US Patent 10051392 Hearing aid configuration detection

A hearing aid includes: a first housing accommodating first circuitry; a second housing accommodating second circuitry; and a connector configured for interconnection of the first circuitry with the second circuitry; wherein the connector comprises a line for transmission of a first signal between the first circuitry and the second circuitry; wherein the second circuitry includes a transmitter configured for transmission of a second signal with configuration information to the first circuitry utilizing the line; and wherein the first signal does not contain the configuration information.