Wireless Earplug with Improved Sensitivity and Form Factor
First Claim
Patent Images
1. A wireless communications earplug for use with a magnetic field transmitter, comprising:
- a) a receiver comprising a coil of wire wound upon a bobbin of magnetic material; and
b) a speaker having a case at least partially made of magnetic material, an acoustic output and an electrical input coupled to the wire of the receiver;
wherein the bobbin of the receiver is mounted in sufficiently close proximity to the case of the speaker such that a measured inductance of the coil of the receiver is increased compared to an inductance of the coil of the receiver when the receiver is not mounted to the speaker, and the receiver is oriented such that flux lines passing through the speaker are directed to pass through the coil of the receiver.
1 Assignment
0 Petitions
Accused Products
Abstract
An improved wireless communications earplug for use with a magnetic field transmitter. The wireless earplug has a receiver made of a coil of wire on a magnetic bobbin, mounted in close proximity or in contact with a magnetic case of a speaker. The magnetic case of the speaker serves to increase the magnetic flux through the receiver and improves the efficiency of the earplug. The speaker is acoustically coupled to an eartip, and the earplug may be molded into a custom earplug body.
-
Citations
24 Claims
-
1. A wireless communications earplug for use with a magnetic field transmitter, comprising:
-
a) a receiver comprising a coil of wire wound upon a bobbin of magnetic material; and b) a speaker having a case at least partially made of magnetic material, an acoustic output and an electrical input coupled to the wire of the receiver; wherein the bobbin of the receiver is mounted in sufficiently close proximity to the case of the speaker such that a measured inductance of the coil of the receiver is increased compared to an inductance of the coil of the receiver when the receiver is not mounted to the speaker, and the receiver is oriented such that flux lines passing through the speaker are directed to pass through the coil of the receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A wireless communications earplug, comprising:
-
a) a receiver comprising a coil of wire wound upon a bobbin; and b) a speaker having an acoustic output and an electrical input connected to the coil of wire of the receiver; wherein the speaker is located at least partially under the tragus and the receiver is located at least partially in the concha of a human ear. - View Dependent Claims (11, 12, 13, 14, 15)
-
-
16. A communications system comprising:
-
a) a magnetic field transmitter for transmitting in the audio frequency spectrum; b) a receiver comprising a coil of wire wound upon a bobbin; and c) a speaker having an acoustic output and an electrical input coupled to the wire of the receiver; wherein the speaker is located at least partially under the tragus and the receiver is located at least partially in the concha of a human ear and the speaker is connected to the receiver through passive electrical components. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
-
Specification