{ "$schema": "/api/schemas/documents.schema.json", "apiVersion": "1.0.0", "generatedAt": "2026-06-17T23:49:39.838Z", "sourcePath": "src/main/data/docs", "docId": "10.5594-J01247", "document": { "abbrevTitle": "J SMPE", "abbrevTitle$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "abstract": "This paper shows, both from previous data and fundamental considerations, the close control of carbon position necessary to obtain constant light on the projection screen, particularly with reflector-type high-intensity carbon arc lamps. Review of the characteristics of this type of lamp and optical system reveals that in order to obtain constant light on the screen it is necessary to avoid variation of carbon position and changes in arc current due to line-voltage fluctuations. Methods of arc control employing photoelectric cells and bimetallic thermostats directly responsive to carbon position have been analyzed with regard to their applicability for this purpose. Some examples of these have been constructed and have demonstrated that automatic devices of simple construction are capable of maintaining constant the intensity, distribution, and color of the light on the projection screen.", "abstract$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "articleType": "research-article", "articleType$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "authors": [ "D. J. Zaffarano", "W. W. Lozier", "D. B. Joy" ], "authors$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "copyright": { "holder": "Society of Motion Picture and Television Engineers, Inc.", "holder$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "year": "1941", "year$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" } }, "copyright$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "docId": "10.5594-J01247", "docId$meta": { "confidence": "high", "note": "Derived from DOI 10.5594/J01247", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "docLabel": "Journal of the Society of Motion Picture Engineers ( Volume: 37, Issue: 11, November 1941)", "docLabel$meta": { "confidence": "medium", "note": "Composed from journal title, volume, issue and date", "source": "inferred", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "docTitle": "Improved Methods of Controlling Carbon Arc Position", "docTitle$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "docType": "Journal Article", "docType$meta": { "confidence": "high", "note": "NLM
— SMPTE journal paper", "source": "inferred", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "doi": "10.5594/J01247", "doi$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "href": "https://doi.org/10.5594/J01247", "href$meta": { "confidence": "high", "note": "Constructed from DOI 10.5594/J01247", "source": "inferred", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "issn": { "print": "0097-5834", "print$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" } }, "issn$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "journalAcronym": "MIJR", "journalAcronym$meta": { "confidence": "high", "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/08182015 BACKFILE JOURNAL FRESH/smptej_37_11/MIJR15Vol37No11.xml)", "source": "parsed", "updated": "2026-06-16T00:32:03.060Z", "version": "smpte-journal-issue-xml@v1" }, "number": "11", "number$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "pages": "485–501", "pages$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "publicationDate": "1941-11-01", "publicationDate$meta": { "confidence": "high", "note": "Day absent in NLM source — padded to 01", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "publisher": "SMPTE", "publisher$meta": { "confidence": "high", "note": "Normalised to registry \"SMPTE\" convention from NLM publisher-name (The Society of Motion Picture and Television Engineers)", "source": "inferred", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "publisherLocation": { "city": "White Plains, NY", "city$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "country": "USA", "country$meta": { "confidence": "high", "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/08182015 BACKFILE JOURNAL FRESH/smptej_37_11/MIJR15Vol37No11.xml)", "source": "parsed", "updated": "2026-06-16T00:32:03.060Z", "version": "smpte-journal-issue-xml@v1" } }, "publisherLocation$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" }, "status": { "active": true, "active$meta": { "confidence": "medium", "note": "No explicit status in NLM source — journal articles default active", "source": "inferred", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" } }, "volume": "37", "volume$meta": { "confidence": "high", "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01247.xml)", "source": "parsed", "updated": "2026-05-22T18:56:53.245Z", "version": "smpte-journal-article-nlm@v1" } } }