Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Input/Output access regulation

Subclass of:

710 - Electrical computers and digital data processing systems: input/output

710001000 - INPUT/OUTPUT DATA PROCESSING

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
710038000 Path selection 73
710039000 Access request queuing 45
710051000 Accessing via a multiplexer 28
710048000 Input/Output interrupting 24
710040000 Access prioritization 16
710046000 Input/Output polling 12
710037000 Access dedication 6
Entries
DocumentTitleDate
20130080664SYSTEMS AND METHODS FOR CREATING BIDIRECTIONAL COMMUNICATION CHANNELS USING BLOCK DEVICES - A system includes an initiator device including an initiator interface. A target device includes a target interface that communicates with the initiator interface via a protocol. The protocol supports commands being sent from the initiator device to the target device. The protocol does not support commands being sent from the target device to the initiator device. The target interface is configured to send a command to the initiator device via the protocol. The initiator interface is configured to execute the command.03-28-2013
20130042031METHOD AND APPARATUS FOR CONTROLLING CONNECTION - A connection control method including receiving intrinsic information of a neighboring external device from the external device; detecting time information indicating a time at which the intrinsic information is received; and controlling a connection to the external device based on the intrinsic information and the time information.02-14-2013
20090157915METHOD FOR SWITCHING NODE AND AN INFORMATION PROCESSING SYSTEM - In an information processing system including host computers and disk devices, each of an execution-node host and a standby-node host includes an I/O request unit and an access-right change command unit. The I/O request unit issues an I/O request. The access-right change command unit transmits an access-right change command. The access-right change command results from causing I/O-enable/disable information and the host identification information to correspond to each other. The disk device includes an access control table, an access control unit, and an access-right change unit. The access control table stores information of the access-right change commands from the hosts. The access control unit judges the execution enablement/disablement for the I/O requests from the host identification information and the access control table. The access-right change unit, in accordance with the access-right change commands from the hosts, changes in batch the I/O-enable/disable information on each host basis within the access control table.06-18-2009
20090307391CONFIGURATION MANAGEMENT APPARATUS AND METHOD - To migrate a configuration that an old storage device has to a new storage device. A new storage device obtains a configuration of an old storage device, by using a migration manager, and prepares a logical volume definition of the new storage device based on a logical volume definition in the configuration. Also, based a cache allocation definition in the configuration and cache capacity of the new storage device, a cache allocation definition of the new storage device is prepared. Further, based on a port bandwidth allocation definition in the configuration and bandwidth capacity of a port of the new storage device, a port bandwidth allocation definition of the new storage device is prepared. The prepared logical volume definition, cache allocation definition and port bandwidth allocation definition are set up in a configuration of the new storage device.12-10-2009
20090307390ACCESS OF BUILT-IN PERIPHERAL COMPONENTS BY INTERNAL AND EXTERNAL BUS PATHWAYS - A computing network infrastructure supports access to built-in peripheral devices of a first computing device by a second computing device. Internal peripheral devices are communicatively coupled to internal processing circuitry (located in the first computing device), which supports access using an internal data bus. An external bus that provides data and power is used to provide access from the second computing device to the internal peripheral devices. Arbitration is provided for power and for data access. The internal peripheral devices may be accessed by the second computing device even when the first computing device is powered down or not in working condition. In one embodiment, the second computing device may access the internal peripheral devices through the same data bus that the internal processing circuitry uses.12-10-2009
20090307389SWITCHABLE ACCESS STATES FOR NON-VOLATILE STORAGE DEVICES - Techniques for switching access states for accessing non-volatile are disclosed. A plurality of non-volatile memory portions can be effectively presented as: (a) a single logical unit in a first access state (“single unit access state”) and (b) as multiple logical units in a second access state (“multi-unit access state”). An access switching system can be provided for a device that includes a plurality of non-volatile storage portions. As a result, the device can be operable to effectively switch between the first and second access states. In the first access state, the plurality of non-volatile storage portions can be effectively presented as a single logical unit for access by another device, thereby allowing the other device to effectively access the plurality of non-volatile storage portions from a single access point. However, the device can also be operable to switch to a second access state in which the plurality of the non-volatile storage portions can be effectively presented to the other device as multiple logical units, thereby allowing the other device to access the plurality of non-volatile storage portions individually by using multiple access points respectively associated with the multiple logical units presented to the other device.12-10-2009
