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    METHOD FOR MANAGING ELECTRONIC CIRCUIT
    1.
    发明专利
    METHOD FOR MANAGING ELECTRONIC CIRCUIT 失效

    公开(公告)号：JP2000227951A

    公开(公告)日：2000-08-15

    申请号：JP32035199

    申请日：1999-11-10

    Applicant: ST MICROELECTRONICS SA

    Inventor： GAULTIER JEAN-MARIE

    IPC: G06K19/07 ,  G06K7/00

    Abstract: PROBLEM TO BE SOLVED: To increase the number of command functions without increasing the number of commands by varying the method of interpretation when a new command is transmitted before the termination of dead time of a prescribed length, which exists between the same transmitted commands. SOLUTION: When a card receives a new command before the termination of dead time T0 after the reception of a command C, the command transmitted by a word 101 is assumed to be the command C transmitted by a word 100 if a reader transmits the command word 100 and it transmits the new command word 101 before the lapse of time T0. When dead time T0 has passed after the word 101, the charge of an antenna is modulated during time T1 after the termination of time T0 and therefore the reader can be synchronized with the card. Phase displacement after time T1 is transmitted by constituting the state bit of the data word 201. Since the sequence has only a role for making the value of an address counter to a value previous to a value becoming an object by one, it is transmitted at a high speed.

    IMPROVEMENT OF CARD IDENTIFYING METHOD
    2.
    发明专利
    IMPROVEMENT OF CARD IDENTIFYING METHOD 失效

    公开(公告)号：JP2000148931A

    公开(公告)日：2000-05-30

    申请号：JP31042199

    申请日：1999-10-29

    Applicant: ST MICROELECTRONICS SA

    Inventor： GAULTIER JEAN-MARIE

    IPC: G06K17/00 ,  G06K7/00

    Abstract: PROBLEM TO BE SOLVED: To obtain an identification method that has a form in which a calling unit transmits at least two different types of markers, i.e., a 1st type of a marker deciding the start of a time slot in a sequence and a 2nd type of a marker making a card be in a prescribed state after a calling message and they are received and interpreted by the card. SOLUTION: This improvement is about a process for identifying an electronic card existing in an identification area, a card responds to a calling message (CALL) transmitted by a calling unit by transmitting a response message (R0) determined by a specific time slot (W0) in the sequence of time slots, the calling unit transmits at least two different types of markers (M1 and M2) after the calling message (CALL), they are received and interpreted by the card, the 1st type of a marker (M1) decides the start of a time slot in the sequence and the 2nd type of a marker (M2) makes the card be in a prescribed state. It is possible to interrupt the card identification procedures before the sequence is finished by this method.

    3.
    发明专利
    未知

    公开(公告)号：DE69929764D1

    公开(公告)日：2006-04-20

    申请号：DE69929764

    申请日：1999-03-15

    Applicant: ST MICROELECTRONICS SA

    Inventor： GAULTIER JEAN-MARIE

    IPC: G06K7/00 ,  G06K7/08 ,  G06K7/10

    Abstract: The system uses an arborescent iterative procedure to identify the card numbers. The system provides a means for identification of electronic cards which are presented in an investigation zone. Each card has attributed to it an identification number on a one-to-one basis. The method includes reconstituting the identification numbers according to an iterative arborescent algorithm comprising a number of stages (1-12). These include the transmission of an interrogation message (GC, PC(k)) with a destination of certain of the cards present, and the transmission by the cards of a response message comprising a variable number (VN1) whose value depends on the identification number of the card. This response is interpreted, taking account of the row (i) at which a collision is produced between the bits of the variable received number, allowing progressive reconstitution of the bits not identified within the identification number of the card.

    6.
    发明专利
    未知

    公开(公告)号：DE69512456T2

    公开(公告)日：2000-01-20

    申请号：DE69512456

    申请日：1995-04-06

    Applicant: ST MICROELECTRONICS SA

    Inventor： COSTABELLO CLAUDE ,  GAULTIER JEAN-MARIE

    IPC: G11C17/00 ,  G11C16/02 ,  G11C16/16 ,  G11C16/06

    Abstract: The method involves using a non-volatile memory (11) and address circuits (121-123). The non-volatile integrated circuit memory is divided into N sectors (S0- S31), the sectors being separately addressable by address circuits (123). The N sectors are arranged into m groups of n sectors each, the cells of each sector being selectable by other address circuits (121,122). An erasure pulse is applied simultaneously to all the sectors, or to the sectors of a group. The erasure of each sector is then verified. Repeated erasure pulses are applied, until all the sectors, or all the sectors of the group pass the verification test. Sectors are locked as it is detected that they have been successfully erased, so that in each cycle the number of sectors to be erased is reduced.

    10.
    发明专利
    未知

    公开(公告)号：DE69933421D1

    公开(公告)日：2006-11-16

    申请号：DE69933421

    申请日：1999-10-29

    Applicant: ST MICROELECTRONICS SA

    Inventor： GAULTIER JEAN-MARIE

    IPC: G06K7/00 ,  G06K17/00

    Abstract: The electronic cards respond to an interrogation signal (CALL) by emitting a response signal within a time slot (W0). After the interrogation signal the interrogation unit emits markers (M1, M2) of different types which are received and interpreted by the cards. Markers of the first type indicate the start of the time slot to the card, and of the second type cause the card to change state.

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