Transmission using pulse position coding

摘要

The signal transmission device for transmitting a transmission signal between at least two circuits having different power sources, includes: a signal leading edge detection section for outputting a first short pulse-width signal upon detection of a leading edge of the transmission signal; a signal trailing edge detection section for outputting a second short pulse-width signal upon detection of a trailing edge of the transmission signal; a transformer section having a primary coil and a secondary coil, the first and second short pulse-width signals output from the signal leading edge detection section and the signal trailing edge detection section being transmitted from the primary coil to the secondary coil; and a signal recovery section for recovering the transmission signal from the first and second short pulse-width signals transmitted to the secondary coil of the transformer section.