20090271539STORAGE CONTROLLING UNIT - Provided is a storage controller capable of changing a system configuration with scalability. A storage controller blade of the storage controller includes: interface units that each connect to one of a host computer and a disk device; a processor unit that controls a configuration of the storage controller and data access; a memory unit that stores a data cache and configuration information on the interface unit and the processor unit; and a mutual connection unit that connects the interface units, the processor unit, and the memory unit to one another. The processor unit recognizes a form of connection to another storage controller blade over the mutual network, and the connection path to another storage controller blade is set in the mutual connection unit based on the recognized form of connection.10-29-2009
20110022743USB PORT FOR EMPLOYING A PLURALITY OF SELECTABLE DATA TRANSMISSION PRIORITY RULES - A USB port transmitter includes a plurality of arbiters, each employing a distinct priority rule to select one USB transmission from among multiple scheduled USB transmissions based on their types. A selector selects one of the arbiters to select the one USB transmission from among the multiple scheduled USB transmissions. A programmable storage element controls the selector to select the one arbiter. In one embodiment, at least a first arbiter prioritizes header/data packets higher than link commands, and at least a second arbiter prioritizes link commands higher than header/data packets. In one embodiment, at least one arbiter prioritizes flow control and power management link commands higher than header/data packets. In one embodiment, at least a first of the arbiters prioritizes USB LGO_Ux link commands higher than USB LAU/LXU link commands, and at least a second arbiter prioritizes USB LAU/LXU link commands higher than USB LGO_Ux link commands.01-27-2011
20120198104SYSTEM AND METHOD FOR ENABLING NETWORK ACCESS TO MASS STORAGE DEVICES CONNECTED TO MULTI-FUNCTION DEVICES - A system for enabling at least one mass storage device connected to at least one multi-function device to be accessible over a network, includes at least one processor; and a computer-readable storage medium in communication with the at least one processor, wherein the computer-readable storage medium comprises one or more programming instructions for receiving a plurality of requests from one or more electronic devices permitted to access the at least one multi-function device and allowing the one or more electronic devices to selectively access and modify electronic information located on the at least one mass storage device connected to the at least one multi-function device and accessible over the network.08-02-2012
20090013104STORAGE SYSTEM PROVIDING STREAM-ORIENTED PERFORMANCE ASSURANCE - A storage system including: a controller connectable to a plurality of computers; and a plurality of storage devices connected to the controller, wherein the plurality of storage devices store a plurality of contents, wherein the controller receives a first request from a one of the plurality of computers which requests access to a first content of the plurality of contents, wherein the controller calculates a first data transfer rate of the first request, and wherein, based on the first data transfer rate, the controller dynamically controls settings of a first storage system resource during performing a first data transfer operation to satisfy the first request, to substantially maintain the access to the first content at substantially the first data transfer rate.01-08-2009
20090013102Communication system - A communication system has: a controller that is connected to a plurality of field devices for inputting and outputting an analog signal and a digital signal; and a system computer that is provided in an upper hierarchical layer of the controller, and communicates with one of the plurality of field devices by using the digital signal through the controller. The communication system further has a path establishing section that selects a field device for communication from the plural field devices, and establishes a virtual communication channel to be a communication path for performing one-to-one communication with the selected field device via the system computer and the controller.01-08-2009
20090006670Cache for a host controller - In one embodiment, the present invention includes a host controller having a cache memory to store entries each including, at least, a command header (CH) portion having data associated with a command from the host controller to one of multiple devices coupled to a port multiplier, and a physical region descriptor (PRD) portion to store address information associated with a next address for data transfer with regard to the command. Other embodiments are described and claimed.01-01-2009
20100169517Multimedia Switch Circuit and Method - A detection circuit indicates when a source device is coupled to a sink. An interface circuit separately interfaces with the plurality of source devices and permits display identification data associated with an interfaced source device to be sent from the memory unit to the interfaced source device. A monitoring unit monitors communications between the plurality of source devices and a memory unit and generates a signal for the plurality of source devices upon identifying that the memory unit is available for storing display identification data that is associated with a remaining source device of the plurality of source devices. The signal is communicated to the control unit to cause the control unit to update the memory unit with the display identification data that is associated with the remaining source device(s). A power detection circuit powers the sink via power from a source device(s) in a low-power mode.07-01-2010
20080276016STORAGE CONTROLLER AND STORAGE CONTROLLER CONTROL METHOD - A storage controller of the present invention makes use of changes in power rates according to time periods, and controls the data storage destination between storage devices having different power consumption, such as a hard disk drive and a flash memory device. The storage controller comprises a hard disk drive and a flash memory device for which power consumption differs. A schedule manager manages a schedule for controlling the storage destination of data used by a host. Data is copied from the hard disk drive to the flash memory device at night, when the power rate is low. An access from a host is processed using data inside the flash memory device during the daytime when the power rate is high. The next night, the difference is copied so that the data of the flash memory device coincides with the data of the hard disk drive.11-06-2008
