Prop Backpack and Video Overlay functions
Buck Rogers
Posts: 2,185
Hello!
One of Don Lancaster's ideas for his TV Typewriter kits was in overlaying text typed out on his rig onto an existing video image. In his examples, he used an existing program. The idea was that the thing would be perfect for adding the text as seen at the bottom of programming for the hearing impaired.
Am I correct in my understanding in that the Prop Back can do something like that after the matching blob is delivered to it using a Prop Clip and an appropriate program?
Consider this example,
That there is my software loopback program. I wrote it last month to accept an ASCII character from something connected to where the Serial Port is positioned. In that one the RD connection is at Pin 0, and the TD one is at Pin 1. My next step was to mirror it on a video display. Possibly with an overlay of a video image, perhaps of a matching device displaying the code at work.
By matching device in this context, the device doing the sending is a classic Palm Pilot Model M100 which can be seen at:
http://en.wikipedia.org/wiki/Palm_m100_series
And here's a photo borrowed from the page
Oddly enough mine has the silver snap-on applied.
What I had in mind was to aim the video camera collecting the image at a Palm IIIXE device, which can be seen here:
http://en.wikipedia.org/wiki/Palm_IIIxe
And here's the obligatory photo of the thing:
Now I'm going to close this one with a request. All questions answered and an argument entertained.
One of Don Lancaster's ideas for his TV Typewriter kits was in overlaying text typed out on his rig onto an existing video image. In his examples, he used an existing program. The idea was that the thing would be perfect for adding the text as seen at the bottom of programming for the hearing impaired.
Am I correct in my understanding in that the Prop Back can do something like that after the matching blob is delivered to it using a Prop Clip and an appropriate program?
Consider this example,
' {$STAMP BS2}
' {$PBASIC 2.5}
X VAR Word
DD VAR Word
FOR DD=0 TO 255
SERIN 0, 16468, [X]
PAUSE 220
SEROUT 1, 16468, [X]
NEXT
That there is my software loopback program. I wrote it last month to accept an ASCII character from something connected to where the Serial Port is positioned. In that one the RD connection is at Pin 0, and the TD one is at Pin 1. My next step was to mirror it on a video display. Possibly with an overlay of a video image, perhaps of a matching device displaying the code at work.
By matching device in this context, the device doing the sending is a classic Palm Pilot Model M100 which can be seen at:
http://en.wikipedia.org/wiki/Palm_m100_series
And here's a photo borrowed from the page
Oddly enough mine has the silver snap-on applied.
What I had in mind was to aim the video camera collecting the image at a Palm IIIXE device, which can be seen here:
http://en.wikipedia.org/wiki/Palm_IIIxe
And here's the obligatory photo of the thing:
Now I'm going to close this one with a request. All questions answered and an argument entertained.
220 x 165 - 7K
140 x 242 - 12K
Comments
Are there any examples of a Palm displaying live video? If so, it probably uses a format other than NTSC.
I don't think the Prop Backpack has any particular advantages over other Propeller boards when used to communicate with a Palm.
I take that back. The Propeller Backpack combined with the PropCam may make it easier to get video images into the Palm but I have no idea how one would do this.
Here'a link to a thread about overlaying custom characters with a Backpack. (It's the only overlay thread I had handy.) I see there are other overlay links in the "Similar Threads" section.
Edit to add: The Propeller Backpack can receive serial communication from another microcontroller without the need of a Prop Clip or Prop Plug. The Prop Clip or Prop Plug are only needed when communicating with a PC over a USB connection.
Hello!
Well in this case I didn't explain fully, the output will be displayed on http://www.adafruit.com/products/910 which is currently the only small display I have here.
That's the 3.5" one but its close enough for this discussion. According to the page above, these displays will work on anything which produces NTSC or even PAL video. So I've managed get my other work with the BS2 and the Prop Backpack (Hobo) to work on it, after testing via the big screen which I do have. That is really an HDTV set with a composite video port.
The original purpose in obtaining the unit was to work towards displaying information. In this case it would be circulating data from a Palm Pilot unmodified. That is the data travels around in a loop and isn't modified by any examples of logic I do have here. The next steps will be working out how that second Palm Pilot is involved in everything, before completing the rest of it.
I'm looking to overlay the first Palm sending data around over a video of the second standing there on a cradle first. Without the one named second being connected to the whole business.
I see you were asking about loading a program onto the Propeller Backpack with the Prop Clip not asking if you can use the Prop Clip to communicate with the Backpack.
I don't understand what you're asking well enough to provide any useful information. I'll stop while I'm behind.
Hello!
Actually your getting it. However right now something is avoiding you. I believe it has to do with something else.
Phil's manual for the Backpack covers a lot of detail, so plan on spending some time studying it.