History:
– In 1984, EIA members identified the need for standards beyond X10.
– Over 6 years, engineers developed the CEBus standard released in 1992.
– CEBus allows communication through various mediums like power line wire, infrared, and RF.
– The standard was built on a GE-developed IR protocol.
– CEBus has open architecture specifications for different communication methods.
Technology:
– Spread spectrum modulation is used on the power line in CEBus.
– CEBus power line standard varies frequencies to encode data.
– CEBus transmissions can be of varying lengths, with a minimum of 64 bits.
– Other supported media include coaxial cable, infrared, RF, and fiber optics.
– CEBus device addresses are pre-set at the factory with 4 billion possibilities.
Manufacturers:
– Intellon and Domosys produce CEBus chips for manufacturers.
– The CEBus trademark is owned by the EIA.
– The CIC, a non-profit organization, oversees ongoing developments.
– Manufacturers can use a testing laboratory for CEBus certification.
– The CIC includes representatives from major electronics firms like Microsoft and IBM.
Common Application Language:
– CAL contexts in CEBus include control and operation tables.
– CAL contexts allow automatic discovery of product capabilities.
– The CEBus standard stack includes HPnP, CAL contexts, and EIA-600.
– Companies like Amp, Honeywell, and Intel worked on HPnP in 1996.
– Technologies like 1394, IRDA, and UPnP developed in parallel with HPnP.
See also:
– EIA and C-Bus are related protocols in the industry.
– Resources for CEBus information are available in books and publications.
CEBus(r), short for Consumer Electronics Bus, also known as EIA-600, is a set of electrical standards and communication protocols for electronic devices to transmit commands and data. It is suitable for devices in households and offices to use, and might be useful for utility interface and light industrial applications.
