发明名称 |
Bit encoding in home control systems |
摘要 |
A system for electronic communications using electrical power lines in a building includes a plurality of components that are connected for communications among themselves through the electrical power lines. A control transmitter is associated with at least one of the components for transmitting a data stream over the electrical power lines as a series of state changes. The data stream has a sequence of binary elements that each have one of two possible binary values. The control transmitter is configured to encode the binary elements as a series of three different state intervals on the transmission medium, depending on the value of the current binary element, the immediately preceding binary element, and the immediately following binary element. A control receiver is configured to decode the original data stream based on the state intervals. The encoding scheme allows a bit rate that is equal to the baud rate of the transmission medium.
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申请公布号 |
US5977865(A) |
申请公布日期 |
1999.11.02 |
申请号 |
US19970874044 |
申请日期 |
1997.06.12 |
申请人 |
MICROSOFT CORPORATION |
发明人 |
ODINAK, GILAD;KEAM, NIGEL S.;RANTA, CRAIG S. |
分类号 |
H04B3/54;H04L25/49;(IPC1-7):H04M11/04 |
主分类号 |
H04B3/54 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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