Data decoder
First Claim
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1. A method for decoding a data stream, comprising the steps of:
- acquiring an analog data signal;
determining an initial polarity of the analog data signal;
determining a threshold transition level;
determining a plurality of transition edges where the analog data signal crosses the threshold transition level;
determining a polarity of the analog data signal at each transition edge in accordance with the initial polarity of the analog data signal;
determining bitrate information of the analog data signal;
determining the number of unit intervals between each pair of transition edges;
assigning a binary value to each of the unit intervals; and
storing the binary values to a computer readable storage medium.
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Abstract
A method, apparatus and computer program for decoding a data stream. The method comprises the steps of acquiring an analog data signal, determining an initial polarity of the analog data signal, determining a threshold transition level, determining a plurality of transition edges where the analog data signal crosses the threshold transition level, and determining the number of unit intervals between each pair of transition edges. A binary value is assigned to each of the unit intervals, and the binary values are displayed to a user.
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Citations
21 Claims
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1. A method for decoding a data stream, comprising the steps of:
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acquiring an analog data signal; determining an initial polarity of the analog data signal; determining a threshold transition level; determining a plurality of transition edges where the analog data signal crosses the threshold transition level; determining a polarity of the analog data signal at each transition edge in accordance with the initial polarity of the analog data signal; determining bitrate information of the analog data signal; determining the number of unit intervals between each pair of transition edges; assigning a binary value to each of the unit intervals; and storing the binary values to a computer readable storage medium. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer readable storage medium bearing instructions that when executed by a computer controlled oscllioscope for decoding a data stream, cause the oscilloscope to execute the steps of:
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acquiring an analog data signal; determining an initial polarity of the analog data signal; determining a threshold transition level; determining a plurality of transition edges where the analog data signal crosses the threshold transition level; determining a polarity of the analog data signal at each transition edge in accordance with the initial polarity of the analog data signal; determining bitrate information of the analog data signal; determining the number of unit intervals between each pair of transition edges; assigning a binary value to each of the unit intervals; and storing the binary values to a computer readable storage medium. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An oscilloscope for decoding a data stream, comprising:
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an acquisition portion for acquiring an analog data signal; a processor for determining an initial polarity of the analog data signal, determining a threshold transition level, determining a plurality of transition edges where the analog data signal crosses the threshold transition level, determining a polarity of the analog data signal at each transition edge in accordance with the initial polarity of the analog data signal, determining bitrate information of the analog data signal, determining the number of unit intervals between each pair of transition edges, and assigning a binary value to each of the unit intervals; and a display for displaying the binary values. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method for determining a polarity of an acquired analog data signal, comprising the steps of:
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determining an initial polarity of the analog data signal; determining a threshold transition level; determining a plurality of transition edges where the analog data signal crosses the threshold transition level; and determining a polarity of the analog data signal at each transition edge in accordance with the initial polarity of the analog data signal.
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Specification