Fixed vs. CRT pixels
Closeup of a fixed pixel display: pixels consist of 3 colored subpixels, and are arranged in a matrix, aligned both horizontally and vertically.
A CRT monitor that has no clear distinction of individual pixels; the image is formed based on the resolution set by the electron gun.

Fixed pixel displays are display technologies such as LCD and plasma that use an unfluctuating matrix of pixels with a set number of pixels in each row and column.[1][2] With such displays, adjusting (scaling) to different aspect ratios because of different input signals requires complex processing.[2]

In contrast, the CRTs electronics architecture "paints" the screen with the required number of pixels horizontally and vertically. CRTs can be designed to more easily accommodate a wide range of inputs (VGA, XVGA, NTSC, HDTV, etc.).

References

  1. ↑ Tsujihara, Susumu; Otake, Keiich (5 July 2012). "Invited Paper: 65.3: Development of Image Quality Technology for Digital High Definition Plasma TV". SID Symposium Digest of Technical Papers. Vol. 36. Society for Information Display. pp. 1832–1835. doi:10.1889/1.2036376. Retrieved 30 October 2021. The screen resolution of fixed pixel display devices such as plasma TVs and LCD TVs is regulated by the number of pixels in the panel. Closed access icon
  2. 1 2 Bowron, John W.; Tsintzouras, George (25 April 2000). "Artifact-free resizing using an optical method". Projection Displays 2000: Sixth in a Series. Electronic Imaging 2000. Vol. 3954. San Jose, CA, United States. doi:10.1117/12.383382. Retrieved 30 October 2021. A fixed pixel display is characterised by the number of rows and columns that can be addressed. This can be referred to as the 'native resolution' of the panel. When the native resolution of the panel matches the resolution of the signal it can be used directly. When the signal does not match this resolution some other measures must be taken to display the information. The most popular technique is resizing the signal electronically to match the resolution of the panel. Closed access icon
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