[Coco] S-video Prospects...

[jdaggett at gate.net]

As far as I am concerned this subject is dead for me. 

I don't need to be insulted in an open forum like this. I think your comments 
and assumptions are unfounded and not conducive to any further discssion 
from my part. 

james

On 5 Jan 2006 at 4:57, Stephen H. Fischer wrote:

From:           	"Stephen H. Fischer" <SFischer1 at MindSpring.com>
To:             	"CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Subject:        	Re: [Coco] S-video Prospects...
Date sent:      	Thu, 5 Jan 2006 04:57:16 -0800
Organization:   	A. Nani Mouse Inx.
Send reply to:  	CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
	<mailto:coco-request at maltedmedia.com?subject=unsubscribe>
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> Hi,

> 

> In the first attack I had great difficulty in understanding how the wrong

> statements could have been made, it took a long time to finally understand.

> 

> It has been many decades since I had a course in Analog Computing and then

> at the start of the IC digital age there was not too much time spent even

> then on Analog. I did well in almost all EE areas and understood Analog

> computing just fine.

> 

> One of the lab experiments was to show that an IC could perform a "AND"

> function, that being the state of the art at the time. They spent a lot of

> time on tubes.

> 

> As the Digital world has grown to such size today, I suspect that Analog

> Computing is still taking a back seat, perhaps not even a required part of

> current EE studies.

> 

> The first incorrect statement had to been made by trying to understand how

> the analog circuit works by applying the more well known digital processing

> methods.

> 

> Analog computing is different from digital computing and has it's

> limitations in different areas. The first attack stated a possible problem

> that a purely digital solution might have a problem with.

> 

> The Analog AD 72x IC's are using analog processing even though parts of it

> appear to be doing things using digital methods.

> 

> I must admit that the details of how the chips operates are more than I can

> understand today as I am not following that area of electronics.

> 

> Never the less, I recognized an analog process in the description even

> though my mind slipped into the digital world at first in trying to

> understand what was being done. I then built an analog understanding. I was

> able at that point to understand how someone with lots of digital knowledge

> but not as good understanding of analog computing might not take the step to

> an analog understanding and think that the analog AD72x had a digital

> problem which it of course does not.

> 

> That attack posting was the only one made to the list and may have well shut

> off postings by others.

> 

> A very glowing post was made to B.L.CoCo, one that if made to the list may

> have started some of the positive discussion that are occurring now.

> 

> That's why I said that the interest in CoCo 3 to S-Video was ZERO, basing

> that on the attack posting being the only comment made.

> 

> If you still believe that you are proving correct information, I am sorry

> for your lack of understanding of electronics.

> 

> The CoCo is in the NTSC world as so much of electronics today are. That

> world is very well understood and few if any EE's are allowed to make any

> mistake at all because any errors can be recognized very early due to the

> widespread knowledge of NTSC.

> 

> The AD72x was designed to accept input from the very well known NTSC world.

> The CoCo is a correct member of that world.

> There just cannot be any problem in connecting the two together.

> 

> Yes perhaps I have the only currently CoCo 3 operational version. I would

> have to plug the wires back into the quick bread boarding block as the AD723

> is in use every day converting the picture from my HTPC to my S-Video

> television. Perhaps I would make a cable with the three 100 Ohm resistors

> and eliminate the breadboard.

> 

> Yes I am waiting for someone to duplicate the circuit and announce that it

> works just fine for them also. As there are no adjustments at all and

> assuming that the circuit is built correctly I am sure that the same great

> results will be obtained.

> 

> The AD73x was designed to perform a specific function, the exact same one

> that I am using it for in both the HTPC and the CoCo 3 applications. The

> exact function that it is being sold in large quantities to perform in a

> very wide list of projects. As several versions have already been produced

> and sold it appears to be a very profitable item.

> 

> We should be supporting any and all CoCo projects and not trying to kill

> them which seems to be the motivation for these absurd attacks.

> 

> None of your comments have been useful except perhaps to continue the

> negative tone that this list takes on too much of the time.

> 

> We need to spend more time helping people produce successful projects

> instead of pointing out each and every possible problem.

> 

> Please be more careful showing your lack of understanding.

> 

> As to the cost, any price can be obtained, with my well stocked parts bin

> and several electronic sources still open I think it is reasonable.

> 

> If you are trying to get a cost estimate by buying one of each quantity at a

> store with high markups, then you will come up with a total that is very

> high. We each have different resources.

> 

> Some of the prices quoted elsewhere appear to be high and some too low. As

> to producing a product with SM parts made in China with a quantity of less

> than ten I expect the $95 board to be cheaper. Quantity counts.

> 

> 

> jdaggett at gate.net wrote:

> > Well excuse me for pissing you off!

> >

> > While your little experiment seems to work on a vast sample of "ONE", I

> > am not convince

> > that your simple circuit is robust to work on many. Secondly I have

> > stated two issues that

> > are not false information. So if you think that they trivial then that is

> > your choice. Granted I have not tried the AD725 in any circuit form so I

> > cannot verify your claims. IF this is an anoyance to you then so be it. I

> > will then be anoying. I have just issued some concerns from the

> > specifications of both the AD725 and the Color Computer itself.

> >

> > Besides I think you far under estimate the material costs. The chip alone

> > is $9 and a 16 pin surfboard is in the $6 range. Two items and you are

> > already at $15. Now if one has a very

> > well stocked parts bin then maybe $15 is realistic. I seriously doubt

> > that the average person out there can do it for that cost.

> >

> >

> >

> > james

> >

> >

> > On 4 Jan 2006 at 18:22, Stephen H. Fischer wrote:

> >

> > From:           "Stephen H. Fischer" <SFischer1 at MindSpring.com>

> > To:             "CoCoList for Color Computer Enthusiasts"

> > <coco at maltedmedia.com>

> > Subject:        Re: [Coco] S-video Prospects...

> > Date sent:      Wed, 4 Jan 2006 18:22:57 -0800

> > Organization:   A. Nani Mouse Inx.

> > Send reply to:  CoCoList for Color Computer Enthusiasts

> > <coco at maltedmedia.com>

> > <mailto:coco-request at maltedmedia.com?subject=unsubscribe>

> > <mailto:coco-request at maltedmedia.com?subject=subscribe>

> >

> >> Hi,

> >>

> >> What!!! Another stupid reply. I am getting tired of these.

> >>

> >> Most people on this list know that statement is wrong.

> >>

> >> The CoCo 3 produces *exactually* what the AD72x chips are designed to

> >> convert to NTSC S-Video.

> >>

> >> First is it was too fast or slow I forget, now this totally wrong

> >> statement.

> >>

> >> Go stand in the corner for 3 hours with a dunce hat!

> >>

> >> Stephen H. Fischer

> >>

> >> jdaggett at gate.net wrote:

> >>> Stephen

> >>>

> >>> One major problem with the AD72x series of chips is that they require

> >>> RGB interlace signal. The Coco 3 is non-interlace RGB.

> >>>

> >>> james

> 

> 

> 

> 

> 

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