MST705小型LCD电视处理器技术规格

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"MST705是一款小型LCD电视处理器,具备视频解码功能。这款芯片由MStar Semiconductor公司生产,支持多种视频输入格式,包括NTSC、PAL和SECAM。它还提供了丰富的输入接口,如CVBS、S-video以及RGB等。此外,MST705还具有图像调整功能和自动定位、相位、增益调整,适用于各种分辨率的视频输入。" MST705是一款专为小型LCD电视设计的高性能处理器,其主要特点包括: 1. 视频解码功能:MST705能够处理多种模拟视频输入格式,如NTSC(北美)、PAL(欧洲)和SECAM(法国等地)标准,适应全球不同地区的电视信号。 2. 多种输入接口:除了常见的CVBS(复合视频基带信号)输入,它还支持S-video接口,用于分离Y/C信号,提高图像质量。此外,MST705可以接收来自PC、摄像机和GPS设备的RGB输入格式,以及传统视频源和高清电视(HDTV)的YCbCr输入。 3. 广泛的分辨率支持:该芯片可处理480i、480p、576i、576p、720p、1080i及1080p等不同分辨率的视频输入,同时,对RGB输入分辨率的支持包括640x480、800x480、800x600、1024x768和1280x1024。 4. 高精度模拟输入:MST705集成了3通道低功耗10位ADC(模数转换器),专门用于处理YCbCr和RGB信号,确保高清晰度的视频输出。 5. 同步信号支持:芯片内置了对RGB复合同步输入(CSYNC)、SOY、SOG、HSYNC和VSYNC的支持,确保视频信号的正确同步。 6. 内置时钟合成器和锁相环(PLL):这些功能可以实现内部时钟的精确控制,保证视频处理的稳定性。 7. 自动调整功能:MST705具备自动位置调整、自动相位调整、自动增益调整和自动模式检测功能,能够自动优化显示效果。 8. 颜色引擎:提供亮度、对比度、饱和度和色调的调整功能,确保用户可以根据个人喜好或环境光线调整画面效果。 9. 高级滤波技术:9 tap可编程多功能FIR滤波器和差分3带峰值引擎,用于增强图像质量,减少噪声。 10. 色调过渡处理:Luminance Transie功能可能涉及到亮度过渡的平滑处理,改善画面的连续性和视觉体验。 MST705通过其强大的视频处理能力,确保了在各种输入条件下都能提供优质的视频显示效果,适用于各种小型LCD电视和其他需要视频处理的设备。
2012-10-12 上传
n Video Decoder Ÿ Supports NTSC, PAL and SECAM video input formats Ÿ 2D NTSC and PAL comb-filter for Y/C separation of CVBS input Ÿ Single S-video and/or multiple CVBS inputs Ÿ ACC, AGC, and DCGC (Digital Chroma Gain Control) n Color Engine Ÿ Brightness, contrast, saturation, and hue adjustment Ÿ 9-tap programmable multi-purpose FIR (Finite Impulse Response) filter Ÿ Differential 3-band peaking engine Ÿ Luminance Transient Improvement (LTI) Ÿ Chrominance Transient Improvement (CTI) Ÿ Black Level Extension (BLE) Ÿ White Level Extension (WLE) Ÿ Favor Color Compensation (FCC) Ÿ 3-channel gamma curve adjustment n Scaling Engine/TCON Ÿ Supports analog panels with the resolution of 960x234, 1200x234, 1440x234, and more Ÿ Supports various displaying modes Ÿ Supports horizontal panorama scaling n Digital PWM Controller Ÿ Integrated general purpose digital PWM control loop Ÿ Programmable startup operating frequency and period with output voltage regulation Ÿ Programmable output current regulation; 40KHz~70KHz switching frequency, sync. to HSYNC possible Ÿ Burst-mode or continuous-mode for output current regulation; 150Hz~300Hz burst-mode frequency, sync. to VSYNC possible n Miscellaneous Ÿ Built-in MCU Ÿ Built-in internal OSD with 256 programmable fonts, 16-color palettes, and 12-bit color resolution Ÿ 3-channel low-power 8-bit DAC integration for RGB output, dynamic range 0.1-3.2V Ÿ Built-in VCOM AC level adjustment circuit Ÿ Spread spectrum clocks Ÿ 3.3V output pads with programmable driving current Ÿ 48-pin LQFP package

修改一下该代码中的错误function [s1, s2] = repair_roads(data_file, pos_sheet, road_sheet, centers) % 检查输入参数是否合法 if nargin < 4 error('输入参数不足!'); end % 读取数据 position = xlsread(data_file, pos_sheet); roads = xlsread(data_file, road_sheet); % 计算各村庄之间的距离 n = size(position, 1); dist = pdist2(position, position); % 构建边集合 edges = []; for i = 1:n for j = i+1:n if roads[i,j] == 1 edges = [edges; i j dist(i,j)]; end end end % Kruskal算法求解最小生成树 edges = sortrows(edges, 3); parent = (1:n)'; rank = ones(n, 1); mst = []; for i = 1:size(edges,1) u = edges(i,1); v = edges(i,2); w = edges(i,3); pu = find(parent==u); pv = find(parent==v); if pu ~= pv mst = [mst; u v w]; if rank(pu) < rank(pv) parent(pu) = pv; elseif rank(pu) > rank(pv) parent(pv) = pu; else parent(pu) = pv; rank(pv) = rank(pv) + 1; end end end % 计算总距离S1 s1 = sum(min(dist(:,centers), [], 2)); % 计算维修道路总里程S2 is_center = ismember(1:n, centers); s2 = sum(mst(is_center(mst(:,1)) | is_center(mst(:,2)), 3)); % 绘制图形 colors = ['r', 'g', 'b']; figure; hold on; for i = 1:size(mst,1) u = mst(i,1); v = mst(i,2); w = mst(i,3); plot([position(u,1) position(v,1)], [position(u,2) position(v,2)], 'k'); end for i = 1:length(centers) plot(position(centers(i),1), position(centers(i),2), 'o', 'MarkerFaceColor', colors(i)); end for i = 1:n d = dist(i,centers); [~,c] = min(d); plot([position(i,1) position(centers(c),1)], [position(i,2) position(centers(c),2)], colors(c)); end hold off; % 输出结果 disp(['总距离S1:' num2str(s1)]); disp(['维修道路总里程S2:' num2str(s2)]); end

