公开(公告)号：JP2000112352A

公开(公告)日：2000-04-21

申请号：JP5845099

申请日：1999-03-05

Applicant: ST MICROELECTRONICS SRL

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

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

Abstract: PROBLEM TO BE SOLVED: To obtain a method for authentication and electronic signature of an enquiry type and a response type which have an improved security level by making a step generating a chaotic signal included in a step generating authentication and electronic signature signals. SOLUTION: A check terminal 2 checks identification data including a PIN (personal identification number) with respect to a card 1. Thereafter, the terminal 2 generates a signal or initial data X0 via a random value generating circuit 17 and moreover generates development time P. The terminal 2 transmits the initial data X0 and the signal of the development time to both of the card 1 and the chaotic generator of its own. The card 1 transfers the data and the signal to the chaotic generator 23 of its own and moreover calculates an authentication code RES' based on a secret key K' stored in a position 24 to transmit it to the terminal 2. The terminal 2 calculates a comparision code RES by using the secret key K stored in a position 29 to compare the RES with the authentication code RES' of the card 1.

公开(公告)号：JP2002258903A

公开(公告)日：2002-09-13

申请号：JP2001396005

申请日：2001-12-27

Applicant: ST MICROELECTRONICS SRL

Inventor： ABBISSO SALVATORE ,  CAPONETTO RICCARDO ,  DIAMANTE OLGA ,  PORTO DOMENICO ,  DI COLA EUSEBIO ,  FORTUNA LUIGI

IPC: G06N3/00 ,  G05B11/42 ,  G05B13/02

Abstract: PROBLEM TO BE SOLVED: To provide a circuit adapted for realizing a non-integral order dynamic system. SOLUTION: In this circuit for realizing a non-integral order dynamic system including a neural network(1-5) adapted for generating at least one output signal(OS) by receiving at least one input signal(IS), the input signal and output signal are related with each other in a non-integral order differential/integral relation based on the coefficients of the neutral network (1-5). A plurality of circuits (I, II) for realizing a non-integral order (PI D ) controller are connected to each other, and a signal is generated by either an integrating block (200) or a differentiating block (202) included in those circuits, and the signal is supplied to the integrating block (200) or the differentiating block (202) of the other circuit in this system.

公开(公告)号：JP2000125561A

公开(公告)日：2000-04-28

申请号：JP28636299

申请日：1999-10-07

Applicant: ST MICROELECTRONICS SRL

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

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

Abstract: PROBLEM TO BE SOLVED: To prevent a burst mode function and, at the same time, to reduce overshooting by modulating the turning-off period of a power switch by using a combinatory function of operating parameters until a limit output voltage condition is reached when mode transition is made from a self-exciting oscillation mode to a fixed oscillator frequency mode. SOLUTION: A primary control loop controls the output voltage Vout of a flyback converter by controlling the voltage Vcs of the self-feeding power of a control circuit by means of an error amplifier Error Amp and a secondary control loop directly controls the output voltage Vout by optically coupling the amplifier Error Amp and control circuit to a Vcomp pin. Then the turning- off period of a power switch is continued until the energy stored in a transformer during the turning-on period of the power switch is completely transferred to an output circuit by operating a bistable circuit LATCH in accordance with the voltage Vcomp compensation capacitor Ccomp through a comparator Ccomp.

公开(公告)号：JP2001018623A

公开(公告)日：2001-01-23

申请号：JP2000189674

申请日：2000-06-23

Applicant: ST MICROELECTRONICS SRL

Inventor： RIZZOTTO GIANGUIDO ,  CAPONETTO RICCARDO ,  DIAMANTE OLGA

IPC: B60G17/015 ,  B60G17/018

Abstract: PROBLEM TO BE SOLVED: To provide an improved control system for semiactive suspension, for easily adaptable to the necessity and requirement of a user (a vehicle manufacture), and quickly responding to a specific operating condition. SOLUTION: A vehicle is equipped with at least one semiactive suspension 5 arranged between a vehicle body and a wheel, and having an attenuation coefficient variable by a method controlled by an actuator controlled by a control device 18. The device 18 is equipped with: an acceleration measuring sensor 15 for producing the acceleration signal of a vehicle, a potentiometer 16 for producing a suspension position signal, a signal adjusting unit 21 for operating vehicle and attenuation speeds, a fuzzy control unit 23 for operating the successive position of the actuator based on the vehicle and attenuation speeds, and a drive unit 21 for producing a control signal S1 for the actuator.

公开(公告)号：DE69930100D1

公开(公告)日：2006-04-27

申请号：DE69930100

申请日：1999-06-24

Applicant: ST MICROELECTRONICS SRL

Inventor： RIZZOTTO GIANGUIDO ,  CAPONETTO RICCARDO ,  DIAMANTE OLGA

IPC: B60G17/015 ,  B60G17/018

Abstract: A vehicle comprises at least one semiactive suspension (5) arranged between a vehicle body (2) and a wheel (4) and having a damping coefficient that can be varied in a controlled way by an actuator (14) governed by a control device (18). The control device comprises an accelerometric sensor (15) generating a vehicle body acceleration signal; a potentiometer (16) generating a suspension position signal; a signal conditioning unit (21) for the calculation of the vehicle body speed and the damping speed; a fuzzy control unit (23) which calculates the subsequent position of the actuator on the basis of the vehicle body speed and of the damping speed; and a driving unit (21) which generates a control signal (S1) for the actuator.

公开(公告)号：DE60118149T2

公开(公告)日：2007-04-19

申请号：DE60118149

申请日：2001-04-04

Applicant: ST MICROELECTRONICS SRL

Inventor： CAPONETTO RICCARDO ,  DIAMANTE OLGA ,  RISITANO ANTONIO ,  FARGIONE GIOVANNA ,  TRINGALI DOMENICO

IPC: B60G23/00 ,  B60G17/018

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.

公开(公告)号：DE60118149D1

公开(公告)日：2006-05-11

申请号：DE60118149

申请日：2001-04-04

Applicant: ST MICROELECTRONICS SRL

Inventor： CAPONETTO RICCARDO ,  DIAMANTE OLGA ,  RISITANO ANTONIO ,  FARGIONE GIOVANNA ,  TRINGALI DOMENICO

IPC: B60G17/015 ,  B60G17/018 ,  B60G23/00

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.

公开(公告)号：DE69930100T2

公开(公告)日：2006-10-26

申请号：DE69930100

申请日：1999-06-24

Applicant: ST MICROELECTRONICS SRL

Inventor： RIZZOTTO GIANGUIDO ,  CAPONETTO RICCARDO ,  DIAMANTE OLGA

IPC: B60G17/015 ,  B60G23/00 ,  B60G17/018 ,  B60G21/10

Abstract: A vehicle comprises at least one semiactive suspension (5) arranged between a vehicle body (2) and a wheel (4) and having a damping coefficient that can be varied in a controlled way by an actuator (14) governed by a control device (18). The control device comprises an accelerometric sensor (15) generating a vehicle body acceleration signal; a potentiometer (16) generating a suspension position signal; a signal conditioning unit (21) for the calculation of the vehicle body speed and the damping speed; a fuzzy control unit (23) which calculates the subsequent position of the actuator on the basis of the vehicle body speed and of the damping speed; and a driving unit (21) which generates a control signal (S1) for the actuator.