Patent ID: 8588681

Claim:
A semiconductor device for transmitting a signal through an inductive coupling, comprising: one or more transmission and reception coil pair, each pair comprising a transmission coil and a plurality of reception coils, and a diameter of each reception coil being smaller than a diameter of said transmission coil; a plurality of signal receivers for receiving signals generated by said plurality of reception coils, respectively; and an arithmetic device for performing an arithmetical operation on output signals from said plurality of signal receivers and outputting a signal transmission result, wherein said plurality of reception coils are arranged in an array of rows and columns, and said plurality of reception coils consist of a plurality of first reception coils which are located inside of said transmission coil and a plurality of second reception coils which are located outside of said transmission coil, when a current flows in said transmission coil, a current flows through said plurality of first reception coils in a direction which is the same as the current flowing through said transmission coil and a current flows through said plurality of second reception coils in a direction which is opposite to the current flowing through said transmission coil, and said arithmetic device generates said signal transmission result based on output results of said plurality of signal receivers.