40 results about "Primary status" patented technology

A data communication for a handoff mobile unit is maintained by data forwarding through neighboring mobile units in indoor wireless cellular communication networks operates such that, when the master unit has no available channels, the mobile unit switches over to master status to create an ad hoc cell. The mobile unit then pages neighboring slave mobile units for data forwarding assistance. The mobile unit chooses one or more slave mobile units and establishes wireless links with the chosen slave mobile units. These chosen mobile units then have two masters; one the master unit of the cell and the other the handoff mobile unit which has created the ad hoc cell. A list of the slave mobile units in the ad hoc cell is sent to the network server, and data communication proceeds with data forwarding through the chosen mobile slave units. When a channel becomes available with the master unit for the cell, the handoff mobile unit becomes a slave mobile unit to the master unit and the ad hoc cell is dissolved.

The invention discloses a master / slave scheduling method in a multimachine assembly, and relates to the field of computer application control. The designation of the master / slave status of a process is carried out in a multimachine assembly environment; the same application system is arranged on a plurality of servers; and the equalized distribution of the master / slave status of a process group is realized on a plurality of hosts through the grouping of the application system processes. When the multimachine assembly has a single point failure, the processes which run in a master status on the host is migrated to run on the other hosts. When a certain master status application process on a certain server quits, the function of the certain application process is migrated to the other hosts with relatively low load. Particularly assembly control software, a development interface library and an assembly configuration file are installed on each assembly host. The information transmission between the hosts is carried out through heart-throb messages; the scheduling granularity is the process groups; each process group configures a load factor according to the CPU occupancy; and the assembly scheduling meets the assembly load balancing scheduling algorithm. The method realizes the automatic scheduling of the multimachine assembly system according to the load, and is more scientific and reasonable.

One embodiment includes a future activity list (FAL) maintained within a peripheral bus host controller. The FAL includes information indicating for a number of peripheral bus frames whether those frames will have activity or are null. For frames that will have activity, the host controller performs a system memory read to gather information required to process the active frame. For frames that are null, the host controller does not perform the system memory read. A bus master status bit is pegged (continually set to “true”) by the host controller only when the host controller is processing an active frame. Because the bus master status bit is not pegged by the host controller during null frames, there is greater opportunity for an operating system to enter lower power states.

A method for fault tolerant controller readiness. Executing functions by a first controller operating in a primary status mode. Operating in a hot standby status mode by a second controller and mirroring the first controller by executing functions to operate as a redundant controller. Operating in a cold standby status mode by at least one backup controller under normal operating conditions. The second controller is reconfigured while operating under normal operating conditions from the hot standby status mode to the primary standby status mode if a failure occurs in the first controller. Reconfiguring the at least one backup controller operating under normal operating conditions from cold standby status mode to hot standby status mode to operate as a redundant controller in response to the reconfiguring the second controller from the hot standby status mode to the primary status mode.

A multi-core processor system, a dynamic power management method thereof and a control apparatus thereof are provided. In the method, a workload of a multi-core processor during a runtime stage is obtained. Next, a hot-plug operation is respectively performed on a plurality of slave cores according to the workload and a working state of each slave core. Then, a bus master status and the working state of a boot core are monitored to determine whether to power off the boot core, in which the bus master status is generated by combining a plurality of device statuses reflected by a plurality of peripheral devices. Finally, when the bus master status is determined as idle, the boot core is powered off.

The invention discloses an Ethernet communication master station implementation method, comprising an Ethernet, a master station and a slave station, wherein the master station is connected with the Ethernet by a connector, and forms a bus structure with the slave station which is connected with the master station by the Ethernet; the method specifically comprises the following steps: a initializing the master station and scanning the bus, b configuring the bus and synchronously monitoring the real-time state of the bus, and c entering to the normal running stage by the bus so as to finish data communication work between the master station and the slave station. The method has beneficial effects that the master station can dynamically adjust the instruction sending time according to system task scheduling jitter and application program execution time jitter, so as to ensure the consistency of the rhythms of the master station and the slave station in reading and writing data, the real-time requirement of the method to the master station is not very high, and the allowed system task scheduling jitter is larger and larger along with the shortening of the execution time of the upper application program.

