Antenna for miniature wireless devices and improved wireless earphones supported entirely by the ear canal

• US 7,555,134 B2
• Filed: 08/31/2007
• Issued: 06/30/2009
• Est. Priority Date: 09/01/2006
• Status: Expired due to Fees

• Current Assignee: Etymotic Research Incorporated
• Original Assignee: Etymotic Research Incorporated
• Inventors: Drambarean, Viorel, Milam, Timothy, Friesema, David Michael, Kodama, Kelly, Dunn, William Frank, Killion, Mead
• Primary Examiner(s): Ensey; Brian
• Application Number:
  US11/848,802
• Publication Number:
  US 20080056526A1
• Time in Patent Office: 669 Days
• Field of Search: 381/23.1, 381/79, 381/309, 381/311, 381/312, 381/315, 381/322, 381/324, 381/328, 381/370, 381/374, 381/380, 381/384
• US Class Current: 381/309
• CPC Class Codes: H04R 1/1016 Earpieces of the intra-aural type
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones
• CPC Class Codes: H04R 2499/11 Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
• CPC Class Codes: H04R 5/033 Headphones for stereophonic communication details thereof, e.g. relating to batteries, cables or control elements H04R1/10

Abstract

Wireless earphone systems provide earphones configured to be supported entirely by the ear canals of the wearer and to provide stereophonic reproduction of sound to the wearer based on a two-channel stereophonic signal from a transceiver that is attachable to a device. Certain systems include earphones configured such that channel reception can be switched between the earphones. Certain systems include an earphone that includes: a housing; a ground plane comprising circuitry; and a multi-segmented antenna configured to receive a signal from a transceiver, wherein the antenna and the ground plane are disposed within the housing, wherein the antenna is substantially parallel to the ground plane, and wherein the antenna and the ground plane are separated by a distance.

Claims

1. A wireless earphone system comprising:

a transceiver configured to wirelessly transmit a two-channel stereophonic signal;

a first earphone comprising a first tip configured to be inserted into a first ear canal of a wearer, wherein the first earphone is configured to receive a first channel of the two-channel stereophonic signal from the transceiver, and wherein the first earphone is configured to be supported entirely by the first ear canal of the wearer when the first tip is inserted into the first ear canal; and

a second earphone comprising a second tip configured to be inserted into a second ear canal of the wearer, wherein the second earphone is configured to receive a second channel of the two-channel stereophonic signal from the transceiver, and wherein the second earphone is configured to be supported entirely by the second ear canal of the wearer when the second tip is inserted into the second ear canal,

wherein the first earphone and the second earphone together provide stereophonic reproduction of sound to the wearer based on the two-channel stereophonic signal from the transceiver when the tips are inserted into the ear canals of the wearer, and

wherein at least one of the first earphone and the second earphone excludes external noise greater than thirty decibels from entering an ear canal of the wearer when the earphone tip is inserted into the ear canal such that the ear canals are substantially acoustically sealed.

2. The system of claim 1, wherein at least one of the first earphone and the second earphone includes a housing with an external volume that is about 7700 cubic millimeters or less.

3. The system of claim 1, wherein at least one of the first earphone and the second earphone weigh 14 grams or less.

4. The system of claim 1, wherein at least one of the first earphone and the second earphone further includes:

a housing;

a ground plane comprising circuitry; and

a multi-segmented antenna configured to receive the two-channel stereophonic signal from the transceiver,

wherein the antenna and the ground plane are disposed within the housing, wherein the antenna is substantially parallel to the ground plane, and wherein the antenna and the ground plane are separated by a distance that is about 5 millimeters or less.

5. The system of claim 1, wherein the first earphone and the second earphone together provide moderate high-fidelity stereophonic reproduction of sound to the wearer based on the two-channel stereophonic signal from the transceiver when the tips are inserted into the ear canals of the wearer.

6. The system of claim 1, wherein the first earphone and the second earphone together provide true high-fidelity stereophonic reproduction of sound to the wearer based on the two-channel stereophonic signal from the transceiver when the tips are inserted into the ear canals of the wearer such that the ear canals are substantially acoustically sealed.

7. The system of claim 1, wherein the first earphone and the second earphone are configured such that channel reception can be switched so that the first earphone receives the second channel of the two-channel stereophonic signal and the second earphone receives the first channel of the two-channel stereophonic signal.

8. The system of claim 1, wherein the transceiver is configured to be attachable to a portable device.

9. A wireless earphone system comprising:

a transceiver configured to wirelessly transmit a two-channel stereophonic signal;

a first earphone comprising a first tip configured to be inserted into a first ear canal of a wearer, wherein the first earphone is configured to receive a first channel of the two-channel stereo signal from the transceiver; and

a second earphone comprising a second tip configured to be inserted into a second ear canal of the wearer, wherein the second earphone is configured to receive a second channel of the two-channel stereo signal from the transceiver,

wherein the first earphone and the second earphone are configured such that channel reception can be switched so that the first earphone receives the second channel of the two-channel stereo signal and the second earphone receives the first channel of the two-channel stereo signal,

wherein the first earphone and the second earphone together provide stereophonic reproduction of sound to a wearer based on the two-channel stereophonic signal from the transceiver when the earphone tips are inserted into the ear canals of the wearer, and

wherein at least one of the first earphone and the second earphone excludes external noise greater than thirty decibels from entering an ear canal of the wearer when the earphone tip is inserted into the ear canal such that the ear canals are substantially acoustically sealed.

