Arrangement, in particular in vehicles, for transmitting electric signals by connecting lines
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United States of America Patent
Stats
-
Oct 13, 1998
Grant Date -
N/A
app pub date -
Feb 12, 1996
filing date -
Jul 8, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Electric low current signals are transmitted through two-wire circuits having coaxial connectors which are closed by windings that are coupled transformer-like to the coaxial connectors. This arrangement allows transmission of control signals for electric power consuming devices within automobile doors, low frequency audio signals, and electrical power to power the electric consumers. All signals are transmitted on a common data cable. Control signals are in binary coded form, modulated onto a carrier signal, as are modulated, low frequency audio signals. The signals are demodulated in a door module and separated according to frequency. The low frequency audio signals are amplified and transmitted to a loudspeaker. The control signals are processed by a microprocessor controller in conjunction with switching units that create corrective actions for the power consuming devices located in the door.
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