<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Allan,<div><br></div><div>Yes, Steve did mention investigating a non-contact quad at the NAB meeting last April. I don't think it received a resounding accveptance but I think it has merit.</div><div><br></div><div>Since the magnetic field reduced greatly as distance is increased between tape and head, you would need a focused and high gain method of reading the magnetic variations. Perhaps the same spinning heads but not touching the tape, like a hard drive where the head is right above the platter but never touches it. It may be that the magnetism of a quad tape is much higher than a hard drive plater and be "easy" to read (magnetic flux density or tesla units or webers per square meter).</div><div><br></div><div>And then, it may be interesting to use a "track developer" to see the tracks and then read them optically. </div><div><br></div><div>Time base correction will take care of timing errors and you could paint out dropouts like Quantel does by taking the previous or following field and replacing the line.</div><div><br></div><div>Much work needs to be done.</div><div><br><div apple-content-edited="true"> <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-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><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; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><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; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; 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; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; 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; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div><div>Best,</div><div>Park</div><div><br></div><div>C. Park Seward</div><div>Technical Manager</div><div>KABC-TV</div><div>"An Evening at the Academy Awards"</div><div>Cell: 818-535-2747</div><div>Home: 949-679-1870</div><div>KABC office 818-863-7331</div><div>Visit us: <a href="http://www.videopark.com">http://www.videopark.com</a></div></div></span></div></span></div></span></div></span></div></span> </div><br><div><div>On Feb 16, 2009, at 6:09 AM, <a href="mailto:allanmc-avtech@comcast.net">allanmc-avtech@comcast.net</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Arial; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> At the Library of Congress, the new National Audio Visual Conservation Center at Culpeper, which I just retired from, was just commencing with the early exploration of non-contact extraction of the program media on 2" quad tape. </div><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> </p><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">- What do you think?</div><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> </p><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">- What are the challenges to be overcome?</div><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> </p><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">- Has anyone else already begun work attempting this? </div></span></blockquote></div><br></div></body></html>