1. 
   HD MAC
   High Definition Multiplexed Analogue Component. European standard for television HDTV, a 1250-line, 16:9 aspect ratio, 50 frames/second, analogue transmission system.
   Found op http://www.transedit.se/glossary.htm
   
   
2. 
   HD-MAC
   HD-MAC was a proposed broadcast television systems standard by the European Commission in 1986 (MAC standard), a part of Eureka 95 project . It was an early attempt by the EEC to provide High-definition television (HDTV) in Europe. It was a complex mix of analogue signal (Multiplexed Analogue Compo...
   Found op http://en.wikipedia.org/wiki/HD-MAC
   
   

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