Wireless transmitter and earphone based on 802.11a/b/g standard

• US 20050233768A1
• Filed: 03/25/2005
• Published: 10/20/2005
• Est. Priority Date: 04/16/2004
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Chen, Shih-Heng, Guo, Gun-Lin
• Application Number:
  US11/090,480
• Publication Number:
  US 20050233768A1
• Time in Patent Office: Days
• US Class Current: 455/557
• CPC Class Codes: H04M 1/6066 including a wireless connection
• CPC Class Codes: H04R 5/033 Headphones for stereophonic communication details thereof, e.g. relating to batteries, cables or control elements H04R1/10
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A wireless transmitter (300) communicates with a wireless earphone (100) to obtain remote communications. The wireless earphone includes: a wireless network card (30′) complying with the 802.11a/b/g standard, for receiving data packets and unpacking them to release digital audio signals; a control processor (20′) connected with the wireless network card, for dealing with the digital audio signals; and a digital-to-analog converter (50) connected with the control processor, for converting the digital audio signals to analog audio signals. The wireless transmitter has a structure similar to that of the wireless earphone, except that the wireless transmitter has an analog-to-digital converter (10) instead of the digital-to-analog converter.

Claims

1. A wireless transmitter complying with the 802.11a/b/g standard, comprising:

an analog-to-digital converter (ADC) for converting analog audio signals to digital audio signals;

a control processor coupled to the ADC for dealing with the digital audio signals and providing destination address data of the digital audio signals; and

a wireless network card coupled to the control processor for packing the digital audio signals and the destination address data;

wherein the wireless network card complies with the 802.11a/b/g standard, and transmits the data packets comprising the digital audio signals and the destination address data.

2. The wireless transmitter in claim 1, wherein the control processor comprises a microcontroller (MCU) for dealing with the digital audio signals.

3. The wireless transmitter in claim 2, wherein the control processor further comprises a flash read-only memory (flash ROM) coupled to the MCU.

4. The wireless transmitter in claim 2, wherein the control processor further comprises a synchronous dynamic random-access memory (SDRAM) coupled to the MCU.

5. The wireless transmitter in claim 2, wherein the control processor further comprises an Inter-IC sound (I2S) interface for connecting the ADC and the MCU.

6. The wireless transmitter in claim 2, wherein the control processor further comprises an interface for connecting the wireless network card and the MCU.

7. The wireless transmitter in claim 6, wherein the interface is a peripheral component interconnect (PCI) interface, a personal computer memory card international association (PCMCIA) interface, a universal serial bus (USB) interface, or a compact flash (CF) interface.

8. The wireless transmitter in claim 2, further comprising a user interface for adjusting volume and switching frequencies of transmission of the data packets.

9. The wireless transmitter in claim 8, wherein the control processor further comprises a general purpose input/output (GPIO) interface for connecting the user interface and the MCU.

10. A wireless earphone complying with the 802.11a/b/g standard, comprising:

a wireless network card for receiving and unpacking data packets in order to release digital audio signals and address data, wherein the wireless network card complies with the 802.11a/b/g standard;

a control processor coupled to the wireless network card for determine whether the data packets are transmitted from a transmitter based on the address data of the data packets, and dealing with the digital audio signals; and

a digital-to-analog converter (DAC) connected to the control processor for converting the digital audio signals to analog audio signals.

11. The wireless earphone in claim 10, wherein the control processor comprises a microcontroller (MCU) for dealing with the digital audio signals.

12. The wireless earphone in claim 11, wherein the control processor further comprises a flash read-only memory (flash ROM) coupled to the MCU.

13. The wireless transmitter in claim 11, wherein the control processor further comprises a synchronous dynamic random-access memory (SDRAM) coupled to the MCU.

14. The wireless earphone in claim 11, wherein the control processor further comprises an interface for connecting the wireless network card and the MCU.

15. The wireless earphone in claim 14, wherein the interface is a peripheral component interconnect (PCI) interface, a personal computer memory card international association (PCMCIA) interface, a universal serial bus (USB) interface, or a compact flash (CF) interface.

16. The wireless earphone in claim 11, further comprising a user interface for adjusting volume and switching frequencies of receipt of the data packets.

17. The wireless earphone in claim 16, wherein the control processor further comprises a general purpose input/output (GPIO) interface for connecting the user interface and the MCU.

18. The wireless earphone in claim 11, wherein the control processor further comprises an Inter-IC sound (I2S) interface for connecting the DAC and the MCU.

19. A method to transmit digitized audio signals between a wireless earphone and a multimedia device, comprising:

retrieving analog audio signals from said multimedia device;

converting said analog audio signals into digital audio signals;

packing said digital audio signals with a predetermined identifier based on a universal wireless digital transmission standard;

transmitting said packed digital audio signals complying with said universal wireless digital transmission standard to said wireless earphone;

unpacking said packed digital audio signals;

verifying said identifier to identify said transmitted digital audio signals;

resuming said analog audio signals from said unpacked digital audio signals in case that said identifier is acceptable; and

playing said analog audio signals in said wireless earphone.

20. The method in claim 19, wherein said universal wireless digital transmission standard is one of standards of Bluetooth, HomeRF, 802.11a, 802.11b and 802.11g.