Patent ID: 7730251

Claim:
A support identification device comprising a support and an identity receiver adapted to be coupled to an identity transmitter of said support, said identity transmitter having a plurality of identity transmitter terminals each at a predetermined logical level and adapted to be coupled to respective identity receiver terminals of said identity receiver, wherein said identity receiver is provided with at least one write terminal adapted to be coupled to a corresponding dynamic terminal of said support, wherein said dynamic terminal is adapted to be coupled to at least one transmitter terminal of said identity transmitter, and wherein said identity receiver is further provided with program means adapted to set said write terminal at a first logical level, to read a first logical level at each identity receiver terminal of said plurality, to set said write terminal at a second logical level, to read a second logical level at each identity receiver terminal, and to determine from the difference between the first read logical level and the second read logical level at each identity receiver terminal whether said identity receiver terminal is coupled to said write terminal.