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Hearing devices/hearing device systems (50, 1000, 1100) with very low or ultra-low power electronics/circuitry (1006, 1114) and methods (2100, 2200, 2300, 2400) utilizing and/or facilitating utilization of very low or ultra-low power electronics/circuitry in hearing devices/hearing device systems.

Titel:	CIC HEARING DEVICE
Link:	View record in USPTO Patent Applications (Volltext)
Veröffentlichung:	2015
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20150256941 Publication Date: September 10, 2015 Appl. No: 14/428797 Application Filed: September 18, 2012 Assignees: PHONAK AG (Stäfa, CH) Claim: 1. A hearing device, comprising: a hearing device core including an acoustic-to-electric transducer or sensor that converts sound into an electrical signal, a receiver, and electronics configured to receive the electrical signal as an input signal and generate an output signal provided to the receiver, the electronics including a variable gain amplifier with input buffering circuitry including a compound transistor, the electronics being configured to bias the compound transistor such that a quiescent current associated with the output signal is limited or controlled; wherein the hearing device core includes a battery that is one or more of rechargeable and constituted of a single battery or a single cell battery. Claim: 2. The hearing device of claim 1, wherein the compound transistor is a Sziklai pair that receives the input signal. Claim: 3. The hearing device of claim 2, wherein the Sziklai pair is combined with a variable resistor and a high pass filter directly in the input stage. Claim: 4. The hearing device of claim 2, wherein the compound transistor includes only two biased transistors. Claim: 5. The hearing device of claim 2, wherein the electronics include a current controlled resistor coupled to the compound transistor. Claim: 6. The hearing device of claim 5, wherein the current controlled resistor includes only one biased transistor. Claim: 7. The hearing device of claim 2, wherein the electronics include an adjustable resistance component or circuitry, the adjustable resistance component or circuitry being configured to facilitate adjusting gain compression and limiting for the variable gain amplifier. Claim: 8. The hearing device of claim 7, wherein the adjustable resistance component or circuitry includes current-controlled adjustable resistance circuitry, a zero biased bipolar transistor, a MOSFET operating in the linear regime, or a feedback circuit emulating a resistor. Claim: 9. The hearing device of claim 2, wherein the electronics include a feedback loop that includes one or more of a DC servo loop, a compression circuit, a high-pass filter, and an adjustable resistor. Claim: 10. The hearing device of claim 2, wherein the electronics include a variable resistance component electrically coupled to the input buffering circuitry. Claim: 11. The hearing device of claim 10, wherein the electronics include a capacitor or a filter between the variable resistance component and the input buffering circuitry. Claim: 12. The hearing device of claim 2, wherein the compound transistor receives the input signal and generates a current, and the electronics include circuitry including an integrated circuit and/or a current mode circuit configured for analog processing of the current. Claim: 13. The hearing device of claim 12, wherein the electronics are configured to bias the compound transistor such that a quiescent current associated with the output signal is limited or controlled. Claim: 14. The hearing device of claim 1, wherein the hearing device core includes a rechargeable battery. Claim: 15. The hearing device of claim 14, wherein the receiver is a low impedance type, with a DC impedance less than 1 kΩ. Claim: 16. The hearing device of claim 1, wherein the hearing device core includes a nonrechargeable battery and the receiver or receiver winding is a high impedance type, with a DC impedance greater than 1 kΩ. Current International Class: 04

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CIC HEARING DEVICE