Optical electro-mechanical hearing devices with separate power and signal components
A device to transmit an audio signal comprises at least one light source configured to transmit the audio signal with at least one wavelength of light. At least one detector is configured to detect the audio signal and generate at least one electrical signal in response to the at least one wavelength of light. A transducer is supported with and configured to vibrate at least one of an eardrum, an ossicle or a cochlea. Active circuitry is coupled to the transducer to drive the transducer in response to the at least one electrical signal, so as to provide the user with high quality sound.
1. A device to transmit an audio signal, the device comprising:
at least one electromagnetic energy source configured to transmit the audio signal using an electromagnetic signal;
at least one electromagnetic signal detector configured to detect the audio signal and generate at least one electrical signal in response to the detected audio signal;
an output transducer assembly supported on and configured to vibrate an eardrum wherein the output transducer assembly is driven in response to the at least one electrical signal; and
circuitry configured to receive the audio signal and to transmit the audio signal with a modulated signal, wherein power for the output transducer assembly is transmitted with the electromagnetic signal;
wherein the circuitry is further configured to determine a first energy of the audio signal and a second energy of the audio signal, the circuitry configured to provide a first bias to the modulated signal in response to the first energy of the audio signal and to provide a second bias to the modulated signal in response to the second energy of the audio signal, the first bias different from the second bias in order to accommodate substantially different power consumption of the output transducer assembly in response to the first energy different from the second energy.
2. The device of claim 1 , wherein the output transducer assembly comprises at least one of a piezo electric transducer, a flex tensional transducer, a wire coil or a magnet.
3. The device of claim 1 , wherein the circuitry is configured to receive the audio signal from an input transducer.
4. The device of claim 1 , wherein the circuitry is coupled to an input configured to receive the audio signal, the circuitry is coupled to the at least one electromagnetic energy source, and the circuitry is configured to adjust an output of the at least one electromagnetic energy source to power the output transducer assembly in response to the audio signal.
5. The device of claim 4 , wherein the circuitry is configured measure the audio signal to determine one or more of the first energy or the second energy of the audio signal and to adjust an amount of energy transmitted with the at least one electromagnetic energy source in response to the determined one or more of the first energy or the second energy of the audio signal.
6. The device of claim 5 , wherein the circuitry is configured to adjust at least one of a DC bias or an amplitude of pulses of the at least one electromagnetic energy source in response to the audio signal to power the circuitry.
7. The device of claim 6 , wherein the circuitry comprises a sound processor configured to measure the audio signal and to adjust the output of the at least one electromagnetic energy source to power the circuitry in response to the audio signal.
8. The device of claim 1 , wherein the first or second bias is increased in response to an increase in the first or second energy of the audio signal.
9. The device of claim 1 , wherein the at least one electromagnetic energy detector converts electromagnetic energy into electrical energy and the output transducer assembly converts the electrical energy into mechanical energy.
10. The device of claim 9 , wherein the mechanical energy is vibration.