Improved Signal Processing Techniques for Color Television Broadcasting

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 77, No. 3, pp. 221–228
Abstract: A new technique for image enhancement permits both vertical and horizontal equalization of an encoded NTSC signal without the generation of black-and-white overshoots and without the use of clippers in the main signal path. A phantom channel is used to improve the long-term drift characteristics of the equalizer. Level dependent equalization and crispening are also employed to permit a maximum of equalization with a minimum introduction of noise. A companion masking amplifier employs low-pass filters in the masking channel to permit optimum live camera, pre-gamma masking without the introduction of noise. When used together these two units produce considerable subjective improvement in the broadcast color signal.
Publication Date: 1968-03-01
DOI: 10.5594/J07030
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J07030
Author(s): R. H. McmannCBS Laboratories, High Ridge Rd., Stamford, Conn. 06905
A. A. GoldbergCBS Laboratories, High Ridge Rd., Stamford, Conn. 06905
Copyright: © 1968 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

A Vertical Aperture Equalizer for Television [Active]
1. Sullivan M. V. , “Highlight equalizer sharpens TV pictures,” Electronics , Jan. 1958 . EXTERNAL
3. Howorth D. , “A method of calibration of an experimental vertical aperture corrector,” BBC Research Department Report No. T-097/2, 1963 . EXTERNAL
4. Goldmark P. C. Hollywood J. M. , “A new technique for improving the sharpness of television pictures,” Proc. IRE , Oct. 1951 . EXTERNAL
5. Deutsche Patentschrif NR-1156841 vom 15 April 1954 , The Marconi Company. EXTERNAL
6. Mullenger K. E. McMann R. H. Jr , “Correction circuits for color TV transmitters,” Electronics , April 1956 . EXTERNAL
7. Burr R. P. , “The use of electronic masking in color television,” Proc. IRE , Jan. 1954 . EXTERNAL
8. Brewer Ludd Pinney , “Proposed controls for electronic masking in color television,” IRE Convention Record , 1955 , Part 7, pp. 63 – 68 . EXTERNAL

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R. H. Mcmann and A. A. Goldberg; Improved Signal Processing Techniques for Color Television Broadcasting, Journal of the SMPTE ( Volume: 77, Issue: 3, March 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J07030

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R. H. Mcmann and A. A. Goldberg; Improved Signal Processing Techniques for Color Television Broadcasting, Journal of the SMPTE ( Volume: 77, Issue: 3, March 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J07030

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<span class="citation">R. H. Mcmann and A. A. Goldberg; <cite>Improved Signal Processing Techniques for Color Television Broadcasting</cite>, Journal of the SMPTE ( Volume: 77, Issue: 3, March 1968); SMPTE, 1968. Available at <a href="https://doi.org/10.5594/J07030" target="_blank" rel="noopener">https://doi.org/10.5594/J07030</a></span>

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R. H. Mcmann and A. A. Goldberg; Improved Signal Processing Techniques for Color Television Broadcasting, Journal of the SMPTE ( Volume: 77, Issue: 3, March 1968); SMPTE, 1968
doi: 10.5594/J07030
url: https://doi.org/10.5594/J07030

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<li>
R. H. Mcmann and A. A. Goldberg; <cite id="bib-10-5594-j07030">Improved Signal Processing Techniques for Color Television Broadcasting</cite>, Journal of the SMPTE ( Volume: 77, Issue: 3, March 1968); SMPTE, 1968
<span class="doi">10.5594/J07030</span>
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Referenced By

Optimizing the Encoding Process to Overcome the Major Defects of NTSC Color Pictures [Active]
Color Television Film Recording from a Shadow-Mask Picture Tube [Active]
Laser-Beam Recorder for Color Television Film Transfer [Active]
Color Correction Techniques for Television Cameras [Active]
Digital Television Image Enhancement [Active]
Digital Techniques for Reducing Television Noise [Active]