On-Screen-Display chip for NTSC needed

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#1
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Hi All

I am looking for an On-Screen-Display chip for NTSC
Something as easy to use as the STM stv5730 but with graphics

Thanks
Squiggy

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Check Hitachi

Jim Wagner

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

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I don't know of ANY chips that handle graphis like the LCD controllers do. You will have to do bitmap blocks if 7X9, or whatever, blocks.

And, I do not know of any that allow multiple colors within a single block. The Hitachi chips do a bit more than the STV, but not a great amount more. And, I was not impressed with the image quality.

Jim

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

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Thanks Jim

OK, I figure I will have to use programmed characters to build up a bitmapped image, that will do.

Do you know Hitachi part numbers?

Thanks
Squiggy

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I don't know them off hand.

A search of the Hitachi web site should find them. I think their name changed (to something like "Renesais") but a google for Hitachi should find it.

Jim

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

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If you are in the US and an actual developer, Arrow is a good contact point for Hitachi.

Jim

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

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Thanks much Jim
I'm reading the pdf now

Squiggy

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There is a serial to NTSC or PAL onscreen display unit out there.
I forgoet what or where it is, but a Google search should turn up a bunch of hits. Dontronics was selling one too.
The Basic Stamp people used to use it a lot for different things.

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Hi,

Are you talking about the bob units? See http://www.decadenet.com/ Only has "pseudo graphics" though.

-Colin

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Hi Colin

I am really looking for the 'bare components" to be integrated into a project I am considering.

I've looked at the BOB3, looks good, but not what I need.
I would like to know what chip they are using.

Squiggy

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My understaning is that that use some sort of programmable logic of their own design. They are not far from where I am, and one of my former cohorts visited them, so that is second-hand at best.

Jim

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

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Yes the BOB's those are the units.
The BOB I, I believe used a IC that one could buy. But the manufacturer discontinued them a few years ago and the supply has dried up a lot since then.

If I remember right, it was the IC they used in this unit http://www.icircuits.com/osd-232...
http://www.rfdigital.com/item.ht...
But this may have evolved into the BOB series though.

There is this elusive chip http://www.dontronics.com/dt108....
that Dontronics is selling only as a package deal. The STV5730A OSD Video Chip is probably a newer version of the one I remember from a while back.