Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: running 3 A4Tech PK-760E webcams in the same time

08 Aug 2011   #1

Windows 7 Professional x64
running 3 A4Tech PK-760E webcams in the same time

I am currently working on a motion capture project and I need 3 webcams to work with in the same time. I have 3 identical A4Tech PK-760E webcams. All the webcams work perfectly. Any combinations of two in the same time work, but when i'm trying to start a third one I'm encountering problems.

I have tried a great range of software besides my application based on C# and AForge.Net and the result is the same: one of the 3 wecams fails to start(it's not necessarily the same one every time)
Each webcam is connected in a separate usb port.

I reckon it's a driver problem. Guys, please help me out. Thank you.

My System SpecsSystem Spec
11 Aug 2011   #2

Windows 7 Professional x64

This model uses 48% of the usb controller bandwidth. Also 10-20% are system reserved. I solved this issue by inserting each camera into usb ports from separate controllers. Worked like a charm. If the motherboard has too few or low-speed usb controllers one should install an expansion (pci /pciExpress) controller.

To see each controller's bandwidth go to Computer Management -> Universal Serial Bus controllers and right click on one
(or more) of the displayed controllers, click on the Advanced tab and one can see bandwidth-consuming devices.
My System SpecsSystem Spec

 running 3 A4Tech PK-760E webcams in the same time

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar help and support threads
Thread Forum
!SASCore service running all the time, not running Superantispyware?
Found the the above service was running all the time and I only occasionally use SuperSpyware AntiSpyware as a standalone scan. This is solely as backup check to my Antimalwarebytes Pro. May I stop and disable it, and how would I remove it entirely? Thanks Glenn
General Discussion
Two desktops running at the same time. Background programs running.
I noticed this issue a little while back. As I shutdown/restart my laptop, I notice it switches to a secondary desktop that has been running programs. A good example would be trying to open my Task Manager, I can Ctrl-Alt-Del and it will allow me to open Task Manager - however when I click on...
General Discussion
about my a4tech pocket usb
about my a4tech pocket usb when i plugged it to my toshiba satellite e1802 it read as generic usb but when i plugged my usb flash drive it doesnt read by my a4tech pocket usb hub pls help me with this?
Hardware & Devices
problems running webcams and java videos
anyone knows how to fix a problem running webcam videos and java aplications. Video comes out fuzzy. see picture attachment for example. help needed.
Graphic Cards
Windows 7 and Webcams
Greetings All, I am in the process of testing deployment of Windows 7 and Webcam functionality. I have so far tested 3 different webcams, Logitech c905, Logitech Webcam 9000, and a RocketFish webcam. All three exhibit the exact same problem. I attempted to test webcam functionality with...
Hardware & Devices
Webcam A4Tech PK-935!
i've tried to use the drive for windows vista at windows 7, but it just no works! i also tried to use the DriverMax, but it didn't worked please, can someone help me? i reeeeeeeealy don't wanna buy another webcam/change back to vista

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 04:11.

Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App