Video signal transmission apparatus and transmission for video signal generation program, the video signal receiving apparatus and a transmission for video signal conversion program, as well as, the video signal transmission system

摘要

PPROBLEM TO BE SOLVED: To provide a video signal transmitting device that prevents a reduction in SN ratio due to compression and expansion of nonlinear conversion while executing constant luminance transmission satisfying constant luminance principle. PSOLUTION: The video signal transmitting device 1 includes: a luminance signal generating means 10 for generating a luminance signal by mixing color signals of linear signals; a band limiting means 11 for extracting a signal of a low frequency component from a red signal and a blue signal; a downsampling means 12 for downsampling each of the extracted signals; a nonlinear conversion means 13 for converting each of the downsampled signals and the luminance signal generated by the luminance signal generating means 10 into a nonlinear signal. The nonlinear luminance signal, the low band nonlinear red signal and the low band nonlinear blue signal are used as video signals for transmission. PCOPYRIGHT: (C)2011,JPO&INPIT