VERFAHREN UND VORRICHTUNG ZUR BITMENGENSCHÄTZUNG FÜR EINEN KODIERER MIT VARIABLER KODEWORTLÄNGE

摘要

PCT No. PCT/FR94/00900 Sec. 371 Date May 16, 1996 Sec. 102(e) Date May 16, 1996 PCT Filed Jul. 19, 1994 PCT Pub. No. WO95/03673 PCT Pub. Date Feb. 2, 1995The invention is a process and apparatus for estimating a bit budget in a circuit for compressing digital data, especially digitized television signals. Signals represented by N-bit coded samples, are estimated based upon the probability of a bit of given order having a given value (0 or 1) out of M binary words representing M samples of the signal. An entropy calculation is performed on the basis of the probabilities corresponding to the N bits with the sum of all the entropies corresponding to the desired estimate.