Patent ID: 8270836

Claim:
A signal transmitting device comprising: a transmitter that includes: a first electro-optical converter electro-optically converting original electrical red video signal in original video signal according to DVI standard into optical red video signal; a second electro-optical converter electro-optically converting original electrical green video signal in the original video signal into optical green video signal; a third electro-optical converter electro-optically converting original electrical blue video signal in the original video signal into optical blue video signal; a parallel/serial converter converting original electrical parallel signal having a lower transfer rate than a transfer rate of the original video signal into original electrical serial signal based on an original clock signal of the original video signal; and a fourth electro-optical converter electro-optically converting the original electrical serial signal transmitted from the parallel/serial converter into optical serial signal; a receiver that includes: a first optical-electro converter optical-electro converting the optical red video signal into electrical red video signal; a second optical-electro converter optical-electro converting the optical green video signal into electrical green video signal; a third optical-electro converter optical-electro converting the optical blue video signal into electrical blue video signal; a fourth optical-electro converter optical-electro converting the optical serial signal into electrical serial signal; a clock signal generator generating clock signal from the electrical serial signal; and a serial/parallel converter converting the electrical serial signal into electrical parallel signal based on the clock signal, four optical fibers that optically connect the first to fourth electro-optical converters to the first to fourth optical-electro converters respectively.