Description of nontime-buffered Improved-Gray-Scale PCM compression system, which was evaluated by scanning slides, digitizing resultant video signal to six-bit accuracy, processing digitized signal, converting it to analog form, and displaying it for photographic reproduction; evaluation of Coarse-Fine PCM system (nontime-buffered) indicates possible two-to-one saving with no degradation; systems using time buffering techniques offer bandwidth reductions of as much as four-to-one, and hybrid systems using nontime and time-buffered techniques offer compressions up to six-to-one with possibilities of approaching ten-to-one for average complexity pictures.
Digital TV bandwidth reduction techniques as applied to spacecraft television
J Spacecraft Rockets
Journal of Spacecraft and Rockets ; 3 , n 5 ; p 667-673
1966
7 pages
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
NTRS | 1970