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[Q] USB-VGA Display Adapter Graphics Card works with android

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By leomg, Junior Member on 3rd May 2011, 05:55 PM
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hello, this is my first post, and i wish that somebody know if this adapter graphics card:
http ://www .dealextreme. com/p/usb-2-0-to-vga-display-adapter-cable-for-extra-monitor-screen-34756
http ://www .pandawill. com/usb-to-vga-usbvga-display-adapter-for-monitor-screen_p38476.html
or this
http ://www .amazon. com/Plugable-UGA-125-Multiple-Monitors-1280x1024/dp/B003IE49T8/ref=sr_1_3?ie=UTF8&qid=1304438526&sr=8-3

works in a device with android and usb host.
will be nice if i could connect any cellphone to a lcd tv or connect a tablet to two monitors.
3rd May 2011, 08:35 PM |#2  
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Quote:
Originally Posted by leomg

hello, this is my first post, and i wish that somebody know if this adapter graphics card:
http ://www .dealextreme. com/p/usb-2-0-to-vga-display-adapter-cable-for-extra-monitor-screen-34756
http ://www .pandawill. com/usb-to-vga-usbvga-display-adapter-for-monitor-screen_p38476.html
or this
http ://www .amazon. com/Plugable-UGA-125-Multiple-Monitors-1280x1024/dp/B003IE49T8/ref=sr_1_3?ie=UTF8&qid=1304438526&sr=8-3

works in a device with android and usb host.
will be nice if i could connect any cellphone to a lcd tv or connect a tablet to two monitors.

This depends solely on which phone you have.
Also try going to forum.xda-developers.com and scroll down to your particular phone and search thier general forum for it, mainly because chances are someone already has asked or talked about this
4th May 2011, 02:48 AM |#3  
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I don't think any Android phone will support USB to Video adapters. Some android phones have hdmi or video out capabilities. But those types of USB to Video adapters need special drivers which I don't believe are available for Android OS.
4th May 2011, 06:25 AM |#4  
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Quote:
Originally Posted by zarathustrax

I don't think any Android phone will support USB to Video adapters. Some android phones have hdmi or video out capabilities. But those types of USB to Video adapters need special drivers which I don't believe are available for Android OS.

I think that too, but there are drivers for linux and then android should make it work. I was just wondering if anyone tried.
6th May 2011, 01:36 AM |#5  
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here i found a list of the devices that are compatible with displaylink:
w w w.displaylink.com/shop/index.php?product=5

and in "download driver" are drivers for linux.
someone know if the driver for linux works for android ??

Pd: If a linux based router can: w w w.engadget.com/2009/05/18/displaylink-for-linux-turns-a-humble-wireless-router-into-a-beau/
why android cellphone or tablet cant.

also i found an app ($1,99) that allow to convert ipad screen into a new display for a computer through wireless, is there some app like that for android??
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6th May 2011, 09:28 PM |#6  
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Quote:
Originally Posted by leomg

here i found a list of the devices that are compatible with displaylink:
w w w.displaylink.com/shop/index.php?product=5

and in "download driver" are drivers for linux.
someone know if the driver for linux works for android ??

Pd: If a linux based router can: w w w.engadget.com/2009/05/18/displaylink-for-linux-turns-a-humble-wireless-router-into-a-beau/
why android cellphone or tablet cant.

also i found an app ($1,99) that allow to convert ipad screen into a new display for a computer through wireless, is there some app like that for android??

Android runs on top of a modified linux kernel, but it's not a true linux distro, so it can't run linux apps or drivers. Something would have to be written special. Maybe if you can run ubuntu off your device, you may be able to do something. What device do you have that has USB host?
Also, if its not USB 2, you may not have enough speeds to transfer. I think sending video output through usb would take a lot of processing power, which it may not be worthwhile with a phone.

What device do you have and exactly what are you trying to do... If I knew what you're trying to do, I might be able to help. I'm good with stuff like that.

You could maybe just get a DLNA adapter and wireless send video to a monitor or TV, instead. I'm not sure what you are exactly trying to get accompliched. give more details.
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7th May 2011, 12:04 AM |#7  
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I bought a SmartQ t10, that still doesnt arrive, I bought it for the screen and battery, then i saw this adapter, so im seeing if can get video out.

I found a mailing list where a guy with a motorola droid (who managed to switch to USB host mode) trying to do this.
w w w.mailinglistarchive.com/html/[email protected]/2010-07/msg00073.html

according to what I understood you should enable the auxiliary output video and change the driver to operate with mobile device processor.
8th May 2011, 04:39 PM |#8  
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here i found how to do it:
sites.google.com/site/voyageofbeagleboard/Home/displaylink-for-android

Code:
DisplayLink for android (latested version)
How to build displaylink driver for android

Displaylink is asic vender for USB-DISPLAY converter. It's is little slow, but expand your gadet example for android based equipment. So I modified the displaylink driver called udlfb for android.

How to build
- prepare android source code. I checked on beagleboard and android2.0
- extract and replace files with framework-core.tgz under framegework/base
- extract and replace files with kernel.tgz under kernel
- rebuild kernel and android

Description of tar archives
- framework-core.tgz
  Import mouse and touch features support from android-x86 project . This is depend on android2.0 eclair
  Touch features is following as:
    Touch the right corner on and off touch feature.
    [HOME] Touch the status bar
    [MENU] Touch the status bar from left to right
    [BACK]  Touch status bat from right to left 

- kernel.tgz
  udlfb driver for android. Original udlfb driver source code is in latest linux driver/stagine/udlfb
  Add double size frame buffer for pan_display
  Add pan_display function
  Make maximu resolution 1024x768. Original code support much more high resolution, but It cause crash under memory allocation.

Contents of tar archives
framework-core.tgz
==============================
Import usefule function from android-x86
  core/java/android/view/RawInputEvent.java
  include/ui/EventHub.h
  libs/ui/EventHub.cpp
  services/java/com/android/server/InputDevice.java
  services/java/com/android/server/KeyInputQueue.java
  services/java/com/android/server/WindowManagerService.java
  services/java/com/android/server/status/StatusBarView.java
  services/java/com/android/server/status/TouchFeature.java


kernel.tgz
==============================
touchscreeen driver depend my equipment.
  drivers/input/touchscreen/Kconfig
  drivers/input/touchscreen/usbtouchscreen.c

DisplayLink driver for android
  drivers/video/Kconfig     ->add configuration
  drivers/video/Makefile    ->add udlfb/Makefile
  dotconfig                     -> .config example
  drivers/video/udlfb/       -> driver
this will work??
8th May 2011, 08:09 PM |#9  
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If your phone does not have USB host mode you can modify your kernel to support it. Then it's a case of getting drivers, which may or may not be difficult.
9th May 2011, 03:22 PM |#10  
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Yes, i found that too, usb host for nexus one: sven.killig.de/android/N1/2.2/usb_host/
i guess that work for any device.

but I'm interested in that first run the driver already having a device with USB host, because is there more research about getting usb host or usb otg
30th June 2011, 10:18 PM |#11  
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Here is a android 1.6 driver from the opensource .
http://libdlo.freedesktop.org/wiki/

or
https://github.com/magoroku15/Displa...er-for-android

Any one know how to use it or update it to work on newer android ?
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