Unlock instant, AI-driven research and patent intelligence for your innovation.

Audio output channel state detection device and method

A technology for audio output and channel status, applied in the direction of electrical components, etc., can solve problems such as unsatisfactory audio output efficiency, failure to detect audio output channel faults in time, and lack of fault detection modules for audio output devices

Pending Publication Date: 2022-05-31
FORYOU GENERAL ELECTRONICS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an audio output channel state detection device and method, which solves the problem that the existing audio output device lacks an effective fault detection module and cannot detect the fault of the audio output channel in time, resulting in unsatisfactory audio output efficiency and equipment damage technical problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Audio output channel state detection device and method
  • Audio output channel state detection device and method
  • Audio output channel state detection device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The embodiment of the present invention provides an audio output channel state detection device, such as figure 1 , figure 2 As shown, in this embodiment, it includes MCU1 and switching module 2 (such as figure 1U1), and control signal output module 3, signal acquisition module 4; Switching module 2 is connected with control signal output module 3, signal acquisition module 4, audio playback module 5, audio output module 6, and MCU1 is connected with control signal output module 3 , the signal acquisition module 4 is connected; the switching module 2 includes an audio input terminal ( figure 2 AUDIO_R, AUDIO_L), audio output terminal ( figure 2 in AUDIO_RIGHT, AUDIO_LEFT);

[0042] In an actual application scenario, the fault detection circuit provided in this embodiment can selectively access the audio output circuit according to the actual scenario, and is not limited to this embodiment.

[0043] The audio input end is connected with the audio output module 6 f...

Embodiment 2

[0076] The present invention also provides a method for detecting the state of an audio output channel, using the device for detecting the state of an audio output channel in Embodiment 1, including steps S0-S3:

[0077] S0, according to the state of the audio output channel, pre-calculate the corresponding voltage range, generate a state comparison table and save it in the MCU1.

[0078] For example, in combination with the circuit parameter error ΔV, set the audio output channel state corresponding to the voltage range of the third shared I / O terminal;

[0079] 1) Vd1+ΔV1~Vd2+ΔV2: The audio output channel is normal;

[0080] 2) Less than Vd1+ΔV1: the audio output channel is short-circuited to ground;

[0081] 3) Vd2+ΔV2~Vd3+ΔV3: the audio output channel is open;

[0082] 4) Greater than Vd3+ΔV3: The audio output channel is short-circuited to B+ (the positive pole of the vehicle battery).

[0083] Among them, ΔV1, ΔV2, ΔV3 can be set according to the actual circuit.

[00...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of audio playing, and provides an audio output channel state detection device and method, a switching module is taken as a core, a channel switching mechanism is established, and when an audio signal is normally output, an audio playing module and an audio output module are conducted; when the output channel needs to be subjected to fault detection, the switching module is controlled to conduct the audio playing module and the signal acquisition module for signal acquisition, so that the state of the audio output channel can be detected during startup, output can be closed in time after abnormality is detected, and the situation that noise is output to a post-stage power amplifier to affect user experience is avoided.

Description

technical field [0001] The present invention relates to the technical field of audio playback, and in particular, to an audio output channel state detection device and method. Background technique [0002] In today's wide range of multimedia applications, audio output devices (such as earpieces, microphones, voice chips, etc.) are essential configurations in current terminal equipment, such as making calls, sending voice, watching movies, listening to music, etc. Audio output devices are frequently used in daily life. Therefore, audio output devices in terminal equipment often fail, affecting the effect of audio playback. [0003] Audio output is widely used in various electronic products, such as vehicle multimedia, TV, power amplifier, etc. At present, the commonly used circuit only adds a mute control circuit at the output to realize the output mute control; but if the output is short-circuited, the sound cannot be muted, resulting in problems such as current sound in th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04R29/00
CPCH04R29/00
Inventor 钟健宽李炳光
Owner FORYOU GENERAL ELECTRONICS