Disconnection detection device and method

Abstract

The invention discloses a disconnection detection device and a disconnection detection method. The disconnection detection device comprises a jack, a baseband chip, a level detection unit and a state detection unit, wherein the jack comprises a DETECT pin; the level detection unit is used for detecting whether an L AUDIO pin of a plug is connected with the DETECT pin, if the L AUDIO pin of the plug is connected with the DETECT pin, the level detection unit generates a trigger signal and transmits the trigger signal to the baseband chip, and the baseband chip starts the state detection unit after receiving the trigger signal; the state detection unit is used for detecting whether an MIC pin of the plug is connected with the DETECT pin, if the MIC pin of the plug is connected with the DETECT pin, the state detection unit generates a state value and transmits the state value to the baseband chip, and the baseband chip receives the state value and judges whether a call flash or an earphone is accessed through the plug based on the state value. The disconnection detection device and the disconnection detection method have the advantages that complexity of hardware circuits and software is reduced, complete machine cost is lowered, anti-shake time does not need to be considered, identification of the plug is not influenced when the plug is inserted rapidly or slowly, identification is accurate, and generality is strong.

Description

technical field [0001] The invention relates to a detection device and method, in particular to an interruption detection device and method. Background technique [0002] At present, the incoming call flash has the function of indicating some statuses of mobile devices such as mobile phones, such as missed calls, new short messages, and no battery power. And most of the mobile phones that have appeared use the earphone and the incoming call flash to share the same interface. This method needs to strictly distinguish the inserted earphone from the incoming call flash. Now the commonly used detection method is to identify earphones and incoming call flashes by adding a special detection circuit to the hardware of the mobile phone and combining software. This detection method not only takes up a lot of manpower for software development, but also increases the logic complexity of the software. A dedicated ADC interrupt (ADC interrupt is a designer-defined interrupt) detection c...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem in the prior art when detecting whether the inserted plug is an earphone or an incoming electric flash by adding a dedicated ADC interrupt detection circuit on the hardware and identifying it in combination with software, resulting in a large amount of manpower and hardware resources being occupied. Increase the logic complexity of the software and the cost of the whole machine, the versatility is poor, and the use of the ADC interrupt detection circuit needs to consider the anti-shake time, the level is unstable when the plug is inserted, and the error probability of plug recognition increases when the plug is inserted too slowly. , provides an interrupt detection device and method, which has the advantages of reducing the complexity of hardware circuits and software, reducing the cost of the whole machine, cross-platform application, no need to consider anti-shake time and accurate identification, etc.

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