20080276017SYSTEM AND ARTICLE OF MANUFACTURE FOR THE DETECTION OF MISDIRECTED DATA - Provided are a system and article of manufacture, wherein in certain embodiments an I/O command from a host is received at a first storage unit. An identifier is generated that identifies a destination to which the I/O command is to be transmitted from the first storage unit. The I/O command is augmented with the generated identifier at the first storage unit. The augmented I/O command is transmitted. In certain other embodiments, an I/O command is received at a storage unit, wherein the storage unit is associated with a storage unit identifier. A determination is made at the storage unit, whether the I/O command is associated with an identifier that identifies a destination for which the I/O command is intended. A further determination is made, at the storage unit, whether the identifier is the same as the storage unit identifier, in response to determining that the identifier associated with the I/O command identifies the destination for which the I/O command is intended.11-06-2008
20080244116SYSTEM AND METHOD TO MANAGE MOVEMENT OF ASSETS - An embodiment of a system to manage movement of at least one asset is provided. The system includes at least one tracking element operable to generate a signal representative of a location of the asset, and a controller in communication with the tracking element. The controller includes computer readable program instructions representative of the steps of receiving the signal representative of the location of the asset having a unique identifier; identifying a status indicator for the asset having the unique identifier; comparing a change in the location of the asset in view of the status indicator relative to a predetermined location change rule; and generating a signal representative of one of a valid and an invalid change in the location in response to an output of the comparing step for illustration on a display.10-02-2008
20090083453ASYNCHRONOUS/SYNCHRONOUS KVMP SWITCH FOR CONSOLE DEVICES AND PERIPHERAL DEVICES - A signal switch for sharing a video monitor, a plurality of console devices compliant with an industry standard and one or more than one peripheral device in any of a plurality of computer systems, is provided. A KVM switch allows all the computers connected to the switch to share any USB peripheral devices, and which can switch the KVM channels and peripheral channels to a common computer or to different computers either asynchronously or synchronously without interruption of data flow to that peripheral when the switch is changed. In another embodiment the KVM switch allows a keyboard and a mouse of a user console to separately control two different computers. In another embodiment, the KVM switch is connected to the computers via computer connection modules and connected to a user console and peripheral devices via a console connection module.03-26-2009
20090019191IMAGE FORMATION APPARATUS CAPABLE OF PREVENTING ACCESS TO IMPROPER USB MEMORY, AND CONTROL METHOD FOR IMAGE FORMATION APPARATUS - Determination is made whether acceptance of a job on a USB memory is permitted or not. When in a USB memory job acceptance permitted state, a USB memory job selection display process is executed. When in a USB memory job acceptance prohibited state, a USB memory plural load prohibition display process is executed. When in a USB memory job acceptance prohibited state, the relevant display screen is continuously provided. Therefore, the user is provided with the relevant display screen to be prompted confirmation of the loading of a USB memory01-15-2009
20090013103Data sharing and transfer systems and methods - A communication system may include one or more communication interfaces, a controller, and a storage unit. The communication interface(s) may be configured to be coupled to first and second computing devices. The controller is configured to establish a communication channel between the first and second computing devices. The first and second communication interfaces are coupled with the controller, and the controller is further configured to receive from at least one of the first and second computing devices a communication command communicated in a first format consistent with an external storage device protocol. The storage unit is coupled with the controller and contains a set of instructions recognizable and executable by the first and second computing devices for converting communication requests from at least one of the first and second computing devices to the communication command. The controller is configured to be recognizable by at least one of the first and second computing devices as a storage device controller.01-08-2009
20110225326Multi-Mode Processing Module and Method of Use - A method of enabling access to resources includes detecting an input to access a resource of a multi-mode processing module coupled to a host processor and a control module. The method can further include detecting an operating mode of the host processor and the control module and an availability of independent peripheral resources of the multi-mode processing module. Additionally, the method can enable the multi-mode processing module in response to the detecting the operating mode and the availability of the independent peripheral resources.09-15-2011
20090198844PROGRAMMABLE CONTROLLER AND COMMUNICATION UNIT THEREFOR - A programmable controller includes a CPU unit, a communication unit and peripheral units connected together through an internal bus. The communication unit has a bus master function, including a cache memory for recording IO data stored in the memory of an input-output unit. When a message is received, it is judged whether the IO data stored in the memory of the input-output unit specified by this message is updated or not. If the data are not updated, a response is created based on the IO data stored in the IO data stored in the cache memory. If the data are updated, the input-output unit is accessed and updated IO data are obtained and a response is created based on the obtained IO data.08-06-2009
