Device and method for detecting a target using a high speed sampling device
First Claim
1. A high speed serial sampler device for detecting a location of a target comprising:
- a) a transmitter for transmitting a signal; and
b) a programmable logic circuit having a receiver for detecting a received echo reflected from at least one target, wherein the programmable logic circuit samples the received echo based on an external clock to create a sampled echo, and wherein a transition in the sampled received echo indicates a location of a target.
1 Assignment
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Accused Products
Abstract
Devices and methods for detecting a target using a logic circuit for increasing the accuracy and speed at which targets can be detected in security and surveillance applications. A commercially available field programmable gate array may be used as the logic device. In one embodiment, the Multigigabit Transfer port (MGT) of the field programmable gate array is locked to an external clock. The coupling of the MGT port to an external clock increases the rate at which the received signal is sampled, without having to use the device in the oversampling mode. By doing so, the field programmable gate array is able to sample at least eight times faster than the actual transfer rate, which increases the speed and accuracy by which a target can be detected.
12 Citations
19 Claims
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1. A high speed serial sampler device for detecting a location of a target comprising:
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a) a transmitter for transmitting a signal; and b) a programmable logic circuit having a receiver for detecting a received echo reflected from at least one target, wherein the programmable logic circuit samples the received echo based on an external clock to create a sampled echo, and wherein a transition in the sampled received echo indicates a location of a target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for detecting the location of a target during surveillance comprising:
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a) a transmitter for broadcasting a signal for requesting information about a location of a target; b) a programmable logic circuit having; i) a receiver for detecting an echo signal reflected from the target; and ii) a sampler for oversampling the echo signal at a rate based on an external clock; and c) a decoder for receiving an oversampled signal from the sampler, decoding the oversampled signal, and outputting a low signal if a target is not detected and a high signal if the target is detected. - View Dependent Claims (11, 12, 13, 14)
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15. A method for detecting a target, the steps comprising:
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a) transmitting a signal at the target; b) detecting a received signal reflected from the target; c) sampling the received signal with an field-programmable gate array based on an external clock; and d) detecting a target by determining a transition in the sampled received signal. - View Dependent Claims (16, 17, 18, 19)
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Specification