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SMPTE Journal ( Volume: 102, Issue: 12, December 1993)
[ACTIVE]

Computer Graphics for Scanned Laser Displays

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
SMPTE J
Volume
102, No. 12, pp. 1125–1133
Abstract
Projected laser displays, such as those for laser light shows, often use computer-drawn graphics, which are scanned onto the screen. These vector drawings have restrictions imposed by the laser projection equipment. Conventional vector graphics programs such as AutoCADTM do not work well for laser display use. This necessitates laser-specific computer software. Current laser-scanning techniques are introduced in this article, which emphasizes the limitations of scanner technology and suggests remedies. Considerations for the design of laser graphics software are then set forth, and current laser systems are discussed, with an in-depth example using software developed by the authors. Future directions for laser display, scanning technology, and software are also reviewed.
Publication Date
1993-12-01
DOI
10.5594/J01654
ISSN
Print: 0036-1682
Link
https://doi.org/10.5594/J01654
Author(s)
Patrick MurphyPatrick Murphy (who read the paper) and William R. Benner. Jr., are with Pangolin Laser Software, Arlington, VA 22201.
William R. BennerPatrick Murphy (who read the paper) and William R. Benner. Jr., are with Pangolin Laser Software, Arlington, VA 22201.
Copyright
© 1993 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 1. Deaton K. , “Considerations in the Design of a Laser Graphics System,” Proceedings, Graphics Interface&82. National Computer Graphics Assoc. , pp. 381 – 386 . EXTERNAL
  • 2. Dryer I. , “Lasers Color Display and Entertainment Applications,” Laser Focus World , Sept. 1991 . EXTERNAL
  • 3. Hardware generation of stroked laser vectors is now being done in at least two systems, as described in the “Future Directions” section. Since all other laser systems use software generation of stroke details, the software technique is extensively discussed in this paper. EXTERNAL
  • 4. Personal communication, Sept. 1992 . The company requests anonymity. EXTERNAL
  • 5. The software for focus is trivial. The problem is hardware devices fast enough to do useful intra-image focus. Pangolin has developed a preliminary specification for such devices, in the hopes of avoiding a multiplicity of incompatible techniques. The specs are available upon request from Pangolin. EXTERNAL
  • 6. Murphy P. , “Measuring Effective Resolution: How Many Bits are Enough?” Laser Talk , Spring 1992 . International Laser Display Assoc. , Santa Monica, Calif. EXTERNAL
  • 7. There are two hardware ways to delay a signal going to an AOM. One method in use is an R-C network. Unfortunately, this slows down not only the signal, but its rise and fall characteristics, losing the advantage of sharp beam on/off edges. The preferred way is with a digital delay, which changes only the signal timing. EXTERNAL
  • 8. International Laser Display Assoc., 1126 Ashland Ave., Santa Monica, CA 90405. The standards documents mentioned in the text are available through ILDA&s Technical Standards Committee. EXTERNAL
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Patrick Murphy and William R. Benner; Computer Graphics for Scanned Laser Displays, SMPTE Journal ( Volume: 102, Issue: 12, December 1993); SMPTE, 1993. Available at https://doi.org/10.5594/J01654
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Patrick Murphy and William R. Benner; Computer Graphics for Scanned Laser Displays, SMPTE Journal ( Volume: 102, Issue: 12, December 1993); SMPTE, 1993. Available at https://doi.org/10.5594/J01654

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Patrick Murphy and William R. Benner; Computer Graphics for Scanned Laser Displays, SMPTE Journal ( Volume: 102, Issue: 12, December 1993); SMPTE, 1993. Available at https://doi.org/10.5594/J01654
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<span class="citation">Patrick Murphy and William R. Benner; <cite>Computer Graphics for Scanned Laser Displays</cite>, SMPTE Journal ( Volume: 102, Issue: 12, December 1993); SMPTE, 1993. Available at <a href="https://doi.org/10.5594/J01654" target="_blank" rel="noopener">https://doi.org/10.5594/J01654</a></span>

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Preview:
Patrick Murphy and William R. Benner; Computer Graphics for Scanned Laser Displays, SMPTE Journal ( Volume: 102, Issue: 12, December 1993); SMPTE, 1993
doi: 10.5594/J01654
url: https://doi.org/10.5594/J01654
Snippet:
<li>
Patrick Murphy and William R. Benner; <cite id="bib-10-5594-j01654">Computer Graphics for Scanned Laser Displays</cite>, SMPTE Journal ( Volume: 102, Issue: 12, December 1993); SMPTE, 1993
<span class="doi">10.5594/J01654</span>
</li>