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Direct current (dc) and/or alternating current (ac) load detection for audio codecs

A current and controller technology, applied in the field of load measurement, can solve the problem of not being able to compensate the difference between earphones 104A and 104B

Active Publication Date: 2022-04-26
CIRRUS LOGIC INT SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since smartphone 102 has no information about this characteristic, smartphone 102 cannot compensate for the difference between earphones 104A and 104B
[0004] The disadvantages mentioned here are representative only and are included only to highlight that there is a need for improved electrical components, especially for audio devices employed in consumer devices such as mobile phones.

Method used

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  • Direct current (dc) and/or alternating current (ac) load detection for audio codecs
  • Direct current (dc) and/or alternating current (ac) load detection for audio codecs
  • Direct current (dc) and/or alternating current (ac) load detection for audio codecs

Examples

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Embodiment Construction

[0026] figure 2 is a diagram illustrating an example portable audio device detecting load characteristics of headphones attached to an audio output according to one embodiment of the present disclosure. A portable audio device 202, such as a smartphone or MP3 player, may contain an application processor, memory, display, and one or more audio components. Audio components may include audio codecs, digital signal processors (DSPs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and / or amplifiers. When a pair of headphones 204 is attached to device 202, device 202 may detect the connection through the audio plug and determine that the headphones, or another transducer or speaker, are attached. This detection may trigger the device 202 to determine the characteristics of the attached earphone 204, such as through an audio component or an application processor. For example, the audio component may perform measurements to determine direct current (DC) or...

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Abstract

A portable device can be configured to measure the loading characteristics of headphones. The device can measure the direct current (DC) and / or alternating current (AC) characteristics of the load. These characteristics may be measured by an audio component, such as an audio codec chip or an integrated circuit (IC) controller, and reported to software or firmware running on a processor coupled to the audio component. Software or firmware can then take action based on the measured load characteristics. For example, the load characteristics may be compared to a database of earphones and their known load characteristics to determine the particular earphone model or type of earphones attached to the audio output. The processor can then apply an appropriate equalization curve.

Description

technical field [0001] This instant disclosure relates to load measurement. More specifically, portions of this disclosure relate to detecting characteristics of a load attached to an audio output using direct current (DC) and / or alternating current (AC) based techniques. Background technique [0002] Portable audio devices have become very popular devices in recent years. Their popularity has skyrocketed in part due to the reduction in power consumption of electrical components, which has enabled long battery life, and the cost of digital data storage devices that have It is now possible to carry a large music collection in one device. In addition, mobile phones and tablets are used as portable audio devices, and due to the falling prices of smartphones and tablets, and the increased availability of 4G technology that allows streaming and downloading of audio files to smartphones and tablets, mobile phone and tablet ownership has increased. a significant increase. While...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/46H04R5/04
CPCH03M1/46G01R27/00H04R1/1091H04R3/00H04R3/04H04R5/033H04R5/04H04R29/001H03F3/181H03F2200/03H03F2200/222H03M1/66
Inventor S·阿加瓦尔A·伊兰戈A·C·斯托维克C·J·彼得森D·J·艾伦A·萨托斯科尔
Owner CIRRUS LOGIC INT SEMICON
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