Communication system having analog-to-digital-to-analog conversion means
First Claim
1. A communication system comprising:
- means for converting an analog signal into a succession of binary coded words of equal length each word being made up of a series of bits spaced apart from each other by a first established time period, the words being spaced apart from each other by a second established time period greater than said first established time period wherein the succession of binary coded words represents the amplitude of the analog signal;
means for converting the binary coded words into a succession of bursts of energy in serial form, each burst of energy representing a bit of the binary coded word and each burst of energy having either a frequency F0 representing a "0" bit in the word or a frequency F1, representing a "1" bit in the word;
means for transmitting the succession of bursts of energy;
means for receiving the succession of bursts of energy;
means for reconverting the succession of bursts of energy into a succession of received binary coded words; and
means for reconverting the succession of received binary coded words into a signal representative of the analog signal.
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Abstract
A communication system having a transmitter section and a receiver section. The transmitter converts an analog signal into a succession of binary coded words of equal length. The words are spaced apart by a fixed period of time. The succession of binary coded words represents the amplitude of the analog signal and is converted into a corresponding succession of bursts of energy, each burst of energy representing a bit of the binary coded word and having either a frequency at F0, representing a "0" in the binary coded word, or a frequency F1, representing a "1". The receiver section of the communication system receives the succession of bursts of energy and converts it into a succession of binary coded words representative of the originally transmitted words. A digital-to-analog converter provides a signal representative of the original analog signal from the succession of binary coded words.
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Citations
11 Claims
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1. A communication system comprising:
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means for converting an analog signal into a succession of binary coded words of equal length each word being made up of a series of bits spaced apart from each other by a first established time period, the words being spaced apart from each other by a second established time period greater than said first established time period wherein the succession of binary coded words represents the amplitude of the analog signal; means for converting the binary coded words into a succession of bursts of energy in serial form, each burst of energy representing a bit of the binary coded word and each burst of energy having either a frequency F0 representing a "0" bit in the word or a frequency F1, representing a "1" bit in the word; means for transmitting the succession of bursts of energy; means for receiving the succession of bursts of energy; means for reconverting the succession of bursts of energy into a succession of received binary coded words; and means for reconverting the succession of received binary coded words into a signal representative of the analog signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication system comprising:
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means for converting an analog signal into a succession of binary coded words of equal length, the words being spaced apart from each other by an established time period wherein the succession of binary coded words represents the amplitude of the analog signal; means for converting the binary coded words into a succession of bursts of energy in serial form, each burst of energy representing a bit of the binary coded word and each burst of energy having either a frequency F0 representing a "0" bit in the word or a frequency F1, representing a "1" bit in the word; means for transmitting the succession of bursts of energy; means for receiving the succession of bursts of energy; means for reconverting the succession of bursts of energy into a succession of received binary coded words; and means for reconverting the succession of received binary coded words into a signal representative of the analog signal, said means for receiving the succession of bursts of energy and the means for reconverting the succession of bursts of energy including means for detecting the difference between a burst of energy having a frequency F0 and a burst of energy having a frequency of F1 to provide a detected signal, and means for converting the detected signal into a succession of binary coded words, each binary coded word composed of zeroes and ones representative of F0 and F1, respectively, said means for detecting including an FM detector to provide a first voltage representative of F0 and a second voltage representative of F1, and means responsive to the first voltage level and the second voltage level for providing a first output pulse upon the reception of a voltage equal to the first level and a second output pulse upon the reception of a voltage equal to the second voltage level. - View Dependent Claims (11)
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Specification