconfig hci1 revision
Can't read version info for hci1: Connection timed out (110)

chirkoot1
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Re: Bluetooth support for 2011 3D glasses

Post by chirkoot1 » Mon Oct 03, 2011 3:06 am

I checked online but dont find any dongle with Version 4 compliance. Any suggestions?

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erdem_ua
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Re: Bluetooth support for 2011 3D glasses

Post by erdem_ua » Mon Oct 03, 2011 6:08 am

abbynormal wrote:That's what I thought, but I can't see the TV nor the glasses doing a bluetooth scan... that's why I thought it used zigbee.
Hey look, thinking is different than talking exactly. First one give ideas. Second one misdirect..


I attaching a shot:
sgg-3500-BCMchip.jpg
This glasses uses BCM20730 Bluetooth 3.0 chip. I can't see any other chip (can't remove the plastic shield due cracking risk).
Bluetooth 3.0 is normal since this devices needed to save power. Bluetooth 3.0 has "Enhanced Power Control". But this probably means BT 2.0 sniffers doesn't work for capturing packets from this device. Or do they?
And unfortunately. there is no BT 3.0 eavesdropper. Or there is?

Also BT 3.0 features
Unicast connectionless data
Permits service data to be sent without establishing an explicit L2CAP channel. It is intended for use by applications that require low latency between user action and reconnection/transmission of data. This is only appropriate for small amounts of data.
I bet this goggles using this protocol.

When I connect glasses to PC's USB port, gives

Code: Select all

[302994.803057] usb 4-2: new full speed USB device number 98 using ohci_hcd
[302995.206138] usb 4-2: device not accepting address 98, error -62
[302995.206223] hub 4-0:1.0: unable to enumerate USB device on port 2
Means no go...

Anyway, I don't have any BT 3.0 device. It's selling from ~$5 at ebay...
We could also eavesdrop BT device at TV with cheap hardware.
You do not have the required permissions to view the files attached to this post.

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erdem_ua
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Re: Bluetooth support for 2011 3D glasses

Post by erdem_ua » Mon Oct 03, 2011 6:25 am

Interestingly, one Chinese corporation, Gonbes Technology, able to replicate Samsung 3D Bluetooth Glasses here.
This make me thinking if there is a standard for this 3d glass synchronization at BT 3.0 protocol... Needed to research on it..

chirkoot1
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Re: Bluetooth support for 2011 3D glasses

Post by chirkoot1 » Wed Oct 05, 2011 2:22 am

Any possibility to find standard used in 3d glasses to understand how to make bluetooth dongle work?

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