10. The system of claim 9, wherein the earphones are supported entirely by the ear canals when the tips are inserted into the ear canals of the wearer.

11. The system of claim 9, wherein at least one of the first earphone and the second earphone further includes:

a housing;

a ground plane comprising circuitry; and

a multi-segmented antenna configured to receive the two-channel stereophonic signal from the transceiver,

wherein the antenna and the ground plane are disposed within the housing, wherein the antenna is substantially parallel to the ground plane, and wherein the antenna and the ground plane are separated by a distance that is about 5 millimeters or less.

12. The system of claim 9, wherein the first earphone and the second earphone together provide moderate high-fidelity stereophonic reproduction of sound to the wearer based on the two-channel stereophonic signal from the transceiver when the tips are inserted into the ear canals of the wearer.

13. The system of claim 9, wherein the first earphone and the second earphone together provide true high-fidelity stereophonic reproduction of sound to the wearer based on the two-channel stereophonic signal from the transceiver when the tips are inserted into the ear canals of the wearer such that the ear canals are substantially acoustically sealed.

14. The system of claim 9, wherein the transceiver is configured to be attachable to a portable device.

15. A wireless earphone system comprising:

a transceiver configured to wirelessly transmit a signal; and

an earphone comprising;

a tip configured to be inserted into an ear canal of a wearer;

a housing;

a ground plane comprising circuitry; and

a multi-segmented antenna configured to receive the signal from the transceiver,

wherein the antenna and the ground plane are disposed within the housing, wherein the antenna is substantially parallel to the ground plane, and wherein the antenna and the ground plane are separated by a distance that is 5 millimeters or less, and

wherein the ground plane is disposed at a first end of the housing, wherein certain portions of the circuitry protrude beyond the ground plane, and wherein the antenna follows a tortuous path around the portions of the circuitry protruding beyond the ground plane.

16. The system of claim 15, wherein the ground plane is disposed at a first end of the housing, wherein certain portions of the circuitry protrude beyond the ground plane, and wherein the antenna is disposed within the housing such that an upper surface of the antenna is at the same height or below the top height of the portions of the circuitry protruding beyond the ground plane, thereby allowing the antenna to be disposed within the housing without requiring an increase in the volume of the housing.

17. The system of claim 15, wherein the circuitry includes at least one of:

a printed circuit board, a switch, a light emitting diode, and a charging socket.

18. The system of claim 15, wherein the antenna is c-shaped.

19. The system of claim 15, wherein the antenna has a total physical length that is about 57 millimeters or less and has an effective length that is about 32 millimeters or more.

20. The system of claim 15, wherein the earphone further includes a contact member configured to be attachable to the antenna, wherein during assembly of the earphone, the contact member guides antenna placement in the earphone.

21. The system of claim 15, wherein the housing has an external volume that is about 7700 cubic millimeters or less.

22. A wireless earphone system comprising:

a transceiver configured to wirelessly transmit a signal; and

an earphone comprising;

a tip configured to be inserted into an ear canal of a wearer;

a housing;

a ground plane comprising circuitry; and

a multi-segmented antenna configured to receive the signal from the transceiver,

wherein the antenna and the ground plane are disposed within the housing, wherein the antenna is substantially parallel to the ground plane, and wherein the antenna and the ground plane are separated by a distance that is 5 millimeters or less, and

wherein the antenna has a total physical length that is about 57 millimeters or less and has an effective length that is about 32 millimeters or more.

23. The system of claim 22, wherein the ground plane is disposed at a first end of the housing, wherein certain portions of the circuitry protrude beyond the ground plane, and wherein the antenna is disposed within the housing such that an upper surface of the antenna is at the same height or below the top height of the portions of the circuitry protruding beyond the ground plane, thereby allowing the antenna to be disposed within the housing without requiring an increase in the volume of the housing.

24. The system of claim 22, wherein the ground plane is disposed at a first end of the housing, wherein certain portions of the circuitry protrude beyond the ground plane, and wherein the antenna follows a tortuous path around the portions of the circuitry protruding beyond the ground plane.

25. The system of claim 22, wherein the circuitry includes at least one of:

a printed circuit board, a switch, a light emitting diode, and a charging socket.

26. The system of claim 22, wherein the antenna is c-shaped.

27. The system of claim 22, wherein the earphone further includes a contact member configured to be attachable to the antenna, wherein during assembly of the earphone, the contact member guides antenna placement in the earphone.

28. The system of claim 22, wherein the housing has an external volume that is about 7700 cubic millimeters or less.