Journal of the Society of Motion Picture and Television Engineers ( Volume: 57, Issue: 4, October 1951)

[ACTIVE]

Electrical and Photographic Compensation in Television Film Reproduction

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 57, No. 4, pp. 289–307
Abstract: The reproduction of filmed material over the television system seldom approaches the quality of direct projection. The degradation in quality is usually apparent as loss of detail, compression in both the highlights and the shadows, increased fluctuation noise and the introduction of spurious signals in the form of shading, edge flare, spots and halo. Loss of detail and distortion of the contrast rendition can be reduced by the employment of electrical compensation. Such methods have been employed with varying degrees of success. The extent to which they can be used is limited by the aggravation of noise and spurious signals. Conventional photographic processes do not permit an increase in detail to be achieved while attempts to minimize the compression of the highlights and shadows by reducing the range of the positive transparency to be televised are accompanied by loss of resolution due to the lowered contrast in the fine detail.
Publication Date: 1951-10-01
DOI: 10.5594/J06280
ISSN: Print: 0898-042X
Link: https://doi.org/10.5594/J06280
Author(s): P. J. HerbstEngineering Products Dept., RCA Victor Div., Camden 2, N. J.
R. O. DrewEngineering Products Dept., RCA Victor Div., Camden 2, N. J.
S. W. JohnsonEngineering Products Dept., RCA Victor Div., Camden 2, N. J.
Copyright: © 1951 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Schade O. H. , “Electro-optical characteristics of television systems, Part I: Characteristics of vision and visual systems,” RCA Rev. , vol. IX , no. 1 , pp. 13 – 37 , Mar. 1948 . EXTERNAL
10. Johnson M. V. , “Print control with blurred positive masks,” Am. Phot. , vol. 37 , pp. 14 – 16 , Mar. 1943 . EXTERNAL
11. Yule J. A. C. , “Unsharp masks,” J. Phot. Soc. Am. , vol. 11 , no. 3 , pp. 123 – 132 , Mar. 1945 . EXTERNAL
12. Schade O. H. , “Image gradation, graininess and sharpness in television and motion picture systems, Part I: Image structure and transfer characteristics,” Jour. SMPTE , vol. 56 , pp. 137 – 177 , Feb. 1951 . EXTERNAL
2. Schade O. H. , “Electro-optical characteristics of television systems, Part II: Electro-optical specifications for television systems,” RCA Rev. , vol. IX , no. 2 , pp. 245 – 286 , June 1948 . EXTERNAL
3. Schade O. H. , “Electro-optical characteristics of television systems, Part III: Electro-optical characteristics of camera systems,” RCA Rev. , vol. IX , no. 3 , pp. 490 – 530 , Sept. 1948 . EXTERNAL
4. Schade O. H. , “Electro-optical characteristics of television systems, Part IV: Correlation and evaluation of electrooptical characteristics of imaging systems,” RCA Rev. , vol. IX , no. 4 , pp. 653 – 686 , Dec. 1948 . EXTERNAL
5. Cook E. D. , “The aperture effect,” Jour. SMPE , vol. 14 , pp. 650 – 662 , June 1930 . EXTERNAL
6. Cawein M. , “Television resolution as a function of line structures,” Proc. IRE , vol. 33 , pp. 855 – 864 , Dec. 1945 . EXTERNAL
7. Janes R. B. Johnson R. E. Moore R. S. , “Development and performance of television camera tubes,” RCA Rev. , vol. X , no. 2 , pp. 191 – 223 , June 1949 . EXTERNAL
8. Janes R. B. Rotow A. A. , “Light transfer characteristics of image orthicons,” RCA Rev. , vol. XI , no. 3 , pp. 364 – 376 , Sept. 1950 . EXTERNAL
9. Townsend C. L. Goodale E. D. , “The orthogam amplifier,” RCA Rev. , vol. XI , no. 3 , pp. 399 – 410 , Sept. 1950 . (Abstract in Jour. SMPTE , vol. 56, pp. 76–78, Jan. 1951.). EXTERNAL

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P. J. Herbst, R. O. Drew, and S. W. Johnson; Electrical and Photographic Compensation in Television Film Reproduction, Journal of the Society of Motion Picture and Television Engineers ( Volume: 57, Issue: 4, October 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J06280

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P. J. Herbst, R. O. Drew, and S. W. Johnson; Electrical and Photographic Compensation in Television Film Reproduction, Journal of the Society of Motion Picture and Television Engineers ( Volume: 57, Issue: 4, October 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J06280

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<span class="citation">P. J. Herbst, R. O. Drew, and S. W. Johnson; <cite>Electrical and Photographic Compensation in Television Film Reproduction</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 57, Issue: 4, October 1951); SMPTE, 1951. Available at <a href="https://doi.org/10.5594/J06280" target="_blank" rel="noopener">https://doi.org/10.5594/J06280</a></span>

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P. J. Herbst, R. O. Drew, and S. W. Johnson; <cite id="bib-10-5594-j06280">Electrical and Photographic Compensation in Television Film Reproduction</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 57, Issue: 4, October 1951); SMPTE, 1951
<span class="doi">10.5594/J06280</span>
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