Audio source amplification with speaker protection features and internal voltage and current sensing
AssigneeMeta Platforms Technologies, LLC
InventorMarshall Chiu
Life of this patent
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Abstract
An apparatus for amplifying an audio source includes a speaker and a chip. The chip includes a processor configured to generate a signal and an amplifier element configured to amplify the signal into an amplified signal. The chip further includes a current monitor configured to monitor the current of the amplified signal prior to the amplified signal being output from the chip to the speaker and a voltage monitor configured to monitor the voltage of the amplified signal prior to the amplified signal being output from the chip to the speaker. The processor of the chip is configured to control a power of the amplified signal output from the chip to the speaker based at least on the current and the voltage.
Claims20
An apparatus, comprising:
- a speaker;
- and
- a chip electrically coupled to the speaker by an electrical connection, wherein the chip comprises:
- a processor configured to generate a signal;
- an amplifier element on the chip, the amplifier element configured to amplify the signal into an amplified signal, wherein the amplifier element is located at least one of:
- in direct contact with terminals of the speaker;
- or
- a distance away from the terminals of the speaker, wherein a software resistance compensation module is used to compensate for resistance from a connection element that connects the amplifier element and the speaker;
- a current monitor on the chip, the current monitor configured to monitor a current of the amplified signal prior to the amplified signal being output from the chip to the speaker;
- a voltage monitor on the chip, the voltage monitor configured to monitor a voltage of the amplified signal prior to the amplified signal being output from the chip to the speaker;
- and
- wherein the processor of the chip is configured to control a power of the amplified signal output from the chip to the speaker based at least on the current and the voltage.
A method for amplifying an audio source comprising:
- generating a signal;
- amplifying, by an amplifier element on a chip, the signal into an amplified signal, wherein the amplifier element is located at least one of:
- in direct contact with terminals of a speaker;
- or
- a distance away from the terminals of the speaker, wherein a software resistance compensation module is used to compensate for resistance from a connection element that connects the amplifier element and the speaker;
- determining a voltage of the amplified signal prior to the amplified signal being output from the chip to the speaker;
- determining a current of the amplified signal prior to the amplified signal being output from the chip to the speaker;
- and
- controlling a power of the amplified signal output from the chip to the speaker based at least on the current and the voltage.
One or more non-transitory computer-readable media storing instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:
- generating a signal;
- amplifying, by an amplifier element on a chip, the signal into an amplified signal, wherein the amplifier element is located at least one of:
- in direct contact with terminals of a speaker;
- or a distance away from the terminals of the speaker, wherein a software resistance compensation module is used to compensate for resistance from a connection element that connects the amplifier element and the speaker;
- determining a voltage of the amplified signal prior to the amplified signal being output from the chip to the speaker;
- determining a current of the amplified signal prior to the amplified signal being output from the chip to the speaker;
- and controlling a power of the amplified signal output from the chip to the speaker based at least on the current and the voltage.
Dependencies are inferred from the claim text.