In a power controller or other computing resource shared by multiple processors, an ID is written to the lock register, thereby designating a master processor. A timer is then initialized to count for a predetermined period. Periodically, the master processor transmits a “heartbeat” signal to the shared resource, indicating that its operation remains normal. Upon receipt of the heartbeat signal, the timer is reset and begins a new count for the predetermined period. If the timer reaches the end of the period without having received a heartbeat signal, indicating that the master processor has failed or hung, the lock register is cleared again and an interrupt signal is broadcast to all of the processors. The processors compete for master status anew and, when an ID is successfully written to the lock register, the timer is restarted and the new master periodically transmits its heartbeat signal.

An information handling system is provided. The information handling system includes at least one server, that includes a plurality of ports, wherein information is transmitted to and from the at least one server on the plurality of ports, and a memory storing a table, the table storing a status indication and port on which the status indication was received. The information handling system also includes a plurality of switches coupled to the at least one server to form a link aggregation group (LAG), the plurality of switches transmitting information including the status indication to the at least one server. If the server receives more than one status indication having a master status, the at least one server is configured to stop forwarding information on at least one port on which information including a master status indication has been received after previously receiving information that did not include a master status indication.

From among a plurality of threads accessing a shared data object, one thread acquires a “master” status to arbitrate among the requests of competing threads during a given session of data access to the shared data object. During the session, the master thread resolves any conflicts resulting from attempts to access or modify the shared data object by other threads, and only the master thread may apply modifications to the shared data object during the session. Meanwhile, during the session, non-master threads may perform non-blocking read operations on the shared data object. During a subsequent session, a different thread may acquire master status.

In a power controller or other computing resource shared by multiple processors, an ID is written to the lock register, thereby designating a master processor. A timer is then initialized to count for a predetermined period. Periodically, the master processor transmits a “heartbeat” signal to the shared resource, indicating that its operation remains normal. Upon receipt of the heartbeat signal, the timer is reset and begins a new count for the predetermined period. If the timer reaches the end of the period without having received a heartbeat signal, indicating that the master processor has failed or hung, the lock register is cleared again and an interrupt signal is broadcast to all of the processors. The processors compete for master status anew and, when an ID is successfully written to the lock register, the timer is restarted and the new master periodically transmits its heartbeat signal.

Disclosed is a system and method for displaying status information from several devices in a computer system. A primary status indicator is associated with a server or a group of servers. The primary status indicator is communicatively coupled to the server management software that is monitoring the server or server group. During the period that the server management software does not detect a failure or an imminent failure in any component of the server or server group, the primary status indicator will be illuminated to reflect a normal operating status. If the server management software detects a failure or an imminent failure in a component of the server or a server in the server group, the primary status indicator will be illuminated to reflect an alert status.

An airport panel monitor system includes a control device and a control device in which, the controlled device contains a first data and parameter, the said control device transfers the said first data on the said control device which delivers a second data to the said controlled device an can master status of the controlled device timely to make instructions to the controlled device and provides information timely to reach the aim of airport monitor.

A persistent peer-to-peer network is implemented over a network with master-slave topology. Data being sent from master to slave or from slave to master are sent in one transmission, but data sent from one slave to another is received by the master and retransmitted to the slave. A session table is kept at each device includes an ordered list of devices, where the first device is the master device. When a master device drops out of the network the slave devices promote the next device in the ordered list of devices to master. A master device may also receive a request from a slave device to become master, and update its session table and send the updated session table to all devices. The slave device requesting master status is then treated as master by all devices in the network.

A status ribbon to display a signal characteristic for multiple channels / codes within a region of interest has a plurality of stripes. A value for each stripe is represented by a trait of the stripe, such as color or brightness. The trait may represent a range of a signal parameter or may represent a pass / caution / fail value for the signal parameter, or may represent code activity. A window may be used to select a subset of channels / codes for additional detail, the additional detail being displayed textually adjacent the status ribbon. Also a subsidiary status ribbon may be displayed for channels / codes where each stripe of the primary status ribbon represents more than one channel / code, each stripe in the subsidiary status ribbon representing a single channel / code.

An communications method for intercommunication by multiple electronic devices includes determining an on or off status of a first communication device, the first communication device being given master status if turned on and being used, and other devices being given slave status. If one other device is then used in preference to the first communication device, the other device is appointed as master and all other devices which are turned on are appointed as slaves. According to current state of the first communication device, the first communication device is turned off if not being used.

