Hearing aid and a method for operating a hearing aid
A hearing aid comprising a housing with a connector enabling an external device to be connected thereto is provided. The connector includes a set of closely spaced electrical terminals operatively connected to at least one internal hearing aid component. The hearing aid also comprises detecting means adapted for determining whether an external device is connected or unconnected to the hearing aid, and the hearing aid is adapted for keeping the set of closely spaced electrical terminals at a substantially equal electrical potential during at least a part of the time periods wherein an external device is unconnected. A method of operating a hearing aid and a program comprising code adapted for operating a hearing aid is also provided.
1. A hearing aid comprising:
a housing comprising a connector with a set of closely spaced electrical terminals operatively connected to at least one internal hearing aid component, said set of electrical terminals being electrically connectable to an external device; and
detecting means adapted to determine whether the external device is connected or unconnected to the bearing aid, said detecting means adapted for controlling said set of closely spaced electrical terminals so as to keep said set of closely spaced electrical terminals at a substantially equal electrical potential during at least a portion of a time period corresponding to the external device being unconnected from the hearing aid.
2. The hearing aid according to claim 1 , wherein the detecting means is responsive to an electrical signal supplied by the external device, wherein the electrical signal is selected from the group consisting of a DC voltage signal, an AC voltage signal or another signal.
3. The hearing aid according to claim 2 , wherein the detecting means further comprises a comparator responsive to said electrical signal.
4. The hearing aid according to claim 3 , wherein said comparator further comprises a MOS transistor, wherein said electrical signal is supplied to a gate terminal of said MOS transistor.
5. The hearing aid according to claim 1 , wherein the detecting means further comprises a mechanical detecting means.
6. The hearing aid according to claims 1 , 2 , 3 , 4 or 5 , wherein said set of closely spaced electrical terminals is kept at said substantially equal electrical potential throughout said time period.
7. The hearing aid according to claims 1 , 2 , 3 , 4 , or 5 , wherein said set of closely spaced electrical terminals forms a portion of a programming interface connector between the external device and the hearing aid.
8. The hearing aid according to claims 1 , 2 , 3 , 4 , or 5 , wherein said set of closely spaced electrical terminals forms a portion of an audio connector between the external device and the hearing aid.
9. A hearing aid comprising:
a housing;
at least one internal hearing aid component;
a programming interface connector comprising:
a set of closely spaced electrical terminals operatively connected to said at least one internal hearing aid component, said set of electrical terminals being electrically connectable to an external device; and
a voltage setting means adapted for keeping said set of closely spaced electrical terminals at a substantially equal DC-voltage.
10. The hearing aid according to claim 9 , said voltage setting means further comprising pull-up or pull-down resistors.
11. The hearing aid according to claim 9 , further comprising a detecting means adapted to determine whether said external device is connected or unconnected to the hearing aid, said detecting means adapted for controlling said voltage setting means so as to keep said set of closely spaced electrical terminals at a substantially equal electrical potential during at least a portion of a time period corresponding to the external device being unconnected from the hearing aid.
12. A method of operating a hearing aid comprising a connector with a set of closely spaced electrical terminals operatively connected to at least one internal hearing aid component and electrically connectable to an external device, said method comprising the steps of:
detecting whether the external device is connected or unconnected to the hearing aid; and
keeping said set of closely spaced electrical terminals at a substantially equal electrical potential during at least a portion of a time period corresponding to the external device being unconnected from the hearing aid.