Multitouch: devices tracking more than two fingers ?

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Multitouch: devices tracking more than two fingers ?

Postby amundsen » Mon Apr 11, 2011 10:57 am

Hello,

I'd like to get information about the multitouch capabilites of tablets.

1. Which ones can track more than two fingers ? How many fingers can they track ?
2. Is there any one capable of tracking the surface of the fingers besides their position ?

Thank you in advance.
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Fri Apr 15, 2011 10:01 am

It seems that the Samsung Galaxy Tab and the Acer Iconia A500 can track 10 fingers (as well as the non-Android iPad of course).

The Android SDK includes size and pressure detection (it seems that the iOS SDK doesn't provide this information to developers).
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Fri Apr 15, 2011 10:11 am

The Motorola Xoom has an Atmel mXT1386 touch screen controller (32-bit) capable of registering up to 16 discrete touch points.
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Fri Apr 15, 2011 10:13 am

LG's G-Slate uses the same Atmel's mXT1386 controller, at least 10 fingers can be tracked simultaneously.
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Fri Apr 15, 2011 10:48 am

The Acer Iconia dual screen uses a Cypress controller, while the Galaxy Tab uses an Atmel controller.
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Fri Apr 15, 2011 10:59 am

The Acer Iconia Tab A500/A501 does also use an Atmel maXTouch controller, but I can't find which one.
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Fri Apr 15, 2011 12:10 pm

ExoPC Slate can track only two points.
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Mon Apr 18, 2011 2:59 pm

The Huawei IDEOS S7 Slim has a Synaptics ClearPad 7010 multitouch controller, so it's able to track up to 5 fingers with a 60 Hz rate (controllers 7020, 7100 and 7200 have a 80 Hz tracking rate).

http://www.synaptics.com/about/press/press-releases/huawei-chooses-synaptics-clearpad%E2%84%A2-7010-power-multi-touch-ideos-s7-slim-t

I am not sure this feature is available on all ClearPad controllers, but some of them do have a sense of pressure. See the demo of the ClearPad 7200 here : http://www.youtube.com/watch?v=unPgKox_noQ

Be careful with the "regular" IDEOS S7, it is said to have a resistive (non-multitouch) controller.
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Sun Dec 18, 2011 5:58 pm

Thanks to TechRepublic I could gather information about some additional models. The trend seems to be the arrival of newcomers in the market of screen controllers.

The Sony Tablet S uses three Cypress Semiconductor CY8CTMA3 touch screen controllers.
See http://www.techrepublic.com/photos/cracking-open-the-sony-tablet-s/6301055?seq=50

The Amazon Kindke Fire uses a ILITEK touchscreen controller (2107QS001K A95B9F695 A2135B010-20):
http://www.techrepublic.com/blog/itdojo/kindle-fire-teardown-no-frills-tablet-filled-with-ti-hardware/3056?tag=content;siu-container

The Acer Iconia TAB A100 uses three Cypress microcontrollers (CY8CTMA375 x2 + CY8CTMA395 x1)
http://www.techrepublic.com/blog/itdojo/acer-iconia-tab-a100-teardown-lots-of-tech-crammed-into-7-case/3028

The older A500 uses controllers from Atmel: 1 x mXT1386 + 3 x mXT154:
http://www.techrepublic.com/blog/itdojo/acer-iconia-tab-teardown-easy-to-service-3g-ready/2861?tag=content;siu-container

I am wondering why they switched from Atmel to Cypress between the A500 and the A100.

Let's see how it is with the Samsung GalaxyTab 8.9. The controller does also come from an outsider: the korean Melfas. It's a MCS-8000 Series (8BK120-1123) (x2)
http://www.techrepublic.com/blog/itdojo/samsung-galaxy-tab-89-teardown-unmarked-processor-replaceable-battery/3038?tag=content;siu-container

The Nook Color from Barnes & Noble has a controller from another unknow company: FocalTech Systems. It's a FT5406 (FT5406EE8 ERE40BD K01)
http://www.techrepublic.com/blog/itdojo/samsung-galaxy-tab-89-teardown-unmarked-processor-replaceable-battery/3038?tag=content;siu-container

The HTC Flyer, which has a stylus, uses a N-trig DuoSense integrated pen and multi-touch solution.
http://www.techrepublic.com/blog/itdojo/htc-flyer-teardown-a-smartphone-in-tablets-clothing/2736

The Toshiba Thrive has a processor from EETI (EX5404 Projected Capacitive Touch Controller IC Solution - EX5404 1026-EG41)
http://www.techrepublic.com/blog/itdojo/toshiba-thrive-teardown-most-laptop-like-android-tablet/2775

The ASUS EEE Pad Transformer (TF101) sticks to Atmel with one mXT1386 and three mXT154 (same choice as in Iconia Tab A500).
http://www.techrepublic.com/blog/itdojo/asus-eee-pad-transformer-teardown-convoluted-but-3g-ready-internal-design/2833?tag=content;siu-container
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Sun Dec 18, 2011 6:10 pm

What about the Asus Transformer Prime ?
According to another teardown, it's still Atmel-powered (MXT768E - see picture #6):
http://www.wirelessgoodness.com/2011/11/02/asus-transformer-prime-gets-torn-down-kal-el-pictured/
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Re: Multitouch: devices tracking more than two fingers ?

Postby amundsen » Sun Dec 18, 2011 8:28 pm

Now the pages of some controllers:
EETI EX5404: http://home.eeti.com.tw/web20/eg/EX5404.html (up to 54 channels)

Melfas: http://www.melfas.com/touch/sensor.asp

The Atmel MXT768E is a 32-bits controller, allowing to use only one chip for screens up to 12 inches. It is supposed to admit up to 16 simultaneous touches. It has a resolution of 24 x 32 (768 channels)
http://www.atmel.com/microsite/maxtouch_eseries/mxt768e.asp

The mXT540E offers 18 x 30 = 540 nodes/channels.

I can't find information about the Ilitek chip (2107QS001K A95B9F695 A2135B010-20). The taiwanese company's website is http://www.ilitek.com.

FocalTech Systems FT5406 (PDF file): http://www.focaltech-systems.com/Upload/products/downloadfile/FT5x06Datasheet_FocalTech-10440789024.pdf (28 x 16 nodes ?)
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Re: Multitouch: devices tracking more than two fingers ?

Postby asimmittal » Thu Dec 29, 2011 1:12 am

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Re: Multitouch: devices tracking more than two fingers ?

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Re: Multitouch: devices tracking more than two fingers ?

Postby anniedulce » Fri Apr 06, 2012 12:59 pm

This is amazing to see at a time moving the mutely fingers on screen.
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