摘要:
A method of using a liquid crystal composition in a bistable liquid crystal device having a weak zenithal anchoring comprising at least 40% by weight of compounds with strong molecular polarisability and strong dipole moment.
摘要:
A method of using a liquid crystal composition in a bistable liquid crystal device having a weak zenithal anchoring comprising at least 40% by weight of compounds with strong molecular polarisability and strong dipole moment.
摘要:
The present invention relates to a method of addressing a bistable matrix screen, in which the following two steps are reiterated:A. a disturbance signal is applied to each pixel of a marking area for a time t1, said disturbance signal being higher than a threshold signal such that each pixel of the area leaves its initial stable state, said disturbance signal being lower than a switching signal such that each pixel of the area having one of the stable states as its initial state does not switch into the other stable state, each pixel of the area then being in an intermediate disturbed state that is intermediate between the two stable states, and thenB. no signal is applied to each pixel of the area for a time t2 to allow each pixel of the area to return to its initial stable state.
摘要:
The invention relates to a bistable nematic liquid crystal matricial display device wherein the shift to one of the at least two bistable states is carried out by displacing the liquid crystal parallel to the surfaces of the device, characterized by the fact that it comprises a system for addressing various elements of the display device, characterized in that it comprises a system for addressing the various elements of the display device such that it does not simultaneously shift two adjacent elements located in the direction in which the material flows. The invention also relates to a display method. The invention makes it possible to control the grey level by controlling the scan rings of the hydrodynamic flow in order to define the border between two different textures.
摘要:
The aim of this invention is to provide a method to allocate resources on a security module of a portable apparatus such as a telephone, taking into account the security imperatives of the different intervening parties, such as the operator and application suppliers. This aim is achieved by a resource allocation method of a security module of an apparatus connected to a network, this network being administrated by an operator, said resources being used by the application suppliers, this method comprising the following steps: generation of a pair of asymmetric keys and storage of the private key in the security module, the public key being stored by the operator, introduction of at least one public key of the operator in the security module, reception by the operator of a request from a supplier, this request comprising at least the public key of the supplier, transmission by the operator of a resource reservation instruction to the security module together with the public key of the supplier, transmission by the operator of the security module's public key to the supplier, establishment of a secure communication channel between the supplier and the security module.
摘要:
A method for addressing a bistable nematic matrix LCD having two stable textures without any applied electric field. Pixel addressing is of the passive multiplex type. The method includes selecting the value of the electrical voltage applied between the substrates so that an average value of the voltage, preferably the average quadratic value, since the initial command for image display up to the time immediately preceding switching, has a predetermined value independent of the information to be displayed, which is the same for all the pixels of the image.
摘要:
The aim of this invention is to assure the portability of an electronic certificate and the security of the private key which are part of the certificate X509. In fact, it is important that this certificate is not used for purposes uncontrolled by the holder, such as identity usurpation, the authorization of non-desired transactions or the reproduction of transactions (replay). This aim is reached by a storage and transporting method for an electronic certificate, said certificate having an authority section for the issuing authority, a holder section for the holder of the certificate and a signature section determined by the issuing authority, characterized in that all or part of the holder section is contained in a removable security module and that at least the authority section is contained in a host computer.
摘要:
The aim of this invention is the use of a mobile telephone or mobile equipment for localized interactive functionalities and to demonstrate to a local device that a certain individual is indeed the holder of a given telephone number. This problem is resolved thanks to a matching method between an item of mobile equipment comprising the data relating to its identification and a personal object of identification disposing of at least a unique number, this method being carried out by a matching terminal and comprising the following stages: reading of the unique number of the personal object by a reader of the matching terminal, initialization of a first communication between the mobile equipment and the matching server, transmission of a unique code by the matching terminal to the mobile equipment, transmission of this unique code by the mobile equipment towards a matching server, detection and storage of the data relating to the identification of the mobile equipment by the matching server, transmission of the unique code and of the unique number to the matching server by the terminal, association of the unique number of the personal object with the data relating to the identification of the mobile equipment.