Multi-standard television
Multi-standard television sets were made for use in the television industry, so that one TV set or monitor could show video content from other television systems. Multistandard is only used with analogue television. In digital television, there are different standards, like DVB, ISDB, and ATSC. However digital multistandard tv set are not existing. Multistandard devices in digital TV may be PC extension card.
Phillips produced a
The USSR and PAL in SECAM countries
In the mid-1980s
NTSC playback in PAL countries
In order to be able to watch American video tapes, the people of Europe started to buy video recorders that would play back an NTSC video tape and convert the colour component of the video content to PAL, whilst leaving the number of lines the same, and the field rate, slightly slowed down in order to accommodate the exact 64 microsecond line length required for PAL.
Newer TV sets would automatically accommodate the 60 Hertz vertical scan rate, and older TV sets needed a manual adjustment of the vertical hold. DVD players give the option of converting the whole signal to PAL standards complete with 50 Hertz scan rate. The results given by a modern DVD player can be quite pleasing when playing back an NTSC DVD.
PAL playback in NTSC countries
In the USA proper, the ability for an American TV set, or DVD player to play back a PAL DVD became widespread in the post Y2K period. By 2009 about 80% of DVD and TV setups in the United States could play a PAL DVD. So now a PAL DVD can be sold in the United States, without the need to issue the DVD, converted into NTSC.