Patent ID: 11943382
Assignee: MOTOROLA SOLUTIONS, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An audio receiver for a converged portable radio, comprising:
a baseband processor (BP) processor for generating digital BP audio;
a BP codec coupled to the BP processor, the BP codec including a D/A for converting the digital BP audio to a BP analog audio output signal;
an AP processor for generating digital AP audio;
an AP codec coupled to the AP processor, the AP codec including a D/A for converting the digital AP audio to an AP analog audio output signal;
an audio switch system comprising:
a BP audio switch having a BP audio input and an enable/disable input; and
an applications processor (AP) audio switch having an AP audio input and an enable/disable input;
BP control logic for selectively enabling and disabling the BP audio switch in response to operational status of both the AP processor and the BP processor;
AP control logic for selectively enabling and disabling the AP audio switch in response to operational status of both the AP processor and the BP processor;

an audio power amplifier for receiving the audio output from one or more of the enabled BP audio switch and/or AP audio switch;
a single speaker coupled to the output of the audio power amplifier; and
wherein a receive audio signal is received at the AP and the BP during power up of the portable radio, and the BP powers up faster than the AP, the switching enabling BP audio to play out until the AP powers up; and
when the AP powers up, then AP and BP audio are played out of the speaker in a mixed audio mode for a predetermined time.