Method for data transmission via a data transmission path...

Details Method for data transmission via a data transmission path... Method for data transmission via a data transmission path...

2005-08-11

2009-02-17

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Cable systems and components

Transformer coupling

C375S257000, C375S258000, C375S260000

Reexamination Certificate

active

07492827

ABSTRACT:
A method and an apparatus for data transmission via a transmission path having at least two inductive transformers, which each have a primary winding with a time constant and have a secondary winding. The method includes driving the primary windings to transmit an information event by means of drive signals in such a way that the sum of the drive signals follows an envelope curve with an envelope curve duration. The envelope curve being chosen such that its time profile rises within a rise period from an initial value to a maximum value and falls within a fall period from the maximum value back to the initial value, and the magnitudes of the rise period and of the fall period are longer than the time constants of the primary windings. The time profile of the drive signals being dependent on the information to be transmitted and being chosen such that there is at least one steep flank, whose flank duration is shorter than the time constants of the primary windings.

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