Circuit configuration and method for directly electrically isolated broadband transmission
First Claim
1. A circuit configuration for performing directly electrically isolated broadband transmission, comprising:
- an input stage including at least one logic signal combination device, a first line for transmitting a clock signal, a second line for transmitting a data signal, and a connection to a first ground potential;
an output stage including at least one second logic signal combination device, a filter connected downstream of said second logic signal combination device, and a connection to a second ground potential; and
a decoupling device;
said first logic signal combination device having a first signal input receiving the data signal, and a second signal input receiving the clock signal;
said first logic signal combination device including a first signal output outputting a first output signal to said decoupling device, the first output signal consisting of the data signal superposed on the clock signal;
said decoupling device decoupling said input stage from said output stage by generating a decoupled clock signal from the clock signal and by generating a decoupled first output signal from the first output signal;
said second logic signal combination device including a third signal input receiving the decoupled first output signal from said decoupling device;
said second logic signal combination device including a fourth signal input receiving the decoupled clock signal from said decoupling device;
said second logic signal combination device including a second signal output outputting a second output signal consisting of a decoupled data signal that is separated from the decoupled clock signal;
said second signal output always outputting defined signals;
said filter configured for filtering out interference pulses contained in the second output signal to generate a third output signal that is a filtered decoupled data signal; and
said decoupling device decoupling said input stage from said output stage such that the first ground potential is directly electrically isolated from the second ground potential and such that the clock signal and the first output signal are transmitted in a directly electrically isolated manner from said input stage to said output stage.
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Abstract
In order to enable a simple and cost-effective directly electrically isolated transmission of data signals, the data signals are superposed on a clock signal in an input stage and are transmitted to an output stage in a directly electrically isolated manner via a decoupling device. The clock signal on which the transmitted signals are superposed is filtered out in the output stage. Pulse shape alterations occurring in the signals because of the transmission or because of the filtering-out of the clock signal are compensated in the output stage so that filtered data signals are present at the output of the circuit configuration.
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Citations
19 Claims
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1. A circuit configuration for performing directly electrically isolated broadband transmission, comprising:
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an input stage including at least one logic signal combination device, a first line for transmitting a clock signal, a second line for transmitting a data signal, and a connection to a first ground potential;
an output stage including at least one second logic signal combination device, a filter connected downstream of said second logic signal combination device, and a connection to a second ground potential; and
a decoupling device;
said first logic signal combination device having a first signal input receiving the data signal, and a second signal input receiving the clock signal;
said first logic signal combination device including a first signal output outputting a first output signal to said decoupling device, the first output signal consisting of the data signal superposed on the clock signal;
said decoupling device decoupling said input stage from said output stage by generating a decoupled clock signal from the clock signal and by generating a decoupled first output signal from the first output signal;
said second logic signal combination device including a third signal input receiving the decoupled first output signal from said decoupling device;
said second logic signal combination device including a fourth signal input receiving the decoupled clock signal from said decoupling device;
said second logic signal combination device including a second signal output outputting a second output signal consisting of a decoupled data signal that is separated from the decoupled clock signal;
said second signal output always outputting defined signals;
said filter configured for filtering out interference pulses contained in the second output signal to generate a third output signal that is a filtered decoupled data signal; and
said decoupling device decoupling said input stage from said output stage such that the first ground potential is directly electrically isolated from the second ground potential and such that the clock signal and the first output signal are transmitted in a directly electrically isolated manner from said input stage to said output stage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19)
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14. A method for performing directly electrically isolated broadband transmission, which comprises:
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in an input stage, superimposing a data signal on a clock signal to obtain a first output signal by logically combining the data signal and the clock signal;
transmitting the first output signal and the clock signal in a directly electrically isolated manner to an output stage;
directly electrically isolating a first ground potential of the input stage from a second ground potential of the output stage;
in the output stage, logically combining the first output signal that has been transmitted and the clock signal that has been transmitted to thereby form a second output signal that is a decoupled data signal which is transmitted in a directly electrically isolated manner and which is separated from a decoupled clock signal; and
filtering the second output signal to remove interference pulses contained in the second output signal and to thereby generate a filtered data signal defining a third output signal.
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Specification