20090063732KVM switch and method for controlling the same - A KVM switch connected between a plurality of consoles including a plurality of monitors, and a plurality of information processing apparatuses, comprises a setting portion that sets a part or all of the plurality of consoles to each information processing apparatus as one group, wherein the plurality of monitors included in the plurality of consoles which are set as one group by the setting portion display information from an information processing apparatus corresponding to the group.03-05-2009
20090210584EXCEPTION CONDITION DETERMINATION AT A CONTROL UNIT IN AN I/O PROCESSING SYSTEM - A computer program product, apparatus, and method for providing exception condition feedback at a control unit to a channel subsystem in an I/O processing system are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method. The method includes receiving a command message at the control unit from the channel subsystem, and detecting an exception condition in response to unsuccessful execution of at least one command in the command message. The method further includes identifying a termination reason code associated with the exception condition, writing the termination reason code to a response message, and sending the response message to the channel subsystem.08-20-2009
20090210583RESERVED DEVICE ACCESS CONTENTION REDUCTION - A computer program product, an apparatus, and a method for reducing reserved device access contention at a control unit in communication with a plurality of operating systems via one or more channels are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method that includes receiving a command message at the control unit from a first operating system, including an I/O operation command for a device. A device busy indicator is received, indicating that a second operating system has reserved the device. The command message is queued on a device busy queue in response to the device busy indicator. The control unit monitors for a device end indicator. The device busy queue is serviced to perform the I/O operation command in response to the device end indicator.08-20-2009
20090248915COMMUNICATION CONTROL APPARATUS AND COMMUNICATION CONTROL METHOD - A communication control apparatus includes a communication terminal capable of performing communication with an external apparatus. The communication control apparatus includes virtual interfaces for separately receiving, through a communication terminal, plural sets of access information representing respective specifics of I/O accesses which are output to one I/O device from a plurality of virtual processing units in the external apparatus. The communication control apparatus includes a match determination unit for comparing the plural sets of access information received from the external apparatus by the virtual interfaces, and determining whether the plural sets of access information are matched with each other. The communication control apparatus includes an access control unit for, when the plural sets of access information received by the plurality of virtual interfaces are matched with each other, sending the relevant access information to the I/O device that is an access destination of the relevant access information.10-01-2009
20090276549Access for host stacks - This invention relates to a method, a computer program product, a device, and a system for using one host controller by at least two host stacks and handling accesses to the host controller based on access rules.11-05-2009
20080307124INPUT/OUTPUT CONTROL APPARATUS, INPUT/OUTPUT CONTROL SYSTEM, AND INPUT/OUTPUT CONTROL METHOD - An input/output control apparatus includes: a request acceptance unit configured to accept a switch request for requesting to change an operating system occupying any one of the input device and the output device; a control information generator unit configured to generate control information including any one of input destination information and output enable information in response to the switch request; and a control information output unit configured to output any one of the input destination information and the output enable information. The input destination information includes at least information for specifying an input destination operating system to which information inputted from the input device is inputted; and the output enable information includes at least information for specifying whether or not each of the plurality of operating systems can output information to the output device.12-11-2008
20100228896Semiconductor Devices Capable of Dividing Endpoint into Majority of Sub-Endpoints - A semiconductor device includes at least one endpoint communicating with a host, and an endpoint controller dividing each of the at least one endpoint into a majority of sub-endpoints and performing numbering to each of the divided sub-endpoints. The endpoint controller transmits a packet generated by the host to any one of the sub-endpoints.09-09-2010
20100250795Method and system for implementing parallelism with SCSI I/O referrals - A method for communication between an initiator system and a block storage cluster may include receiving a first input/output (I/O) request from the initiator system. The method may also include sending a referral response from a first storage system included in a plurality of storage systems of the block storage cluster to the initiator system when data associated with the first I/O request is stored in more than one storage system of the plurality of storage systems of the block storage cluster. Additionally, the method may include directing a referral I/O to the first storage system and the second storage system for transferring data to or transferring data from the first storage system and the second storage system, and transferring data associated with the referral I/O to or transferring data associated with the referral I/O from the first storage system and the second storage system.09-30-2010
