Directional Correlation--A Technique to Reduce Bandwidth in PCM Television Transmissions
- 1 April 1967
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Communication Technology
- Vol. 15 (2) , 204-208
- https://doi.org/10.1109/tcom.1967.1089578
Abstract
Utilizing the new tool of frame storage of PCM encoded television pictures, a new technique for reducing the bandwidth requirements for transmission is described. The method involves the use of the high directional correlation inherent in picture point samples of the same frame, as well as frame to frame correlation. Using the procedures developed in the paper, a block diagram of a transmitter and receiver utilizing such a principle is illustrated and discussed. It is also shown how this technique improves on that of both simple and modified differential PCM encoding for television transmission.Keywords
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