In-flight entertainment wireless audio transmitter/receiver system

• US 20060270373A1
• Filed: 05/27/2005
• Published: 11/30/2006
• Est. Priority Date: 05/27/2005
• Status: Abandoned Application

• Current Assignee: Nasaco Electronics Pte Limited
• Original Assignee: Nasaco Electronics Pte Limited
• Inventors: So, Yan Kwan
• Application Number:
  US11/139,727
• Publication Number:
  US 20060270373A1
• Time in Patent Office: Days
• US Class Current: 455/306
• CPC Class Codes: H04B 1/205 with control bus for exchanging commands between units
• CPC Class Codes: H04B 5/0012 using capacitive coupling
• CPC Class Codes: H04B 5/22 Capacitive coupling
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F

Abstract

A wireless in-flight entertainment distribution apparatus distributes audio signals within an aircraft. A connector receives an audio signal that is converted to digital data words. The digital data words are then collected into groups to form data packets which then formed into data frames. Transmission channels are chosen to have at least one fundamental frequency which is then modulated with the data frames received. The modulated fundamental frequency is amplified to drive a transducer such as an antenna to generate a transmission signal through a transmission media. The wireless in-flight entertainment distribution system further receives the transmission signal from the transmission media. The transmission signal is then demodulated, depacketized, and decoded to recover the audio signal. The recovered audio signal is then transmitted to the speaker. The in-flight distribution apparatus adheres to the Bluetooth protocol for the transmission and reception of the digitized audio signal.

Claims

1. A digital wireless communication system for the communication of at least one analog signal from at least one analog source to at least one analog signal reproduction device, said digital wireless communication system comprising:

a connector having a plurality of terminals wherein at least one of said plurality of terminals is in contact with said analog source to receive said analog signal;

a transmission apparatus comprising;

a converting device in communication with said connector to acquire said analog signal for conversion to digital data words representing an amplitude of said analog signal at periodic intervals,

a packet forming device in communication with said converting device for collecting groups of said digital data words into data packets,

a frame formatting device in communication with said packet forming device for forming said data packets into data frames having synchronization, control, error detection blocks appended to said data packets,

a channel selecting device for choosing a transmission channel having at least one fundamental frequency on which said transmission device transmits said data frames,

a modulating device in communication with said channel selecting device to receive said fundamental frequency for modulating with said data frames received from said frame formatting device,

driving device in communication with said modulating device to receive said fundamental frequency modulated with said data frames, amplifying said fundamental frequency modulated with said data frames, and

a transducer in communication with said driving device to receive said amplified fundamental frequency modulated with said data frames, said amplified fundamental frequency modulated with said data frames generating a transmission signal through a transmission media.

2. The digital wireless communication system of claim 1 where in said connector has at least one terminal that is in contact to receive a power supply voltage from a power supply voltage source associated with said analog source.

3. The digital wireless communication system of claim 2 further comprising a power supply conditioning device in communication with said connector to receive and condition said power supply voltage for providing energy to said transmission apparatus.

4. The digital wireless communication system of claim 1 wherein said transmission channel is an RF band having multiple sub-channels that are periodically changed to transmit the data frames on different sub-channels at different times to prevent interference from other digital wireless communication systems.

5. The digital wireless communication system of claim 1 wherein the transmission apparatus adheres to the Bluetooth protocol.

6. The digital wireless communication system of claim 1 wherein the transducer is an antenna and the transmission signal is a radio frequency electromagnetic emission.

7. The digital wireless communication system of claim 1 wherein the transducer is a magnetic coupling device and the transmission signal is a magnetic field.

8. The digital wireless communication system of claim 1 wherein the transducer is a capacitive coupling device and the transmission signal is an electrical field.

9. The digital wireless communication system of claim 1 wherein the analog source is an in-flight entertainment system on board an aircraft.

10. The digital wireless communication system of claim 1 further comprising a receiving apparatus for receiving said transmission signal from said transmission media, for demodulating said transmission signal, for depacketizing and decoding to recover said analog signal for transmission to said analog signal reproduction device.

11. The digital wireless communication system of claim 1 wherein said analog signal is an audio signal and said analog signal reproduction device is at least one speaker mounted in a headset.

