Portable RF breathalyzer
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Abstract
A RF breathalyzer system, which transmits a unique RF signal in response to a toxic or non-toxic breath sample given to a RF breathalyzer by the user. An immobilizer CPU is installed in a vehicle to receive commands from the RF breathalyzer and to control a horn and lights of a vehicle, to immobilize the engine, and is connected to a GPS antenna driver through a mobile phone/pager unit to communicate with a monitoring station.
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Citations
36 Claims
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1-24. -24. (canceled)
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25. A digital video signal processing apparatus for modifying an amplitude level of said digital video signal according to a non-linear curve comprising:
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low pass filter means (71) to which said digital video signal is supplied to produce a filtered digital video signal;
means (72) for generating a multiplying coefficient and an adding coefficient from a respective linear expression of one of line segments of said filtered digital video signal, each of said line segments being expressed by dividing said non-linear curve into a plurality of sections and replacing each of said sections with a respective line segment which can be expressed as a linear expression to form a succession of line segments;
means (73) for multiplying said amplitude level of said digital video signal by said multiplying coefficient; and
means (74) for adding an output of said means for multiplying and said adding coefficient. - View Dependent Claims (26, 27, 28)
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29. A digital video signal processing apparatus for modifying an amplitude level of said digital video signal according to a non-linear curve comprising:
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a low pass filter to which said digital video signal is supplied to produce a filtered digital video signal;
a generator for generating a multiplying coefficient and an adding coefficient from a respective linear expression of one of line segments of said filtered digital video signal, each of said line segments being expressed by dividing said non-linear curve into a plurality of sections and replacing each of said sections with a respective line segment which can be expressed as a linear expression to form a succession of line segments;
a multiplier for multiplying said amplitude level of said digital video signal by said multiplying coefficient; and
an adder for adding an output of said means for multiplying and said adding coefficient. - View Dependent Claims (30, 31, 32)
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33. A digital video signal processing method for modifying an amplitude level of said digital video signal according to a non-linear curve, said method comprising the steps of:
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low pass filtering said digital video signal to produce a filtered digital video signal;
generating a multiplying coefficient and an adding coefficient from a respective linear expression of one of line segments of said filtered digital video signal, each of said line segments being expressed by dividing said non-linear curve into a plurality of sections and replacing each of said sections with a respective line segment which can be expressed as a linear expression to form a succession of line segments;
multiplying said amplitude level of said digital video signal by said multiplying coefficient; and
adding an output of said means for multiplying and said adding coefficient. - View Dependent Claims (34, 35, 36)
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Specification