Abstract: An electronic module (6) suitable for producing contactless cards (1) and/or contactless electronic labels, and comprising a carrier (10) for an electronic microcircuit (7) connectable to an antenna (2) to enable contactless operation of the module (6). The whole of the antenna (2) is arranged on the electronic module (6) and the turns lie in the plane of the carrier substrate (10). Said electronic module (6) is useful for producing contactless cards and electronic labels.

Abstract: Information collection system for card readers having a planar part (1) that can be plugged into a card reader and possesses an ISO type connector (10) for a serial transmission of information, a part (2) having a PCMCIA format connector (20) permitting a parallel transmission of information, and a part (3) having circuits making it possible to store the data received in serial form and retransmit it in parallel form on the PCMCIA connector.

Abstract: The device of the invention for a pay-television system comprises an emitter and several receivers using "smart cards". In addition to the unscrambling control signals, the emitter sends encrypted authentication messages to which a correct response can be given only by the receivers where valid cards are used.

Abstract: The system includes an electronic label (1) and a data terminal (6). The electronic label (1) is provided with a device for the emitting of electromagnetic waves (8) fixed to a ring (2) of the bottom of the protective bell (5). The data terminal (6) is coupled to a detachable read/write head (7) that can be inserted, as desired, into the bell (5) directly facing the label (1) bearing ring (2) to transmit information elements between the data terminal (6) and the label. The system may be used for the automatic identification of gas cylinder type articles.

Abstract: To counter illicit prevention of the invalidation of a smart card in a pay television network, for example when the period of validity for the card has expired, a verification of the card reader's ability to write to the card's memory is made. This verification consists in periodically sending a data item to be stored in the card. A counter on the card is reset by the writing voltage of the card's storage. In the event the writing voltage does not reach the counter, the counter's overflow output is connected to a read inhibition circuit which blocks functions of the card.

Abstract: According to the disclosed method, a reference line is caused to be transmitted during the non-visible part of the image, the transmissions are received with a calibrated receiver, this reference line is sampled, an error signal is produced from the difference between this line and its theoretical value, a correction coefficient is deduced therefrom for each of the samples of the line, and this correction coefficient is applied to the lines of the following frames.

Abstract: The method of the invention consists, during the transmission of composite video signals, in the inclusion therein of series of access messages (ECM1, ECM2) and, during the unscrambling, carried out using a chip card reader whose chip card comprises encoded digital data, in using an interactive method of identification of a digital signature.

Abstract: According to the disclosed method, decoys which are the reproduction of the corresponding interpolated sequence are inserted into the scrambled line, at the end of the first section and at the start of the second section.

Abstract: The process of the invention concerns pay television networks with reinforced scrambling. To attract potential subscribers, the invention consists in cyclically transmitting non-scrambled images for brief periods, so that the type of program can be seen.

Abstract: To allow teleshopping to be performed quickly and reliably via the television network, receivers (3) are equipped with smart card readers (4), and the transmitter (2) sends information which is processed in the smart cards by means of the viewers' control devices (6). The result of this process is displayed on the screen and communicated later to the transmitter. This result allows the viewers' reactions to be authenticated.

Abstract: To prevent a person having found or stolen a card of a pay-television subscriber from using it fraudulently, the identity of the subscriber is recorded in a zone protected from reading and writing. At the beginning of the period of use of a new card, the new card compares the identity of the new card with that of the old one, and delivers the password only if the two identities are the same.

Abstract: A control-lever for a game in which a movable object is displaceable by gravity to operate a detector. In one embodiment the movable element is a pendulum and in a second embodiment the element is a ball rolling in one or more channels. The ball can be a solid object or a ball of mercury.

Abstract: A swash plate pump of the type wherein a plurality of pistons bear against the swash plate and are given a reciprocating movement when the plate is rotated by a drive shaft. The drive shaft comprises a solid portion and a hollow portion which latter constitutes a central admission conduit for the liquid to be pumped. The swash plate is mounted at the junction between the solid and hollow portions of the shaft, and the plate has an aperture which communicates with the central conduit and a crescent-shaped port for liquid distribution to the pistons. These pistons are arranged in a circle concentric with the solid shaft portion. A taper roller bearing is mounted on the hollow shaft portion and the front face of the swash plate bears against the roller bearing. The discharge flow of liquid can be divided for distribution into several separate flows by a cylindrical sleeve located on the solid shaft portion.