How can it be resolved by horizontal and vertical scanning?
2007-03-15 17:31:28 · 3 answers · asked by rahul.malpani 2 in Science & Mathematics ➔ Engineering
What you describe is interlace scanning. Television scanning is done in 2 fields. Field one makes a complete image starting at the top then going down a line at a time. then the trace returns to the top for Field two. If field two were to start at the same position on the screen then the two fields would exactly overlap. However TV scanning structure is such that it will start halfway across instead. This way Field two lines will scan down midway between those from Field one. When it is finished, one frame is complete, 1/30 sec in US or 1/25 sec in Europe. The total number of scan lines for an entire frame is an odd number, 525 in the US, which forces field 2 to start at the "half way" position. This is true for color or monochrome television.
2007-03-15 18:25:38 · answer #1 · answered by lare 7 · 1⤊ 0⤋
Monochrome Television Receiver
2016-12-14 18:22:21 · answer #2 · answered by ? 4 · 0⤊ 0⤋
better check this site..... Color slow-scan TV system and method - Patent 4400717
Alternate frame shift color video display technique - Patent 4247865
gud luck
2007-03-15 17:38:48 · answer #3 · answered by marylyn g 2 · 0⤊ 0⤋