Abstract: A method is disclosed, for use with a multiprocessing hardware mesh architecture including nodes and a network of interconnections between the nodes, for defining and implementing a target logical mesh architecture utilizing a given subset of the nodes and the interconnections of the hardware architecture. Typically, the hardware mesh architecture includes redundant nodes and interconnections, sot hat the target logical mesh architecture may be defined from the hardware architecture several different ways. As a consequence, the target logical mesh architecture may be defined even in the presence of faulty nodes or interconnections in the hardware architecture. Frequently, the logical mesh is defined in terms of some regular pattern of interconnections.

Abstract: A method and apparatus are presented for tolerating up to k faults in a d-dimensional mesh architecture based on the approach of adding spare components (nodes) and extra links (edges) to a given target mesh where m spare nodes (m.gtoreq.k) are added and the maximum number of links per node (degree of the mesh) is kept small. The resulting architecture can be reconfigured, without the use of switches, as an operable target mesh in the presence of up to k faults, regardless of their distribution. According to one aspect of the invention, given a d-dimensional mesh architecture having N=n.sub.1 .times.n.sub.2 .times.. . . .times.n.sub.d nodes, the fault-tolerant mesh can be represented by a diagonal or circulant graph having N+m-k nodes, where m.gtoreq.k. This graph has the property that given any set of k or fewer faulty nodes, the remaining graph, after the performance of a pre-determined node renaming process, is guaranteed to contain as a subgraph the graph corresponding to the target mesh M so long as d.

Abstract: An electromagnetic diaphragm-type valve has a leakage preventing convex ring and is particularly applicable to air-aided fuel injection system. The valve includes an external housing made of a magnetic-inductive material, an electromagnetic coil set installed inside the rear part of external housing, a magnetic-inductive stator fitted to the central holding site of electromagnetic coil set, and a valve stem installed in the front part of external housing. The valve stem circumference is integrated with a deflectable rubber diaphragm so as not only to enable the valve stem to move a minor distance but also to enable the valve stem to be located in a right or left position. In addition, the diaphragm isolates an air chamber from parts defining the ranges of guidance and lift of valve stem, hence the motion of valve stem is not affected by entrance of pollutants. The diaphragm is formed to seal in compresed air in the air chamber.

Abstract: A solenoid-operated injector for an electronically controlled fuel oil injection system which serves to control fuel oil injection by means of a shift of a ball valve unit. The ball valve unit includes a flat armature and a ball valve, the flat armature is shifted, floatingly, without any guidance. As the ball valve unit is sucked and moved to an open state, the flat armature abuts against a thin plate having a high magnetic resistance. The top of the flat armature is acted upon by a compressed spring with the top end of the compressed spring abutting against a spring regulating tube, so that the spring force acting on the flat armature can be changed by adjusting the spring regulating tube. Both the compressed spring and ball valve are located in the magnetic stator of the solenoid coil with the flat armature and the ball valve being located such that the spring force normally biases the ball valve against the oblique cone concave on the top of the valve seat.

Abstract: A single lens non-reflex camera or twin lens camera with multiple exposure structure which is composed of a body 1 of a camera, a shutter release member 2, a brake plate or locking member 3 and a shutter release 103. After first exposure has been made by pressing the shutter button release button 103 the shutter release member 2 can be re-cocked by operating a manually operable multiple exposure button 30 so that further exposure can be made by pressing the shutter release button 103 without operating the winder 9.