Abstract: A signal processing method and apparatus, and a communication system, and relates to the field of communication technologies. The method includes: a processing unit of a first device first determines a distortion parameter of an eye pattern of a first PAM-N signal transmitted by a transmitting unit in the first device, then performs anti-distortion preprocessing on a second PAM-N signal using an equalizer based on the distortion parameter, to obtain a third PAM-N signal, and controls the transmitting unit to transmit the third PAM-N signal. The distortion parameter is for reflecting a tilt status of the eye pattern, and N?2. The equalizer is used to perform anti-distortion preprocessing on the second PAM-N signal to obtain the third PAM-N signal.

Abstract: Disclosed are a key management method and a key management apparatus, where the key management method includes: acquiring authorization of a user through a first identity authentication mode to generate a first authentication encryption key, where the first identity authentication mode is used for logging into a digital identity; and encrypting at least one character decryption key by using the first authentication encryption key to obtain at least one initially encrypted character decryption key corresponding to the first identity authentication mode, where the at least one character decryption key is in a one-to-one correspondence with at least one character of the digital identity and used to decrypt at least one encrypted target key to obtain at least one target key. In the technical solutions of the present application, an identity authentication mode can be associated with a target key, facilitating a management and use process of the target key.

Abstract: Disclosed are a key management method and a key management apparatus. The method includes: after confirming that a user logs into a digital identity through a first identity authentication mode, acquiring a first character decryption key corresponding to a first character in at least one character of the digital identity; and decrypting, based on the first character decryption key, an encrypted target key stored in the digital identity to obtain a target key, where the target key is used to manage an asset corresponding to the first character. Based on the technical solutions provided in the present application, a user can log into a digital identity through existing identity information and implement asset management without memorizing a cumbersome and complicated key, which provides great convenience for the user.

Abstract: The present application provides a method, a device and an apparatus for storing data, and a computer readable storage medium. The method includes: dividing the data into X data fragments for forming an array including m rows and n columns, each of the rows including at least one and at most n data fragments, and each of the columns including at least one and at most m data fragments; encoding at least one of the data fragments in the each of the rows using an error correction code encoding algorithm to obtain M row check fragments, and encoding at least one of the data fragments in the each of the columns using an error correction code encoding algorithm to obtain N column check fragments, wherein M?m, N?n; and storing the X data fragments, the M row check fragments and the N column check fragments.

Abstract: A method for data synchronization of multiple nodes includes: receiving, by a master node in at least one master node in the multiple nodes, a write operation submitted by an application program; packaging, by the master node, at least one data change log corresponding to the write operation into a block generated by the master node, and signing the block; broadcasting, by the master node, the block to other nodes in the multiple nodes after signing the block; reading, by at least one synchronous node in the multiple nodes, the at least one data change log in the block, and executing at least one data change operation corresponding to the at least one data change log in the block; and determining, by at least one node in the multiple nodes, an operation state of the block.

Abstract: The embodiments of the present invention relate to a storage system comprising: a storage network; at least two storage nodes, connected to the storage network; and at least one storage device, connected to the storage network, each storage device comprising at least one storage medium; wherein, the storage network is configured to enable each of the at least two storage nodes to access any of the at least one storage medium without passing through another storage node of the at least two storage nodes. According to the embodiments of the present invention, a storage system in which there is no need to physically migrate data when rebalancing is required is provided.

Abstract: A redundant storage system which can automatically recover RAID data by crossing different JBODs includes: at least one server, Non-Ethernet network including at least one Non-Ethernet switch, and at least two storage devices; each of the at least one server includes an interface card, and each of the at least one server is connected to the at least one Non-Ethernet switch through a Port of the interface card; each of the at least two storage devices is connected to the at least one Non-Ethernet switch through an Interface; each of the at least two storage devices includes at least one physical storage medium; physical storage mediums respectively included in different storage devices constitute a RAID group.

Abstract: The present invention provides apparatus and method for parallel polyphase image interpolation.

Abstract: The embodiments of the present invention provide a method and a device for transmitting data, which can improve the efficiency of data transmission greatly. The method for transmitting data is used in storage systems including shared storage pools, the method includes: receiving a data transmission request sent by an application program located at same physical server; storing the data to be transmitted in a shared storage pool of a storage system; and packaging the storage address of the data stored and sending the data package by a network protocol.

Abstract: The embodiments of the present invention relate to a storage system comprising: a storage network; at least two storage nodes, connected to the storage network; and at least one storage device, connected to the storage network, each storage device comprising at least one storage medium; wherein, the storage network is configured to enable each of the at least two storage nodes to access any of the at least one storage medium without passing through another storage node of the at least two storage nodes. According to the embodiments of the present invention, a storage system in which there is no need to physically migrate data when rebalancing is required is provided.

