Patent ID: 8289445

Claim:
A signal transmitting device that transmits an input video signal in which the number of pixels of one frame is equal to or larger than the number of pixels specified in the HD-SDI format, and an audio signal inputted synchronously with the input video signal, comprising: a mapping unit that thins out pixel samples, which are extracted from each frame of the input video signal, in units of predetermined samples, fetches the thinned out pixel samples in equal order frame by frame, maps the samples into active periods of first, second, third, and fourth sub-images conformable to the HD-SDI format, maps the audio signal into a blanking period of the first sub-image, separates each of the mapped first, second, third, and fourth sub-images into a first-link transmission channel and a second-link transmission channel, and thus maps the sub-images into eight channels; a parallel-to-serial conversion unit that serially converts the mapped first, second, third, and fourth sub-images; and an output unit that outputs serial digital data into which the sub-images are serially converted by the parallel-to-serial conversion unit.