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 Posted: Tue 8:07, 07 Dec 2010 Post subject: mbt sandalen On TV color signal of a new coding sc |
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On TV color signal of a new coding scheme
Spectral edge of the effective layer. To maintain a certain image clarity, it is necessary to take measures to reduce the interference color brightness of each string. And this interference will affect the level of today's TV standards of quality, especially for large screen TVs more significant interference. 2. New delivery methods in order to avoid above Slough encoding color TV system quality issues, the future of color television systems typically do not have to pass the two color difference signals,[link widoczny dla zalogowanych], replacing the Y, U, V will be another mass-made structure. Figure 2 shows the schematic diagram of new color TV transmission. Zhu Wei Sheng 1 Figure 2 The spread of new principles of color TV transmission system uses two cameras, from the studio cameras to the TV using YCC color TV transmission system between the camera output R, G, B signal is converted by the encoder Cheng Y and c, Cn three new transmission signal. Representative of the brightness component Y here. CaC on behalf of the new color components. Then, the signal passes through the mixing device, and time division multiple transformations to launch out. I. the system of color in the UV T = 0.493 (B-Y) V = O. 877 (R-Y) the following, we derive from this formula a new color formula: Principle structure shown in Figure 2, set the brightness nominal 0.7V, the change in the range 0 ~ O. 7 volts. When the brightness expressed as; Y = 0.2990R +0. 5864G-l-0.1146B when B = 0 for trapped children Y. = 0.2990 +0.5864 = 0.886 for R = 0 trapped sub Y. = 0.5864 +0.1146-0.701 seen as trapped in this relationship; TV 1990 8 c = (B-Y) +0.35 Vcn = (R-Y) where Y ten 0.35V = Y. YY = 0.7V for the B0 is Y. = 0.886 color bar signal waveform in Figure 3 (a) luminance signal (b), (C) c for the two color difference signals at cR (d) time division multiplex signal -. . Cs = (B-Y) ten o. 35V: I::!! Plastic v0.886 +0.35 V = 0 the same for R = 0 时 c: 0, the color curve graph shown to the 3 (b), (c), level range of 0 ~ 0 .7 v between. For the color difference signal is divided by time multiplexing system modulation. First, Cn,[link widoczny dla zalogowanych], C phase of the new color Chun re-added to the luminance signal is compressed on the way of time division multiplexing communication technology Xidebolun Drake University College of the lead. TV signal from the map we can see that in the low-end color-carrier frequency band, the crosstalk between the luminance and chrominance can be greatly improved. From the time division multiple characteristics of the system can be seen on the compressed luminance signal is not the slightest change, but only got as far as possible chroma signal compression, the entire TV series in the M system, the color brightness of the signal wavelength range accounts for only about Temple This does not affect the TV signal to work through this delivery system for a high-end processing of body image clarity. The new TV delivery technology has successfully grafted on the International Radio Television News Association of trail, I wish TV business continues to leap forward made Jue [1] Germany, [2], West Germany, 8 [the book] West Germany,[link widoczny dla zalogowanych], 8 reference literature ZeltschriftfiirTelekommunikation, B7, KomponententcchnikimFetnsehen, 86,[link widoczny dla zalogowanych], [4] in Japan, the second work port portrait work pb 85 (3c pick 42) 2.8V). , Bank of China when the input composite sync pulse rising edge sync pulse or the arrival of a balanced (such as waveform in time t), triggers a D-side to \level, D = diode anode and cathode potentials below cutoff, c discharge through R, V} to t time index decreased V (the CLR trigger end of level 4) down to \,[link widoczny dla zalogowanych], that is, the CLR side clearance 74LS74A level ≤ 1.4v) when, Q of \re fast charge to \t: time, Q Duanyou \O. end of the \rising edge. (The ant turn page> TV ● 8 1990
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