Heart beat monitoring
First Claim
1. An infra-red transmitter comprisingtransducer means for sensing a heart beat and for producing a detectable electrical transducer output signal in response to sensing a heart beat;
- signal processing means for, responsive to the transducer output signals representative of heart beats, producing therefrom short pulses;
infra-red transmission means for transmitting infrared radiation that penetrate of a layer of clothing;
a battery for energizing said infra-red transmission means;
and gating means responsive to said short pulses for gating electrical energy originating with said battery means to the infra-red transmission means;
the electrical energy having voltages and durations that penetrates a layer of clothing at an acceptable low battery power consumption.
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Accused Products
Abstract
An infra-red transmitter comprising transducer means (10) for sensing heart beat and producing a detectable electrical signal (10P); infra-red transmission means (28) that is energisable from a battery (30); signal processing means (14-20) that is responsive to transducer output signals representative of heart beats, and serves to produce therefrom short pulses (20P); and means (32-36) responsive to said short pulses (20P) for gating electrical energy originating with said battery to the infra-red transmission means (28) at voltage(s) and duration(s) that secure detectable penetration of a layer of clothing along with acceptably low battery power consumption.
28 Citations
9 Claims
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1. An infra-red transmitter comprising
transducer means for sensing a heart beat and for producing a detectable electrical transducer output signal in response to sensing a heart beat; -
signal processing means for, responsive to the transducer output signals representative of heart beats, producing therefrom short pulses; infra-red transmission means for transmitting infrared radiation that penetrate of a layer of clothing; a battery for energizing said infra-red transmission means; and gating means responsive to said short pulses for gating electrical energy originating with said battery means to the infra-red transmission means; the electrical energy having voltages and durations that penetrates a layer of clothing at an acceptable low battery power consumption. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Heart beat monitoring apparatus comprising:
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an infra-red detector; and
an infra-red transmitter comprisingtransducer means for sensing a heart beat and for producing a detectable electrical transducer output signal in response to sensing a heart beat; signal processing means for, responsive to the transducer output signals representative of heart beats, producing therefrom short pulses; infra-red transmission means for transmitting to said infra-red detector infrared radiation that penetrates of a layer of clothing; a battery means for energizing said infra-red transmission means; gating means responsive to said short pulses for gating electrical energy originating with said battery to the infra-red transmission means; gate electrical energy gated by said gating means having voltages and durations that penetrates a layer of clothing at an acceptable low battery power consumption.
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Specification