STANDARD DEFINITION (SD)
Standard definition (SD) in CRT (Cathode Ray Tube) technology refers to the conventional display resolution and video format that was prevalent before the introduction of high-definition displays. It represents the baseline level of image quality and resolution that CRT televisions and monitors were designed to handle.
In the context of CRT technology, standard definition typically refers to resolutions such as 480i/p (NTSC) or 576i/p (PAL/SECAM), which were widely used for analog television broadcasts and video playback. These resolutions are characterized by lower pixel density and less detail compared to high-definition resolutions.
Standard definition CRT displays were designed to accommodate the specific scan rates and aspect ratios associated with standard definition video signals. They featured a lower number of horizontal lines and pixels, resulting in a less detailed image compared to high-definition displays.
One of the advantages of CRT technology in standard definition was its ability to handle analog signals with relatively good color reproduction and sharpness. CRTs were known for their ability to display vibrant and saturated colors, making them popular for watching traditional broadcast content, VHS tapes, and playing retro video games.
While standard definition CRT displays have become less common in contemporary settings, they still hold nostalgic value for some enthusiasts and collectors of vintage electronics. They serve as a reminder of the era when CRT technology dominated the display market and were the primary means of consuming visual content.