Method and apparatus for automatic matching of parameters of an interface
First Claim
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1. A method for matching transmission parameters of an interface with transmission parameters of a protocol of binary signals received by the interface, comprising the steps of:
- (a) storing a plurality of membership functions, each of the plurality of membership functions representing a relationship between characteristics of a transmission rate and a plurality of degrees of membership;
(b) storing a plurality of fuzzy logic rules for selecting the transmission parameters of the interface according to the plurality of membership functions;
(c) measuring characteristics of the binary signals received to determine measured values of the characteristics of the transmission rate; and
(d) assessing the plurality of fuzzy logic rules with respect to the measured values, to assess a degree of likelihood of a result variable and select the transmission parameters of the interface that match the transmission parameters of the binary signal received.
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Abstract
Problems of matching an interface to a transmission protocol are resolved by implementing fuzzy logic. A set of fuzzy logic rules is used to select transmission parameters based upon degrees of membership of characteristics of a received signal. The characteristics may be time duration of bits, number of bits, parity value, and duration of stop bit, for example. As a result, the receiving circuits get simplified and even become universal.
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Citations
49 Claims
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1. A method for matching transmission parameters of an interface with transmission parameters of a protocol of binary signals received by the interface, comprising the steps of:
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(a) storing a plurality of membership functions, each of the plurality of membership functions representing a relationship between characteristics of a transmission rate and a plurality of degrees of membership; (b) storing a plurality of fuzzy logic rules for selecting the transmission parameters of the interface according to the plurality of membership functions; (c) measuring characteristics of the binary signals received to determine measured values of the characteristics of the transmission rate; and (d) assessing the plurality of fuzzy logic rules with respect to the measured values, to assess a degree of likelihood of a result variable and select the transmission parameters of the interface that match the transmission parameters of the binary signal received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for determining transmission parameters of a digital signal, comprising the steps of:
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(a) determining at least one characteristic of the digital signal; (b) comparing the characteristic with a predetermined function to determine a degree of certainty that the characteristic corresponds to the predetermined function; and (c) determining the transmission parameters of the digital signal based upon the determined degree of certainty of the predetermined function according to a set of fuzzy logic rules. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus for determining transmission parameters of a digital signal, comprising:
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first means for determining at least one characteristic of the digital signal; second means for comparing the characteristic with a predetermined function to determine a degree of certainty that the characteristic corresponds to the predetermined function; and third means for determining the transmission parameters of the digital signal based upon the determined degree of certainty of the predetermined function according to a set of fuzzy logic rules. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An apparatus for determining transmission parameters of a digital signal, comprising:
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a memory that stores a predetermined function that relates a degree of certainty to at least one transmission characteristic, and at least one fuzzy logic rule for evaluating the degree of certainty; and a processor, having a first input that receives at least one measured characteristic of the digital signal, a second input that receives the predetermined function, and a fuzzy logic processor that evaluates the at least one fuzzy logic rule, the processor evaluating the predetermined function with respect to the at least one measured characteristic to determine the transmission parameters of the digital signal. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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39. A processing system comprising:
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a first processor for performing functions and for receiving a digital signal having transmission parameters; and an interface that determines the transmission parameters for the digital signal, the interface including; a memory that stores a predetermined function that relates a degree of certainty to a transmission characteristic, and at least one fuzzy logic rule for evaluating the degree of certainty; and a second processor, having a first input that receives at least one measured characteristic of the digital signal, a second input that receives the predetermined function, and a fuzzy logic processor that evaluates the at least one fuzzy logic rule, the processor evaluating the predetermined function with respect to the at least one measured characteristic to determine the transmission parameters of the digital signal. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification