The improved gray scale and the coarse-fine PCM systems, two new digital TV bandwidth reduction techniques

Proceedings of the IEEEPublished 1 March 1966

W.T. Bisignani, G.P. Richards, JAMES W. WHELAN

DOI10.1109/proc.1966.4699

Source URL

Citations13

SJR quartileQ1

SJR score6.25

SNIP11.38

TL;DR

Two new digital television bandwidth-reduction techniques are presented with experimental results, each providing twice the efficiency of a conventional pulse code modulation (PCM) system with similar picture fidelity, and each is simple and feasible for present-day spacecraft Implementation.

Abstract

Two new digital television bandwidth-reduction techniques are presented with experimental results. Each provides twice the efficiency of a conventional pulse code modulation (PCM) system with similar picture fidelity, and each is simple and feasible for present-day spacecraft Implementation. The Improved Gray Scale PCM system effectively eliminates, by an averaging process, the gray scale contouring effect encountered in low-bit digital TV systems. The Coarse-Fine PCM system is somewhat more complex, but provides a higher fidelity reproduction of the original picture. The basic principles of operation of these two new data-compression techniques are given along with comparative pictorial results.

Keywords

Computer ScienceEngineering

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