Patent ID: 8982959
Filing Date: 2015-03-17
Classification: H04N

Abstract:
1. A signal transmission apparatus comprising: a two-pixel sampling-out control section that maps pixel samples of a 0th line of a first class image to video data regions of first and second sub-images, maps pixel samples of a first line of the first class image to video data region of third and fourth sub-images, maps pixel samples of a second line of the first class image to video data region of fifth and sixth sub-images, maps pixel samples of a third line of the first class image to video data regions of seventh and eighth sub-images, maps pixel samples of a 0th line of a second class image to the video data regions of the first and second sub-images, maps pixel samples of a first line of the second class image to the video data region of the third and fourth sub-images, maps pixel samples of a second line of the second class image to the video data region of fifth and sixth sub-images, and maps pixel samples of a third line of the second class image to the video data regions of the seventh and eighth sub-images, in a case of sampling out and mapping two pixel samples adjacent to each other on the same line for each line of four consecutive lines in the consecutive first and second class images prescribed by an m×n (where m 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 the HD-SDI format, to first to eighth 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 eighth 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 an HD-SDI prescribed by the SMPTE 435-1; and a readout control section that outputs the HD-SDI.