A Pulse-Driven Audio Recorder/Reproducer for Film and VTR Interlock

Metadata

Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: A multichannel audio recorder/reproducer with a pulse-driven, digitally controlled, drive and control system differs radically in design from standard audio recorder/reproducer. The normal 3-phase synchronous motor is replaced with a pulse coincidence motor which will start or stop in less than 5 ms and thus offers new modes of control and interlock with either film cameras, projectors or videotape machines. The interface of the pulse coincidence principle is used in conjunction with film interlocking, automatic videotape editing and audio mixing facilities. Digital counters, coincidence circuits and comparators have been developed to provide automatic search and location presetting of prerecorded audio sequences as well as interface equipment such as Hall-effect heads.
Publication Date: 1971-04-01
DOI: 10.5594/J08905
Link: https://doi.org/10.5594/J08905
Author(s): Donald R. Collins

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Donald R. Collins; A Pulse-Driven Audio Recorder/Reproducer for Film and VTR Interlock, Journal of the SMPTE ( Volume: 80, Issue: 4, April 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J08905

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Donald R. Collins; A Pulse-Driven Audio Recorder/Reproducer for Film and VTR Interlock, Journal of the SMPTE ( Volume: 80, Issue: 4, April 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J08905

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<span class="citation">Donald R. Collins; <cite>A Pulse-Driven Audio Recorder/Reproducer for Film and VTR Interlock</cite>, Journal of the SMPTE ( Volume: 80, Issue: 4, April 1971); SMPTE, 1971. Available at <a href="https://doi.org/10.5594/J08905" target="_blank" rel="noopener">https://doi.org/10.5594/J08905</a></span>

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Donald R. Collins; A Pulse-Driven Audio Recorder/Reproducer for Film and VTR Interlock, Journal of the SMPTE ( Volume: 80, Issue: 4, April 1971); SMPTE, 1971
doi: 10.5594/J08905
url: https://doi.org/10.5594/J08905

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<li>
Donald R. Collins; <cite id="bib-10-5594-j08905">A Pulse-Driven Audio Recorder/Reproducer for Film and VTR Interlock</cite>, Journal of the SMPTE ( Volume: 80, Issue: 4, April 1971); SMPTE, 1971
<span class="doi">10.5594/J08905</span>
</li>