Method and device to automatically identify a pin microphone and a grounding pin of an audio interface, and electronic signature token

摘要

1 / 1 Summary u00e2u20acu0153mu00e3u2030todo and device to automatically identify a pin microphone and a grounding pin of an interface of u00e3ufffdudio, and token of signature eletru00e3 "nicau00e2u20acufffd mu00e3todo, device and tool for identificau00e3u00a7u00e3u00a3o automu00e3ti signature eletru00e3u00b4nica The CA of a pin microphone and a grounding pin of an interface of u00e3udio.The mu00e3todo comprises: if the absolute value of a diferenu00e3u00a7a the voltage between a first pin and a second pin is determined to be smaller than a first threshold value, entu00e3u00a3o, nu00e3u00a3o execute a operau00e3u00a7u00e3u00a3o of identificau00e3u00a7u00e3u00a3o; and, if the absolute value of the voltage between the diferenu00e3u00a7a The first pin and the second pin is greater than or equal to a second threshold value, entu00e3u00a3o,To determine the types of the first pin and the second pin of the interface of u00e3udio by means of positivity / negativity of diferenu00e3u00a7a of voltage, where the second threshold value becomes larger than the first threshold value.