Abstract: The embodiments of the present invention relate to a storage system comprising: a storage network; at least two storage nodes, connected to the storage network; and at least one storage device, connected to the storage network, each storage device comprising at least one storage medium; wherein, the storage network is configured to enable each storage node to access all the storage mediums without passing through other storage nodes. According to the embodiments of the present invention, a storage system in which there is no need to physically move data when rebalancing is required is provided.

Abstract: An apparatus for parallel filtering, including a multi-granularity memory, a data cache device, a coefficient buffer broadcast device, a vector operation device and a command queue device. The multi-granularity memory is configured to store data to be filtered, filter coefficients and filtering result data. The data cache device is configured to cache, read and update the data to be filtered. The coefficient buffer broadcast device is configured to cache and broadcast the read filter coefficients. The command queue device is configured to store and output a queue of operation commands for the parallel filtering operation. The vector operation device is configured to perform a vector operation based on the data to be filtered and the output coefficient data, and write an operation result into the multi-granularity filtering result storage unit. A method is also provided.

Abstract: The present invention provides apparatus and method for parallel polyphase image interpolation.

Abstract: The present invention provides a method, system and login device for logging into a docbase management system. the method includes: establishing a login device which has a unified invocation interface; invoking, by a user, the login device via an application software unit, wherein the application software unit invokes the login device via the unified invocation interface; returning, by the login device, to the application software unit, access information of a role corresponding to the user achieved after successfully logging in the docbase management system; accessing, by the application software unit, the docbase management system by using the access information.

Abstract: Embodiments of the present invention provide a storage method and a distributed storage system. The storage method is applied to the distributed storage system comprising at least two storage control nodes and one storage pool shared by at least two storage control nodes. The storage pool includes at least two storage units. When data is to be written to the storage pool by any one of storage control nodes, the method comprises judging whether or not there exists a duplicate storage unit whose data content is the same as the currently-written data in the storage pool, and allocating one free storage unit from the storage pool and writing the currently-written data to the free storage unit when judgment result is NO.

Abstract: The present disclosure provides a method and apparatus for parallel filtering. The apparatus comprises: a multi-granularity memory, a data cache device, a coefficient buffer broadcast device, a vector operation device and a command queue device. The multi-granularity memory is configured to store data to be filtered, filter coefficients and filtering result data. The data cache device is configured to cache, read and update the data to be filtered. The coefficient buffer broadcast device is configured to cache and broadcast the read filter coefficients. The command queue device is configured to store and output a queue of operation commands for the parallel filtering operation. The vector operation device is configured to perform a vector operation based on the data to be filtered and the output coefficient data, and write an operation result into the multi-granularity filtering result storage unit.

Abstract: A system and method for electronic stamping are disclosed. Personal fingerprint pre-stored is used to verify the fingerprint information collected, the document data and the fingerprint information is signed with a private key to get a first signature result, the user's public key and the pre-stored fingerprint information is then signed with a private key of a stamp producer to get a second signature result, the first signature result, the collected fingerprint information and the second signature result are combined to form electronic fingerprint stamp data.

Abstract: A data storage system comprises at least one subsystem. Each subsystem includes at least two physical servers and at least two storage devices. Each physical server is connected to at least one storage device through a direct channel, and a part of storage medium in each storage device are used as a master storage area, another part of the storage medium in each storage device are used as a slave storage area. When data is written to the data storage system, the data is written to the master storage area of a certain storage device connected to a certain physical server in a certain subsystem, and is synchronized to the slave storage area of another storage device connected to anther physical server. A corresponding cloud serving method is disclosed.

Abstract: The present disclosure provides a processor having polymorphic instruction set architecture. The processor comprises a scalar processing unit, at least one polymorphic instruction processing unit, at least one multi-granularity parallel memory and a DMA controller. The polymorphic instruction processing unit comprises at least one functional unit. The polymorphic instruction processing unit is configured to interpret and execute a polymorphic instruction and the functional unit is configured to perform specific data operation tasks. The scalar processing unit is configured to invoke the polymorphic instruction and inquire an execution state of the polymorphic instruction. The DMA controller is configured to transmit configuration information for the polymorphic instruction and transmit data required by the polymorphic instruction to the multi-granularity parallel memory.

Abstract: A method for controlling security of cloud storage is developed to solve the problem in the prior art that the private key has a low security since the provider of the cloud storage service needs to control the private key in the case of sharing storage. The method comprises: encrypting a private key assigned to a user with two different encryption modes to obtain a first key and a second key and storing the first key and the second key; receiving an answer to a security question inputted by the user when decrypting the first key with a user password fails, and decrypting the second key with the answer to the security question to obtain the private key; and resetting the user password, encrypting the private key obtained by decryption with the answer to the security question to obtain a new first key.