20100138569METHOD AND APPARATUS FOR CONTROLLING THE ACCESS BY A PLURALITY APPLICATIONS - The invention relates to a method and a device for controlling access to multiple applications which are each implemented as a client application in an operating system environment of a data processing device from a shared memory system. The problem addressed by the invention is that of providing an improved method and an improved device for controlling access to multiple applications which are each implemented as a client application in an operating system environment of a data processing device from a shared memory system, which allow an efficient exchange of data for input/output. In particular, interaction with multimedia data in such an operating environment should be optimized. The invention comprises the details of a method for controlling access to multiple applications which are each implemented as a client application in an operating system environment of a data processing device from a shared memory system which is constructed in the form of multiple memory blocks in the operating system environment, which are each assigned to one of the client applications.06-03-2010
20090210582PROVIDING EXTENDED MEASUREMENT DATA IN AN I/O PROCESSING SYSTEM - An article of manufacture, an apparatus, and a method for providing extended measurement word data from a control unit to a channel subsystem of an I/O processing system are disclosed. The article of manufacture includes at least one computer usable medium having computer readable program code logic. The computer readable program code logic performs a method including receiving a command message from the channel subsystem at the control unit, and initiating a timing calculation sequence of a plurality of time values in response to receiving the command message at the control unit. The computer readable program code logic also populates extended measurement word data at the control unit including the plurality of time values, and outputs the extended measurement word data from the control unit to the channel subsystem.08-20-2009
20090113084Controlling transmission on an asynchronous bus - In one embodiment, the present invention includes a bus controller including a mutual exclusion unit to receive a data transmission request from first and second agents and to select one of the agents for servicing based on which agent is the first to send the request, multiple selection units controlled by the mutual exclusion unit, and a two-phase register coupled to at least one of the selection units to transmit data from the selected agent. Other embodiments are described and claimed.04-30-2009
20090037617MIDDLE MANAGEMENT OF INPUT/OUTPUT IN SERVER SYSTEMS - A middle manager and methods are provided to enable a plurality of host devices to share one or more input/output devices. The middle manager initializes each shared input/output device and binds one or more functions of each input/output device to a specific host node in the system, such that hosts may only access functions to which they are bound. The middle manager may also utilize a configuration register map to translate values from the actual configuration register into a unique modified value for each of the plurality of host devices such that each host device may access and use the shared input/output device regardless of the firmware or operating system operating thereon.02-05-2009
20100306424CONNECTION BETWEEN A CLIENT DEVICE AND MULTIPLE HOST DEVICES - A method of handling a connection between a client device and a plurality of host devices comprises connecting the client device to a host device of the plurality of host devices, transmitting a message from the client device to the connected host device, the message requesting transferring the connection to a different host device, the connected host device disconnecting the connection to the client device, and the different host device connecting to the client device.12-02-2010
20110010473Computer Monitor With Integral KVM Switch - A computer monitor incorporates a KVM switch.01-13-2011
20110082950COMPUTER SYSTEM AND COMPUTER SYSTEM INPUT/OUTPUT METHOD - Under the environment where a storage system is virtualized by Thin Provisioning technology or the like, it is difficult to statically estimate the I/O characteristics of the entire virtual volume, causing a problem that the effect of input/output control by a computer cannot be fully achieved by I/O scheduling that is based on the characteristics of a virtual volume unit. To solve the above problem, the computer system of the present invention acquires characteristics information of a storage apparatus in which there exists an actual storage area corresponding to a virtual volume storage area that is the access target when accessing the virtual volume, divides an I/O request with respect to the virtual volume by storage apparatus in a case where the I/O request spans multiple storage apparatuses, carries out I/O scheduling based on the acquired actual area characteristics information, and issues the I/O request directly to the storage apparatus in accordance with the I/O scheduling result.04-07-2011
20100042760METHOD FOR EXECUTING AN APPLICATION WITH THE AID OF A PORTABLE DATA STORAGE MEDIUM - The invention relates to a method for carrying out an application with the help of a portable data carrier (02-18-2010
20100036980MULTI-MODE PROCESSING MODULE AND METHOD OF USE - A multi-mode processing module and method of use are disclosed. In a particular form, a multi-mode processing module can include a peripheral interface configured to be enabled in response to a peripheral application access request. The multi-mode processing module can further include a plurality of independent peripheral resources individually accessible to a host processor via the peripheral interface. The multi-mode processing module can also include a local processor configurable to enable the plurality of independent peripheral resources in response to a request by the host processor.02-11-2010
