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US 11,388,519 B2Granted
Speaker, terminal, and speaker control method
AssigneeHonor Device Co., Ltd.
InventorsXiao Yang, Ligang Yu, Fang-Ching Lee
Life of this patent
Estimating the term…
Abstract
A speaker includes a front cover, a coil, a frame, a magnet, a magnetic diaphragm, and a voice coil. The coil is located on an inner side of the front cover, the magnetic diaphragm is located between the coil and the voice coil, a periphery of the magnetic diaphragm is adhered to one side of the frame, the magnet is located on the other side of the frame, and the one side and the other side of the frame are two opposite sides of the frame. The voice coil is configured to drive the magnetic diaphragm to vibrate.
Claims17
A terminal, comprising:
- a speaker, comprising a coil, a magnetic diaphragm, and a voice coil;
- and
- an audio amplifier integrated circuit, connected to the voice coil and the coil, wherein the audio amplifier integrated circuit comprises a first detection circuit having an input end connected to two pins of the coil, wherein the audio amplifier integrated circuit further comprises a second detection circuit having an input end connected to a first pin and a second pin of the voice coil, wherein the audio amplifier integrated circuit further comprises a driver circuit having an input end connected to an output end of the first detection circuit and connected to an output end of the second detection circuit, and wherein the audio amplifier integrated circuit is configured to:
- measure, using the second detection circuit, a voltage or current across a first end and a second end of the voice coil;
- and
- measure, using the first detection circuit, an inductance value, across a first end and second end of the coil, as affected by the magnetic diaphragm;
- wherein the driver circuit is configured to determine a driver voltage or driver current of the voice coil based on the voltage or the current, and based on the inductance value;
- and
- wherein the voice coil is configured to drive, based on the driver voltage or the driver current, the magnetic diaphragm to vibrate.
6 more elements
A speaker, comprising:
- a front cover;
- a coil, located on an inner side of the front cover;
- a frame;
- a magnet;
- a magnetic diaphragm spaced, with respect to the coil, to act as a core for the coil and to affect inductance of the coil as the magnetic diaphragm is moved;
- a voice coil, wherein the magnetic diaphragm is located between the coil and the voice coil, a periphery of the magnetic diaphragm is adhered to a first side of the frame, the magnet is located on a second side of the frame, the first side and the second side of the frame are opposite sides of the frame, and the voice coil is configured to drive the magnetic diaphragm to vibrate;
- and
- an audio amplifier integrated circuit comprising:
- a first detection circuit having an input end connected to two pins of the coil, and having circuitry for measuring an inductance value, across a first end and a second end of the coil, of the inductance of the coil as affected by the magnetic diaphragm;
- a second detection circuit having an input end connected to a first pin of the voice coil and a second pin of the voice coil, and having circuitry for measuring a voltage or current across a first end and a second end of the voice coil;
- and
- a driver circuit having an input end connected to an output end of the first detection circuit and connected to an output end of the second detection circuit, and having circuitry for determining a driver voltage or driver current of the voice coil based on the voltage or current, and based on the inductance value.
9 more elements
A method, comprising:
- obtaining an inductance value at a first end of a coil and a second end of the coil by measuring, using a first detection circuit that is of an audio amplifier integrated circuit of a speaker and that has an input end connected to two pins of the coil, the inductance value, across the first end and second end of the coil, as affected by a magnetic diaphragm of the speaker;
- obtaining a voltage or a current at a first end of a voice coil and a second end of a voice coil by measuring, using a second detection circuit that is of the audio amplifier integrated circuit and that has an input end connected to a first pin of the voice coil and a second pin of the voice coil, a voltage or current across the first end and the second end of the voice coil;
- determining, by a driver circuit having an input end connected to an output end of the first detection circuit and connected to an output end of the second detection circuit, an adjusted driver voltage or an adjusted driver current of the voice coil based on the voltage or current, and based on the inductance value;
- and
- outputting the adjusted driver voltage or the adjusted driver current to the voice coil, causing the voice coil to drive, under an action of the adjusted driver voltage or the adjusted driver current, the magnetic diaphragm to vibrate.
2 more elements
Dependencies are inferred from the claim text.