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Re: Maximum USB



First public version will be a small client with a mediaplayer frame inside and a listbox with all the available source at the encoder.
You will be able to remotely select one of (let's say) 4 USB connected webcams.
The list will be loaded at startup with all the available source (can be audio, video or AV).
In this moment I have 3 USB webcams (with mic included) and the AV receiver output connected to a Pinnacle Lynx USB AV cable (again with his own mic).
 
In that way, I can use the system not only for surveillance purpose, but even to remotely select one of the home entertainment system AV sources (vcr, sat, TV, DVD) using Infrared Remote Manager.
Even when I am abroad, I can see my favourite radio/tv program using Windows Media streaming.
 
Sounds interesting for you?
 
BR,
Dan
 
 
 
----- Original Message -----
From: Amar Nagi
Sent: Tuesday, September 10, 2002 5:45 PM
Subject: RE: [ukha_d] Maximum USB

sounds interesting dan
look forward to seeing it


      -----Original Message-----
      From: Dan [mailto:dtoma@xxxxxxx]
      Sent: Tue 10/09/2002 15:25
      To: ukha_d@xxxxxxx
      Cc:
      Subject: Re: [ukha_d] Maximum USB
     
     
      Hi,
     
      I make some tests. Theoretical limit is 5m per segment for  a maximum of 5 segments.
      Practically, using STP cable I get reliable connection even at 10m. It is possible to get even more.
      You can use the 8 wire like that:
      - 4 for the standard usb pins
      - 2 for power supply GND
      - 2 for  +5V for the powered hub.
      Take care that it is possible not to be able to use 2 webcams on the same USB hub. Usually, one cam request aprox. 75% of the bandwidth.
     
     
      BR,
      Dan
     
      P.S. This is what I use in this moment.
      I will post in a couple of days, on my site (http://www.geocities.com/tdanro) a small application to select one of the AV source connected to a Windows Media Encoder remotely, when not home.
      Is very usefull for surveillance purpose.

            ----- Original Message -----
            From: Amar Nagi <mailto:groups@xxxxxxx> 
            To: ukha_d@xxxxxxx
            Sent: Tuesday, September 10, 2002 5:18 PM
            Subject: [ukha_d] Maximum USB
           
           
            What is the maximum length usb lead i can have
            between powered hubs. I want
            to set up some webcam  security.
           
           
           
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