Transmission link
AssigneeSiemens Aktiengesellschaft
InventorHermann Zierhut
Life of this patent
Estimating the term…
Abstract
A transmission link for transmitting a sequence of signals comprising pulse and interval signals, across a transmission medium from a transmitter to a receiver circuit of a receiver, whereby each pulse signal is modulated with a frequency. At least two frequencies are used to modulate the pulses, and a separate evaluation circuit is provided in the receiver for each modulating frequency. The output signals of the evaluation circuits are concatenated (linked in series) by a AND-gate circuit.
Claims18
A transmission link for transmitting a sequence of pulses and intervals over a transmission medium comprising:
- a transmitter including means for modulating pulses with at least two frequencies to form modulated pulse signals containing said two frequencies;
- a receiver having a separate evaluation circuit corresponding to each modulation frequency, each evaluation circuit having as an input said modulated pulses and providing a demodulated output;
- and
- an AND-gate circuit, having at least two inputs, each input being coupled to a respective output of one of said evaluation circuits, whereby said AND-gate circuit concatenates the demodulated pulse signals appearing at the outputs of said evaluation circuits
A method of transmitting a sequence of pulses and intervals over a transmission medium comprising:
- modulating pulses with at least two frequencies to form modulated pulses containing said two frequencies;
- transmitting said modulated pulses over the medium;
- seperately receiving said modulated pulses;
- evaluating said pulses at each modulating frequency;
- and
- ANDing the respective results of said evaluations whereby said evaluation results will be concatenated.
Dependencies are inferred from the claim text.