Patent ID: 7392128

Claim:
A method for bidirectional single-wire data transmission of data information between a control unit and at least one peripheral unit, comprising: performing at least one of: generating a first current flow from the control unit to the peripheral unit during first time slots via a single-wire line to transmit one of voltage-coded information and current-coded information from the control unit to the peripheral unit, and generating a second current flow from the peripheral unit to the control unit during second time slots via the single-wire line to transmit at least one of the voltage-coded information and the current-coded information from the peripheral unit to the control unit; implementing the first time slots and the second time slots so they do not mutually overlap; generating additional information in at least one of the first time slots and the second time slots; transmitting the additional information as one of digital signals and analog signals by modulating one of a current and a voltage of the single-wire line; analyzing the additional information in one of the control unit and the peripheral unit.