Patents Assigned to Etat Francais Represente par le Ministere des Postes, des Telecommunication et de L'Espace (CNET)
  • Generalized digital multiplier and digital filter using said multiplier
    Patent number: 4974186
    Abstract: The multiplier according to the invention comprises N shift registers (RD.sub.O, . . . , RD.sub.N-1) containing the words x.sub.i on B bits, N conditional adders (AdC.sub.O, . . . , AdC.sub.N-1) each adding to the partial sum which they receive a constant coefficient (a.sub.1), conditional on the value of the bit (x.sub.i,j) which they receive from the associated register (RD.sub.1) and an adder accumulator (AdAc). The digital filter using such a multiplier also comprises a parallel word input register.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: November 27, 1990
    Assignee: Etat Francais Represente par le Ministere des Postes, des Telecommunication et de L'Espace (CNET)
    Inventors: Pierre Duhamel, Zhijian Mou, Michel Cand
  • Recursive adder for calculating the sum of two operands
    Patent number: 4942549
    Abstract: A recursive type adder for calculating the sum of two operands. It is used to calculate the sum of two binary data numbers using adders in the form of integrated circuits, particularly for information processing systems wherein the adders constitute one of the fundamental operations of data processing. The invention is classified in the category of parallel-parallel type adders.
    Type: Grant
    Filed: March 7, 1989
    Date of Patent: July 17, 1990
    Assignee: Etat Francais represente par le Ministere des Postes, des Telecommunications et de l'Espace (CNET)
    Inventors: Francis Jutand, Luc Montperrus