System for synchronization of multi-sensor data
First Claim
1. A multi-sensor system, which comprises:
- a first analog sub-system, said first analog sub-system including a first analog sensor, said first analog sensor producing an output, and first analog circuitry coupled to said first analog sensor, said first analog circuitry processing said output from said first analog sensor;
a second analog sub-system, said second analog sub-system including a second analog sensor, said second analog sensor producing an output, and second analog circuitry coupled to said second analog sensor, said first analog circuitry processing said output from said second analog sensor; and
,means for synchronizing the outputs of said first and second analog circuitry, wherein said means for synchronizing the outputs of said first and second analog circuitry comprises;
a first analog multiplexer coupled between said first analog sensor and said first analog circuitry;
a second analog multiplexer coupled between said second analog sensor and said second analog circuitry; and
,a marker signal generator coupled to said first and second analog multiplexers.
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Abstract
A multi-sensor system includes a first analog sensor sub-system, a second analog sensor sub-system, and a system for synchronizing the outputs of the first and second analog sub-systems. Each analog sensor sub-system includes a sensor that produces an analog output. Each sensor is coupled to analog circuitry that processes the output from the sensor. The system for synchronizing the outputs of the first and second analog sensor sub-systems simultaneously inserts a marker into the outputs of the first and second analog sensors. Then, the outputs of the analog circuitry of the first and second analog sub-systems are synchronized based upon the marker. The marker signal may be produced using a Barker sequence signal generator.
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Citations
25 Claims
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1. A multi-sensor system, which comprises:
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a first analog sub-system, said first analog sub-system including a first analog sensor, said first analog sensor producing an output, and first analog circuitry coupled to said first analog sensor, said first analog circuitry processing said output from said first analog sensor; a second analog sub-system, said second analog sub-system including a second analog sensor, said second analog sensor producing an output, and second analog circuitry coupled to said second analog sensor, said first analog circuitry processing said output from said second analog sensor; and
,means for synchronizing the outputs of said first and second analog circuitry, wherein said means for synchronizing the outputs of said first and second analog circuitry comprises; a first analog multiplexer coupled between said first analog sensor and said first analog circuitry; a second analog multiplexer coupled between said second analog sensor and said second analog circuitry; and
,a marker signal generator coupled to said first and second analog multiplexers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A sensor sub-system, which comprises:
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an analog sensor, said analog sensor producing an output; analog circuitry coupled to said analog sensor, said analog circuitry processing said output from said analog sensor; and
,means for inserting a synchronizing marker into the output of said analog sensor said means for inserting said synchronizing marker into the output of said analog sensor including; an analog multiplexer coupled between said analog sensor and said analog circuitry; a digital-to-analog converter coupled to said analog multiplexer; and
,a digital signal generator coupled to said digital-to-analog converter. - View Dependent Claims (17, 18, 19, 20)
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21. A multi-sensor synchronization system, which comprises:
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means for receiving an output signal from a first sensor sub-system, said means for receiving said output signal from said first sensor sub-system including a first input buffer; means for receiving an output signal from a second sensor sub-system, said means for receiving said output signal from said second sensor including a second input buffer; a first correlation device coupled to said first input buffer; a second correlation device coupled to said second input buffer; a first peak detector coupled to said first correlation device; a second peak detector coupled to said second correlation device; an address generation unit coupled to said first and second peak detectors and to said first and second buffers; and
,means for sending a synchronization marker signal to said first and second sensor sub-systems. - View Dependent Claims (22, 23, 24, 25)
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Specification