Supplying Electrical Power
1 Assignment
0 Petitions
Accused Products
Abstract
A power supply includes a battery source supplying power and a voltage converter circuit. The voltage converter circuit converts the power to the input voltage supplied to other circuitry. The voltage converter circuit varies the input voltage in response to a load current drawn by the other circuitry from the power supply.
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Citations
48 Claims
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1-9. -9. (canceled)
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10. An active noise reduction (ANR) headset system comprising:
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a headset circuitry receiving an input voltage; and a power supply providing the input voltage to the headset circuitry, the power supply comprising; a direct current (DC) voltage source supplying power; and a voltage converter circuit converting the power to the input voltage supplied to the headset circuitry, the voltage converter circuit varying the input voltage in response to changes to a headset load current drawn by the headset circuitry from the power supply; and a shutoff circuit placing the headset circuitry in a lower power consumption state when the headset load current falls below a threshold value for a predetermined amount of time, wherein the headset circuitry comprises; a voltage converter circuit converting the power to the input voltage supplied to the headset circuitry, the voltage converter varying the input voltage in response to changes to a headset load current drawn by the headset circuitry from the power supply, a shutoff circuit placing the headset circuitry in a lower power consumption state when the headset load current falls below a threshold value for a predetermined amount of time, an ANR circuit receiving a signal from a microphone positioned in an earcup and including a feedback loop to actively reduce the signal; a first voltage regulator limiting a voltage supplied to the ANR circuit and to an amplifier to a first predetermined voltage; a second voltage regulator limiting the input voltage of the headset circuitry to a second predetermine voltage; and a voltage control loop circuitry monitoring the headset load current and the input voltage, the voltage control loop circuitry providing a feedback signal to the voltage converter circuitry. - View Dependent Claims (11, 13, 14, 15, 16, 17)
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12. (canceled)
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18-28. -28. (canceled)
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29. A power supply for an active noise reduction headset, comprising:
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a direct current (DC) voltage source supplying power; a voltage converter circuit converting the power to the input voltage supplied to the headset circuitry, the voltage converter circuit varying the input voltage in response to changes to a headset load current drawn by the headset circuitry from the power supply; a shutoff circuit placing the headset circuitry in a lower power consumption state when the headset load current falls below a threshold value for a predetermined amount of time, a voltage converter circuit converting the power to the input voltage supplied to the headset circuitry, the voltage converter varying the input voltage in response to changes to a headset load current drawn by the headset circuitry from the power supply, a shutoff circuit placing the headset circuitry in a lower power consumption state when the headset load current falls below a threshold value for a predetermined amount of time, an ANR circuit receiving a signal from a microphone positioned in an earcup and including a feedback loop to actively reduce the signal; a first voltage regulator limiting a voltage supplied to the ANR circuit and to an amplifier to a first predetermined voltage; a second voltage regulator limiting the input voltage of the headset circuitry to a second predetermine voltage, and a shutoff circuit placing the headset circuitry in a lower power consumption state when the headset load current falls below a threshold value for a predetermined amount of time. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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30. (canceled)
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38-46. -46. (canceled)
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47. A method of supplying power to an active noise reduction (ANR) headset, comprising:
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measuring a load current drawn by a headset circuitry from a power supply; supplying an input voltage to the headset circuitry in response to the load current placing the headset circuitry in a lower power consumption state when the headset load current falls below a threshold value for a predetermined amount of time; wherein placing the headset circuitry in a lower power consumption state comprises terminating the input voltage to the headset circuitry.
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48-53. -53. (canceled)
Specification