12. A wireless in-flight entertainment distribution system incorporated within an aircraft comprising:

an in-flight entertainment distribution apparatus for the communication of a plurality of audio signals;

a wireless communication apparatus in communication with said in-flight distribution apparatus for communication of said audio signal to a headphone, said wireless communication apparatus comprising;

a connector having a plurality of terminals wherein at least one of said plurality of terminals is in contact with said audio source to receive said audio signal;

a transmission apparatus comprising;

a converting device in communication with said connector to acquire said audio signal for conversion to digital data words representing an amplitude of said audio signal at periodic intervals,

a packet forming device in communication with said converting device for collecting groups of said digital data words into data packets,

a frame formatting device in communication with said packet forming device for forming said data packets into data frames having synchronization, control, error detection blocks appended to said data packets,

a channel selecting device for choosing a transmission channel having at least one fundamental frequency on which said transmission device transmits said data frames,

a modulating device in communication with said channel selecting device to receive said fundamental frequency for modulating with said data frames received from said frame formatting device,

driving device in communication with said modulating device to receive said fundamental frequency modulated with said data frames, amplifying said fundamental frequency modulated with said data frames, and

a transducer in communication with said driving device to receive said amplified fundamental frequency modulated with said data frames, said amplified fundamental frequency modulated with said data frames generating a transmission signal through a transmission media.

13. The wireless in-flight entertainment distribution system of claim 12 where in said connector has at least one terminal that is in contact to receive a power supply voltage from a power supply voltage source associated with said audio source.

14. The wireless in-flight entertainment distribution system of claim 12 further comprising a power supply conditioning device in communication with said connector to receive and condition said power supply voltage for providing energy to said transmission apparatus.

15. The wireless in-flight entertainment distribution system of claim 12 wherein said transmission channel is an RF band having multiple sub-channels that are periodically changed to transmit the data frames on different sub-channels at different times to prevent interference from other wireless in-flight entertainment distribution systems.

16. The wireless in-flight entertainment distribution system of claim 12 wherein the transmission apparatus adheres to the Bluetooth protocol.

17. The wireless in-flight entertainment distribution system of claim 12 wherein the transducer is an antenna and the transmission signal is a radio frequency electromagnetic emission.

18. The wireless in-flight entertainment distribution system of claim 12 wherein the transducer is a magnetic coupling device and the transmission signal is a magnetic field.

19. The wireless in-flight entertainment distribution system of claim 12 wherein the transducer is a capacitive coupling device and the transmission signal is an electrical field.

20. The wireless in-flight entertainment distribution system of claim 12 wherein the audio source is an in-flight entertainment system on board an aircraft.

21. The wireless in-flight entertainment distribution system of claim 12 further comprising a receiving apparatus for receiving said transmission signal from said transmission media, for demodulating said transmission signal, for depacketizing and decoding to recover said audio signal for transmission to said headset.

24. The in-flight entertainment wireless communication apparatus of claim 21 further comprising a power supply conditioning device in communication with said connector to receive and condition said power supply voltage for providing energy to said transmission apparatus.

22. An in-flight entertainment wireless communication apparatus in communication with an in-flight distribution system for communication of one of a plurality of audio signals to a headphone, said wireless communication apparatus comprising:

a connector having a plurality of terminals wherein at least one of said plurality of terminals is in contact with said in-flight distribution system to receive said audio signal;

a transmission apparatus in connected to said connector and comprising;

a converting device in communication with said connector to acquire said audio signal for conversion to digital data words representing an amplitude of said audio signal at periodic intervals,

a packet forming device in communication with said converting device for collecting groups of said digital data words into data packets,

a frame formatting device in communication with said packet forming device for forming said data packets into data frames having synchronization, control, error detection blocks appended to said data packets,

a channel selecting device for choosing a transmission channel having at least one fundamental frequency on which said transmission device transmits said data frames,

a modulating device in communication with said channel selecting device to receive said fundamental frequency for modulating with said data frames received from said frame formatting device,

driving device in communication with said modulating device to receive said fundamental frequency modulated with said data frames, amplifying said fundamental frequency modulated with said data frames, and

a transducer in communication with said driving device to receive said amplified fundamental frequency modulated with said data frames, said amplified fundamental frequency modulated with said data frames generating a transmission signal through a transmission media.

23. The in-flight entertainment wireless communication apparatus of claim 22 where in said connector has at least one terminal that is in contact to receive a power supply voltage from a power supply voltage source associated with said in-flight distribution system.

25. The in-flight entertainment wireless communication apparatus of claim 22 wherein said transmission channel is an RF band having multiple sub-channels that are periodically changed to transmit the data frames on different sub-channels at different times to prevent interference from other in-flight entertainment wireless communication apparatus.

26. The in-flight entertainment wireless communication apparatus of claim 22 wherein the transmission apparatus adheres to the Bluetooth protocol.

27. The in-flight entertainment wireless communication apparatus of claim 22 wherein the transducer is an antenna and the transmission signal is a radio frequency electromagnetic emission.

28. The in-flight entertainment wireless communication apparatus of claim 22 wherein the transducer is a magnetic coupling device and the transmission signal is a magnetic field.

29. The in-flight entertainment wireless communication apparatus of claim 22 wherein the transducer is a capacitive coupling device and the transmission signal is an electrical field.

30. The in-flight entertainment wireless communication apparatus of claim 22 wherein the in-flight distribution system is an in-flight entertainment system on board an aircraft.