20090216920Dis-Aggregated and Distributed Data-Center Architecture Using a Direct Interconnect Fabric - A data center has several dis-aggregated data clusters that connect to the Internet through a firewall and load-balancer. Each dis-aggregated data cluster has several dis-aggregated compute/switch/disk chassis that are connected together by a mesh of Ethernet links. Each dis-aggregated compute/switch/disk chassis has many processing nodes, disk nodes, and I/O nodes on node cards that are inserted into the chassis. These node cards are connected together by a direct interconnect fabric. Using the direct interconnect fabric, remote I/O and disk nodes appear to the operating system to be located on the local processor's own peripheral bus. A virtual Ethernet controller and a virtual generic peripheral act as virtual endpoints for the local processor's peripheral bus. I/O and disk node peripherals are virtualized by hardware without software drivers. Rack and aggregation Ethernet switches are eliminated using the direct interconnect fabric, which provides a flatter, dis-aggregated hierarchy.08-27-2009
20100250796Establishing a Secure Channel between a Server and a Portable Device - Systems and method for forming a secure channel between a server and a portable storage device coupled to a host computer are presented. A message sequence is exchanged between the server and the portable storage device. The message sequence may pass transparently through the host computer to the portable storage device. The server and the portable storage device may be authenticated based on the message sequence. A secure channel may be established between the server and the portable storage device when the server and the portable storage device are authenticated. As such, the host computer, as well as any other interstitial device between the server and the portable storage device, cannot access information transferred via the secure channel.09-30-2010
20080228963Method and apparatus for transferring settings and other configuration information from one consumer electronics device to another - A method and apparatus is provided for inputting user-selected settings to a second consumer electronic device. The method begins by establishing a first communication path between a first consumer electronic device and the second consumer electronic device. The first communication path is configured to transfer content to be rendered by at least one of the devices. The first device is queried over the first communication path to identify user-selected settings established in the first device that are applicable to the second device. In response to the query, the applicable user-selected settings are transferred over the first communication path from the first device to the second device. The transferred applicable user-selected settings are stored in respective fields of a settings database associated with the second device.09-18-2008
20110161532TRANSCEIVER FOR WIRED SERIAL COMMUNICATION - This document discusses, among other things, transceiver apparatus and methods for wired serial communication to a remote device. The transceiver can be configured to generate an output signal using received compensation information to maintain a specified signal quality at the remote device. The transceiver can include an input for receiving first information, a compensation input for receiving the compensation information and an output to transmit the output signal including the first information to a component coupled between the transceiver and the remote device.06-30-2011
20100293306CONNECTION DEVICE RESTRICTION PROGRAM AND DEVICE - A connection device restriction program for preventing use of uncalled-for connection devices. A permission list setting unit sets a connection permission list holding information defining connection devices whose connection is to be permitted, and a list memory stores the connection permission list. When a connection device is connected to one of first to third connection ports, a connection restriction unit acquires device information from the connection device, and collates the device information with the connection permission list to determine whether or not the connection device corresponds to any one of the connection-permitted devices. If the connection device corresponds to any one of the connection-permitted devices, connection of the device is permitted; if not, connection of the device is forbidden.11-18-2010
20110125937PERIPHERAL DEVICE USABLE WITHOUT INSTALLING DRIVER IN COMPUTER BEFOREHAND - The storage unit of a peripheral device has a first storage area and a second storage area. The first storage area stores a plurality of control programs corresponding to a plurality of operating systems of different types. The second storage area is a storage area which is recognized by an information processing apparatus as an external storage device and in which at least one control program is replicated from the first storage area. The information processing apparatus reads out the control program from the second storage recognized by it as the external storage device, and executes the program. The information processing apparatus thus controls the peripheral device.05-26-2011
20100088437INFINIBAND ADAPTIVE CONGESTION CONTROL ADAPTIVE MARKING RATE - A device and a method for optimizing data transfer rate in an InfiniBand fabric is provided where a various number of transmitting devices aim data packets to a single receiving device or through a common link. The method which is implemented in an InfiniBand switch includes marking of packets in a rate corresponding to centrally configured marking rate, determination of the current number of data flows between the input ports and the output port of the switch and marking the data packet with Forward Explicit Congestion Notification according to an adaptive value of marking rate which depends on the initial value of the marking rate and is inversely proportional to the number of data flows.04-08-2010
