Wireless cellular telephone with audio codec

摘要

A wireless cellular telephone with an audio codec for converting digital audio signals to analog audio signals. The audio codec comprises two digital audio bus interfaces for coupling to respective digital audio buses, and a digital-only signal path between the two digital audio bus interfaces, such that no analog processing of the audio signals occurs in the digital-only signal path.

主权项

1. A wireless cellular telephone comprising:
a communications processor for processing a telephony call; an applications processor for processing digital audio signals; a wireless codec for wirelessly communicating audio data with a wireless peripheral device; an audio codec for converting digital audio signals to analog audio signals; a first digital audio bus between the audio codec and the communications processor, for carrying digital audio signals from the communications processor to the audio codec and carrying digital audio signals from the audio codec to the communications processor; a second digital audio bus between the audio codec and the applications processor, for carrying digital audio signals from the applications processor to the audio codec and carrying digital audio signals from the audio codec to the applications processor; and a third digital audio bus, separate from the first digital audio bus, between the audio codec and the wireless codec, for carrying digital audio signals from the wireless codec to the audio codec and carrying digital audio signals from the audio codec to the wireless codec.