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Ntsc square pixel clock vs resolution: >> http://bit.ly/2eYKyTa << (download)
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Keywords: video resolution, video bandwidth, video, NTSC, PAL, TVL, TV lines, pixels, bandwidth, slew rate, frame rate, interlaced video, refresh rate
The pixel clock doesn't have to be the same as the color clock. As you notice, NTSC vertical resolution is 262.5 scanlines. will do a nice job of avoiding chroma artifacts while yielding roughly-square pixels. use a dot rate of about 10/3 or maybe 3.5x chroma, which would yield pixels with a roughly 1:1
For PAL, the square pixel clock rate is 14.75MHz for 576i, or GTIA produces high-resolution pixels at a rate of twice the system clock or four
BTW 768 is for square pixel (pixel aspect for 4:3 screen is 1:1), . Thus real resolution for PAL is (for 13.5MHz sampling) close to approx.
480i is a shorthand name for the video mode used for standard-definition analog or digital The 480 identifies a vertical resolution of 480 lines, and the i identifies it as an interlaced The field rate, which is 60 Hz (or 59.94 Hz when used with NTSC color), television (SDTV) with a 4:3 aspect ratio (with square pixels).
3 Sep 2015 VIC-II pixel clock, 7,882 MHz, 8,18184 MHz Y - Luminance ("Brightness"); U - Color Difference; V - Color Difference This has the consequence that in high resolution patterns with high contrast between the pixels (eg black NTSC square pixels 12,272727 MHz /2 = 6,1363636 Mhz; NTSC pixel clock 1
6 Apr 2017 NTSC Master clock is 21.47727273 MHz and each PPU pixel lasts four long (equivalent to 341.25 NES pixels), and each field is 262 or 263 lines tall $xE/$xF output the same voltage as $1D. $x1-$xC output a square . This appears visually as a sawtooth effect at the edges of colors at high resolution.
14 Aug 2017 The pixel aspect ratio that each rate produces, assuming the 480-line 601 defines the NTSC picture such that this is square on 4:3 monitors Atari 7800 (hi-res, 320px); Amiga, IBM CGA (40-column or 320px) and EGA in
6 Aug 2017 So the PPU's pixel rate is 1/4 of the master clock, or 6/4 of the color subcarrier, In NTSC video sampled at 13.5 MHz, there are 481.5 non-square pixels lines of the signal, hence the commonly reported 256x224 resolution.
Video Graphics Array (VGA) is the display hardware first introduced with the IBM PS/2 line of 200, or 350 to 410 lines (including 400-line) at 70 Hz refresh rate, or; 224 to 256, or 448 to 512 lines For example, high resolution modes with square pixels are available at 768?576 or 704?528 in 16 colors, or medium-low
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