<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>Yes, Park,<br><br>Everything that has been stated before, by everyone is correct, the "C" format was based on the moving head technology, which changed the dropout position as a result of the greater interchange stability of the format. We added the "sync" head as an option, to make our machine the same as Sony. <br>I was not part of the "C" format related effort, since I had be given the AVR-3, the last quad, and the largest retrofit program in Ampex's history. It was developed to be a great machine, but had a product manager who didn't understand engineering and was also more interested in the editing system we were working with a Canadian Company, Central Dynamics Limited.<br>My first "C" format product was the VPR-20, with was the VPR-10, which did not get to market, revised to "C" format.
It was a very good, but heavy "porterable"( <span style="font-style: italic;">my word</span>, which meant, give somebody $5-$10 and let them carry the 50lb unit)<br><br>Bill Carpenter<br></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> C. Park Seward <park@videopark.com><br><b><span style="font-weight: bold;">To:</span></b> Quad List <quadlist@quadvideotapegroup.com><br><b><span style="font-weight: bold;">Sent:</span></b> Sun, February 7, 2010 9:02:24 AM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [QuadList] Blanking Issues<br></font><br>
<base>Yes, that is the way I remember. Sony insisted on recording the entire video. My Ampex machines did not have the sync head and I never missed it.<div><br></div><div>Bill Carpenter may shed more light.<br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;"><div style="word-wrap: break-word;"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px;
text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px;"><div style="word-wrap: break-word;"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px;"><div><div><br class="Apple-interchange-newline">Best,</div><div>Park</div><div><br></div></div><div>C. Park Seward</div><div><span>Visit us: <a target="_blank" href="http://www.videopark.com">http://www.videopark.com</a></span></div><br class="Apple-interchange-newline"></span></div></span></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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<br><div><div>On Feb 7, 2010, at 7:50 AM, Wayne Watson wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;"><div><div dir="ltr"><font size="2" color="#000000" face="Tahoma">It was in the SMPTE standard. Ampex made it an option and Sony made it standard. The concern was that something in the future might need the V.I. However in type C only lines 4 to 14 were missing so VITC and VITS were still there. I think there was also an issue where Sony did not want tp pay re a patent Ampex had on control track update (or something like that)and needed the V.I. to do it their way. Can anyone shed more light on
that?</font></div><div id="divRpF276414" style="direction: ltr;"><hr tabindex="-1"><font size="2" face="Tahoma"><b>From:</b><span class="Apple-converted-space"> </span><a rel="nofollow" ymailto="mailto:quadlist-bounces@quadvideotapegroup.com" target="_blank" href="mailto:quadlist-bounces@quadvideotapegroup.com">quadlist-bounces@quadvideotapegroup.com</a><span class="Apple-converted-space"> </span>[quadlist-bounces@quadvideotapegroup.com] On Behalf Of Scott Thomas [scottgfx@mac.com]<br><b>Sent:</b><span class="Apple-converted-space"> </span>Saturday, February 06, 2010 11:59 PM<br><b>To:</b><span class="Apple-converted-space"> </span>Quad List<br><b>Subject:</b><span class="Apple-converted-space"> </span>[QuadList] Blanking Issues<br></font><br></div><div></div><div><div>Talking about Type-C for a moment; I can't remember if it was Sony or Ampex (or both?), but they had a separate "sync" head on the scanner. I'm assuming that was
to have a clean sync pulse on the head switch? A problem obviated by a TBC?</div><div><br></div><div>Scott Thomas</div><br><div><div>On Feb 6, 2010, at 5:20 PM, Don Norwood wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span"><div><div>Hi Park:</div><div> </div><div>All of the Type-A 1" machines up thru the VR-7800 had the switch above the vertical interval. The VPR-7900 was the first to place it in the vertical. Remember also that the Type-A machines are single head, so there is more than a "switch", there is a dropout for several lines. The VR-660 is a 2-head design so there is a switch and no dropout.</div><div> </div><div>When Sony made their first 1/2" machines, there was apparently some "reverse engineering" done on their Ampex predecessors. Although the Sony machines were 2-head, they had a "blanking" circuit that covered up the switching point and
produced a totally blank area in the same location as the Ampex Type-A. There was no logical reason for that other than replicating the output signal of the Ampex. The practice was discontinued in subsequent models.</div><div> </div><div>Don Norwood<br><a rel="nofollow" target="_blank" href="http://www.digitrakcom.com">www.digitrakcom.com</a> </div></div></span></blockquote></div></div>_______________________________________________<br>Please trim posts to relevant info when replying!<br>Send QuadList list posts to<span class="Apple-converted-space"> </span><a rel="nofollow" ymailto="mailto:QuadList@quadvideotapegroup.com" target="_blank" href="mailto:QuadList@quadvideotapegroup.com">QuadList@quadvideotapegroup.com</a><br>Your subscribe, unsubscribe and digest options are here:<br><span><a target="_blank"
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