20120011288Specific identification information management device, information processing device, and specific identification information setting method - A specific identification information management device coupled to a feature expansion device includes: a storage unit configured to store the specific identification information of the feature expansion device; a detection unit configured to detect access to the feature expansion device; and a control unit configured to transmit the specific identification information stored in the storage unit to the source of access to the feature expansion device when the access is detected by the detection unit.01-12-2012
20120159017METHOD AND APPARATUS FOR ROUTING TRANSACTIONS THROUGH PARTITIONS OF A SYSTEM-ON-CHIP - A node having a node input is configured to receive a plurality of transactions intended for a plurality of different targets. The node has multiple node outputs. At least one target is provided, that target including an input configured to receive a respective output of the node. The node is configured to direct transactions to the at least one target or an output (for passing to a different partition) depending on whether the transactions are intended for the target or a different target. This determination is made in response to a conversion operation which converts a target address of the transaction to an identification associated with the target or the output.06-21-2012
20120072622USING PROCESS LOCATION TO BIND IO RESOURCES ON NUMA ARCHITECTURES - In general, in one aspect, the invention relates to a method for binding input/output (I/O) objects to nodes. The method includes receiving a request to use an I/O device from a process, determining a resource to service the request, generating a first I/O object corresponding to the resource, wherein the first I/O object is unbound, and generating a proc object, wherein the proc object comprises a reference to the process requesting to use the I/O device. The method also includes sending the first I/O object and the proc object to a Non-Uniform Memory Access (NUMA) I/O Framework, determining that the process is executing on a first NUMA node, selecting the first NUMA, binding the first I/O object to the first NUMA node, and servicing the request by processing, on the first NUMA node, the resource corresponding to the first I/O object.03-22-2012
20110106987METHOD FOR CONTROLLING A PLURALITY OF PERSONAL COMPUTER HOSTS BY UTILIZING ONLY ONE PERSONAL COMPUTER HOST, AND ASSOCIATED CONTROLLER AND PERSONAL COMPUTER - A controller includes a first USB interface, a second USB interface and a control circuit, where the first USB interface is utilized for connecting to a first personal computer host, and the second USB interface is utilized for connecting to a second personal computer host, and the control circuit is coupled to the first and second interfaces. The control circuit receives a control signal from the first personal computer host via the first USB interface, and transmits the control signal to the second personal computer host via the second USB interface to control operations of the second personal computer host.05-05-2011
20100095028SWITCHING DEVICE FOR SHARING INPUT/OUTPUT DEVICES AND COMPUTER SYSTEM USING THE SAME - A switching device that selectively switches connections to a predetermined terminal among two or more terminals connected to servers, and can be remote-controlled via a network, includes a network interface circuit to be connected to the network, an image processing unit that includes an image compression circuit for compressing image signals outputted from the servers, and a controller that changes a compression method or compression rate to be used at the image compression circuit in accordance with the congestion level of the network.04-15-2010
20100299459REFLECTING BANDWIDTH AND PRIORITY IN NETWORK ATTACHED STORAGE I/O - A method for processing a first input/output (I/O) request on a network attached storage (NAS) device that includes receiving the first I/O request from a source by the NAS device, placing the first I/O request in an I/O queue associated with the NAS device, wherein the first I/O request is placed in the I/O queue based on a priority of the first I/O request using a remote storage access protocol, and when the first I/O request is associated with the highest priority in the I/O queue, determining whether a bandwidth associated with the source of the first I/O request is exceeded, processing the first I/O request if the bandwidth associated with the source of the first I/O request is not exceeded, and placing the first I/O request in sleep mode if the bandwidth associated with the source of the first I/O request is exceeded.11-25-2010
20100049885Unified multi-transport medium connector architecture - A device, method, and system are disclosed. In one embodiment the device includes a router to transmit data packets between multiple host controllers and one or more peripheral devices. The router can receive a data packet from a host controller and transmit the data packet to a peripheral device across a data transmission path. The peripheral device is coupled to the first data transmission path through a first universal multi-transport medium (UMTM) connector. The connector includes an optical coupling capable of transporting the first data packet within an optical signal and an electrical coupling capable of transporting the first data packet within an electrical signal.02-25-2010
20090070497APPARATUS AND PROGRAM PRODUCT FOR STORING FIBRE CHANNEL INFORMATION ON AN INFINIBAND ADMINISTRATION DATA BASE - Host computing systems with the ability to efficiently identify the Infiniband™ (IB) addressing parameters corresponding to Fibre Channel I/O devices that are accessible through IB-to-Fibre Channel adapters. An efficient apparatus and program product is described to store the IB addressing parameters pertaining to individual Fibre Channel I/O devices on a subnet administration database, and an efficient mechanism to recover from the database, the IB addressing parameters corresponding to all physical paths by which a desired Fibre Channel I/O device is accessible.03-12-2009
