Isochronous

Isochronous ( from the Greek iso = equal chronos = time)

• The name of equal length lasting periods of time. In the art which is a signal with a constant period.

• The status of a technical system, especially a network or other transmission system defined tasks to be performed within a well-defined period of time. Isochronous telecommunications networks can transfer error-free with constant data rate.

Isochronous transfer

In this type of transmission is always a fixed number of steps between any two feature points. The time interval between two transmitted bits is always equal. Temporal variations that are referred to as jitter, ideally not exist. In practice they have to be limited.

Since working in practice with constant clock signals, all transmission types at least within a " hierarchy block " isochron. Example: Known as the asynchronous RS232 serial port asynchronously sends bytes, so at any one time - the start, data and stop bits are sent but isochronous.

The term is still used in isochronous transmission art in a slightly different meaning: here is meant to mean that a certain minimum data rate is guaranteed (eg Firewire, USB, ...). This is an example for multimedia ( video on demand, etc.) or real-time applications (air traffic control, etc. ) is important.