Duplex audio for mobile communication device and accessory

摘要

Duplex audio is provided for a mobile communication device and an accessory. In some embodiments, the accessory can selectably operate in a duplex audio mode, concurrently sending audio to and receiving audio from the mobile communication device, or in another audio mode. In duplex audio mode, the accessory can enable its internal audio processing operations (e.g., echo cancellation) while the mobile communication device disables its corresponding internal operations or vice versa. The mobile communication device can control when the accessory transitions into and/or out of duplex audio mode.

主权项

1. A method of operating an accessory, the method comprising:
communicating, by the accessory to a mobile communication device, capabilities of the accessory, the capabilities including an option to provide an input audio signal to the mobile communication device through an audio input path concurrently with receiving an output audio signal from the mobile communication device through an audio output path; in response to receiving an initiation notification for a telephone call from the mobile communication device while concurrently receiving the output audio signal through the audio output path:
enabling the audio input path by the accessory;receiving an input audio signal by the accessory from an input audio source; anddelivering the input audio signal on the audio input path by the accessory; and in response to receiving a termination notification for the telephone call from the mobile communication device, disabling the audio input path by the accessory.