COMM 122 Lecture Notes - Lecture 19: Advanced Wireless Services, Charge-Coupled Device, Plasma Display
16 Mar 2016
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Technicalities (cont"d): how tv works; storage & delivery. 65 mhz (in chunks) between 1695 - 2180 mhz. Minority groups were to get preference for licenses. Dish made fake companies that were really dish. Made them look like they were small companies as if they were run by minorities or women. Got a discount for licenses over large companies. 6mhz channel moves: 38 + mbps of data (cable) Odd scan lines and even lines -- interlaced scaning 30 frames/second. Progressive scanning -- line by line all the way through. 4k tv = ultra hdtv = 3840 pixels x 2160 lines. Retrace interval = end of line, go back to the next line. Vertical blanking interval (vbi) = end of the line, jumps back to the top. Dvc - pro, d7, dig - 8, d- 11 - 16 ghz: ku band -- smaller more powerful.
