Hitachi, Ltd.

Aritoki Takada

Tadashi Takeuchi

Yoshihiro Hayashi

Daisuke Yokota

Hiroshi Mine

Ken Nomura

Damien Le Moal

David Pinski

In some examples, a first computing device associated with a first blockchain node receives a transaction request along with related data for storage in an off-chain storage. The first blockchain node may send a communication to a second blockchain node to propose recording the transaction on the blockchain, which may result in the transaction being recorded in a new block on the blockchain as conditionally accepted pending validation of the related data. The first computing device may send the related data to a second computing device associated with the second blockchain node that performs validation. The first blockchain node receives, from the second blockchain node, a communication that proposes recording of the transaction on the blockchain as being validated. The first and second blockchain nodes may send one or more communications to cause addition of another new block to the blockchain indicating validity of the transaction.

Off-chain blockchain storage with validation

Example implementations described herein are directed to a consent management service system, which involves a system to record consent between a bank and its consumers and to share them to a third party audit servicer. The system ensures that the consent records are disclosed to individuals or organizations that are eligible to access the record without modification, and helps them detect and prevent malicious attempts by banker or consumer.

Consent management service system

A storage system includes: a controller including a plurality of processors; an interface device; and a plurality of queues associated with the interface device. The plurality of queues each store data transmitted from a processor allocated to the queue to the interface device. The plurality of queues include a private queue and a public queue. The private queue is a queue allocated with only a first processor as one of the plurality of processors, the private queue requiring no exclusion processing when data is stored, whereas the public queue is a queue allocated with two or more second processors in the plurality of processors, the public queue requiring the exclusion processing when data is stored.

Systems and methods for managing public and private queues for a storage system

A computer includes a first memory, a second memory having an I/O speed lower than an I/O speed of the first memory, a storage device, and a processor. The first memory has a work area and a first cache area where data input to and output from the storage device is temporarily stored and the second memory has a second cache area where the data input to and output from the storage device is temporarily stored and a swap area to be a saving destination of data stored in the work area. The processor reduces the work area and expands the first cache area, when an input/output amount to be an amount of data input to and output from the storage device is larger than a predetermined input/output amount.

Computer and memory control method

A plurality of storage devices are coupled with at least two switch of a switch network that is configured by a plurality of switches that transfer a packet that complies with an IP (Internet Protocol). Moreover, a storage control device is coupled with the switch network. The storage control device builds an LU (Logical Unit) that is utilized by a host device based on at least two storage devices that are coupled with different switches.

Storage control device for storage system provided with storage device coupled to switch network

To provide technology that makes communication possible using an NAT device that does not correspond to protocol even when protocol that stores the IP address in the payload section to carry out communication is used. The technology consists of a CL deviceconnected to a global network, an SE deviceconnected to a private network, an NAT deviceand a auxiliary devicewherein the auxiliary deviceverifies in what way the address information of the packet communicated to the CL devicefrom the SE devicehas been converted and notifies the SE deviceof the address information after the address information has been converted in the NAT device

Communication system, auxiliary device and communication method

Provided are a stream distribution system and a failure detection method capable of easily identifying the cause of quality loss in stream distribution. This stream distribution system includes a first server for communicating with a client terminal via a router and sending stream data, and a second server configured as a redundant server of the first server and connected to the first server. The first server has a communication status notification unit for sending a connection management table concerning the communication with the client terminal to the second server. The second server has a packet recording unit for acquiring a mirror packet, which is a copy of a packet sent to the first server, from the router, and a network failure monitoring unit for detecting a failure in a network between the first server and the client terminal based on the connection management table and a packet buffer.

Growing community of inventors

Odawara, Japan

Aritoki Takada