▲ 537 ▼ When I was a kid I identified old TV shows because they were black and white... (lemmy.world) submitted 3 years ago* by Hypersapien@lemmy.world to c/showerthoughts@lemmy.world 77 comments fedilink hide all child comments These days, kids identify them by the aspect ratio.
[–] toofpic@lemmy.world 0 points 3 years ago (1 child) Ummm..what? How do you think did CRTs show the picture? permalink fedilink source parent hideshow 2 child comments replies: [–] zero_gravitas@aussie.zone 5 points 3 years ago* (last edited 3 years ago) What they're referring to is that analogue CRTs don't really have a fixed horizontal resolution. The screen has a finite number of horizontal lines (i.e. rows) which it moves down through on a regular-timed basis, but as the beam scans across horizontally it can basically be continuous (limited by the signal and the radius of the beam). This is why screen resolutions are referred to by their vertical resolutions alone (e.g. 360p = 360 lines, progressive scan [as opposed to interlaced]). I'm probably wrong on the specifics, but that gives the gist and enough keywords to find a better explanation. [EDIT: A word.] permalink fedilink source parent
[–] zero_gravitas@aussie.zone 5 points 3 years ago* (last edited 3 years ago) What they're referring to is that analogue CRTs don't really have a fixed horizontal resolution. The screen has a finite number of horizontal lines (i.e. rows) which it moves down through on a regular-timed basis, but as the beam scans across horizontally it can basically be continuous (limited by the signal and the radius of the beam). This is why screen resolutions are referred to by their vertical resolutions alone (e.g. 360p = 360 lines, progressive scan [as opposed to interlaced]). I'm probably wrong on the specifics, but that gives the gist and enough keywords to find a better explanation. [EDIT: A word.] permalink fedilink source parent