/i:-sok'rn-*s/ A form of data transmission that guarantees to provide a certain minimum data rate, as required for time-dependent data such as video or audio.
Isochronous transmission transmits asynchronous data over a synchronous data link so that individual characters are only separated by a whole number of bit-length intervals. This is in contrast to asynchronous transmission, in which the characters may be separated by arbitrary intervals, and with synchronous transmission.
asynchronous transfer mode and high performance serial bus can provide isochronous service.
[ANIXTER, LAN Magazine 7.93]