CEBUs

• home audio-visual (like HAVi)
• lighting systems
• in general: switches, sensors, motors, analogue/digital controllers, meters, memory, clocks
• CEBus has a potentially wider range of devices than HAVi

CEBus transport

• Consumer Electronic Bus is for device communication over
  • power cables
  • coaxial cable
  • twisted pair
  • infrared
  • fiber-optic (eventually)
• CEBus power line sends 100-400kHZ bursts lasting 1 microsecond
• Data rate is max 10kbps
• Packet size is variable, 64 bits minimum

CALS

• CEBus uses an O/O language called CALS
• Can only find public info about CALS dating from 1996

CEBus devices

• A CEBus device has functional components called contexts e.g. a TV has contexts audio amplifier, tuner, etc
• Contexts contain objects such as source switch, gain control, etc
• Objects have methods and instance variables