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2862 results about "Transformation unit" patented technology

System and Managing method for cluster-type storage

A system and managing method for cluster-type storage is provided. In one example of the system, the storage system is configured so as to expand from small to large configurations at a reasonable cost with performance decided appropriately to the target system scale. The storage system has an interface with a server or hard drives, a plurality of protocol transformation units, each used for transforming a read or write protocol of the data to be exchanged with the server or hard drives and a plurality of data caching control units, each having a cache memory unit for storing data to be read from or written in the server or hard drives and a function for controlling the cache memory unit. An interconnection is used for the connection between the plurality of the protocol transformation units and the plurality of the data caching control units. In the storage system, the plurality of the data caching control units are divided into a plurality of control clusters while the cache memory unit is controlled only in its corresponding control cluster independently while the system management unit is connected to the interconnection, so that the system management unit manages the plurality of protocol transformation units and so that the plurality of control clusters are managed integrally as one system.
Owner:HITACHI LTD

Tamper resistant module having separate control of issuance and content delivery

Methods, apparati, and computer-readable media for securely loading a software module over a communications network from a software provider (SP) (101) onto a tamper resistant module (TRM) (103). A method embodiment of the present invention comprises: the SP (101) encrypting, using at least one transport key, at least one portion of the software module, each portion having an indication of location of the portion; the SP (101) encrypting each transport key and each indication using an asymmetric TRM public key, thereby forming a key transformation unit (KTU) (207), the TRM public key (150) having a corresponding TRM private key (190), the TRM public key (150) and corresponding TRM private key (190) being certified by a first certification authority (CA-1) (109); the SP (101) digitally signing the encrypted portion(s) with at least one asymmetric SP private key, each said SP private key having a corresponding SP public key, to produce a signed software module, each SP public key being certified by a second certification authority (CA-2) (119), CA2 (119) being different than CA-1 (109); and the SP (101) transmitting the portion(s), the KTU (207), and the signed software module to the TRM (103) over the communications network; and the TRM (103) recovering the transport key(s) and the indication(s) by decrypting the KTU (207) using the TRM private key (190); the TRM identifying the portion(s) using the recovered indication(s), verifying the certified SP public key using the public key of CA-2, authenticating the portion(s) using the certified SP public key; and decrypting the portion(s) using the recovered transport key(s).
Owner:MULTOS

Data buffer of high-speed data exchange interface and data buffer control method thereof

The invention discloses a data buffer of a high-speed data exchange interface and a data buffer control method thereof. The data buffer comprises a data storage unit, a buffer read-write control unit,a state register and a bit width conversion unit, wherein the data storage unit is used for buffering data among asynchronous clock zones; the buffer read-write control unit is used for controlling the read and write operations of the data buffer unit; the state register is used for controlling the exchange with the buffer read-write control unit and the state information; and the bit width conversion unit is used for carrying out bit width conversion when the bit width of the data storage unit and the bit width of a bus are different. The data buffer control process is achieved as follows: transmitting a read-write instruction to the buffer read-write control unit by a pack processing engine in a mode of facing to a unit; saving the storage state of the buffer by a transmitting mark state register; controlling the data transmission by buffer data; and realizing ordered data transmission by a self-increasing pointer. The invention has the advantages of strong control flexibility and high data transmission efficiency, and is used for multiport high-speed data exchange of a network processor and data link layer equipment.
Owner:XIDIAN UNIV
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