Patent ID: 7834782

Claim:
A device of the CABAC type for encoding an initial flow of binary digital information intended for generating an output flow in order to form video images after decoding, comprising: means capable of analyzing successive sequences of bits of the initial binary flow and of deducing for each bit, an interval representing the occurrence probability associated with this bit, the interval being defined by its size (CIR) and its lower boundary (CIL), means capable of analyzing this interval and of providing, if necessary, renormalization of the latter, characterized in that the means capable of providing this renormalization include: a reference table (T 1 ) containing, for each possible value of said lower boundary (CIL) and of said size (CIR), sequences of bits to be inserted into the output flow, and the number (BOI) of unknown bits which are waiting to be inserted for this specific renormalization step, means capable of determining the address in this reference table (T 1 ), of said data and this by concatenation of the initial values of the size (CIR) of said interval and of its lower boundary (CIL) in order to notably extract therefrom a sequence of bits to be inserted.