20080301331Control method and computer system utilizing the same - A computer system comprising a memory module, a connection port, and a central processing unit (CPU) is disclosed. The memory module stores a main base input/output system (BIOS) comprising an auxiliary function. The connection port is capable of connecting an auxiliary module comprising at least one specific program. The CPU executes the main BIOS when the auxiliary function is de-activated. The CPU executes the specific program when the auxiliary function is activated.12-04-2008
20110004706Data processing system for keeping isolation between logical partitions - When a subject of access of a transaction from an IO device is not any resource allocated to a logical partition to which the device having issued the transaction belongs, a report as an error is sent to a CPU, while the transaction is finished on the IO bus. To prevent a transaction between IO devices from gaining access to any resource in another logical partition, one access permission bit is provided for each combination of all the IO devices, and the access is permitted only when the bit has a predetermined value. A reset signal is provided by IO slot so that only an IO slot allocated to a specific logical partition can be reset without affecting any other logical partition. A transaction issued from an IO device in one logical partition is prevented from gaining access to a resource in another logical partition, while proper error handling can be performed.01-06-2011
20120265907ACCESS METHOD, COMPUTER AND RECORDING MEDIUM - An access method includes: obtaining, by a computer, a result of monitoring a busy rate and a number of access operations per unit time of a storage device, the storage device having a first storage area and a second storage area; calculating a characteristic of correlation between the busy rate and the number of access operations per unit time based on the result; calculating a second number of access operations per unit time based on the characteristic of the correlation such that a sum of a first busy rate corresponding to a first number of access operations per unit time and a second busy rate corresponding to a second number of access operations per unit time becomes equal to or lower than a given busy rate; and controlling a number of operations to access the second storage area per unit time based on the second number of access operations.10-18-2012
20120102242CONTROLLING DATA DESTAGING WITHIN A MULTI-TIERED STORAGE SYSTEM - There is provided according to an example of the claimed subject matter, a system and a method for managing access to a shared storage entity. According to an example of the claimed subject matter, a system for managing access to a shared storage entity can include two or more initiator entities, two or more local sequencing agents and an arbitration module. Each of the two or more local sequencing agents can be associated with a respective one of two or more initiator entities which generate I/O requests for accessing the shared storage entity. Each local sequencing agent can be adapted to locally sequence its respective initiator entity's I/O requests. The arbitration module can be adapted to manage an access cycle to the shared storage entity by allocating to each one of the plurality of initiator entities a monolithic/continuous chunk of the access cycle to implement its own I/O access sequence, wherein chunk allocation is determined according to subframe allocation criteria related to the functional characteristics of each of the initiator entities.04-26-2012
20100131681Bus Based Communications Between A Processor And A Peripheral Controller In A Digital Processing System - According to an aspect of the present invention, the communication between processors and peripheral controllers is provided using packets. In an embodiment, the access requests are specified according to a common format such that all the information required for performing each access request is included in a single packet and sent to the peripheral controller. The peripheral controller performs the access request on the external device and generates a response. According to another aspect, the packet format enables the peripheral controller to send responses, requests originating from the external devices and interrupt requests. According to yet another aspect, the packets from processors are first stored in a random access memory (RAM) and a DMA controller retrieves the packets and delivered to the respective peripheral controllers.05-27-2010
20100281191Striping with SCSI I/O referrals - The present disclosure is directed to a method for communication between an initiator system and a block storage cluster. The method may comprise initiating an input/output (I/O) request from the initiator system to a first storage system included in a plurality of storage systems of the block storage cluster, each of the plurality of storage systems comprising a plurality of data segments; receiving a referral response from the first storage system, the referral response providing information describing a layout of data requested in the I/O request; obtaining a virtual disk count, a segment size, and at least one indexed port identifier based on the referral response; and directing the I/O request from the initiator system to the block storage cluster based on the virtual disk count, the segment size, and the at least one indexed port identifier.11-04-2010
20110213903Pin Multiplexing - A semiconductor device coupled to input/output pins includes a first core to operate a first function and a second core to operate a second function. A multiplexer is arranged to set the input/output pins to the first function or to the second function, and an arbiter is configured to receive requests from the cores to use the input/output pins and to grant use of the input/output pins to a selected core. A register is arranged to store a value indicative of a delay to be applied by the arbiter when granting use of the input/output pins to the second core.09-01-2011

Patent applications in class Input/Output access regulation

Patent applications in all subclasses Input/Output access regulation