 Complete the following phrase:  For the Albertville 1992 Winter Olympics and Barcelona 1992 Summer Olympics, a public demonstration of HD-MAC broadcasting took place. 60 HD-MAC receivers for the Albertville games and 700 for the Barcelona games were set up in Eurosites to show the capabilities of the standard. 1250 lines 1152 visible CRT projectors were used to create an image a few meters wide in public spaces in Barcelona for the Olympics. There were some Thomson Space system 16:9 CRT TV sets as well. The project sometimes used rear-projection televisions. In addition, some 80,000 viewers of D2-MAC receivers were also able to watch the channel though not in HD. It is estimated that 350,000 people across Europe were able to see this demonstration of European HDTV. This project was ficed by the EEC. The PAL-converted signal was used by mainstream broadcasters such as SWR, BR and 3sat. The HD-MAC standard was also demonstrated at 