Journal of the SMPTE ( Volume: 68, Issue: 8, August 1959)
[ACTIVE]
Synthetic Highs — An Experimental TV Bandwidth Reduction System
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- J SMPTE
- Volume
- 68, No. 8, pp. 525–537
- Abstract
- A complete system is described which codes a standard video signal to match a narrower band channel and subsequently decodes the received signal for display on a standard TV monitor. The system transmits the low-frequency, or macro-contrast signal, in analog form. The location and amplitude of the edges are transmitted by a digital code. At the receiver the edge information is used to synthesize the highs content of the video, which is then added to the lows to reconstruct the original video signal. Bandwidth reduction is achieved by exploiting both statistical correlations and psychophysical phenomena. Apparatus for the separation of low frequencies, detection of edges, quantization and binary digital coding of edge amplitude and synthetic reconstruction of highs is described. The digital coder for edge locations has been described elsewhere.1 Picture-tube photographs of the resulting pictures are shown. Factors affecting the degree of bandwidth reduction and the effect of variation of system parameters such as separation frequency and quantization levels are discussed.
- Publication Date
- 1959-08-01
- DOI
10.5594/J11028- ISSN
- Print:
0361-4573 - Link
- https://doi.org/10.5594/J11028
- Author(s)
- W. F. SchreiberResearch Dept., Technicolor Corp., P.O. Box 38–547, Hollywood 38, Calif.C. F. KnappResearch Dept., Technicolor Corp., P.O. Box 38–547, Hollywood 38, Calif.N. D. KayResearch Dept., Technicolor Corp., P.O. Box 38–547, Hollywood 38, Calif.
- Copyright
- © 1959 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- 1. Schreiber W. F. Knapp C. F. , “TV bandwidth reduction by digital coding,” IRE Convention Record , 88 – 99 , Part 4, 1958 . EXTERNAL
- 10. Kretzmer E. R. , “Reduced alphabet representation of TV signals,” IRE Convention Record , 140 – 147 , Part 4, 1956 . EXTERNAL
- 11. Byram G. M. , “Visual acuity and the photochemistry of the retina,” J. Opt. Soc. Am. , 718 – 738 , Dec. 1944 . EXTERNAL
- 12. Helmholtz H. (translated by James P. C. Southall), Physiological Optics , Optical Society of America , Rochester, N.Y. , 1925 . EXTERNAL
- 13. Evans R. M. , “Sharpness and contrast in projected pictures,” SMPTE Convention , Los Angeles, Oct. 1956 . EXTERNAL
- 14. (a) Shannon C. E. , “A mathematical theory of communication,” Bell System Tech. J. , 27 : July-Oct., 1948 (b). Fano R. M. , Tech. Rept. 65 , Mass. Inst. Tech., RLE, 1949 . EXTERNAL
- 15. Michel W. S. et al., “A coded facsimile system,” IRE Wescon Convention Record , 84 , Part 2, 1957 . EXTERNAL
- 2. Deutsch Sid , “The possibilities of reduced television bandwidth,” IRE Trans. Broadcast and Television Receivers , 69 – 82 , Oct. 1956 . EXTERNAL
- 3. Seyler A. J. , “Bandwidth reduction in television relaying,” Proc. IRE Australia , 218 – 225 , July 1955 ; 261–276, Aug. 1955. EXTERNAL
- 4. Oliver B. M. , “Efficient coding,” Bell System Tech. J. , 724 – 750 , July 1952 . EXTERNAL
- 5. Harrison C. W. , “Experiments with linear prediction in television,” Bell System Tech. J. , 764 – 783 , July 1952 . EXTERNAL
- 6. (a) Cutler C. C. , “Differential quantization of communication signals,” U.S. Patent 2,605,361, July 29, 1952 ; (b) R. E. Graham, IRE Convention Record , 100–106, Part 4, 1958. EXTERNAL
- 7. Boothroyd W. , “Dot system of color television,” Electronics , 88 – 92 , Dec. 1949 ; 96–99, Jan. 1950. EXTERNAL
- 8. Boutry G. A. Billard P. , “Visibility of recurrent structures in interlaced television,” Acta Electronica , 2 : 62 – 70 , Parts 1 and 2, 1957–1958 . EXTERNAL
- 9. Baldwin M. W. Jr. , “Demonstration of some visual effects of using frame storage in TV transmission,” IRE Convention , New York, 1958 . EXTERNAL
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W. F. Schreiber, C. F. Knapp, and N. D. Kay; Synthetic Highs — An Experimental TV Bandwidth Reduction System, Journal of the SMPTE ( Volume: 68, Issue: 8, August 1959); SMPTE, 1959. Available at https://doi.org/10.5594/J11028
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W. F. Schreiber, C. F. Knapp, and N. D. Kay; Synthetic Highs — An Experimental TV Bandwidth Reduction System, Journal of the SMPTE ( Volume: 68, Issue: 8, August 1959); SMPTE, 1959. Available at https://doi.org/10.5594/J11028
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W. F. Schreiber, C. F. Knapp, and N. D. Kay; Synthetic Highs — An Experimental TV Bandwidth Reduction System, Journal of the SMPTE ( Volume: 68, Issue: 8, August 1959); SMPTE, 1959. Available at https://doi.org/10.5594/J11028
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<span class="citation">W. F. Schreiber, C. F. Knapp, and N. D. Kay; <cite>Synthetic Highs — An Experimental TV Bandwidth Reduction System</cite>, Journal of the SMPTE ( Volume: 68, Issue: 8, August 1959); SMPTE, 1959. Available at <a href="https://doi.org/10.5594/J11028" target="_blank" rel="noopener">https://doi.org/10.5594/J11028</a></span>
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W. F. Schreiber, C. F. Knapp, and N. D. Kay; Synthetic Highs — An Experimental TV Bandwidth Reduction System, Journal of the SMPTE ( Volume: 68, Issue: 8, August 1959); SMPTE, 1959
doi: 10.5594/J11028
url: https://doi.org/10.5594/J11028
doi: 10.5594/J11028
url: https://doi.org/10.5594/J11028
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<li> W. F. Schreiber, C. F. Knapp, and N. D. Kay; <cite id="bib-10-5594-j11028">Synthetic Highs — An Experimental TV Bandwidth Reduction System</cite>, Journal of the SMPTE ( Volume: 68, Issue: 8, August 1959); SMPTE, 1959 <span class="doi">10.5594/J11028</span> </li>