Video Animation Hardware.
There are times when animating that one needs to view and move the work in progress to different platforms. This is especially important in modern puppetry where it is difficult to see what is happening. With a small LCD of the type used for VR Headgear. It might be possible to have a small screen in which the operator can see the object being manipulated.

It turned out that there was one solution to several imaging problems. The solution is to be able to convert YC video to RGB. This board presented here can be used to drive such a system as the MCL0712A03 LCD.

The curcuit can also interface a SonyPVM 2530 monitor. This was a popular monitor in the early 1990s. It is often used to represent a television in films as it can be driven a number of different ways. On the back is a DB25 computer port. This was designed for IBM CGA/EGA type inputs. A mode flag allows analogRGB to be input as well. As used by Apple // and Apple // class computers. The timing is NTSC. 15.7kHz Horizontal.
Most of the pins are used to support the IBM. If left unconnected the monitor is placed into analogue mode. Pins 3,4,5,6 correspond to the Sync,Blue,Green, and Red signals. The bottom row of pins provide ground. No other pins were used.
To drive these pins the MC44011 video processor from Motorola was selected.
The recommendation for this component and the pinouts of the PVM2530 came from the Sci.Electronics.Repair FAQ: Notes on Video Conversion under the heading Composite video (NTSC/PAL) to RGB.

Transcoder with parts in position.

PVM2530 NTSC (YC) to RGB distribution (Macintosh) 
Plans for the MC44011 NTSC to RGB converter to drive a Sony PVM2530
Software To Control NTSC to RGB converter
  Includes
    expressPCB board layout. (with postscript plots)
    Macintosh 68HC11E2 Development system
    MC44011 I2C driver
    Design notes.
Design notes only 
	Html version of the design.
Test Hardware for NTSC video 
includes
     Color Bar generator
     RGB to NTSC converter.
     See Nuts and Volts April 1995
     Use of SMT in implementing the Nuts and Volts circuit


home page

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Editorial Note: At the time this information was compiled Motorola informed that the MC44011 was being discontinued. I encourage anyone interested in this component to contact Motorola and let them know how you feel about the loss of this useful part. Especially one that is so well documented. This is the reason for the discontinuation; 

... I share your disappointment over the discontinuation of the device as we have
no equivalent replacement, but please understand the EOL decision is based on
sales, not age (we still sell millions of LM324s each year!!). As sales of a
product goes down with time, and as the wafer fab where it is made becomes
antiquated (by semiconductor standards) due to low sales of all the products
made in that wafer fab, a point is reached where it becomes economically
necessary to discontinue all the remaining items in that wafer fab, and the
shut down the wafer fab.

If you feel the MC44011 is right for your project, there is still time to
place a final order.[March 1999 ed.] You can also check distributors (the local
Motorola salesoffice can help with this) to see which ones have stock on hand.
As a last resort, Rochester Electronics in Massachusetts specializes in stocking
discontinued parts, and may be able to supply you with parts for some time.

Thanks for your response,
Applications Engineering
Motorola