摘要:
In a lock-step synchronism fault-tolerant computer system including a plurality of computing modules having a processor and a memory in which each computing module processes the same instruction string in synchronization with each other. When detecting disagreement in a state of access to an external bus among the respective processors in each computing module, if no fault is detected in the system including each computing module, processing of resuming operation in synchronization is executed with respect to each computing module after generating an interruption to all the processors to execute delay adjustment for making a state of instruction execution among computing modules be coincident.
摘要:
An information processing apparatus of the present invention includes first and second computer elements which execute the same instructions substantially simultaneously and which are substantially synchronized with each other. The first computer element includes first and second memory elements, which are written by the first and second computer elements, respectively, during a first state. The information processing apparatus has a control element which makes the first computer element read from the second memory element during a second state. Another information processing apparatus has the first and second computer elements, and first and second memory areas which are provided in the first computer element. The first and second memory areas are written by the first computer element and the second computer element, respectively, during a first state. A control element makes the first computer element read from the second memory area during a second state.
摘要:
A lock-step synchronism fault-tolerant computer system includes a plurality of computing modules having a processor and a memory in which each computing module processes the same instruction string in synchronization with each other. When disagreement in a state of access to an external bus among the respective processors in each computing module is detected, if no fault is detected in the system including the respective computing modules, an interruption is notified to all of said processors. Synchronization among each computing module is recovered by adjusting timing of a response to an access which each processor executes by an interruption.
摘要:
This invention relates to a polyolefin composition with an improved weather resistance, which comprises a polyolefin blended with (1) a benzotriazole compound, (2) a heterocyclic hindered amine compound and (3) a phenyl benzoate compound or nickel complex compound.
摘要:
A liquidometer composed of a siphon for emitting a sample liquid stored in a reservoir and a liquid level sensor for sensing the level of the sample remained in the reservoir. The siphon further includes a pair of sensors for counting the number of emission thereof, while the liquid level sensor includes two rows of resistive film with a plurality of sensing elements embedded therein. Outside the liquidometer, there are provided a counter connected to the emission sensor, a level calculator connected to the liquid level sensor, and a calculator coupled to both. A gross amount of the sample liquid having been measured for a period of hours is obtained by adding together a count signal from the counter which represents the quantity of the sample liquid fully stored in the reservoir and a signal from the level counter which represents the liquid level of the remaining sample liquid. Moreover, variations in the quantity of the sample for a predetermined period is computed by the calculator in response to its internal clock.
摘要:
An information processing system capable of dynamic CPU replacement regardless of the function of OS, and a method and a program for controlling the same. The information processing system comprises an information processor and a service processor. The service processor instructs MMCs of all cell boards in a partition that includes a cell board to be removed and an MMC of a replacement cell board to be incorporated to copy data from a memory of the cell board to be removed to a memory of the replacement cell board. Besides, when receiving a write instruction during the copying operation, the MMCs write the same data written to the cell board subject to replacement also to the memory of the replacement cell board. After the copying operation has been finished, the operations of CPUs in the partition are forcefully suspended. Subsequently, the service processor instructs BIOS to copy inside information of the CPU in the cell board subject to replacement into the CPU in the replacement cell board. When the copying operation has been finished, the service processor swaps information on the cell board subject to replacement for information on the replacement cell board, which concern OS control such as logical IDs stored outside the CPUs. Thus, the OS recognizes the replacement cell board as the replaced cell board.
摘要:
There is provided a fiber channel fabric for interchanging frame by dividing a connectionless, variable length frame into fixed length cells without carrying out calling setup and/or releasing command between termination nodes, to thereby interchange cells, and further by reconstructing the thus interchanged cells into an original frame, the fiber channel fabric including (a) a fiber channel interface controller for communicating with a termination node or another fiber channel fabric to control a fiber channel in protocol, (b) an input data buffer for temporarily storing a frame received the termination node or the another fiber channel fabric, (c) a cell producer for dividing the frame received into fixed length cells, (d) a cell switch for interchanging data at the unit of a fixed length cell, (e) a frame constructor for reconstructing an original frame of the fixed length cells transmitted from the cell switch, (f) an output data buffer for temporarily storing a frame transmitted from the frame constructor, and (g) a congestion controller for monitoring a load of the cell switch to thereby avoid congestion. The above-mentioned fiber channel fabric can be readily constructed as a hardware for enhancing interchangability, and provides a congestion controller having a simpler structure.
摘要:
A signal processor which is capable of amplifying, at a predetermined amplification factor, only AC components of input signals Vin received from a pyroelectric infrared sensor or sensors. The signal processor essentially includes a low-pass filter circuit (11) for passing on only a DC component of an input signal (Vin) received from a pyroelectric infrared sensor (1), and a differential amplifier circuit (21) arranged to amplify only an AC component of the input signal (Vin) on the basis of a DC signal (VDC) passed through the low-pass filter circuit (11) and the input signal (Vin) received from the pyroelectric infrared sensor(1). Along with the input signal (Vin) from the pyroelectric infrared sensor, the differential amplifier circuit (21) is supplied with the DC signal (VDC) which is a DC component of the input signal (Vin) which has been passed through the low-pass filter circuit. The differential amplifier circuit (21) operates to amplify a differential signal (Vin-VDC), producing at its output terminal an output voltage Vout having only an AC component (VAC) of the input signal amplified at an amplification factor .alpha. as determined by settings of resistance values.
摘要:
A precision cutting process machine aligns a workpiece to be subjected to a precision cutting process by a continuously rotating cutting tool relative to the cutting tool, and cuts the work into a predetermined pattern so as to form fine grooves at a predetermined pitch by a continuous cutting processes. The machine includes a main body base portion and an up-and-down moving table driven in the up-and-down direction with respect to the main body base portion. The cutting tool, which is arranged on the up-and-down moving table, sets a plane formed upon rotation of the cutting tool on a plane along the back-and-forth direction of the main body base portion and is continuously rotated; back-and-forth moving table is driven in the back-and-forth direction with respect to the main body base portion, a right-and-left moving table is fixed on the back-and-forth moving table and driven in the right-and-left direction with respect to main body base portion, a holding device is arranged on the right-and-left moving table for detachably holding the work, and a measurement device is arranged on the up-and-down moving table for measuring dimensions of the workpiece in the up-and-down and right-and-left directions. In order to perform the cutting process of the workpiece held by the holding device, the moving amount in the up-and-down direction of the cutting tool, which is arranged on the up-and-down table and continuously rotated, is measured by the measurement device while the moving amount, in the right-and-left direction, of the workpiece held by the holding device on the right-and-left moving table is measured by the measurement device.
摘要:
A liquid level sensor for detecting a level of an electrolyte where: a pair of resistance films are formed on an insulating substrate: a plurality of electrodes are intermittently mounted on the resistance films in the longitudinal direction; the resistance films are soaked in the electrolyte in the vertical direction along the longitudinal direction; the liquid surface is detected from the variation of the resistance value of the resistance films caused by the short-circuiting of pairs of the electrodes in the electrolyte. The exposed surface of the resistance film is covered by a moisture-resistance film. The result is that undesirable change of resistance value of the resistance film caused by being moistened can be reliably prevented.