31. The in-flight entertainment wireless communication apparatus of claim 22 further comprising a receiving apparatus for receiving said transmission signal from said transmission media, for demodulating said transmission signal, for depacketizing and decoding to recover said audio signal for transmission to said headset.

32. A method for wireless communication of an analog signal from an analog source to at least one analog signal reproduction device, said method comprising the steps of:

acquiring said analog signal from said analog source through a connector having a plurality of terminals;

converting said analog signal to digital data words representing an amplitude of said analog signal at periodic intervals,

forming groups of said digital data words into data packets,

formatting said data packets into data frames having synchronization, control, error detection blocks appended to said data packets,

selecting a transmission channel having at least one fundamental frequency on which said transmission device transmits said data frames,

modulating said fundamental frequency with said data frames,

transmitting said fundamental frequency modulated with said data frames from a transducer to a transmission media.

33. The method for wireless communication of an analog signal of claim 32 where in said connector has at least one terminal that is in contact to receive a power supply voltage from a power supply voltage source associated with said analog source.

34. The method for wireless communication of an analog signal of claim 33 further comprising the steps of:

receiving said power supply; and

conditioning said power supply voltage for providing energy for performing said method for wireless communication of an analog signal.

35. The method for wireless communication of an analog signal of claim 32 wherein said transmission channel is an RF band having multiple sub-channels that are periodically changed to transmit the data frames on different sub-channels at different times to prevent interference.

36. The method for wireless communication of an analog signal of claim 32 wherein the transmission apparatus adheres to the Bluetooth protocol.

37. The method for wireless communication of an analog signal of claim 32 wherein the transducer is an antenna and the transmission signal is a radio frequency electromagnetic emission.

38. The method for wireless communication of an analog signal of claim 32 wherein the transducer is a magnetic coupling device and the transmission signal is a magnetic field.

39. The method for wireless communication of an analog signal of claim 32 wherein the transducer is a capacitive coupling device and the transmission signal is an electrical field.

40. The method for wireless communication of an analog signal of claim 32 wherein the analog source is an in-flight entertainment system on board an aircraft.

41. The method for wireless communication of an analog signal of claim 32 further comprising the steps of:

receiving said transmission signal from said transmission media;

demodulating said transmission signal;

depacketizing and decoding said demodulated transmission signal to recover said analog signal;

transmitting said recovered analog signal to said analog signal reproduction device.

42. The method for wireless communication of an analog signal of claim 32 wherein said analog signal is an audio signal and said at least one analog signal reproduction device is at least one speaker mounted in a headset.

45. The method for wireless in-flight entertainment distribution of claim 40 further comprising further comprising the steps of:

receiving said power supply voltage; and

conditioning said power supply voltage for providing energy for performing said method for wireless in-flight entertainment distribution.

43. A method for wireless in-flight entertainment distribution of a plurality of audio signals within an aircraft comprising the steps of:

acquiring the plurality of audio signals from an in-flight entertainment distribution apparatus within said aircraft through a connector having a plurality of terminals wherein at least one of said plurality of terminals is in contact with said audio source to receive said audio signal;

converting said audio signal to digital data words representing an amplitude of said audio signal at periodic intervals;

collecting groups of said digital data words to form data packets;

forming said data packets into data frames having synchronization, control, error detection blocks appended to said data packets;

choosing a transmission channel having at least one fundamental frequency on which said transmission device transmits said data frames,

modulating said fundamental frequency with said data frames received;

amplifying said fundamental frequency modulated with said data frames; and

driving a transducer with said amplified fundamental frequency modulated with said data frames to generate a transmission signal through a transmission media.

44. The method for wireless in-flight entertainment distribution of claim 43 where in said connector has at least one terminal that is in contact to receive a power supply voltage from a power supply voltage source associated with said audio source.

46. The method for wireless in-flight entertainment distribution of claim 43 wherein said transmission channel is an RF band having multiple sub-channels that are periodically changed to transmit the data frames on different sub-channels at different times to prevent interference.

47. The method for wireless in-flight entertainment distribution of claim 43 wherein said method for wireless in-flight entertainment distribution adheres to the Bluetooth protocol.

48. The method for wireless in-flight entertainment distribution of claim 43 wherein the transducer is an antenna and the transmission signal is a radio frequency electromagnetic emission.

49. The method for wireless in-flight entertainment distribution of claim 43 wherein the transducer is a magnetic coupling device and the transmission signal is a magnetic field.

50. The method for wireless in-flight entertainment distribution of claim 43 wherein the transducer is a capacitive coupling device and the transmission signal is an electrical field.

51. The method for wireless in-flight entertainment distribution of claim 43 further comprising the steps of:

receiving said transmission signal from said transmission media;

demodulating said transmission signal;

depacketizing and decoding said demodulated transmission signal to recover said audio signal;

transmitting said recovered audio signal to said speaker.