Rare field sequential color device

[etype2]

1993

Mitsubishi HSCX6 Field Sequential Color Monitor.

Just found this rare oddity, a field sequential color monitor attached to a camcorder! I have little interest in the camcorder and quickly removed the monitor from the body of the camcorder and opened it up to find out how it works. I may need the camcorder as a backup to power the monitor, but it’s my goal to create a stand alone miniature monitor curiosity for display purposes. It requires a 6 volt power supply or 220 volts mains supply. It uses a 6 segment color cone which is angled in front of a 0.7 inch monochrome CRT, quite possibly the smallest CRT made. The cone is attached directly to a motor by drive shaft which spins at high speed to fool the brain in seeing a flicker less full color display. Mitsubishi claims this approach offers higher resolution and brighter images compared to the beam index or LCD methods, because there is no shadow mask or color dots used.

For a small-sized high quality color monitor using this system, the NTSC video signal (simultaneous signal) was converted into the video signal of a field sequential color display system. Mitsubishi decided to separate the NTSC signal into three primary color video signals, and display them sequentially in each field to achieve the field sequential primary color video signal . The frame frequency of the signal is 10 Hz (1/3 of that of an NTSC system), less than that formerly used in the 1951 CBS system, 24 Hz. So it is not acceptable because color flicker is conspicuous . In order to reduce the color flicker to the same level in NTSC, Mitsubishi decided to display the separated primary color video signal sequentially in each field after time compression by 1/3 , and increased its frame frequency by 3 (three) times (to 90 Hz). Using this method , the same level of frame frequency as that of an NTSC signal is achieved.

We will update this post after we get the monitor operating. We have full schematics and hopefully the monitor components are not damaged. Stay tuned.

https://visions4netjournal.com/wp-co...1D488886A.jpeg

https://visions4netjournal.com/wp-co...562158F56.jpeg

https://visions4netjournal.com/wp-co...D02461C5D.jpeg

https://visions4netjournal.com/wp-co...8DE3315F0.jpeg

https://visions4netjournal.com/wp-co...4657CD534.jpeg

https://visions4netjournal.com/wp-co...7D82B02DA.jpeg

https://visions4netjournal.com/wp-co...BD2CBB69C.jpeg

https://visions4netjournal.com/wp-co...0FD0AF7F2.jpeg

Scroll down to bottom of this page to see all photos. https://visions4netjournal.com/page-five-trinitron/