Patent ID: 7893715

Claim:
A signal transmission method, comprising: providing a first signal processing unit receiving a first supply voltage; providing a second signal processing unit receiving a second supply voltage, the first supply voltage and the second supply voltage overlapping each other in a first overlap'range; providing a third signal processing unit receiving a third supply voltage, the second supply voltage and the third supply voltage overlapping each other in a second voltage overlap range; transmitting a first information signal from the first signal processing unit to the second signal processing unit; transmitting a second information signal dependent on the first information signal from the second signal processing to the third signal processing unit; providing the first, second and third supply voltages by at least three capacitive storage elements connected in series to each other, the first supply voltage being a voltage across a series circuit of the first and second capacitive storage elements, the second supply voltage being a voltage across a series circuit of the second and third capacitive storage elements, and the third supply voltage being dependent on a voltage across the third capacitive storage element; and configuring the first signal processing unit configured to measure a temperature of at least one of the first and second capacitive storage elements and configured to generate the first information signal such that it represents the temperature.