Abstract: The invention relates to the field of transmitting series of data between electronic circuits, and more specifically a method and a system for transmitting series of data, from a first electronic circuit to at least one second electronic circuit, via an electrical connection line between the first circuit and the second circuit, in reference to a ground line common to the circuits, of at least one series of data pulses. Each data pulse makes it possible to both electrically supply the second circuit and to transmit an item of data which can be interpreted by the second circuit. The supplying of the second circuit by the first circuit is cut between two successive pulses. For each data pulse and before the second circuit is switched off, because of failure in supply, the item of data transmitted by the pulse is stored on a non-volatile memory support of the second circuit.

Abstract: A device comprising a physical support and an electronic chip supported by the support and comprising a memory module and a processor configured to implement a computer program configured to produce a result from data. The device further comprises a display module configured to display the result and a radio antenna configured to receive at least one electromagnetic signal configured to electrically supply the display module. The data comprises at least one item of static data, stored in a non-transient memory and an item of dynamic data, circulating in a transient memory. The dynamic data is received by the device through the at least one electromagnetic signal and the at least one electromagnetic signal is received by the device from at least one communication device.

Abstract: The invention relates to the field of transmitting series of data between electronic circuits, and more specifically a method and a system for transmitting series of data, from a first electronic circuit to at least one second electronic circuit, via an electrical connection line between the first circuit and the second circuit, in reference to a ground line common to the circuits, of at least one series of data pulses. Each data pulse makes it possible to both electrically supply the second circuit and to transmit an item of data which can be interpreted by the second circuit. The supplying of the second circuit by the first circuit is cut between two successive pulses. For each data pulse and before the second circuit is switched off, because of failure in supply, the item of data transmitted by the pulse is stored on a non-volatile memory support of the second circuit.

Abstract: A device comprising a physical support and an electronic chip supported by the support and comprising a memory module and a processor configured to implement a computer program configured to produce a result from data. The device further comprises a display module configured to display the result and a radio antenna configured to receive at least one electromagnetic signal configured to electrically supply the display module. The data comprises at least one item of static data, stored in a non-transient memory and an item of dynamic data, circulating in a transient memory. The dynamic data is received by the device through the at least one electromagnetic signal and the at least one electromagnetic signal is received by the device from at least one communication device.

Abstract: A closure strip for a bag. Two supporting webs are provided, on their internal surfaces facing each other and at a distance from their longitudinal edges, with at least one longitudinal closure assembly. Each web has an upper portion, extending longitudinally in an upper portion thereof, and a lower portion, extending longitudinally in a lower portion of these. At least one of the webs includes internal faces which correspond to the faces of the upper and lower portions made in materials having different melting temperatures. The melting temperature of the material of the upper portion is less than the melting temperature of the material of the lower portion. The closure strip also includes a line of weakening which extends longitudinally in an intermediate area of each web. The intermediate areas are made of a third material having a lower tensile strength than the upper and lower portions.

Abstract: The invention relates to closure strip for a bag, comprising two supporting webs provided on their internal surfaces facing each other and at a distance from their longitudinal edges, with at least one longitudinal closure assembly, each supporting web comprising two portions, a first of said portions, a so-called upper portion, extending longitudinally in an upper portion of the supporting web, and a second portion, a so-called lower portion, extending longitudinally in a lower portion of the supporting web, wherein, for at least one of the webs, the faces of the upper and lower portions which are facing each other, so-called internal faces, are made in materials having different melting temperatures, the melting temperature of the constitutive material of the internal face of the upper portion being inferior to the melting temperature of the constitutive material of the internal face of the lower portion.

Abstract: A method for modification of data in a card transaction system having a memory card and a reader for reading the card. The card has a first memory (RAM) and a second memory (EEPROM) with data locations occupied by data recordings. Each transaction involves the modification of at least one of the data locations or the addition of a new recording. The method reads the address of a free location from a previous control register located in a first fixed location in the EEPROM memory, writes the new modified recording or addition in the free location, repeat the steps for each new recording to be modified or added, and writes in a second fixed location in the EEPROM memory a new control register containing the addresses of free locations within the EEPROM memory to use in the next transaction.

Abstract: The present invention relates to an integrated circuit device containing a memory area, which comprises, on the one hand, a data memory and a program memory, and on the other hand, a program having N code blocks Bi (i=1, . . . , N). It also relates to a method for making such a device secure. The present invention is characterized in that the memory area has M replicas Cj (j=1, . . . , M) of x program code blocks Bi (x=1, . . . , N), which replicas reside at different addresses in said memory area, and in that said device has selection means for randomly selecting one replica Cj of at least one of the x blocks Bi, as a block replica to be used when executing said program. In particular, the present invention can be applied to smart cards.

Abstract: Electronic purse payment system in the form of a smart card in which payment of a purchase in a shop is performed by a payment terminal (20), by deducting the purchase amount from the amount in purse memory, the payment terminal being connected to a bank system including an authorization center (22), an acquisition system (24) for collecting all transactions made using the payment terminal and a centralized compensation system (26). The system includes an electronic till (14) located where the transaction occurs including at least a reading/writing device (40), a microprocessor (36), a memory (38) and a security application module (42) for giving authorization to perform the transaction, the purse memory being increased equal to the purchase amount when the purse memory is read by the reading/writing device so that management of a transaction made at the shop is achieved at the transaction location.

Abstract: A method for modification of data in a card transaction system having a memory card and a reader for reading the card. The card has a first memory (RAM) and a second memory (EEPROM) with data locations occupied by data recordings. Each transaction involves the modification of at least one of the data locations or the addition of a new recording. The method reads the address of a free location from a previous control register located in a first fixed location in the EEPROM memory, writes the new modified recording or addition in the free location, repeat the steps for each new recording to be modified or added, and writes in a second fixed location in the EEPROM memory a new control register containing the addresses of free locations within the EEPROM memory to use in the next transaction.

Abstract: Electronic purse payment system in the form of a smart card in which payment of a purchase in a shop is performed by a payment terminal (20), by deducting the purchase amount from the amount in purse memory, the payment terminal being connected to a bank system including an authorization center (22), an acquisition system (24) for collecting all transactions made using the payment terminal and a centralized compensation system (26). The system includes an electronic till (14) located where the transaction occurs including at least a reading/writing device (40), a microprocessor (36), a memory (38) and a security application module (42) for giving authorization to perform the transaction, the purse memory being increased equal to the purchase amount when the purse memory is read by the reading/writing device so that management of a transaction made at the shop is achieved at the transaction location.

Abstract: A method of managing integrity defects concerning data written in a rewritable memory of an electronic component, said electronic component being suitable for performing operations that are capable of modifying at least some of said data and of interchanging information relating to said operations either off-line, directly with a terminal, or else on-line, with an issuer via said terminal.