Detection means for providing multiple baud values per individual baud period of a carrier signal to obviate baud timing ambiguities
AssigneeRockwell International Corporation
InventorsGeorge C. Cagle, Eric K. Weeren
Life of this patent
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Abstract
Digital data borne by a carrier signal via a predetermined variation in some characteristic thereof during each baud period with respect to the same characteristic of a reference signal is detected by subdividing each baud period into n intervals, converting the carrier signal characteristic variation to a DC signal which is integrated over a baud period beginning with the inception of each of the intervals and converting to and storing the equivalent data baud value of each integrated DC signal, thus providing multiple messages from which to select a valid message.
Claims24
Detection means for detecting digital data borne by a carrier signal via a predetermined variation in some characteristic thereof during each baud period with respect to the same characteristic of the carrier signal during the previous baud period, comprising:
- means for converting the carrier signal characteristic to a DC signal indicative of the digital data;
- timing means for subdividing each baud period into n plural intervals;
- integration means for integrating the DC signal over a baud period beginning with the inception of each of said n intervals and storing same for an additional baud period;
- comparator means for comparing each integrated DC signal with the integrated DC signal obtained n intervals previously to provide an indication of the data baud value, and
- storage means for storing each such data baud value.
A method for detecting digital data borne by a carrier signal via a predetermined variation in some characteristic thereof during each baud period with respect to the same characteristic of the carrier signal during the previous baud period, comprising:
- converting the carrier signal characteristic to a DC signal indicative of the digital data;
- subdividing each baud period into n plural intervals;
- integrating the DC signal over a baud period beginning with the inception of each of said n intervals and storing same for an additional baud period;
- comparing each integrated DC signal with the integrated DC signal obtained n intervals previously to provide an indication of the data baud value, and
- storing each such data baud value.
Detection means for detecting digital data borne by a carrier signal via a predetermined variation in some characteristic thereof during each baud period with respect to the same characteristic of a reference signal, comprising:
- means for converting the carrier signal characteristic variation to a DC signal indicative of the digital data;
- timing means for subdividing each baud period into n plural intervals;
- integration means for integrating the DC signal over a baud period beginning with the inception of each of said n intervals;
- means for converting the integrated DC signal to its equivalent data baud value, and
- storage means for storing each such data baud value.
A method for detecting digital data borne by a carrier signal via a predetermined variation in some characteristic thereof during each baud period with respect to the same characteristic of a reference signal comprising:
- converting the carrier signal characteristic variation to a DC signal indicative of the digital data;
- subdividing each baud period into n plural intervals;
- integrating the DC signal over a baud period beginning with the inception of each of said n intervals;
- converting the integrated DC signal to its equivalent data baud value, and
- storing each such data baud balue.
Dependencies are inferred from the claim text.