SMPTE Journal ( Volume: 96, Issue: 1, January 1987)
[ACTIVE]
Digital Television at 45 Mbits/Sec
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- J SMPTE
- Volume
- 96, No. 1, pp. 4–10
- Abstract
- An algorithm and a real-time hardware implementation are described for coding composite NTSC signal sampled at 4X color subcarrier into 45 Mbits/sec while preserving network quality. Adaptive differential pulse-code modulation and variable word-length coding are used to minimize the data source rate for the channel, requiring a buffer to smooth the data rate. Predictors and predictor-selection techniques are described. Variable word-length code sets were designed for each. Resultant data rates were used as a measure to determine the best predictor-selection technique for use. The coder switches between various modes of operation depending on buffer content or fullness. When the buffer fullness increases sufficiently, a mode with a coarser quantizer is used. For higher values, 4:3 and 2:1 subsampling is used. Tests and demonstrations are done on a combination hardware/software test-bed.
- Publication Date
- 1987-01-01
- DOI
10.5594/J04027- ISSN
- Print:
0036-1682 - Link
- https://doi.org/10.5594/J04027
- Author(s)
- R. C. BrainardAT&T Bell Laboratories, Holmdel, N.JA. N. NetravaliAT&T Bell Laboratories, Holmdel, N.J
- Copyright
- © 1987 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- Programmable Test-Bed for Composite Television Coding [Active]
- Composite Television Coding: Subsampling and Interpolation [Active]
- Predictive Coding of Composite NTSC Color Television Signals [Active]
- 1. Brainard R. C. Netravali A. N. , “Digital Broadcast TV at 45 Mbit/s,” Globecom '82 Conference Record , B6 , 1 , Nov. 1982 . EXTERNAL
- 5. Huffman D. A. , “A Method for the Construction of Minimum-Redundancy Codes,” Proc. IRE , 40 : 1098 , Sept. 1952 . EXTERNAL
- 6. Gilbert E. N. Moore E. F. , “Variable-Length Binary Encodings,” BSTJ. , 38 : 933 – 967 , July 1959 . EXTERNAL
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R. C. Brainard and A. N. Netravali; Digital Television at 45 Mbits/Sec, SMPTE Journal ( Volume: 96, Issue: 1, January 1987); SMPTE, 1987. Available at https://doi.org/10.5594/J04027
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R. C. Brainard and A. N. Netravali; Digital Television at 45 Mbits/Sec, SMPTE Journal ( Volume: 96, Issue: 1, January 1987); SMPTE, 1987. Available at https://doi.org/10.5594/J04027
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R. C. Brainard and A. N. Netravali; Digital Television at 45 Mbits/Sec, SMPTE Journal ( Volume: 96, Issue: 1, January 1987); SMPTE, 1987. Available at https://doi.org/10.5594/J04027
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<span class="citation">R. C. Brainard and A. N. Netravali; <cite>Digital Television at 45 Mbits/Sec</cite>, SMPTE Journal ( Volume: 96, Issue: 1, January 1987); SMPTE, 1987. Available at <a href="https://doi.org/10.5594/J04027" target="_blank" rel="noopener">https://doi.org/10.5594/J04027</a></span>
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R. C. Brainard and A. N. Netravali; Digital Television at 45 Mbits/Sec, SMPTE Journal ( Volume: 96, Issue: 1, January 1987); SMPTE, 1987
doi: 10.5594/J04027
url: https://doi.org/10.5594/J04027
doi: 10.5594/J04027
url: https://doi.org/10.5594/J04027
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<li> R. C. Brainard and A. N. Netravali; <cite id="bib-10-5594-j04027">Digital Television at 45 Mbits/Sec</cite>, SMPTE Journal ( Volume: 96, Issue: 1, January 1987); SMPTE, 1987 <span class="doi">10.5594/J04027</span> </li>