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一份不错的模拟电视教程
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类别: 消费电子
时间:2020-02-10
大小:2.1MB
阅读数:9
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Analog_TVl Introduction l Analog TV systems l Progressive and interlaced systems l Synchronism signals l Composite signal l Components signal l NTSC and PAL systems l Sampling of the TV signal 1 Camera Amplitude Transmitter 0 Real world Electrical signal Visual system TV screen Receiver 2 Sclera Vitreous humor Iris Cornea Lens Fovea Aqueous humor Retina Optic nerve Blind spot Glare limit 0.01 Sensibility to contrast 0.02 0.05 0.1 0.2 0.5 1 1.5 2 3 4 6 8 12 16 24 Temporal frequency (Hz) 1 2 4 8 Subjective brightness Adaptation range (cy cle s/d egr ee) Ba Bb 0.5 Spa tial fre que ncy Scotopic Scotopic threshold Photopic Log of intensity 3 Number of lines per image: Depends on desired vertical definition Number of images per second: No flicker > 50 Motion sensation > 15 ……
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