Patent ID: 8854540

Claim:
A signal transmission apparatus comprising: a vertical rectangular region sampling-out control section that obtains first to t-th vertical rectangular regions by dividing first and second class images into t by p (where p is an integer equal to or more than 1) pixel samples in the horizontal direction, repeatedly performs a process where pixel samples read out from each line of a 0th line to a (n−1)-th line of the first and second class images are mapped to each line of video data regions of first to t-th sub-images in a unit of p pixel samples in the horizontal direction for each of the first to t-th vertical rectangular regions, in an order of the first class image and the second class image, maps pixel samples to each line of the video data regions of the first to t-th sub-images in a unit of p pixel samples m′/p times, and repeatedly maps pixel samples to the next line which is vertically subsequent to the line to which the pixel samples have been mapped in a unit of p pixel samples, in a case of mapping pixel samples of the consecutive first and second class images prescribed by an m×n (where in and n indicating m samples and n lines are positive integers)/a−b (where a and b are frame rates of a progressive signal)/r:g:b (where r, g, and b are signal ratios in a case of a predetermined signal transmission method)/10-bit, 12-bit signal having the number of pixels of one frame exceeding the number of pixels prescribed by an HD-SDI format of SMPTE (Society of Motion Picture and Television Engineers) 435-2, to first to t-th (where t is an integer equal to or more than 8) sub-images prescribed by an m′×n′ (m′ and n′ indicating m′ samples and n′ lines are positive integers)/a′−b′ (a′ and b′ are frame rates of a progressive signal)/r′:g′:b′ (r′, g′, and b′ are signal ratios in a case of a predetermined signal transmission method)/10-bit, 12-bit signal; a line sampling-out control section that samples out the pixel samples every other line from each line of the first to t-th sub-images to which the pixel samples have been mapped, so as to generate an interlace signal; a word sampling-out control section that samples out for each word the pixel samples which have been sampled out for each line so as to be mapped to video data regions of the HD-SDI format prescribed by SMPTE 435-2; and a readout control section that outputs the HD-SDI format.