RECOMMENDATION ITU-R BT.1358 - STUDIO PARAMETERS OF 625 AND 525 LINE PROGRESSIVE SCAN TELEVISION SYSTEMS ANNEX 1 - Signal parameter values for 625/50/1:1 and 525/59.94/1:1 progressive scanning systems derived from ... 1 Opto-electronic conversion 2 Picture and scanning characteristics 3 Analogue representation 4 Digital representation