please help with USB terminology

[sknab]

I was wondering if anyone knew what isochroous means when it come to USB terminology. I know it has something to do with tansfer rate......please help!!!

[GMAGDNA]

http://www.whatis.com/isochron.htm
or http://www.zdwebopedia.com/TERM/i/isochronous.html

There is a bit of help. Once again, try a good search engine and type in the "isochronous" and read through the results.

J

[Vernon Frazee]

"isochronous" means time-dependent. Pronounced eye-sock-ra-nuss, it
refers to processes where data must be delivered within certain time
constraints. For example, multimedia streams require an isochronous
transport mechanism to ensure that data is delivered as fast as it is
displayed and to ensure that the audio is synchronized with the video.

Isochronous can be contrasted with asynchronous, which refers to
processes in which data streams can be broken by random intervals, and
synchronous processes, in which data streams can be delivered only at
specific intervals. Isochronous service is not as rigid as synchronous
service, but not as lenient as asynchronous service.

Certain types of networks, such as ATM, are said to be isochronous
because they can guarantee a specified throughput. Likewise, new bus
architectures, such as IEEE 1394, support isochronous delivery.

[GMAGDNA]

That would be the exact text from the second site I have listed. Give the credit where it is due.