2023-05-15 上传

解决该代码存在的问题function [s1, s2] = repair_roads(data_file, pos_sheet, road_sheet, centers) % 读取数据 position = xlsread(data_file, pos_sheet); roads = xlsread(data_file, road_sheet); % 计算各村庄之间的距离 n = size(position, 1); dist = zeros(n, n); for i = 1:n for j = i+1:n dist(i,j) = sqrt((position(i,1)-position(j,1))^2 + (position(i,2)-position(j,2))^2); dist(j,i) = dist(i,j); end end % 构建边集合 edges = []; for i = 1:n for j = i+1:n if roads(i,j) == 1 edges = [edges; i j dist(i,j)]; end end end % Kruskal算法求解最小生成树 edges = sortrows(edges, 3); parent = (1:n)'; rank = ones(n, 1); mst = []; for i = 1:size(edges,1) u = edges(i,1); v = edges(i,2); w = edges(i,3); pu = find(parent, u); pv = find(parent, v); if pu ~= pv mst = [mst; u v w]; if rank(pu) < rank(pv) parent(pu) = pv; elseif rank(pu) > rank(pv) parent(pv) = pu; else parent(pu) = pv; rank(pv) = rank(pv) + 1; end end end % 计算总距离S1 s1 = 0; for i = 1:n d = inf; for j = 1:length(centers) d = min(d, dist(i,centers(j))); end s1 = s1 + d; end % 计算维修道路总里程S2 s2 = 0; for i = 1:size(mst,1) u = mst(i,1); v = mst(i,2); w = mst(i,3); if ismember(u, centers) || ismember(v, centers) s2 = s2 + w; end end % 绘制图形 colors = ['r', 'g', 'b']; figure; hold on; for i = 1:size(mst,1) u = mst(i,1); v = mst(i,2); w = mst(i,3); plot([position(u,1) position(v,1)], [position(u,2) position(v,2)], 'k'); end for i = 1:length(centers) plot(position(centers(i),1), position(centers(i),2), 'o', 'MarkerFaceColor', colors(i)); end for i = 1:n d = inf; c = 0; for j = 1:length(centers) if dist(i,centers(j)) < d d = dist(i,centers(j)); c = j; end end plot([position(i,1) position(centers(c),1)], [position(i,2) position(centers(c),2)], colors(c)); end hold off; % 输出结果 disp(['总距离S1:' num2str(s1)]); disp(['维修道路总里程S2:' num2str(s2)]); end

2023-05-15 上传

解决该代码位置2处的索引超出数组边界function [s1, s2] = repair_roads(data_file, pos_sheet, road_sheet, centers) % 检查输入参数是否合法 if nargin < 4 error('输入参数不足!'); end % 读取数据 position = xlsread(data_file, pos_sheet); roads = xlsread(data_file, road_sheet); % 计算各村庄之间的距离 n = size(position, 1); dist = pdist2(position, position); % 构建边集合 edges = []; for i = 1:n for j = i+1:n if roads(i,j) == 1 edges = [edges; i j dist(i,j)]; end end end % Kruskal算法求解最小生成树 edges = sortrows(edges, 3); parent = (1:n)'; rank = ones(n, 1); mst = []; for i = 1:size(edges,1) u = edges(i,1); v = edges(i,2); w = edges(i,3); pu = find(parent==u); pv = find(parent==v); if pu ~= pv mst = [mst; u v w]; if rank(pu) < rank(pv) parent(pu) = pv; elseif rank(pu) > rank(pv) parent(pv) = pu; else parent(pu) = pv; rank(pv) = rank(pv) + 1; end end end % 计算总距离S1 s1 = sum(min(dist(:,centers), [], 2)); % 计算维修道路总里程S2 is_center = ismember(1:n, centers); s2 = sum(mst(is_center(mst(:,1)) | is_center(mst(:,2)), 3)); % 绘制图形 colors = ['r', 'g', 'b']; figure; hold on; for i = 1:size(mst,1) u = mst(i,1); v = mst(i,2); w = mst(i,3); plot([position(u,1) position(v,1)], [position(u,2) position(v,2)], 'k'); end for i = 1:length(centers) plot(position(centers(i),1), position(centers(i),2), 'o', 'MarkerFaceColor', colors(i)); end for i = 1:n d = dist(i,centers); [~,c] = min(d); plot([position(i,1) position(centers(c),1)], [position(i,2) position(centers(c),2)], colors(c)); end hold off; % 输出结果 disp(['总距离S1:' num2str(s1)]); disp(['维修道路总里程S2:' num2str(s2)]); end

2023-05-15 上传