Wireless gateway for hearing aid
A remote control unit includes an RF transceiver that complies with a Bluetooth® standard and an RF transmitter that does not comply with the Bluetooth® standard, whereby the remote control unit serves as a wireless gateway between Bluetooth® compliant devices and the hearing aid. The hearing aid can further include a transmitter and the remote control unit can further include a receiver, neither of which comply with the Bluetooth® standard. The transmitters operate in the ISM band at low power, minimizing power dissipation within a hearing aid.
1. A hearing aid system comprising in combination:
a) a hearing aid adapted to be placed about a user's ear for amplifying audio signals, the hearing aid including:
i. an electrical power source; and
ii. an RF receiver for receiving radio frequency signals containing audio signals, the RF receiver requiring less than 20 milliwatts of electrical power from the electrical power source of the hearing aid; and
b) a remote control unit for communicating with the hearing aid, the remote control unit including:
i. an electrical power source;
ii. a first RF receiver for receiving RF source signals from at least one RF source device, the RF source signals containing audio signals to be amplified by the hearing aid, the first RF receiver of the remote control unit requiring more than 20 milliwatts of power from the electrical power source of the remote control unit; and
iii. a first RF transmitter for sending radio frequency signals to the RF receiver of the hearing aid, the radio frequency signals sent by the first RF transmitter of the remote control unit including audio signals contained in the RF source signals.
2. A hearing aid system as recited by claim 1 wherein the first RF receiver within the remote control unit receives RF source signals within a first range of frequencies, and wherein the RF receiver of the hearing aid receives radio frequency signals having a frequency higher than the first range of frequencies.
3. A hearing aid system as recited by claim 2 wherein the first RF receiver within the remote control unit receives RF source signals compatible with Bluetooth® communication standards.
4. A hearing aid system as recited by claim 3 wherein the RF receiver of the hearing aid receives radio frequency signals in the ISM band.
5. A hearing aid system as recited by claim 1 wherein:
a) the hearing aid system includes at least a second hearing aid;
b) the remote control unit includes a codec for addressing more than one hearing aid; and
c) each hearing aid includes a codec for detecting that such hearing aid is being addressed by the remote control unit.
6. A hearing aid system as recited by claim 1 wherein:
a) the hearing aid includes an RF transmitter for sending for sending radio frequency signals from the hearing aid to the remote control unit, the RF transmitter of the hearing aid requiring less than 20 milliwatts of electrical power from the electrical power source of the hearing aid; and
b) the remote control unit includes a second RF receiver for receiving radio frequency signals sent by the RF transmitter of the hearing aid.
7. A hearing aid system as recited by claim 6 wherein the second RF receiver of the remote control unit requires less than 20 milliwatts of electrical power from the electrical power source of the remote control unit.
8. A hearing aid system as recited by claim 7 wherein:
a) the first RF receiver within the remote control unit receives RF source signals within a first range of frequencies;
b) the RF receiver of the hearing aid receives radio frequency signals having a frequency higher than the first range of frequencies;
c) the RF transmitter of the hearing aid transmits radio frequency signals having a frequency higher than the first range of frequencies; and
d) the second RF receiver of the remote control unit receives radio frequency signals having a frequency higher than the first range of frequencies.
9. A hearing aid system as recited by claim 8 wherein the first RF receiver within the remote control unit receives RF source signals compatible with Bluetooth® communication standards.
10. A hearing aid system as recited by claim 9 wherein the RF receiver of the hearing aid, and the RF transmitter of the hearing aid, operate in the ISM band.
11. A hearing aid system as recited by claim 9 wherein the RF receiver of the hearing aid, and the RF transmitter of the hearing aid, are not compatible with Bluetooth® communication standards.
12. A hearing aid system as recited by claim 9 wherein the first RF receiver within the remote control unit receives RF source signals compatible with Bluetooth® communication standards.
13. A hearing aid system as recited by claim 12 wherein the RF receiver of the hearing aid receives radio frequency signals in the ISM band.