Wireless audio system using wireless local area network

• US 7,577,261 B2
• Filed: 10/11/2006
• Issued: 08/18/2009
• Est. Priority Date: 10/13/2005
• Status: Active Grant

• Current Assignee: Realtek Semiconductor Corp.
• Original Assignee: Realtek Semiconductor Corp.
• Inventors: Liu, Yen-Ku, Huang, Jia-Bin
• Primary Examiner(s): Nguyen; David Q
• Application Number:
  US11/548,692
• Publication Number:
  US 20070133817A1
• Time in Patent Office: 1,042 Days
• Field of Search: 370/338, 370/356, 381/315
• US Class Current: 381/77
• CPC Class Codes: H04R 1/005 using digitally weighted transducing elements
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A wireless audio system includes a first device and a second device. The first device includes a first logic and a first WLAN unit coupled to the first logic. The first logic performs audio processing to generate audio data. The first WLAN unit transmits the audio data through a radio frequency channel. The second device includes a second WLAN unit and an audio reproducing unit coupled to the second WLAN unit. The second WLAN unit receives the audio data from the radio frequency channel. The audio reproducing unit generates sound according to the audio data.

Claims

1. A wireless audio system comprising:

a first device comprising;

a first computing unit for performing audio processing to generate audio data; and

a first WLAN unit coupled to the first computing unit, for transmitting the audio data through a radio frequency channel; and

a second device, forming a wireless connection with the first device, the second device comprising;

a second WLAN unit for receiving the audio data from the radio frequency channel; and

an audio reproducing unit coupled to the second WLAN unit, for generating sound according to the audio data;

wherein the first device registers the first WLAN unit as an audio processing unit, and the wireless audio system registers the first WLAN unit and second WLAN unit as an audio in/our interface of the first computing unit.

2. The wireless audio system of claim 1, wherein the first computing unit performs an audio decoding process to generate the audio data.

3. The wireless audio system of claim 2, wherein the audio data generated through the audio decoding process conforms to the format of pulse code modulation.

4. The wireless audio system of claim 3, wherein the first computing unit comprises a central processing unit.

5. The wireless audio system of claim 3, wherein the first computing unit comprises a dedicated audio processing hardware.

6. The wireless audio system of claim 3, wherein the audio reproducing unit comprises a speaker.

7. The wireless audio system of claim 1, wherein the audio data that is transmitted through the radio frequency channel conforms to the format of pulse code modulation.

8. The wireless audio system of claim 7, wherein the first WLAN unit encodes the audio data conforming to the forma of pulse code modulation into at least one WLAN packet for wireless transmission.

9. The wireless audio system of claim 1, wherein the first WLAN unit and the second WLAN unit communicate wirelessly according to the specifications of IEEE 802.11.

10. A wireless audio system comprising:

a first device comprising;

a first computing unit for performing audio processing on audio data; and

a first WLAN unit coupled to the first computing unit, for receiving the audio data from a radio frequency channel; and

a second device, forming a wireless connection with the first device, the second device comprising;

a second WLAN unit for transmitting the audio data through the radio frequency channel; and

an audio capturing unit coupled to the second WLAN unit, for converting sound into the audio data;

wherein the first device registers the first WLAN unit as an audio processing unit, and the wireless audio system registers the first WLAN unit and second WLAN unit as an audio in/out interface of the first computing unit.

11. The wireless audio system of claim 10, wherein the first computing unit performs an audio encoding processing on the audio data.

12. The wireless audio system of claim 11, wherein the audio data on which the audio encoding processing is performed conforms to the format of pulse code modulation.

13. The wireless audio system of claim 12, wherein the first computing unit comprises a central processing unit.

14. The wireless audio system of claim 12, wherein the first computing unit comprises a dedicated audio processing hardware.

15. The wireless audio system of claim 12, wherein the audio capturing unit comprises a microphone.

16. The wireless audio system of claim 10, wherein the audio data that is transmitted through the radio frequency channel conforms to the format of pulse code modulation.

17. The wireless audio system of claim 16, wherein the second WLAN unit encodes the audio data conforming to the formal of pulse code modulation into at least one WLAN packet for wireless transmission.

18. The wireless audio system of claim 10, wherein the first WLAN unit and the second WLAN unit communicate wirelessly according to the specifications of IEEE 802.11.