Control device for controlling the starting a vehicle in response to a voice command
First Claim
1. A control device for controlling the starting of a vehicle in response to a voice command from a driver, comprising:
- means for receiving said voice command from the driver and for generating a digital voice signal corresponding to said voice command;
means for determining whether the driver has been drinking alcohol based upon said digital voice signal and for outputting an indication signal; and
means for controlling the starting of the vehicle in accordance with said indication signal.
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Accused Products
Abstract
A device for sensing whether a driver has been drinking by analyzing the driver'"'"'s voice, which includes a parameter extractor for producing a parameter corresponding to a linear prediction coefficient-cepstrum coefficient extracted from a digital signal obtained by converting the sound of the voice command, a storage device for storing a reference parameter extracted from the voice of the driver when the driver is sober, a comparator for comparing a current parameter extracted by the extractor with the reference parameter so as to produce a difference signal representing the deviation, and a decision circuit for determining whether the driver has been drinking in accordance with the deviation value. The parameter extractor generates the linear prediction coefficient-cepstrum coefficient after producing a linear prediction coefficient by performing auto-correlation on the digital voice signal.
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Citations
28 Claims
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1. A control device for controlling the starting of a vehicle in response to a voice command from a driver, comprising:
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means for receiving said voice command from the driver and for generating a digital voice signal corresponding to said voice command; means for determining whether the driver has been drinking alcohol based upon said digital voice signal and for outputting an indication signal; and means for controlling the starting of the vehicle in accordance with said indication signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A control device for controlling the starting of a vehicle in response to a voice command from a driver, comprising:
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a voice input unit for receiving said voice command and for converting said voice command to a digital voice signal; a parameter extractor for outputting a parameter corresponding to a linear prediction coefficient-cepstrum coefficient extracted from said digital voice signal; a decision circuit for comparing said parameter with a reference parameter, corresponding to the voice command of the driver issued when the driver had not been drinking alcohol, to determine whether the driver has been drinking alcohol; and a controller for controlling the starting of the vehicle in accordance with an output from said decision circuit. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A device for determining whether a driver has been drinking alcohol based on the driver'"'"'s voice, comprising:
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a voice input unit for receiving a voice command from the driver and for converting said voice command into a digital voice signal; a parameter extractor for producing a parameter corresponding to a linear prediction coefficient-cepstrum coefficient extracted from said digital voice signal and for outputting said parameter; a memory for storing a reference parameter, corresponding to the voice command of the driver issued when the driver had not been drinking alcohol; a comparator for comparing said parameter extracted by said parameter extractor with said reference parameter to determine a difference signal representing a deviation value; and a decision circuit for determining whether the driver has been drinking alcohol according to said deviation value. - View Dependent Claims (16, 17)
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18. A method for controlling the starting of a vehicle in response to a voice command from a driver, comprising the steps of:
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generating a digital voice signal corresponding to said voice command; determining whether the driver has been drinking alcohol based upon said digital voice signal; outputting an indication signal indicating whether the driver has been drinking alcohol; and controlling the starting of the vehicle in accordance with said indication signal. - View Dependent Claims (19, 20, 21, 22)
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23. A method for controlling the starting of a vehicle in response to a voice command from a driver, comprising the steps of:
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converting said voice command into a digital voice signal; generating a parameter corresponding to a linear prediction coefficient-cepstrum coefficient extracted from said digital voice signal; comparing said parameter with a reference parameter, corresponding to the voice command of the driver issued when the driver had not been drinking alcohol, to determine whether the driver has been drinking alcohol; and controlling the starting of the vehicle in accordance with a result of said comparing step. - View Dependent Claims (24, 25, 26)
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27. A method for determining whether a driver has been drinking alcohol based on the driver'"'"'s voice, comprising the steps of:
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receiving a voice command from the driver; converting the voice command into a digital voice signal; producing a parameter corresponding to a linear prediction coefficient-cepstrum coefficient extracted from said digital voice signal; storing a reference parameter corresponding to the voice command of the driver issued when the driver had not been drinking alcohol; comparing said parameter with said reference parameter; outputting a difference signal; determining whether the driver has been drinking alcohol in accordance with said difference signal. - View Dependent Claims (28)
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Specification