A system and method for relinquishing a network master device status in accordance with a device power reserve level includes a system having a network master device for monitoring its own power reserve level and relinquishing its network master status for that of network slave status when such level is below a threshold value, and one or more network slave devices where each such device is in signal communication with the network master device for monitoring its own power reserve level and relinquishing its network slave status for that of network master status when such level is above at least one of the threshold value and the power reserve level of the master; and further includes a corresponding method for a wireless master device to relinquish its network master status based on its power reserve level, where the method includes monitoring the power reserve level of the wireless master device, determining whether the monitored power reserve level falls below a threshold, and relinquishing the network master status of the wireless device for that of network slave status if the power reserve level falls below the threshold.

A computer-implemented method for distributing a plurality of data partitions among a cluster of computer nodes includes dividing a database into a plurality of primary partitions, storing the primary partitions on a plurality of nodes associated with a computer network, duplicating the primary partitions to create a plurality of secondary partitions and storing the secondary partitions on the nodes, wherein the primary and secondary partitions are substantially evenly distributed among the nodes, each secondary partition is stored on a different node than its corresponding primary partition, diversity exists with respect to each secondary partition and the node where it is stored, the primary partitions are available to serve a system workload, and one or more secondary partitions corresponding to one or more primary partitions of a failed node are available to be upgraded to primary status to maintain workload balancing and data availability after one of the computer nodes fails.

One embodiment includes a future activity list (FAL) maintained within a peripheral bus host controller. The FAL includes information indicating for a number of peripheral bus frames whether those frames will have activity or are null. For frames that will have activity, the host controller performs a system memory read to gather information required to process the active frame. For frames that are null, the host controller does not perform the system memory read. A bus master status bit is pegged (continually set to “true”) by the host controller only when the host controller is processing an active frame. Because the bus master status bit is not pegged by the host controller during null frames, there is greater opportunity for an operating system to enter lower power states.

Implementations are provided herein for atomically committing related stream data across multiple, distributed resources. Transactions can be established that are distributed across multiple hosts, and their data can be made to appear atomic to an observing process. A master status for the transaction can be used to flag to other processes that the transaction is being committed. A stream to which the transaction is being appended to can be locked until the transaction data is committed in full. It can be appreciated that one an event to a transaction is acknowledged, and the transaction is merged, its commitment is guaranteed.

An information handling system is provided. The information handling system includes at least one server, that includes a plurality of ports, wherein information is transmitted to and from the at least one server on the plurality of ports, and a memory storing a table, the table storing a status indication and port on which the status indication was received. The information handling system also includes a plurality of switches coupled to the at least one server to form a link aggregation group (LAG), the plurality of switches transmitting information including the status indication to the at least one server. If the server receives more than one status indication having a master status, the at least one server is configured to stop forwarding information on at least one port on which information including a master status indication has been received after previously receiving information that did not include a master status indication.

The invention discloses a master / standby signal switching method which comprises the following steps: detecting an indication signal sent by a first module and an indication signal sent by a second module; and when the indication signal sent by the first module and the indication signal sent by the second module both indicates standby status, changing the indication status of the indication signalsent by the second module to master status. The embodiment of the invention also provides a corresponding device. The embodiment of the invention uses level signals sent by the master / standby real-time detection modules, changes the level signal of one of the modules into a low-level signal in master status when the signals both indicate the standby status, and guarantees that at least one moduleis in the master status, thus leading the service not to be interrupted.

The invention discloses a method and system for performing dual-homing automatic switching judgment according to the number of registered gateways. The method comprises the following steps: triggering a switching judgment mechanism of a standby server when a master server detects that heartbeat coupling between the master server and the standby server is interrupted; enabling the standby server to detect the number of media gateways switched to a local machine according to trigger signals of the switching judgment mechanism, and if the number of the detected media gateways reaches a threshold, transferring the status of the local machine to be master and taking over responsibilities of the master server. The invention further provides a system for performing dual-homing automatic switching judgment according to the number of the registered gateways. According to the method and the system, the problem of abnormal switching or the dual-master status caused by transient faults of the standby server and simultaneous abnormity of heartbeat coupling and Mc port coupling and the like can be solved, and safety robustness of the switching judgment method is improved.

