发明名称 |
VIDEO SIGNAL TRANSMITTING DEVICE AND TRANSMISSION VIDEO SIGNAL GENERATING PROGRAM, VIDEO SIGNAL RECEIVING DEVICE AND TRANSMISSION VIDEO SIGNAL CONVERTING PROGRAM AND VIDEO SIGNAL TRANSMITTING SYSTEM |
摘要 |
PROBLEM 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 achieving constant luminance transmission satisfying constant luminance principle. SOLUTION: The video signal transmitting device 1B includes: a luminance signal generating means 10 for generating a luminance signal by mixing color signals of linear signals; a band limiting means 11B for extracting a signal of a low frequency component from a red signal, a blue signal and a green signal; a downsampling means 12B for downsampling each of the extracted signals; a nonlinear conversion means 13A for converting the luminance signal into a nonlinear signal; a nonlinear conversion means 13C for converting each of the downsampled signals into a nonlinear signal; and a color difference signal generating means 14B for generating a color difference signal from a low band nonlinear red signal, a low band nonlinear blue signal and a low band nonlinear green signal. COPYRIGHT: (C)2011,JPO&INPIT
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申请公布号 |
JP2011166545(A) |
申请公布日期 |
2011.08.25 |
申请号 |
JP20100028258 |
申请日期 |
2010.02.10 |
申请人 |
NIPPON HOSO KYOKAI |
发明人 |
NISHIDA YUKIHIRO;SUGAWARA MASAYUKI;MASAOKA KENICHIRO |
分类号 |
H04N9/77;H04N9/67;H04N9/69 |
主分类号 |
H04N9/77 |
代理机构 |
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地址 |
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