Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973)
[ACTIVE]
An On-Line Computerized Light Valve Monitor System
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- J SMPTE
- Volume
- 82, No. 10, pp. 840–845
- Abstract
- In making motion-picture prints in color, the scene-to-scene color and intensity modulators (vanes in the Light Valve System) respond to a punched-paper control tape in accordance with pre-programed information obtained through color timing procedures. Any error in any one of the vanes may cause a mislight or unbalance in the intensity and color of the particular scene being printed. In order to monitor any inaccurate positions of the light modulating vane, an automatic On-Line Computerized Vane Checking System has been developed. In this system the actual angular position of each light-controlling vane is monitored and compared to a standard that is in the computer memory system. Any out-of-tolerance deviation between the desired vane position and actual position starts an automatic computer procedure resulting in a stop of the printing machine and immediate identification of the error. The system consists of electromechanical sensing equipment attached to the light vanes with signal conditioning circuitry, reader interfacing and multiplex interfacing between the film printing machine and the IBM System/7 sensor-based computer.
- Publication Date
- 1973-10-01
- DOI
10.5594/J08143- ISSN
- Print:
0361-4573 - Link
- https://doi.org/10.5594/J08143
- Author(s)
- Edward H. ReichardConsolidated Film Industries, 959 No. Seward St., Hollywood, CA 90038Howard T. La ZareConsolidated Film Industries, 959 No. Seward St., Hollywood, CA 90038Edward EfronIBM Corp., 3550 Wilshire Blvd., Los Angeles, CA 90010
- Copyright
- © 1973 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- A New Continuous Additive Color Printer for High-Speed Production [Active]
- Use of Xenon Flashtubes as a Light Source in Color and Black-and-White Scene Testers [Active]
- An Automatic 35mm A&B Composite Color Printer [Active]
- An Instantaneous Electronic Color-Film Analyzer [Active]
- An Automatic Additive Color Printer [Active]
- 1. Elements of Color in Professional Motion Pictures , SMPTE , Scarsdale, N.Y. , 1957 . EXTERNAL
- 5. Bell & Howell Model C Printer Instruction Manual. . EXTERNAL
- 6. Curves and Schematics courtesy engineering catalogs of RVDT Manufacturer . EXTERNAL
- Progress Report (Hazeltine Color Analyzer) Jour. SMPTE , 77 : p. 321 , May 1968 . EXTERNAL
- Hazeltine Color Analyzer, solid state , Adv., Jour. SMPTE , 78 : p. 927 , Oct. 1969 . EXTERNAL
- Progress Report (Bell & Howell Additive Color Printer) Jour. SMPTE , 73 : p. 374 , May 1964 . EXTERNAL
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Edward H. Reichard, Howard T. La Zare, and Edward Efron; An On-Line Computerized Light Valve Monitor System, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J08143
Snippet:
Edward H. Reichard, Howard T. La Zare, and Edward Efron; An On-Line Computerized Light Valve Monitor System, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J08143
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Edward H. Reichard, Howard T. La Zare, and Edward Efron; An On-Line Computerized Light Valve Monitor System, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973. Available at https://doi.org/10.5594/J08143
Snippet:
<span class="citation">Edward H. Reichard, Howard T. La Zare, and Edward Efron; <cite>An On-Line Computerized Light Valve Monitor System</cite>, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973. Available at <a href="https://doi.org/10.5594/J08143" target="_blank" rel="noopener">https://doi.org/10.5594/J08143</a></span>
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Edward H. Reichard, Howard T. La Zare, and Edward Efron; An On-Line Computerized Light Valve Monitor System, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973
doi: 10.5594/J08143
url: https://doi.org/10.5594/J08143
doi: 10.5594/J08143
url: https://doi.org/10.5594/J08143
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<li> Edward H. Reichard, Howard T. La Zare, and Edward Efron; <cite id="bib-10-5594-j08143">An On-Line Computerized Light Valve Monitor System</cite>, Journal of the SMPTE ( Volume: 82, Issue: 10, October 1973); SMPTE, 1973 <span class="doi">10.5594/J08143</span> </li>