Data transfer method and system in low voltage networks
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United States of America Patent
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Jan 14, 2003
Grant Date -
N/A
app pub date -
Dec 2, 1999
filing date -
Mar 27, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a method for data transmission in two-way communication via low-voltage systems that are linked to a higher order telecommunication network. Data transmission takes place within the low-voltage system at a high-frequency range of up to 30 MHz using band spreading of data signals and a transmit level below the specified radio interference or noise voltage limit, in that said band-spread data is given a direction coding to specify a logical direction within the low-voltage system using different sequences of a family of pseudo-random numbers to enable multiple-user operation, and in that the binary sequences of data with their user-specific spreading and direction-specific coding are identified by correlation using specified sequences at attenuation-dependent intervals within the low-voltage system, then said data sequences are regenerated and assigned new direction codes for forwarding.
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