Appeal No. 2001-2030 Application No. 08/874,046 communication protocols, data exchange formats and/or command sets. Unlike conventional home control system data protocols, the inventive communication system does not address individual electronic appliances, but, instead, addresses entire component groups using a group identifier code. Representative independent claim 1 is reproduced as follows: 1. A home control system that uses electrical power lines for communications, comprising: a plurality of components that are connectable for communications among themselves through the electrical power lines, said components including groups of components, wherein each group is identified collectively by a particular group identifier code; components of any particular group being configured to compose and send messages according to a protocol that differs from a protocol employed by another group of components, wherein the messages include the group identifier code of their particular group; components of any particular group being further configured to receive messages from components of different groups and to disregard messages that include a group identifier code different than the group identifier code of their particular group. The examiner relies on the following references: Guidette et al. (Guidette) 5,227,762 Jul. 13, 1993 Bertsch 5,570,085 Oct. 29, 1996 Dykema et al. (Dykema) 5,661,804 Aug. 26, 1997 (filed Jun. 27, 1995) -2–Page: Previous 1 2 3 4 5 6 7 8 9 10 11 NextLast modified: November 3, 2007