Patents by Inventor Joao Paulo Zuna Bello

Joao Paulo Zuna Bello has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Two phase low energy signal processing using charge transfer capacitance
    Patent number: 5923204
    Abstract: A charge transfer from signal voltage (U.sub.S) to integrating capacitance (C.sub.O) is accomplished by means of charge transfer capacitance (C.sub.i), an active element (T) and controllable switches (S.sub.61, S.sub.62, S.sub.63, S.sub.64). The operation of the circuit is additionally based on the fact that the charge transfer to the charge transfer capacitance (C.sub.i) is terminated when the transistor (T) is in a current-carrying state and that current flow is ensured by a constant-current element set. These features are combined preferably in such a way that the breaking current of charge transfer is equally great as previously said current of the constant-current element.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: July 13, 1999
    Assignee: Nokia Mobile Phones Limited
    Inventors: Juha Rapeli, Jose De Albuquerque Epifanio Da Franca, Carlos Mexia De Almeida De Azeredo Leme, Joao Paulo Zuna Bello, Pedro Antonio De Sousa Cardoso Lopes, Ricardo Dos Santos Reis