A method for fault tolerant controller readiness. Executing functions by a first controller operating in a primary status mode. Operating in a hot standby status mode by a second controller and mirroring the first controller by executing functions to operate as a redundant controller. Operating in a cold standby status mode by at least one backup controller under normal operating conditions. The second controller is reconfigured while operating under normal operating conditions from the hot standby status mode to the primary standby status mode if a failure occurs in the first controller. Reconfiguring the at least one backup controller operating under normal operating conditions from cold standby status mode to hot standby status mode to operate as a redundant controller in response to the reconfiguring the second controller from the hot standby status mode to the primary status mode.

The invention discloses an Ethernet communication master station implementation method, comprising an Ethernet, a master station and a slave station, wherein the master station is connected with the Ethernet by a connector, and forms a bus structure with the slave station which is connected with the master station by the Ethernet; the method specifically comprises the following steps: a initializing the master station and scanning the bus, b configuring the bus and synchronously monitoring the real-time state of the bus, and c entering to the normal running stage by the bus so as to finish data communication work between the master station and the slave station. The method has beneficial effects that the master station can dynamically adjust the instruction sending time according to system task scheduling jitter and application program execution time jitter, so as to ensure the consistency of the rhythms of the master station and the slave station in reading and writing data, the real-time requirement of the method to the master station is not very high, and the allowed system task scheduling jitter is larger and larger along with the shortening of the execution time of the upper application program.

A multi-core processor system, a dynamic power management method thereof and a control apparatus thereof are provided. In the method, a workload of a multi-core processor during a runtime stage is obtained. Next, a hot-plug operation is respectively performed on a plurality of slave cores according to the workload and a working state of each slave core. Then, a bus master status and the working state of a boot core are monitored to determine whether to power off the boot core, in which the bus master status is generated by combining a plurality of device statuses reflected by a plurality of peripheral devices. Finally, when the bus master status is determined as idle, the boot core is powered off.

The invention discloses a stereo garage license plate information collector which comprises a 485 communication module, a primary protection circuit, an output execution unit, an output relay group, a main control and micro control unit, a secondary protection circuit, an input collection unit, a DC power supply module, a voltage regulation circuit, a primary status indicator unit, a secondary status indicator unit, and an input channel group. The stereo garage license plate information collector of the invention has the advantages of convenient collection, stable signal, long communication distance and low cost.

The invention discloses a network user status monitoring method. The method comprises the steps of defining two-dimensional marking array statuses [][] in a memory of a server and initializing a unit value as 0; allocating a unique user serial number uid to each user, defining n attribute statuses of an access attribute sid and setting whether the user is online or not as a user master status; when the user logs in, setting the unit value corresponding to the master status as 1, and setting the unit values of the marking arrays corresponding to the other n-1 attribute statuses according to actual condition of the user; and when the user logs out, restoring all unit values of the marking arrays to 0. The invention also discloses a network user status searching method. The method comprises the steps of searching the uid of the u ser in a database table; calling the corresponding marking array status [uid][sid]; and judging all attribute statuses of the user according to the unit values of the n marking arrays. According to the methods, the speed of searching the statuses by the user can be improved, and the occupied space of the memory of the server is reduced.

A communication system is described where multiple communication networks are simultaneously accessible from a plurality of fixed and / or mobile communication devices. A Master and Slave hierarchy is implemented among the communication devices to improve communication properties on one or multiple networks. A network system controller is implemented to select the network with optimal communication characteristics for subsets of communication devices as well as assigning Master status to a communication device within these subsets.

A computer-implemented method for distributing a plurality of data partitions among a cluster of computer nodes includes dividing a database into a plurality of primary partitions, storing the primary partitions on a plurality of nodes associated with a computer network, duplicating the primary partitions to create a plurality of secondary partitions and storing the secondary partitions on the nodes, wherein the primary and secondary partitions are substantially evenly distributed among the nodes, each secondary partition is stored on a different node than its corresponding primary partition, diversity exists with respect to each secondary partition and the node where it is stored, the primary partitions are available to serve a system workload, and one or more secondary partitions corresponding to one or more primary partitions of a failed node are available to be upgraded to primary status to maintain workload balancing and data availability after one of the computer nodes fails.

A system memory (110, 210) accessed by a bus master controller (145, 245) is set as non-cacheable. A bus master status bit is not set for any bus master controller transfer cycles with the non-cacheable memory while the system processor (102, 202) is in a low power state.