Data carrier device, data carrier driving device, data communication system using data carrier driving device and data communication method

摘要

The present invention has an object enabling stable data communication hard to perform a malfunction in a simple circuit configuration which can miniaturize a system and does not need any strict accuracy by executing data communication in a connection using two terminals or less. The present invention is featured by being related to a data carrier device including a signal terminal for performing signal input from a data carrier driving device. The data carrier device includes a data communication circuit receiving an input of a pulse having a part having a different duty ratio and a pulse frequency constant on the whole from the data carrier driving device through the signal terminal to generate a data signal.