Power supplies
First Claim
Patent Images
1. An audio device comprising:
- an audio input configured to receive an audio signal having an amplitude;
a first voltage source;
a second voltage source;
an amplifier; and
a switch operably coupling the amplifier to the first voltage source, and configured to selectively operate in a first mode and at least a second mode based on the amplitude of the audio signal, wherein;
in the first mode, the amplifier receives electrical power from the first voltage source, andin the second mode, the amplifier receives electrical power from the second voltage source.
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Abstract
Techniques for providing multiple power supplies in electronic devices are disclosed. According to one aspect of the present invention, an appropriate power supply is provided only to accommodate a volume setting. In other words, there are at least two power supplies, one with a low voltage and the other with a high voltage. The high voltage power supply is only applied when there is a need to accommodate a volume setting. Thus the power consumption of the amplifiers is well controlled. As a result, the designs of the device and heat dissipation therein can be simplified and lowered in cost.
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Citations
20 Claims
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1. An audio device comprising:
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an audio input configured to receive an audio signal having an amplitude; a first voltage source; a second voltage source; an amplifier; and a switch operably coupling the amplifier to the first voltage source, and configured to selectively operate in a first mode and at least a second mode based on the amplitude of the audio signal, wherein; in the first mode, the amplifier receives electrical power from the first voltage source, and in the second mode, the amplifier receives electrical power from the second voltage source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of operating an audio device having an amplifier, the method comprising:
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receiving an audio signal; detecting an amplitude of the audio signal; determining a supply voltage to apply to the amplifier based on the detected amplitude; and selectively providing electrical power to the amplifier from a first voltage source and at least a second voltage source in response to the determined supply voltage, wherein the first voltage source is configured to output electrical power having a first voltage, and wherein the second voltage source is configured to output electrical power having a second voltage greater than the first voltage. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A non-transitory computer-readable storage medium storing instructions that, when executed by one or more processors, cause an audio device to perform operations comprising:
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receiving an audio signal; detecting an amplitude of the audio signal; determining a supply voltage to apply to an amplifier of the audio device based on the detected amplitude; and selectively providing electrical power from a first voltage source and at least a second voltage source in response to the determined supply voltage, wherein the first voltage source is configured to output electrical power having a first voltage, and wherein the second voltage source is configured to output electrical power having a second voltage greater than the first voltage.
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Specification