But I'll never understand why they add small Tata Sky logo (similar to HD channels) on some SD channels only. Why dont they use small TS logo on all SD channels? If we assume that they add small logo on downscaled SD channels only then why dont they add small logo on History TV18 SD, MTunes SD, Nat Geo Music SD, etc channels? Many downscaled SD channels contain big TS logo similar to normal SD channels.