[aprssig] SSTV camera from Argent

[Scott Miller]

The camera image is scaled down from 640x480 to 320x240.  Technically 
the SSTV modes are analog so there's no fixed horizontal resolution, 
it's only constrained by the bandwidth, but the SR1 transmits 320 pixels 
horizontally.

Scott
N1VG

On 5/25/2011 2:32 PM, Andrew Rich wrote:
> Scott,
>
> What is the relationship between the number of lines in the video and
> the SSTV image ?
>
> - Andrew -
>
> ----- Original Message ----- From: "Scott Miller" <scott at opentrac.org>
> To: "TAPR APRS Mailing List" <aprssig at tapr.org>
> Sent: Thursday, May 26, 2011 7:06 AM
> Subject: Re: [aprssig] SSTV camera from Argent
>
>
>>> Judging from the sample pic on Scott's website, the text overlay is at
>>> such a small point size that it would be nearly illegible in the Robot
>>> mode. I assume you would will implement the switches or jumpers to force
>>
>> It doesn't do the character generator at all in Robot mode. I
>> initially put it in because the Scotty modes were 256 lines and the
>> camera scaled down most easily to 240 lines, so I was left with 16
>> lines to fill up.
>>
>>> How well does the gadget deal with daylight light levels?
>>
>> It does OK, though I think it doesn't have an IR cut filter so colors
>> can be off.
>>
>> Once I get a frame buffer set up to handle BT.656 data, I'll have a
>> lot more camera options - both NTSC/PAL decoders and modern cell phone
>> style cameras.
>>
>> Scott
>> N1VG
>>
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>
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