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    11.
    发明专利
    未知

    公开(公告)号：DE60230126D1

    公开(公告)日：2009-01-15

    申请号：DE60230126

    申请日：2002-06-20

    Applicant: ST MICROELECTRONICS SRL

    Inventor： OCCHIPINTI LUIGI ,  BUONOCORE FRANCESCO ,  VINCIGUERRA VINCENZO ,  RIZZOTTO GIANGUIDO

    IPC: G11C13/02 ,  G06N3/00 ,  G06N3/12 ,  H01L27/28 ,  H01L51/00 ,  H01L51/30

    Abstract: Described herein are a molecular memory obtained using DNA strand molecular switches and carbon nanotubes, and a manufacturing method thereof. In particular, the nonvolatile memory is manufactured according to an architecture that envisages the use of carbon nanotubes as electrical connectors and DNA strands as physical means on which to write the information. In other words, the nonvolatile memory is made by means of a set of molecular DNA strand switches, the addressing of which is controlled by molecular wires made up of carbon nanotubes.

    12.
    发明专利
    未知

    公开(公告)号：DE60107529D1

    公开(公告)日：2005-01-05

    申请号：DE60107529

    申请日：2001-01-12

    Applicant: ST MICROELECTRONICS SRL

    Inventor： OCCHIPINTI LUIGI ,  FORTUNA LUIGI ,  RIZZO ALESSANDRO ,  FRASCA MATTIA

    IPC: H04L27/00

    Abstract: A chaotic-signal generator comprises a set of elements (1 to 4) for generating signals, which are connected together according to a scheme of chaotic dynamics of signal generation. The connection scheme may advantageously correspond to the circuit generally referred to as Chua's circuit, in particular in its possible implementation as a cellular neural network (CNN). Interposed in the aforementioned connection scheme is at least one switch (5), such as a MOS transistor, the opening and closing of which causes the variation in the chaotic dynamics of signal generation. The opening and closing command signal (u(t)) applied to the aforesaid switch (5) may therefore be made to correspond to a modulating signal in view of transmission on a channel, such as a high-noise channel. In a particularly preferred application, the aforementioned modulating signal is a binary signal, and the aforementioned opening and closing command signal is constituted by a switching signal, the switching frequency of which is caused respectively to increase or decrease depending on the logic level assumed by the modulating signal.

    13.
    发明专利
    未知

    公开(公告)号：DE69810625T2

    公开(公告)日：2003-11-27

    申请号：DE69810625

    申请日：1998-10-07

    Applicant: ST MICROELECTRONICS SRL

    Inventor： LIONETTO ANTONIO ,  OCCHIPINTI LUIGI ,  SPAMPINATO SERGIO TOMMASO ,  CAPONETTO RICCARDO

    IPC: H02M3/28 ,  H02M1/00 ,  H02M1/36 ,  H02M3/335

    Abstract: A method of controlling a flyback DC-DC converter, self-oscillating at steady state conditions, employing a transformer for storing and transferring energy to a load and having an auxiliary winding whose voltage, induced by the current flowing in the secondary winding of the transformer, is monitored to regulate the amount of energy being transferred by way of a primary control loop disabling and enabling the turning on of a power switch driving the primary winding of the transformer and to detect its the zero-crossing and consequently turn on the power switch for a new conduction and energy storage phase, the duration (TON) of which is established by a secondary control loop of the output voltage producing the turning off of the power switch for a new off phase (TOFF), and comprising a fixed frequency oscillator of a frequency lower than the self-oscillating frequency of the converter for start-up charge transient of an output filter capacitor, wherein the power transferred from the primary circuit to the secondary circuit of the flyback transformer is controlled by introducing a delay on the turn-on instant of the power switch in respect to a turn-on command generated, during a self-oscillating functioning phase upon sensing a zero crossing event and during a fixed frequency functioning phase, upon a rising front of the signal generated by said oscillator, in function of input variables of the enabling-disabling primary control loop and of the secondary control loop, regardless of the mode of control.

    18.
    发明专利
    未知

    公开(公告)号：DE69832038D1

    公开(公告)日：2005-12-01

    申请号：DE69832038

    申请日：1998-03-06

    Applicant: ST MICROELECTRONICS SRL

    Inventor： OCCHIPINTI LUIGI ,  DI BERNARDO GIOVANNI ,  DI COLA EUSEBIO ,  CAPONETTO RICCARDO

    IPC: G09C1/00 ,  H04L9/00 ,  H04L9/26 ,  H04L9/32 ,  G01N30/00

    Abstract: The method for authentication and electronic signature is of the private-key, challenge and response type between a user requesting an authorisation (for a specific transaction, or for access to particular resources), via, for example, a smart card (1) and a controller -check terminal (2)-supplying the authorisation. To increase security of the authorisation or authentication operations, the smart card (1) comprises a chaotic generator (23) generating user's acknowledgement code, which is compared with a comparison code generated by the check terminal (2) using a chaotic generator (30) which is the same.

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