Headphone socket and method for detecting whether the headphone is inserted in place

Abstract

A headset jack and a method for detecting whether a headset is inserted in position, which relate to the field of electronic technologies. The headset jack includes: a side wall, a bottom part, a clamping component on the side wall, a first detection end at the bottom part, a second detection end on the side wall or at the bottom part, and a membrane switch electrically connected to the second detection end, where the clamping component is configured to clamp a headset plug when the headset plug is inserted into the headset jack; when the headset plug is not inserted in position, the membrane switch is electrically isolated from the first detection end; and the membrane switch is configured to: when the headset plug is inserted in position, generate elastic deformation under a pressure of the headset plug, and be electrically connected to the first detection end, so as to electrically connect the first detection end to the second detection end, and change an electrical characteristic between the first detection end and the second detection end to reflect that the headset plug is inserted in position in the headset jack.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an earphone socket and a method for detecting whether the earphone is inserted in place. Background technique [0002] In an existing portable electronic device, such as a mobile phone, a tablet computer or a media player, the device needs to know the insertion state of the earphone, that is, whether the earphone is inserted into the portable electronic device, and whether it is inserted halfway or fully. After the portable electronic device learns the plug-in status of the earphone, the portable electronic device can perform corresponding operations. For example, start to open the interface between the media player software and the headphone driver software after learning that the headphone is plugged in. In a typical application scenario, the insertion detection of the earphone is implemented by a circuit in the portable electronic device. [0003] Since the earphone plug...

AI Technical Summary

Problems solved by technology

However, there are many types of earphones available, and commonly used earphones include three types of earphones, American standard earphones (LRGM) and national standard earphones (LRMG). It will lead to a very complicated connection state between the earphone plug and the earphone socket during the insertion process, resulting in many different values ​​in the voltage division relationship of the DET point

Therefore, the existing scheme of determining whether the earphone is inserted in place by detecting the voltage division relationship through the circuit requires complex circuit hardware design and software state machine design, which increases the cost of product realization.

Images