Things you don't know about the EPFX-usb
- taken from an interview with Prof. William Nelson
Okay so we all know the usual wonderful things about the EPFX-usb… We took some EXTRA time with Prof. Nelson and this is what we found out.
Prof. Nelson, what was the biggest challenge in developing the EPFX-usb?
Probably the biggest challenge was going from the old style parallel ports and then converting to serial ports. This was the biggest technical challenge. Did you know that with the EPFX-usb we are quadrupling the data? This means that there is now four times as much data going both in and out BUT we now have less pins!
Prof. Nelson, what is the big deal with the serial to USB vs USB to USB?
Ha! Good question… To answer this question you need to have a basic understanding of computers. You hear of the latest computer processors being 1.8 GHz etc. Simply put this means that the computer has the ability to process over 180 million bits of data each and every second! We all know a USB offers faster data transmission than a serial so why create a funnel type effect? Well even the advanced EPFX-usb can only process 250,000 bits of data every second so even the serial port is more than capable of handling the data transmission. If we have 64 different contact points with the body then we would need a USB to USB connection but we are very far away from that.
Why do the lights not stay on with the EPFX-usb biofeedback sessions?
As a general rule you need to turn the EPFX-serial on first and be running piggyback EPFX-usb body viewer programs. From body viewer you can turn the EPFX-usb both on and off. Remember everything you do inside the EPFX-serial will set the stage for the EPFX-usb!
|
