Multipurpose connector for multiplexing headset interface into high-definition video and audio interface, and handheld electronic device

摘要

The present invention provides a multipurpose connector for multiplexing a headset interface into a high-definition video/audio input interface and a handheld device including the multipurpose connector. The multipurpose connector includes a headset connector, a selecting switch, a high-definition video/audio transceiver, and an audio output module. The headset connector includes a first audio terminal and a second audio terminal. The audio output module is configured to output an audio signal of the headset. The selecting switch includes first and second lines. When the selecting switch communicates with the first line, the first audio terminal and the second audio terminal are coupled to a pair of differential transmission lines respectively, and the pair of differential transmission lines is configured to transmit high-definition video/audio data output by the high-definition video/audio transceiver. When the selecting switch communicates with the second line, the first audio terminal is coupled to the audio output module.

主权项

1. A multipurpose connector for multiplexing a headset interface into a high-definition video/audio input interface, the multipurpose connector comprising:
a headset connector comprising a grounding terminal, an insertion detection pin, a first audio terminal, a second audio terminal, and a third audio terminal; an audio output module configured to output a first audio signal of the headset; a selecting switch comprising a first line and a second line, wherein when the selecting switch communicates with the first line, the first audio terminal and the second audio terminal are coupled to a pair of differential transmission lines respectively, and wherein when the selecting switch communicates with the second line, the first audio terminal is coupled to the audio output module; an audio input module separate from the audio output module and configured to receive a second audio signal of the headset that is separate from the first audio signal, wherein, in response to the selecting switch being in communication with the second line, the first audio terminal is coupled to an output end of a first sound channel of the audio output module, a first one of the second audio terminal and the third audio terminal is coupled to the audio input module, and a second one of the second audio terminal and the third audio terminal is coupled to an output end of a second sound channel of the audio output module; a high-definition video/audio transceiver, wherein the pair of differential transmission lines is configured to transmit high-definition video/audio data output by the high-definition video/audio transceiver; and an insertion detection module, wherein an output end of the insertion detection module is coupled to a main control unit, and the insertion detection module is configured to output an insertion detection signal when a plug is inserted in the headset connector, wherein an input end of a detection signal output module is coupled to the insertion detection pin; wherein the insertion detection pin is attached to the grounding terminal when no plug is inserted in the headset connector and is disconnected from the grounding terminal when the plug is inserted, and a first bias voltage is applied on the insertion detection pin; wherein the detection signal output module is configured to output an insertion detection signal when an absolute value of a difference between a first potential and the first bias voltage is smaller than or equal to a first threshold; and wherein the first potential is a potential of a first coupling point, and the first coupling point is a coupling point between the input end of the detection signal output module and the insertion detection pin.