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Insteon
Insteon is a home automation (aka domotics) technology that enables light switches, lights, thermostats, motion sensors, and other electrical devices to interoperate through power lines, radio frequency (RF) communications, or both. It employs a dual-mesh networking topology in which all devices are peers and each device independently transmits, receives, and repeats messages.〔(【引用サイトリンク】 title= What is Insteon? )〕 Like other home automation systems, it has been associated with the Internet of Things.
Insteon-based products were launched in 2005 by Smartlabs, Inc., the company which holds the trademark for ''Insteon''.〔(【引用サイトリンク】 title= INSTEON - Trademark Details )〕 A Smartlabs subsidiary, also named Insteon, was created to market the technology.
==Protocol==
Every message received by an Insteon compatible device undergoes error detection and correction and is then retransmitted to improve reliability. All devices retransmit the same message at the same time so that message transmissions collide synchronously, thus preserving the integrity of the message while strengthening the signal. The power line AC frequency serves as the synchronization reference for message transmissions; the power line protocol uses phase-shift keying.
Each message contains a two-bit "hops" field that is initialized to 3 by the originating node and decremented each time a node in the network repeats the message. Individual Insteon messages can also carry up to 14 bytes of arbitrary user data for custom applications.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Insteon」の詳細全文を読む
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