The company built the first rail lines up connecting historic Colorado mining communities such as narrow gauge mountain lines were dismantled by the mid 20th century, a portion of its connecting lines paralleling the Front Range survive as active lines of BNSF Railway.
32.
The 352x240 and 352x288 ( or SIF ) resolutions were chosen because it is half the horizontal and vertical resolution of NTSC video, and half the horizontal resolution of PAL ( the vertical resolution of PAL already being half of the 576 active lines ).
33.
The exact width is determined by taking the definition of the time required for an active line in PAL or NTSC, and multiplying it by the pixel clock of 13.5 MHz of Digital SDTV . PAL is exactly 52?s, so it will equate to exactly 702 pixels.
34.
Thus the number of " active " video pixels per line is equal to the sample rate multiplied by the active line duration ( the part of each analogue video line which contains active video, i . e . does not contain sync pulses, blanking etc . ).
35.
In December 2007-despite Marc Storace still touring with the then active line-up of Krokus-an increased movement to revive the original line-up of Krokus started when the original line-up of Storace, von Arb, von Rohr and Steady performed in the Swiss TV show " Die gr�ssten Schweizer Hits " ( The greatest Swiss hits of all times ).
36.
No rationale is exposed in the papers for choosing this specific resolution over the Japanese 1035 active lines system, or alternatively doubling the 480 lines of the standard US TV to 960, but that way it could cover all resolutions expected to be present on the market, and that included the European one, which happened to be the highest.
37.
Japan had the earliest working HDTV system, which was named "'Hi-Vision "'( a contraction of "'HI "'gh-definition tele "'VISION "') with design efforts going back to 1979 . The country began broadcasting wideband analog HDTV signals in the late 1980s using 1035 active lines interlaced in the standard 2 : 1 ratio ( " 1035i " ) with 1125-lines total.
38.
It converts for PAL ( referring here to 625 line 575 active line used with PAL as well as the chrominance aspects ), by repeating each frame twice with a corresponding interlace, or for NTSC, by repeating some 480p frames 2 times and others 3 times ( 3 : 2 pulldown ), to make 24 fps material play at 30fps, or 60 " fields " per second.
