Temporal alignment of codec data with wireless local area network RF slots
View Patent ↗A wireless local area network (WLAN) transceiving integrated circuit services voice communications in a WLAN with at least one other WLAN device. The WLAN transceiving integrated circuit includes a WLAN interface, an input buffer, a transcoder, and a processor. The WLAN interface wirelessly communicates with the at least one WLAN device to receive packetized audio data from the at least one WLAN device. The input buffer operably couples to the WLAN interface and receives the packetized audio data from the WLAN interface. The transcoder converts the packetized audio data to Pulse Code Modulated (PCM) audio data and outputs the PCM audio data to a coupled audio COder/DECoder (CODEC) such that the PCM audio data is substantially temporally aligned with Radio Frequency (RF) slots of the WLAN interface.
1. A method for processing packetized audio data by a receiving wireless device comprising:
receiving the packetized audio data from a transmitting wireless device by a radio transceiver of the receiving wireless device;
generating a synchronization signal that is substantially temporally aligned with Radio Frequency RF slots of the transmitting wireless device;
converting the packetized audio data to time divided streamed audio data by processing circuitry of the receiving wireless device;
outputting the time divided streamed audio data from the data converter to an audio Coder/DECoder of the receiving wireless device such that the time divided streamed audio data is substantially temporally aligned with the synchronization signal; and
adjusting timing of the synchronization signal when a timing offset between the synchronization signal and a corresponding RF slot of the transmitting wireless device compares unfavorably to a timing offset threshold.
2. The method of claim 1 , further comprising outputting a synchronization signal that is substantially temporally aligned with the RF slots of the transmitting wireless device.
3. The method of claim 1 , wherein the time divided streamed audio data comprises Time Division Multiplexed (TDM) Pulse Code Modulated (PCM) audio data.
4. The method of claim 3 , wherein the synchronization signal comprises PCM synchronization pulses.
5. The method of claim 1 , wherein the time divided streamed audio data comprises Time Division Multiplexed (TDM) audio data.
6. The method of claim 1 , wherein the packetized audio data is in a Wireless Personal Area Network data format.
7. The method of claim 6 , wherein the Wireless Personal Area Network data format is a Bluetooth Specification data format.
8. The method of claim 1 , further comprising:
converting the time divided streamed audio data audio data to analog audio data;
converting the analog audio data to an audio signal; and
presenting the analog audio signal to a user.
9. A wireless device comprising:
a wireless interface operable to wirelessly communicate with a transmitting wireless device to receive packetized audio data from the transmitting wireless device;
an input buffer coupled to the wireless interface that receives the packetized audio data from the wireless interface;
a transcoder coupled to the input buffer that receives the packetized audio data from the input buffer, that converts the packetized audio data to time divided streamed audio data, and that outputs the time divided streamed audio data to a coupled audio COder/DECoder (CODEC);
wherein the transcoder is operable to output the time divided streamed audio data to the audio CODEC such that the time divided streamed audio data is substantially temporally aligned with Radio Frequency (RF) slots serviced by the wireless interface; and
wherein the transcoder is further operable to adjust timing of the synchronization signal when a timing offset between the synchronization signal and a corresponding RF slot of the wireless interface compares unfavorably to a timing offset threshold.
10. The wireless device of claim 9 , wherein the transcoder is further operable to output a synchronization signal that is substantially temporally aligned with the RF slots of the transmitting wireless device.
11. The wireless device of claim 10 , wherein the time divided streamed audio data is substantially temporally aligned with the synchronization signal.
12. The wireless device of claim 9 , wherein the time divided streamed audio data comprises Time Division Multiplexed (TDM) Pulse Code Modulated (PCM) audio data.
13. The wireless device of claim 12 , wherein the synchronization signal comprises PCM synchronization pulses.
14. The wireless device of claim 9 , wherein the time divided streamed audio data comprises Time Division Multiplexed (TDM) audio data.
15. The wireless device of claim 9 , wherein the packetized audio data is in a Wireless Personal Area Network data format.
16. The wireless device of claim 15 , wherein the Wireless Personal Area Network data format is a Bluetooth Specification data format.
17. A method for processing packetized audio data by a receiving wireless device comprising:
receiving the packetized audio data from a transmitting wireless device by a radio transceiver of the receiving wireless device;
converting the packetized audio data to time divided streamed audio data by processing circuitry of the receiving wireless device;
outputting the time divided streamed audio data from the data converter an audio Coder/DECoder of the receiving wireless device such that the time divided streamed audio data is substantially temporally aligned with Radio Frequency (RF) slots of the transmitting wireless device;
outputting a synchronization signal that is substantially temporally aligned with the RF slots of the transmitting wireless device; and
adjusting timing of the synchronization signal when a timing offset between the synchronization signal and a corresponding RF slot of the transmitting wireless device compares unfavorably to a timing offset threshold.