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254 results about "Master system" patented technology

The Sega Master System (SMS) is a third-generation 8-bit home video game console manufactured by Sega.It was originally a remodeled export version of the Sega Mark III, the third iteration of the SG-1000 series of consoles, which was released in Japan in 1985 and featured enhanced graphical capabilities over its predecessors. The Master System launched in North America in 1986, followed by ...

Method for managing dispersed keys based on identities in wireless sensor network

The invention discloses a method for managing dispersed keys based on identities I a wireless sensor network, which comprises the following steps: 1, initializing system parameters, and setting the parameters to obtain master keys and master key pairs of the system parameters and a system; 2, performing two-way authentication on nodes in the system, and after the master keys are adduced by the system and when a node i applies for an encrypted key, acquiring the encrypted key from a node mastering system secret shares, and verifying the validity of the node i first; and 3, setting a key service life to realize the updating of communication group keys, and defining that the node i has a system secret share of sjt' at the beginning of a time period t, and has the system secret share of sjt after the updating. In the process of establishing communication keys, the method adopts a signature two-way authentication process to verify the validity of the node i first, namely to verify whether the node i is a legal node of the network so as to prevent malicious nodes from being added in; besides, for a secrete share sent by a response node j, the node i is also required to verify a signature and detect the validity so as to realize the two-way authentication and effectively improve the security.
Owner:SHANGHAI UNIV

Profile based advertising method for out-of-line advertising delivery

InactiveUS20090006187A1Full visibilityFull controlAdvertisementsUser devicePrivacy protection
A system and method of delivering and accessing information including advertisements targeted to a user that assures the privacy protection of the user, and allows the user to access the advertisements without interrupting the flow of desired information content. The system includes at least one computerized user device and at least one ad matching entity communicably coupled to at least one network. The ad matching entity includes a master computer system and at least one computer sub-system, in which each sub-system is associated with a respective user device. The user device creates a user profile based upon data obtained from observing various user actions, including the consumption/abandonment of content programs or advertisements, the visiting of web pages, the use of web search terms, etc. The user profile data is provided by the user device to the sub-system of the ad matching entity, which is a trusted third party. The ad matching sub-system locally matches information contained in the user profile against information contained in a target profile, and sends the results to the master system. Based on these results, the master system transmits at least one advertisement targeted to the user to the user device. The ad matching entity then permanently deletes all records and copies of the user profile from its data storage. At a later time chosen by the user, the user can consume the advertisement in an out-of-line fashion independently of the consumption of any desired information content.
Owner:MARCUVITZ ANDREW

Self-adaptive device and method for analyzing global power flow of generation, transmission and distribution

The invention provides a self-adaptive device and a method for analyzing global power flow of generation, transmission and distribution, which belongs to the technical field of power transmission and distribution of power systems. The device comprises an upper computer and a lower computer, wherein the lower computer comprises a power-flow feedback module; a global power system is divided into a master system and a slave system; according to the characteristics of each part of the power system, the master system adopts a Newton-Raphson power-flow analysis method, while the slave system adopts a forward-backward substitution power-flow analysis method; and the master system and the slave system are organically linked together through master-slave-system association nodes in the middle. The invention has the advantages that the device adopts the power-flow feedback module, uses slave-system node-voltage signals obtained from last power-flow calculation of the slave system for next power-flow calculation of the slave system, and realizes the optimization of the prior forward-backward substitution algorithms, and as the method adopts the forward-backward substitution method which reduces iterations compared with the prior forward-backward substitution method, the device for analyzing global power flow not only guarantees accurate power-flow analysis, but also raises convergence rate and saves storage space.
Owner:NORTHEASTERN UNIV

Communication protocol

One aspect relates to a communication protocol for communicating between one or more entities, such as devices, hosts or any other system capable of communicating over a network. Another aspect relates to a system architecture that permits more than one slave system (e.g., a slave device) to be connected to a master system (e.g., a master device) in a communication system implementing a master/slave protocol. In one aspect, a pass-through device is provided that facilitates communication and authentication to one or more downstream slave devices. Yet another aspect relates to a star-based configuration of slave devices coupled to the master, and protocols for communicating and authenticating slave devices. Another aspect relates to a protocol that allows communication between entities without a priori knowledge of the communication protocol. In such a protocol, for example, information describing a data structure of the communication protocol is transferred between communicating entities. Further, an authentication protocol is provided for providing bidirectional authentication between communicating entities. In one specific example, the entities include a master device and a slave device coupled by a serial link. In another specific example, the communication protocol may be used for performing unbalanced transmission between communicating entities.
Owner:SCHNEIDER ELECTRIC IT CORP
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