Sports impact sensor apparatus for proximate operation
First Claim
1. Sports target apparatus for operation without signal interference with other proximately located such apparatus, said apparatus comprisinga) a first piezo film impact transducer having a surface exposed for impact by a sports implement and producing an impact responsive electrical signal in response to impact,b) an impact reporting transmitter connected to respond to an impact responsive signal from said impact transducer for broadcasting a selected modulated carrier signal, said transmitter including first selection means for broadcasting only one of a first set of different modulated carrier signals,c) an impact reporting receiver arranged for receiving the selected modulated carrier signal and for producing in response thereto an impact responsive output signal, said impact reporting receiver including second selection means for receiving only one of said first set of different modulated carrier signals, andd) an output unit for responding to the import responsive output signal from said receiver to produce a selected perceptible report of impact on the transducer,so that first and second proximately located target apparatus can each operate with different modulated carrier signals and thereby avoid signal interference with one another.
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Accused Products
Abstract
A sports impact sensing target reports a sensed impact to a remote location without interference with the operation of like impact sensing targets that are proximately located. The sports impact target reports each sensed impact with a selected modulated signal that can be selected readily to distinguish it from the report signals produced by other proximate impact sensing targets.
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Citations
4 Claims
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1. Sports target apparatus for operation without signal interference with other proximately located such apparatus, said apparatus comprising
a) a first piezo film impact transducer having a surface exposed for impact by a sports implement and producing an impact responsive electrical signal in response to impact, b) an impact reporting transmitter connected to respond to an impact responsive signal from said impact transducer for broadcasting a selected modulated carrier signal, said transmitter including first selection means for broadcasting only one of a first set of different modulated carrier signals, c) an impact reporting receiver arranged for receiving the selected modulated carrier signal and for producing in response thereto an impact responsive output signal, said impact reporting receiver including second selection means for receiving only one of said first set of different modulated carrier signals, and d) an output unit for responding to the import responsive output signal from said receiver to produce a selected perceptible report of impact on the transducer, so that first and second proximately located target apparatus can each operate with different modulated carrier signals and thereby avoid signal interference with one another.
Specification