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Differential audio system supporting single-ended signal and control method

An audio system, single-ended signal technology, applied in sensor parts, sensors, electrical components, etc., can solve problems such as error-prone, signal loopback, and signal easy to receive radio frequency interference, trouble, etc., to solve the problem of noise floor, avoid The effect of radio frequency interference and avoiding signal loopback

Active Publication Date: 2021-06-01
XIAMEN YEALINK NETWORK TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

In practical applications, some application products based on differential audio systems need to connect differential signals with single-ended signals, and also connect with differential signals. At this time, two interfaces usually need to be designed, which will be quite cumbersome for users.
Because for the user, the switching between single-ended signal and differential signal can only be realized by plugging and plugging the port, which is error-prone and very troublesome.
Moreover, if the signal is directly connected to the audio system regardless of the difference between the single-ended and differential signals, then due to the difference in the ground plane between the two audio systems, it is easy to cause signal loopback and the signal is susceptible to radio frequency interference

Method used

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  • Differential audio system supporting single-ended signal and control method

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] see figure 1 , an embodiment of the present invention provides a differential audio system supporting single-ended signals, including an audio access module 20 and a differential signal processing module 10 .

[0024] Wherein, the audio access module 20 includes a P input end, an N input end, a P output end, and an N output end; the differential signal processing module 10 includes a P input end LINE-P and an N input end LINE-N; the The P input of the audio...

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Abstract

The invention discloses a differential audio system supporting a single-ended signal and a control method. The system comprises an audio access module and a differential signal processing module, wherein the audio access module comprises a P input end, an N input end, a P output end and an N output end; the differential signal processing module comprises a P input end and an N input end; and the audio access module is used for receiving an audio signal from the external audio equipment and controlling the working state of the N input end of the differential signal processing module, and is also used for converting a single-ended signal into a differential signal when the audio signal is the single-ended signal. By adopting the embodiment of the invention, the differential audio system can support single-ended signal input, and meanwhile, signal loopback and radio frequency interference are avoided.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a differential audio system supporting single-ended signals and a control method. Background technique [0002] Between two audio systems, audio signal connection methods mainly include the following types: single-ended-single-ended, differential-differential, single-ended-differential, differential-single-ended. In practical application, some application products based on differential audio system need to interface with differential signal and single-ended signal, and also interface with differential signal. At this time, two interfaces usually need to be designed, which will be quite cumbersome for users. Because for the user, the switching between the single-ended signal and the differential signal can only be realized by plugging in and changing the port, which is easy to make mistakes and is very troublesome. Moreover, if the signal is directly connected to the audio syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R3/00
Inventor 李灯
Owner XIAMEN YEALINK NETWORK TECH
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