Transmission interface conversion device
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United States of America Patent
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Sep 20, 2005
Grant Date -
Nov 4, 2004
app pub date -
May 2, 2003
filing date -
May 2, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides a transmission interface conversion device, which can first convert the communication signal of a master equipment controller and then connect to a plurality of slave devices through a pair of transmission lines so as to perform data transmission and power supply synchronously. The transmission interface conversion device includes: a conversion interface, formed by at least one repeater circuit, which transmits data by half-duplex; a signal inspector, which inspects whether a signal has been transmitted to the conversion interface; a control unit, to determine the orientation and the operation method of the repeater circuit by using the signal that has been inspected by the signal inspector; and a voltage adjustor, to supply needed electric power to all the above-mentioned circuits. The invention has features of being installed and maintained easily as well as being able to reduce the cost of cabling.
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