Design of the A72 Digital Character Generator and its Implications

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Publisher: SMPTE — White Plains, NY
Doc Type: Conference Paper
Content Type: Original Research
Volume: 1992, No. 25, pp. 24–33
Abstract: This article discusses the design and evolution of the Abekas A72 Digital Character Generator, and discusses how its architecture has affected its evolution. The A72 was intended to offer the highest possible character quality and smooth motion effects. While these goals were achieved, the CG was initially unable to satisfy market needs for density and complexity of text pages. However, the flexibility of the design allowed the system to grow and evolve, not only to remedy its initial shortcomings, but to offer capabilities and effects previously thought impossible to implement. The use of many general-purpose processors, with software used to control even low-level tasks normally “hardwired” on a CG, allowed this growth to occur with few hardware modifications to existing A72s. This approach proved invaluable in keeping the CG up-to-date, and it is suggested that such an approach may be increasingly advantageous for future equipment design.
Publication Date: 1992-02-01
DOI: 10.5594/M00713
Link: https://doi.org/10.5594/M00713
Author(s): Adam J. WiltBorland International Scotts Valley, California
Copyright: © 1992 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 The author was with Abekas Video Systems , Redwood City, CA, from late 1988 until mid-1991, where he worked exclusively on the A72. EXTERNAL
2,3 Busby Bruce , Abekas Video Systems, made me more aware of the DVE-like nature of some A72 operations . EXTERNAL

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Adam J. Wilt; Design of the A72 Digital Character Generator and its Implications, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992. Available at https://doi.org/10.5594/M00713

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Adam J. Wilt; Design of the A72 Digital Character Generator and its Implications, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992. Available at https://doi.org/10.5594/M00713

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Adam J. Wilt; Design of the A72 Digital Character Generator and its Implications, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992. Available at https://doi.org/10.5594/M00713

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<span class="citation">Adam J. Wilt; <cite>Design of the A72 Digital Character Generator and its Implications</cite>, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992. Available at <a href="https://doi.org/10.5594/M00713" target="_blank" rel="noopener">https://doi.org/10.5594/M00713</a></span>

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Adam J. Wilt; Design of the A72 Digital Character Generator and its Implications, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992
doi: 10.5594/M00713
url: https://doi.org/10.5594/M00713

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Adam J. Wilt; <cite id="bib-10-5594-m00713">Design of the A72 Digital Character Generator and its Implications</cite>, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992
<span class="doi">10.5594/M00713</span>
</li>