A data communication system, such as a local area network, is provided with a capability of transmitting isochronous data. Preferably the system conveys both isochronous data and non-isochronous data by time-multiplexing the data into a recurring frame structure on a four-bit nibble basis. Bandwidth...http://www.google.com/patents/US5544324?utm_source=gb-gplus-sharePatent US5544324 - Network for transmitting isochronous-source data using a frame structure with variable number of time slots to compensate for timing variance between reference clock and data rate
