Patent ID: 6351472
Filing Date: 2002-02-26
Classification: H04L,H04R

Abstract:
In a serial, bidirectional data transmission method for communicating between a programming device and a hearing aid device, wherein digital data and clock pulses of respectively variable pulse widths are transmitted, via a single signaling line, from the programming device to the hearing aid device for adjusting operating parameters of the hearing device, and wherein said digital data are recovered at the hearing aid device by analyzing the variations of said pulsewidths of said clock pulses, and wherein said hearing aid device, upon recovery of said digital data, transmits a responsive transmission of digital data from said hearing aid device to said programming device, the improvement comprising:transmitting said digital data between said programming device and said hearing aid device in a transmission frame with a defined pulsewidth and having a start bit which is set to 0 and a stop bit which is set to 1; for transmission of said digital data in said transmission frame from said programming device to said hearing aid device, setting at least one bit position besides said start bit to 0; and in said responsive transmission of said digital data from said hearing aid device to said programming device, setting said at least one bit position to 1.