🚀 go-pugleaf

The Motorola MC1377 RGB to PAL/NTSC converter chip is the basis for alot of the converters out there.  The only problem is creating composite sync (needed by this chip) from the ST's seperate sync.  The national semiconductor MM5321N (rather expensive at $11.95, versus under $3. for the motorola) is a TV camera sync generator that outputs equalized pulse composite sync that can drive the motorola.  The sync can be pulled off seperately from the ST and input to the national chip's reset pins.  The national 







chip also has index pulses for field storage applications.  I have built alot of video equipment (genlock, composite converters, field storage etc.) that interfaces with the ST.
 
Practical Solutions is now (?) selling their Video Key, which is a composite converter for the ST.  It goes for about $120.
 
Motorola app note # AN932 describes the use of the MC1377 chip in a circuit.  The chip is in the linear databook.
 
            Rob      rutgers!rubbs1!robert_lisowski